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Top Results (6)

Part Manufacturer Description Datasheet Download Buy Part
UC3845NG4 Texas Instruments Current-Mode PWM Controller 8-PDIP 0 to 70
UC3845ADWTR Texas Instruments 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO16
UC3845AQTR Texas Instruments 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PQCC20, PLASTIC, LCC-20
UC3845DTR Texas Instruments Current-Mode PWM Controller 14-SOIC 0 to 70
UC3845ADG4 Texas Instruments Current Mode PWM Controller 14-SOIC 0 to 70
UC3845DR-8 Texas Instruments 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO8

UC3845 pspice model Datasheets Context Search

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2001 - UC3842 smps design

Abstract: UC3843 application note uc3844 smps power supply UC3844 application note uc3845 smps UC3845 application note uc3845 PWM power supply application note UC3842 mosfet driver uc3845 application smps 5v power supply with uc3842
Text: www.fairchildsemi.com UC3842/UC3843/UC3844/ UC3845 SMPS Controller Features Description · · · · The UC3842/UC3843/UC3844/ UC3845 are fixed frequency current-mode PWM controller. They , ) The UC3843 and UC3845 are 8.5V (on) and 7.9V (off) The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844and UC3845 can operate with 50% duty cycle. Low Start Up Current Maximum Duty , Block Diagram Rev. 1.0.0 ©2001 Fairchild Semiconductor Corporation UC3842/UC3843/UC3844/ UC3845


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PDF UC3842/UC3843/UC3844/UC3845 UC3842/UC3843/UC3844/UC3845 TheUC3842 UC3844 UC3843 UC3845 UC3842 smps design UC3843 application note uc3844 smps power supply UC3844 application note uc3845 smps UC3845 application note uc3845 PWM power supply application note UC3842 mosfet driver uc3845 application smps 5v power supply with uc3842
UC28450

Abstract: off-line flyback regulator uc3845 DC/DC converter UC3845
Text: , UC3845 series are high perform ance fixed frequency current mode controllers. They are specifically , , UC3845 , UC2844, UC3845 M AXIM UM RATINGS Symbol Value Unit ( ic e + !z) 30 mA Output , , UC3845 UC2844, UC2845 ta Rating Total Power Supply and Zener Current 3 Power Dissipation , °C for UC3844, UC3845 T high = +70°C for UC3844, UC3845 -2 5°C for UC2844, UC2845 +85°C for UC2844, UC2845 MOTOROLA LINEAR/INTERFACE ICs DEVICE DATA 3-516 V mA UC3844, UC3845 , UC2844, UC3845


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PDF UC3844, UC2844, UC3845 UC28450 off-line flyback regulator uc3845 DC/DC converter UC3845
flyback

Abstract: Average simulations of FLYBACK converters with SPICE3 UC3845 pspice model SEM-800 dixon flyback smps uc3845 SUBCKT XFMR 1 2 3 4. RP 1 2 1MEG UC3845 spice model voltage controlled pwm generator 0 to 100 pspice model Spice model xfmr uc3845 isolated smps
Text: introduced by Lloyd Dixon in [7]. The model was originally written in PSpice syntax (Microsim, Irvine, CA , model in [7] uses PSpice syntax to clamp the output voltage of some internal sources. This syntax is not , 0.5882 .ENDS PWMGAIN * PSpice Sam BEN-YAAKOV's model in Discontinuous mode * .TRAN 1U 1000US .AC , boost, buck, or buck-boost converter may be described by a canonical model whose element values can be , converter model Output transformer Out+ In+ Output voltage COUT RLOAD InInput voltage OutDuty Cycle ESR


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2003 - off-line flyback regulator uc3845

Abstract: uc38458 Datasheet of ic uc3845 uc3844 transformer design UC3844 flyback application note UC2845 SO14 UC2844 flyback application forward converter uc3844 UC3845 T Flip-Flop
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 , : UC3844/D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Symbol Value Unit (ICC + , Ambient Temperature UC3844, UC3845 UC2844, UC2845 TA Storage Temperature Range Tstg Total , ambient as possible. Thigh = +70°C for UC3844, UC3845 Tlow = 0°C for UC3844, UC3845 -25 °C for UC2844, UC2845 +85°C for UC2844, UC2845 http://onsemi.com 2 UC3844, UC3845 , UC2844, UC2845 ELECTRICAL


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 r14525 UC3844/D off-line flyback regulator uc3845 uc38458 Datasheet of ic uc3845 uc3844 transformer design UC3844 flyback application note UC2845 SO14 UC2844 flyback application forward converter uc3844 T Flip-Flop
2004 - UC3844 flyback application note

Abstract: uc3845 flyback UC3845 flyback application note UC3844BN equivalent UC3845BN equivalent forward converter uc3844 UC2845 application notes PIN CONFIGURATION OF IC uc3845 UC2844 flyback application flyback uc3845 application
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series , : UC3844/D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Total Power Supply and Zener Current , Junction-to-Air Operating Junction Temperature Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 Storage , test to maintain junction temperature as close to ambient as possible. Thigh = +70°C for UC3844, UC3845 Tlow = 0°C for UC3844, UC3845 -25°C for UC2844, UC2845 +85°C for UC2844, UC2845 http://onsemi.com 2


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 UC3844/D UC3844 flyback application note uc3845 flyback UC3845 flyback application note UC3844BN equivalent UC3845BN equivalent forward converter uc3844 UC2845 application notes PIN CONFIGURATION OF IC uc3845 UC2844 flyback application flyback uc3845 application
2004 - UC3844 flyback application note

Abstract: off-line flyback regulator uc3845 forward converter uc3844 UC3845 dc dc applications UC3845 application note UC3845 constant power UC2844 flyback application pin connections UC3844 UC3844 application note uc3845 PWM power supply application note
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 , : UC3844/D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Symbol Value Unit (ICC + , Ambient Temperature UC3844, UC3845 UC2844, UC2845 TA Storage Temperature Range Tstg Total , dissipation limits must be observed. http://onsemi.com 2 UC3844, UC3845 , UC2844, UC2845 ELECTRICAL , , UC3845 Tlow = 0°C for UC3844, UC3845 -25°C for UC2844, UC2845 +85°C for UC2844, UC2845 http


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 UC3844/D UC3844 flyback application note off-line flyback regulator uc3845 forward converter uc3844 UC3845 dc dc applications UC3845 application note UC3845 constant power UC2844 flyback application pin connections UC3844 UC3844 application note uc3845 PWM power supply application note
2002 - uc3845 application smps

Abstract: SMPS CIRCUIT DIAGRAM UC3842 uc3844 smps power supply uc3843 dc dc converter UC3842 smps design uc3842 uc3844 reference smps uc3843 UC3842 smps diagram UC3844 application note
Text: www.fairchildsemi.com UC3842/UC3843/UC3844/ UC3845 SMPS Controller Features · · · · Low Start , The UC3842/UC3843/UC3844/ UC3845 are fixed frequencycurrent-mode PWM controller. They are specially , and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle. 8-DIP 8-SOP 1 1 14-SOP 1 Internal , UC3844, UC3845 Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation UC3842/UC3843/UC3844/ UC3845


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PDF UC3842/UC3843/UC3844/UC3845 500KHz UC3842/UC3843/UC3844/UC3845 UC3842 UC3844 UC3843 UC3845 uc3845 application smps SMPS CIRCUIT DIAGRAM UC3842 uc3844 smps power supply uc3843 dc dc converter UC3842 smps design uc3844 reference smps UC3842 smps diagram UC3844 application note
2002 - Not Available

Abstract: No abstract text available
Text: Features Description • • • • The UC3842/UC3843/UC3844/ UC3845 are fixed , thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle , 14SOP PINNO. * TOGGLE FLIP FLOP USED ONLY IN UC3844, UC3845 Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation UC3842/UC3843/UC3844/ UC3845 Absolute Maximum Ratings Parameter Symbol


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PDF UC3842/UC3843/UC3844/UC3845 UC3842 UC3844 UC3843 UC3845
2002 - 12v dc power supply with uc3845

Abstract: uc3843 dc dc converter UC3845 dc dc applications uc3842 uc3845 smps UC3842 smps design UC3844 application note uc3843 dc 5v UC3843 UC3843 application note
Text: www.fairchildsemi.com UC3842/UC3843/UC3844/ UC3845 SMPS Controller Features Description · · · · The UC3842/UC3843/UC3844/ UC3845 are fixed frequencycurrent-mode PWM controller. They are , ). The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle. Low Start up Current Maximum , FLOP USED ONLY IN UC3844, UC3845 Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation UC3842


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PDF UC3842/UC3843/UC3844/UC3845 UC3842/UC3843/UC3844/UC3845 UC3842 UC3844 UC3843 UC3845 12v dc power supply with uc3845 uc3843 dc dc converter UC3845 dc dc applications uc3845 smps UC3842 smps design UC3844 application note uc3843 dc 5v UC3843 application note
2000 - uc3842 circuit diagram

Abstract: UC3842 mosfet driver UC3842 uc3844 smps power supply uc3844 reference smps uc3845 smps SMPS CIRCUIT DIAGRAM UC3842 power supply with uc3842 with circuit diagram uc3845 applications UC3843
Text: www.fairchildsemi.com UC3842/UC3843/UC3844/ UC3845 SMPS Controller Features Description · · · · The UC3842/UC3843/UC3844/ UC3845 are fixed frequency current-mode PWM controller. They , ) The UC3843 and UC3845 are 8.5V (on) and 7.9V (off) The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844and UC3845 can operate with 50% duty cycle. Low Start Up Current Maximum , / UC3845 Absolute Maximum Ratings Parameter Symbol Value Unit Supply Voltage VCC 30


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PDF UC3842/UC3843/UC3844/UC3845 UC3842/UC3843/UC3844/UC3845 TheUC3842 UC3844 UC3843 UC3845 uc3842 circuit diagram UC3842 mosfet driver UC3842 uc3844 smps power supply uc3844 reference smps uc3845 smps SMPS CIRCUIT DIAGRAM UC3842 power supply with uc3842 with circuit diagram uc3845 applications
2002 - uc3842

Abstract: 12v dc power supply with uc3845 uc3843 uc3845 application smps uc3843 dc dc converter UC3844 uc3845 reference smps uc3845 uc3844 smps power supply uc3842 smps
Text: www.fairchildsemi.com UC3842/UC3843/UC3844/ UC3845 SMPS Controller Features · · · · Low Start , The UC3842/UC3843/UC3844/ UC3845 are fixed frequencycurrent-mode PWM controller. They are specially , and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle. 8-DIP 8-SOP 1 1 14-SOP 1 Internal , UC3844, UC3845 Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation UC3842/UC3843/UC3844/ UC3845


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PDF UC3842/UC3843/UC3844/UC3845 500KHz UC3842/UC3843/UC3844/UC3845 UC3842 UC3844 UC3843 UC3845 12v dc power supply with uc3845 uc3845 application smps uc3843 dc dc converter uc3845 reference smps uc3844 smps power supply uc3842 smps
1999 - uc3845 SCHEMATIC smps

Abstract: flyback MC34063 mc34063 flyback uc3845 power supply schematic flyback smps uc3845 uc3845 schematic MC34063 MOSFET UC3845 spice model MC34063 current source application notes mc34063
Text: bipolars and UC3845 boast low startup current Popular UC384X­based Offline Switch Mode Power Supplies , 5.1 V MMG05N60D M1 8 R6 Q1 100 k 2N3906 UC3845 C5 1 nF 10 m F 7 4 + , starts here UC3845 Vcc Magnified Vcc X = 5 ms/div Figure 4. Low­line startup sequence of the , the supply. A SPICE model of the 6 MC33341 is available for download at: http , standard structure using a metallic model can be obtained by e­mail upon request to the author


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PDF AN1689/D AN1689 R38010 uc3845 SCHEMATIC smps flyback MC34063 mc34063 flyback uc3845 power supply schematic flyback smps uc3845 uc3845 schematic MC34063 MOSFET UC3845 spice model MC34063 current source application notes mc34063
2004 - UC3844 flyback application note

Abstract: UC3844 flyback transformer forward converter uc3844 UC3844 flyback converter UC2845 application notes UC3844 flyback uc3845 PWM power supply application note boost uc3844 application note UC3845 dc dc applications UC3845 flyback application note
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series , /D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Total Power Supply and Zener Current , Junction-to-Air Operating Junction Temperature Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 Storage , must be observed. http://onsemi.com 2 UC3844, UC3845 , UC2844, UC2845 ELECTRICAL , maintain junction temperature as close to ambient as possible. Thigh = +70°C for UC3844, UC3845 Tlow = 0


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 UC3844/D UC3844 flyback application note UC3844 flyback transformer forward converter uc3844 UC3844 flyback converter UC2845 application notes UC3844 flyback uc3845 PWM power supply application note boost uc3844 application note UC3845 dc dc applications UC3845 flyback application note
2005 - uc38458

Abstract: UC3844 flyback application note forward converter uc3844 pin connections UC3844 UC2844 flyback application UC3845 dc dc applications AN UC3845 Datasheet of ic uc3845 UC2844 flyback application source UC3845 application note
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 , Publication Order Number: UC3844/D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Symbol , Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 TA Storage Temperature Range Tstg , junction temperature as close to ambient as possible. Tlow = 0°C for UC3844, UC3845 Thigh = +70°C for UC3844, UC3845 -25°C for UC2844, UC2845 +85°C for UC2844, UC2845 http://onsemi.com 2 UC3844


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 UC3844/D uc38458 UC3844 flyback application note forward converter uc3844 pin connections UC3844 UC2844 flyback application UC3845 dc dc applications AN UC3845 Datasheet of ic uc3845 UC2844 flyback application source UC3845 application note
UC3845 flyback application note

Abstract: off-line flyback regulator uc3845 UC 3845 PWM IC uc38450 flyback uc3845 application uc3845 flyback UC3845 constant power of ic uc3845 UC3845 transformer design 3844n
Text: CONTROLLER A dvance Information High Performance Current Mode Controller The UC3844, UC3845 series are , , UC3845 , UC2844, UC3845 MAXIMUM RATINGS R ating Total P o w er S u pply and Z e n e r C u rrent O utpu t , DATA 3-516 UC3844, UC3845 , UC2844, UC3845 ELECTRICAL CHARACTERICISTICS ( V q q = 15 V, [N ote 2 , , UC3845 , UC2844, UC3845 Figure 1. Timing Resistor versus Oscillator Frequency Figure 2. Output Dead Time , 200 mV/DIV UC3844, UC3845 , UC2844, UC3845 Figure 7. Reference Voltage Change versus Source


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PDF UC3844, UC2844, UC3845 UC3845 UC3845 flyback application note off-line flyback regulator uc3845 UC 3845 PWM IC uc38450 flyback uc3845 application uc3845 flyback UC3845 constant power of ic uc3845 UC3845 transformer design 3844n
2006 - uc38458

Abstract: uc3845 flyback UC3845 UC3844 application note UC3844 flyback application note UC2844 flyback application flyback uc3845 application off-line flyback regulator uc3845 uc3844 transformer design EC35-3c8
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 , Publication Order Number: UC3844/D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Symbol , Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 TA Storage Temperature Range Tstg , maintain junction temperature as close to ambient as possible. Thigh = +70°C for UC3844, UC3845 Tlow = 0°C for UC3844, UC3845 -25°C for UC2844, UC2845 +85°C for UC2844, UC2845 http://onsemi.com 2


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 UC3844/D uc38458 uc3845 flyback UC3844 application note UC3844 flyback application note UC2844 flyback application flyback uc3845 application off-line flyback regulator uc3845 uc3844 transformer design EC35-3c8
2004 - UC3845

Abstract: flyback uc3845 application UC3845 application notes PIN CONFIGURATION OF IC uc3845 forward converter uc3844 UC3844 flyback application note power supply with uc2844 uc3845 flyback UC2844
Text: UC3844, UC3845 , UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series , : UC3844/D UC3844, UC3845 , UC2844, UC2845 MAXIMUM RATINGS Rating Total Power Supply and Zener Current , Junction-to-Air Operating Junction Temperature Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 Storage , observed. http://onsemi.com 914 UC3844, UC3845 , UC2844, UC2845 ELECTRICAL CHARACTERISTICS (VCC = , as close to ambient as possible. Tlow = 0°C for UC3844, UC3845 Thigh = +70°C for UC3844, UC3845 -25°C


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PDF UC3844, UC3845, UC2844, UC2845 UC3845 BRD8011/D. SOIC-14 UC384xN UC284xN flyback uc3845 application UC3845 application notes PIN CONFIGURATION OF IC uc3845 forward converter uc3844 UC3844 flyback application note power supply with uc2844 uc3845 flyback UC2844
2004 - PIN CONFIGURATION OF IC uc3845

Abstract: forward converter uc3844 UC3844 UC3845 DIP8 switch mode power supply using uc3844 of ic uc3845 uc3844 45 uc3845 applications UC3845 QW-R103-001
Text: The UTC UC3844 and UTC UC3845 are high performance fixed frequency current mode controllers. They are , ), ideally suited for off-line converters. The UTC UC3845 is tailored for lower voltage applications having , 11.5 8.2 % DCmax DCmin Icc Vz Vcc=6.5V for UC3845 Vcc=14V for UC3844 Icc=25mA 47 30 48 0.5 12 36 50 0 , Output Voltage Rise Time Output Voltage Fall Time Startup Threshold UC3844 UC3845 Minimum Operating Voltage After Turn-On UC3844 UC3845 V ns ns V UNDERVOLTAGE LOCKOUT SECTION PWM SECTION Duty


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PDF UC3844/45 UC3844 UC3845 QW-R103-001 PIN CONFIGURATION OF IC uc3845 forward converter uc3844 UC3845 DIP8 switch mode power supply using uc3844 of ic uc3845 uc3844 45 uc3845 applications
UC3843 diagram

Abstract: UC2843 applications unitrode Applications Note uc3843 "PWM Controllers" UC 3842 UC3843 UC2845 application notes uc3843 power factor uc3843 application note uc384 uc 3842 am
Text: UC2842, UC2843, UC2844, UC2845 UC3842, UC3843, UC3844, UC3845 CURRENT-MODE P W M CONTROLLERS D3175 , Incorporated 2 -47 5 UC2842, UC2843, UC2844, UC2845 UC3842, UC3843, UC3844, UC3845 CURRENT-MODE PWM , 3 · DALLAS, TEXAS 7 5 2 8 5 UC2842, UC2843, UC2844, UC2845 UC3842, UC3843, UC3844, UC3845 , , TEXAS 752 6 5 o 1 in IT ) UC2842, UC2843, UC2844, UC2845 UC3842, UC3843, UC3844, UC3845 , , UC2844, UC2845 UC3842, UC3843, UC3844, UC3845 CURRENT-MODE PWM CONTROLLERS electrical characteristics, V


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PDF UC2842, UC2843, UC2844, UC2845 UC3842, UC3843, UC3844, UC3845 D3175, 1989-REVISED UC3843 diagram UC2843 applications unitrode Applications Note uc3843 "PWM Controllers" UC 3842 UC3843 UC2845 application notes uc3843 power factor uc3843 application note uc384 uc 3842 am
2012 - utc 3845

Abstract: UC3844 12v dc power supply with uc3845 UC3845L UC3845 dc dc applications switch mode power supply using uc3844 UC3845G
Text: minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle ranges , thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower , tF UNDERVOLTAGE LOCKOUT SECTION UC3844 14.5 16.0 17.5 Startup Threshold VTHR V UC3845 7.8 8.4 9.0 UC3844 8.5 10.0 11.5 Minimum Operating VCC(MIN) V Voltage After Turn-On UC3845 7.0 7.6 8.2 PWM SECTION 47 , V UC3845 0.5 1.0 VCC=6.5V Power Supply Current ICC mA (Note 4) UC3844 VCC=14V 12 17 Startup Current


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PDF UC3844/45 UC3844/3845 UC3844 UC3845 UCX844 QW-R103-010 utc 3845 12v dc power supply with uc3845 UC3845L UC3845 dc dc applications switch mode power supply using uc3844 UC3845G
2005 - UC3845L

Abstract: forward converter uc3844 uc3844 UC3845 dc dc applications uc3844 applications UC3845S UC3844 application note 12v dc power supply with uc3845 UC3844L uc3844 45
Text: minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle , UVLO thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for , Threshold VTHR V UC3845 7.8 8.4 9.0 Minimum Operating UC3844 8.5 10.0 11.5 V VCC(MIN) Voltage After Turn-On 7.0 7.6 8.2 UC3845 PWM SECTION Max DCMAX 47 48 50 % Duty Cycle Min DCMIN 0 % TOTAL DEVICE Power Supply Zener Voltage VZ ICC=25mA 30 36 V UC3845 VCC=6.5V 0.5 1.0


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PDF UC3844/45 UC3844/3845 UC3844 UC3845 UC3844L/UC3845L QW-R103-010 UC3845L forward converter uc3844 UC3845 dc dc applications uc3844 applications UC3845S UC3844 application note 12v dc power supply with uc3845 UC3844L uc3844 45
2015 - Not Available

Abstract: No abstract text available
Text: minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle , UVLO thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for , CIRCUIT MARKING  UC3844 UC3845 DIP-8 SOP-8 PIN CONFIGURATION  PIN , UNDERVOLTAGE LOCKOUT SECTION UC3844 14.5 16.0 17.5 Startup Threshold VTHR V UC3845 7.8 8.4 9.0 UC3844 8.5 10.0 11.5 Minimum Operating VCC(MIN) V Voltage After Turn-On UC3845 7.0 7.6 8.2


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PDF UC3844/45 UC3844/3845 UC3844 UC3845 QW-R103-010
UC3842

Abstract: U3844 UC3845 dc dc applications uc3843 UC3845 dc dc uc3843 uc-3843 uc3844 uc3845 applications TOGGLE FLIP FLOP
Text: UC3845 are 8.5 V and 7.9 V. The UC3842 and UC3843 can operate to duty cycles approaching 100%. A range of the zero to < 50 % is obtained by the UC3844 and UC3845 by the addition of an internal toggle flip , in U3844 and UC3845 ) I October 1991 1/8 819


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PDF UC2842/3/4/5 UC3842/3/4/5 UC3842/3/4/5 UC3842 UC3844 UC3843 UC3845 U3844 UC3845 dc dc applications dc dc uc3843 uc-3843 uc3845 applications TOGGLE FLIP FLOP
1994 - flyback uc3843

Abstract: u3844 forward converter UC3843 off-line flyback regulator uc3845 power supply with uc2842 flyback uc3842 uc3842 circuit diagram UC3845 dc dc applications uc3843 flyback supply forward converter uc3844
Text: applications The corresponding thresholds for the UC3843 and UC3845 are 8.5 V and 7.9 V. The UC3842 and , UC3844 and UC3845 by the addition of an internal toggle flip flop which blanks the output off every other clock cycle. BLOCK DIAGRAM (toggle flip flop used only in U3844 and UC3845 ) May 1995 1/11 , UC3842 UC3843 UC3844 UC3845 UC3842N UC3843N UC3844N UC3845N UC3842D UC3843D UC3844D , . Output frequency is one half oscillator frequency for the UC3844 and UC3845 . 4/11 34 V


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PDF UC2842/3/4/5 UC3842/3/4/5 UC3842/3/4/5 flyback uc3843 u3844 forward converter UC3843 off-line flyback regulator uc3845 power supply with uc2842 flyback uc3842 uc3842 circuit diagram UC3845 dc dc applications uc3843 flyback supply forward converter uc3844
2003 - forward converter uc3844

Abstract: PIN CONFIGURATION OF IC uc3845 UC3844 Datasheet of ic uc3845 UC3845 uc3844 PWM power supply application note UC3845 dc dc applications of ic uc3845 UC3844 application note QW-R103-001
Text: UTC UC3844/45 LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE CONTROLLERS DESCRIPTION The UTC UC3844 and UTC UC3845 are high performance fixed frequency current mode controllers. They , (on) and 10V(off), ideally suited for off-line converters. The UTC UC3845 is tailored for lower , UC3844 UC3845 Minimum Operating Voltage After Turn-On UC3844 UC3845 Vth V Vcc(min) V , (Note 2) Icc Power Supply Zener Voltage Vz Vcc=6.5V for UC3845 Vcc=14V for UC3844 Icc


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PDF UC3844/45 UC3844 UC3845 UC3844 QW-R103-010 forward converter uc3844 PIN CONFIGURATION OF IC uc3845 Datasheet of ic uc3845 uc3844 PWM power supply application note UC3845 dc dc applications of ic uc3845 UC3844 application note QW-R103-001
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