500 MILLION PARTS FROM 12000 MANUFACTURERS

DATASHEET SEARCH ENGINE

Top Results

Part Manufacturer Description Datasheet BUY
UC3844DTR Texas Instruments Current-Mode PWM Controller 14-SOIC 0 to 70 visit Texas Instruments
UC3844ADG4 Texas Instruments Current Mode PWM Controller 14-SOIC 0 to 70 visit Texas Instruments
UC3844DR-8 Texas Instruments 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO8 visit Texas Instruments
UC3844AQ Texas Instruments 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PQCC20, PLASTIC, LCC-20 visit Texas Instruments
UC3844N Texas Instruments Current-Mode PWM Controller 8-PDIP 0 to 70 visit Texas Instruments Buy
UC3844ADTRG4 Texas Instruments Current Mode PWM Controller 14-SOIC 0 to 70 visit Texas Instruments

uc3844 transformer design

Catalog Datasheet MFG & Type PDF Document Tags

UC3844 flyback application note

Abstract: UC3844 flyback error amplifier contained within the UC3844. The power transformer T1 has a primary side inductance of , Device Application Using UC3844 and LX1752 Evaluation Board Copyright © 2008 Rev. 1.0, 2008-12-18 , converters. The UC3844 is designed as the isolated flyback converter and the LX1752 generates the step down dual outputs. The flyback converter is configured using 13W. The power capability of the design can be increased to 30W by changing the flyback transformer and output rectifier diode to a higher power rating
-
Original
UC3844 flyback application note UC3844 flyback schematic diagram 48V power supply Poe uc3844 schematic diagram 24v dc dc UC3844 flyback converter UC3844 flyback transformer

UC3845 application note buck

Abstract: UC3843 application note buck / 2 X tpER& UC3844/5 where TPERIOD = 1 / F oscillator where: N = current sense transformer turns , CURRENT-MODE CONTROL The fundamental challenge of power supply design is to simultaneously realize two , highlights the features of each individual member, the UC3842, UC3843, UC3844 and UC3845 Throughout the text , equal current sharing. This opens the possibility of a modular approach to power supply design , following formula. Fosc (kHz) = 1.72 / (RT (k) × CT (pf) Figure 5 The UC3844 and UC3845 have an
Texas Instruments
Original
UC3845 application note buck UC3843 application note buck forward converter uc3844 500w UC3843 step up converter UC3843 buck converter application note uc3843 step up U-100A UC3842/3/4/5 UC3642 UC3706 UC3901 U-101

UC3844 flyback application note

Abstract: of the design can be increased to 30W by changing the flyback transformer and output rectifier diode , error amplifier contained within the UC3844. The power transformer T1 has a primary side inductance of , Device Application Using UC3844 and LX1752 Evaluation Board Copyright © 2008 Rev. 0.0, 2008-12-04 , non-isolated step down converters. The UC3844 is designed as the isolated flyback converter and the LX1752 , The connector J1 integrates an RF transformer for Ethernet data coupling and also an input filter that
-
Original

uc3844 schematic diagram 24v dc dc

Abstract: 24v dc power supply with uc3844 error amplifier contained within the UC3844. The power transformer T1 has a primary side inductance of , Device Application Using UC3844 and LX1752 Evaluation Board Copyright © 2008 Rev. 0.0, 2008-12-04 , converters. The UC3844 is designed as the isolated flyback converter and the LX1752 generates the step down dual outputs. The flyback converter is configured using 13W. The power capability of the design can be increased to 30W by changing the flyback transformer and output rectifier diode to a higher power rating
Microsemi
Original
24v dc power supply with uc3844 PowerDsine 3001 schematic uc3844 pcb design on uc3844 bzx84c5v1 on semi

UNITRODE applications handbook uc3842 -96

Abstract: UC3843 in isolated flyback converter / 2 X tpER& UC3844/5 where TPERIOD = 1 / F oscillator where: N = current sense transformer turns , CURRENT-MODE CONTROL The fundamental challenge of power supply design is to simultaneously realize two , highlights the features of each individual member, the UC3842, UC3843, UC3844 and UC3845 Throughout the text , equal current sharing. This opens the possibility of a modular approach to power supply design , following formula. Fosc (kHz) = 1.72 / (RT (k) × CT (pf) Figure 5 The UC3844 and UC3845 have an
Texas Instruments
Original
UNITRODE applications handbook uc3842 -96 UC3843 in isolated flyback converter unitrode Applications Note U-96 UNITRODE applications handbook uc3843 -96 power supply high efficiency on ic uc3843 UC3842 step up converter

UC3645

Abstract: isolated feedback uc2844 (M ) M O T O R O LA . UC3844, 45 UC2844, 45 HIGH PERFORMANCE CURRENT MODE CONTROLLERS High Performance Current Mode Controllers The UC3844, UC3845 series are high , 1 'I'lb 3-769 UC3844, 45 UC2844, 45 MAXIMUM RATINGS Rating Total Power Supply and , Junction-to-A ir Operating Junction Temperature Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 , bient as possible T|0W = 0°C fo r UC3844, UC3845 T hiqh = + 7 0 °C fo r UC3844, UC3845 - 2 5 rC fo r
-
OCR Scan
UC3645 isolated feedback uc2844 boost uc3844 application note forward converter uc3844 uc3844 transformer 8pin ic 3773 SO-14 UCX844 UCX845 Z7157 01D13 1N5819

supertex AN-H29

Abstract: T flip flop IC a PWM IC, Unitrode part #UC3844. An auxiliary winding on the transformer is used to generate a VCC , LR7 GND VOUT VCC PWM IC UC3844 C1 Figure 1: Simplified SMPS using LR7 3 LR745 , voltage to fall below 13.25V. For such conditions, the circuit in Figure 3 is recommended. Design , where, In Figure 3, the VREF pin of the UC3844 is used to bias the ground pin of the LR7. The VREF pin on the UC3844 is a 5.0V reference, which stays at 0V until the VCC voltage reaches the start
Supertex
Original
supertex AN-H29 T flip flop IC uc3844 transformer design uc3844 smps power supply uc3844 PWM power supply application note SMPS CIRCUIT DIAGRAM for computers LR745N3 LR745N8 240VAC AN-H28 AN-H29

uc38458

Abstract: forward converter uc3844 Order this document by UC3844/D UC3844, 45 UC2844, 45 High Performance Current Mode Controllers The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They , . Operating Temperature Range SO­14 Plastic Plastic Rev 1 1 UC3844, 45 UC2844, 45 MAXIMUM , Temperature TJ + 150 °C Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 TA , as close to ambient as possible Tlow = ­20°C for UC3844, UC3845 Thigh = +70°C for UC3844, UC3845
Motorola
Original
uc38458 UC3845 application note UC3845 dc dc applications pin connections UC3844 uc3844 applications uc3844 14 pin ic configuration UC3844/D

unitrode Applications Note U-96

Abstract: UC3642 L E , the following formula. Fosc (kHz) = 1.72 / (Rr (k) * CT (fif) The UC3844 and UC3845 have an internal , %, whereas the UC3844 and UC3845 are clamped to 50% maximum by an Internal toggle flip flop. This duty cycle , to the power circuit directly or through a current transformer, as Figure 11 illustrates. While a
-
OCR Scan
U-101 unitrode unitrode Application Note U-96 500W boost converter uc3843 UC3843 application note soft start unitrode Applications Note uc3843 flyback transformer design uc3842 UC1842/3/4/5 UC1842 UC1844 UC1843 UC1845
Abstract: Order this document by UC3844/D UC3844, 45 UC2844, 45 Advance Information High Performance Current Mode Controllers The UC3844, UC3845 series are high performance fixed frequency current mode , DEVICE DATA 1 UC3844, 45 UC2844, 45 MAXIMUM RATINGS Rating Symbol Value Unit (ICC + , Operating Ambient Temperature UC3844, UC3845 UC2844, UC2845 TA Total Power Supply and Zener Current , possible Tlow = â'"20°C for UC3844, UC3845 Thigh = +70°C for UC3844, UC3845 Tlow = â'"25°C for UC2844 Motorola
Original

UC3844 flyback application note

Abstract: uc3845 flyback 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
ON Semiconductor
Original
uc3845 flyback UC3845 flyback application note UC3844BN equivalent UC3845BN equivalent UC2845 application notes flyback uc3845 application SOIC-14

UC3844 flyback application note

Abstract: off-line flyback regulator uc3845 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 , test to maintain junction temperature as close to ambient as possible. Thigh = +70°C for UC3844
ON Semiconductor
Original
off-line flyback regulator uc3845 UC3845 constant power UC2844 flyback application UC3844 application note uc3845 PWM power supply application note off-line flyback regulator uc3844

UC2844 flyback application

Abstract: forward converter uc3844 (fc) MOTOROLA Advance Information High Performance Current Mode Controllers The UC3844, UC3845 , Block Diagram Pin numbers in parenthesis are for the D sulfa SO-14 package. 1 UC3844, 45 UC2844, 45 , -14 UC2845D SO-14 UC2844N Plastic UC2845N Plastic MOTOROLA ANALOG IC DEVICE DATA 3-573 UC3844, 45 , mW »C/W W "C/W Operating Junction Temperature Tj + 150 °C Operating Ambient Temperature UC3844 , ambient as possible T|0W = 0°C for UC3844, UC3845 TMgh = +70°C for UC3844, UC3845 -25°C for UC2844
-
OCR Scan
EC35-3c8 switch mode power supply using uc3844 UC2845 SO14 AN11160 AN UC3845 uc3845 reference

off-line flyback regulator uc3845

Abstract: uc38458 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
ON Semiconductor
Original
Datasheet of ic uc3845 T Flip-Flop PIN CONFIGURATION OF IC uc3845 scr transformer drive gate uc2844 UC3845 transformer design AN flyback uc2845

UC3844 flyback application note

Abstract: UC3844 flyback transformer UC3844, UC3845, UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series , © Semiconductor Components Industries, LLC, 2004 1 March, 2004 - Rev. 4 Publication Order Number: 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 , must be observed. http://onsemi.com 2 UC3844, UC3845, UC2844, UC2845 ELECTRICAL
ON Semiconductor
Original
MC14551

computer smps circuit diagram

Abstract: uc3844 transformer design LR745's VOUT terminal is connected to the VCC line of a PWM IC, Unitrode part #UC3844. An auxiliary winding on the transformer is used to generate a VCC voltage to power the PWM IC after start-up. The , VOUT LR7 GND VCC PWM IC UC3844 C1 Figure 1: LR745 Start-up Waveforms Stage 16.0 , (100) x (20mA) 100KHz Design Considerations C1 = I. Calculating the value for C1 C1 = , UC3844 is used to bias the ground pin of the LR745. The VREF pin on the UC3844 is a 5.0V reference
Supertex
Original
LR745N8-G computer smps circuit diagram 24 volts smps smps 12 volt uc3844 reference smps smps 12v to 16v SMPS CIRCUIT DIAGRAM USING TRANSISTORS LR745N3-G DSPD-3TO243AAN8 D070908 DSFP-LR745 B123008

forward converter uc3844

Abstract: WIMA MKS 3 , designing the power transformer is the next major step. Vcc Figure 2. Block Diagram of Motorola's UC3844 AN1108 MOTOROLA 3 POWER TRANSFORMER DESIGN Every design engineer seems to have his or her unique way of tackling power transformer design. Factors to consider are core and winding losses, thermal , APPLICATION NOTE AN1108 Design Considerations for a Two Transistor, Current Mode Forward Converter By Kim , describes the design of a 150 W, 150 kHz, two transistor, current mode forward converter. Topics emphasized
-
OCR Scan
WIMA MKS 3 HIGH FREQUENCY Transformer ec35 Distribution transformer EC35 PC40PQ32 EC35 TRANSFORMER pme285mb AN1108/D 26236T

uc3844 transformer design

Abstract: uc3844 reference smps , Unitrode part #UC3844. An auxiliary winding on the transformer is used to generate a VCC voltage to power , VAUX C2 D2 LR7 GND VOUT VCC PWM IC UC3844 C1 Figure 1: LR745 Start-up Waveforms , is calculated as follows: 1 x (100) x (20mA) 100KHz (16V -10V) Design Considerations Sizing the , Figure 3 is recommended. In Figure 3, the VREF pin of the UC3844 is used to bias the ground pin of the LR745. The VREF pin on the UC3844 is a 5.0V reference, which stays at 0V until the VCC voltage reaches
Supertex
Original
B0912 UC3844 application B091208

uc3844 PWM power supply application note

Abstract: 3 watt 70v zener diode Unitrode UC3844 PWM IC during start-up. The commonly used approach utilizes a power resistor and a zener , connected to the VCC line of a PWM IC, Unitrode part #UC3844. The LR7 is used to supply power for the PWM , auxiliary winding on the transformer is used to supply power for the PWM IC. The converter was powered up , start charging C1 as described in stage I. 3-92 LR Series Applications Stage III Design , = 121µJ per clock cycle 3-93 3 LR Series Applications The transformer used has a typical
Supertex
Original
UC3844N 3 watt 70v zener diode 3 watt smps circuit 5v pc smps pwm design UNITRODE DIODE 240 12 watt smps ic AN-D25 8333W 1/100KH

T flip flop pin configuration

Abstract: uc3844 transformer design terminal is connected to the VCC line of a PWM IC, Unitrode part #UC3844. An auxiliary winding on the transformer is used to generate a VCC voltage to power the PWM IC after start-up. The LR7 is used to supply , page 14-9) VIN IIN High Voltage IAUX VAUX D2 C2 LR7 GND VOUT VCC PWM IC UC3844 C1 , UC3844 is used to bias the ground pin of the LR7. The VREF pin on the UC3844 is a 5.0V reference, which , will start to increase up to 16V. Once VCC reaches 16V, the UC3844 will start to operate and VREF will
Supertex
Original
T flip flop pin configuration transistor marking code 1325
Showing first 20 results.