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ML4990FE-R52 Ohmite Mfg Co Fixed Resistor, Metal Film, 0.5W, 499ohm, 200V, 1% +/-Tol, 50ppm/Cel, Through Hole Mount, AXIAL LEADED visit Digikey Buy

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L4990 Datasheet

Part Manufacturer Description PDF Type
L4990 STMicroelectronics PRIMARY CONTROLLER Original
L4990 STMicroelectronics PRIMARY CONTROLLER Scan
L4990 STMicroelectronics PRIMARY CONTROLLER Scan
L4990 STMicroelectronics PRIMARY CONTROLLER Scan
L4990 STMicroelectronics PRIMARY CONTROLLER Scan
L4990 STMicroelectronics PRIMARY CONTROLLER Scan
L4990A STMicroelectronics PRIMARY CONTROLLER Original
L4990A STMicroelectronics PRIMARY CONTROLLER Scan
L4990A STMicroelectronics PRIMARY CONTROLLER Scan
L4990A STMicroelectronics PRIMARY CONTROLLER Scan
L4990A STMicroelectronics PRIMARY CONTROLLER Scan
L4990A STMicroelectronics PRIMARY CONTROLLER Scan
L4990AD STMicroelectronics PRIMARY CONTROLLER Original
L4990AD STMicroelectronics PRIMARY CONTROLLER Scan
L4990AD STMicroelectronics PRIMARY CONTROLLER Scan
L4990AD STMicroelectronics PRIMARY CONTROLLER Scan
L4990AD STMicroelectronics PRIMARY CONTROLLER Scan
L4990AD STMicroelectronics PRIMARY CONTROLLER Scan
L4990D STMicroelectronics PRIMARY CONTROLLER Original
L4990D STMicroelectronics PRIMARY CONTROLLER Scan
Showing first 20 results.

L4990

Catalog Datasheet MFG & Type PDF Document Tags

philips 3f3 ferrite

Abstract: 1N4148 ST L4990 L4990A ® PRIMARY CONTROLLER CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz , PACKAGE: DIP16 AND SO16W MULTIPOWER BCD TECHNOLOGY DIP16 SO16W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (SO16W) line or DC-DC power supply applications using a fixed frequency , December 1998 PGND 6 COMP D98IN1002 1/24 L4990 - L4990A ABSOLUTE MAXIMUM RATINGS Symbol , no limitation is imposed Not connected L4990 - L4990A ELECTRICAL CHARACTERISTICS (VCC = 15V
STMicroelectronics
Original
BCD60II philips 3f3 ferrite 1N4148 ST bjt 2n2222 driver circuit ac-dc adapter npn bjt 2N2222 bjt 2n2222 L4990/L4990A L4990D/L4990AD

philips 3f3 ferrite

Abstract: ac-dc adapter L4990 L4990A PRIMARY CONTROLLER CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW , : DIP16 AND SO16W MULTIPOWER BCD TECHNOLOGY DIP16 SO16W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (SO16W) line or DC-DC power supply applications using a fixed frequency current mode , March 1998 PGND 6 COMP D95IN196B 1/24 L4990 - L4990A ABSOLUTE MAXIMUM RATINGS Symbol , %. If it is left floating or grounded no limitation is imposed Not connected L4990 - L4990A
STMicroelectronics
Original
isolated feedback flyback converter circuits using BJT 2N2222 in transistor ACDC adaptor T2A250V variac used as a battery charger philips 100nF film 400V

L4998

Abstract: flyback smps battery charger design using ice SGS-THOMSON L4990 L4990A PRIMARY CONTROLLER â  CURRENT-MODE CONTROL PWM â  SWITCHING , BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP1 6) L4990 D , scs-thomson 5S«CB@(3LI1Câ"¢@IBI)SS This Material Copyrighted By Its Respective Manufacturer L4990 - L4990A , Manufacturer L4990 - L4990A ELECTRICAL CHARACTERISTICS (continued.) Symbol Parameter Test Condition Min. Typ , Vccon; Isink = 10mA 1.0 V SUPPLY SECTION VcCON Startup voltage L4990 L4990A 15 7.8 16 8.4 17 9
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OCR Scan
AN890 L4998 flyback smps battery charger design using ice 4925 B equivalent ic Switching mode power adaptor 12v 0,5a CB flyback transformer philips TV 29 inch D/L4990AD AN889 AN891 AN908

boost uc3842 application note

Abstract: boost with uc3842 examples are the L4990 (PWM primary contoller provided with I/O sync.) and theUC3842 (PWM controller without any dedicated pin for sync.). When L4990 with L4981A are used, different situations can be considered : The PFC controller L4981A is the master and the L4990 is the slave (see fig. 1). Since the L4990 , L4990 is the master and the L4981A is the slave (see fig. 2). Figure 1: Sync. example with L4981A used as master. L4981A 16 MASTER 1 L4990 SLAVE (fsw1)OSC fsw1 > fsw2 (fsw2)OSC
STMicroelectronics
Original
boost uc3842 application note boost with uc3842 UC3842 D95IN295A 1N4148 D95IN296A D95IN297
Abstract: ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (S016W) line or DC-DC power supply applications , r = 7 S G S -T H O M S O N ^ 7 #« L4990 L4990A PRIMARY CONTROLLER â  â  â  â  â , Not connected rrz SGS-THOMSON * 7 # MICMBLBCtmOIIICS L4990 - L4990A ELECTRICAL , Masking Time rz7 SGS-THOMSON Ã" 7# SäöffiH@ llUlCTR© lülö(ES 3/24 L4990 - L4990A , Isink V SUPPLY SECTION VcCON Startup voltage L4990 L4990A 15 7.8 16 8.4 17 9 -
OCR Scan
L6380 PCIM96

philips 3f3 ferrite

Abstract: transistor KT 816 : DIP16 AND S 0 16 W MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (S016W) DESCRIPTION This primary controller I.C., developed in BCD60II , SGND 12 1 4 W- - Ô VFB CO M P May 1997 1/24 L4990 - L4990A ABSOLUTE MAXIMUM , L4990 - L4990A ELECTRICAL CHARACTERISTICS (Vcc = 15 V ; Tj = 0 to 70°C; unless otherwise specified , # rrz SGS-THOMSON L4990 - L4990A ELECTRICAL CHARACTERISTICS (continued.) Symbol OUTPUT SECTION V
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OCR Scan
transistor KT 816 dz 300 AN-890

transformer winding formula 220v Ac to 12v Dc

Abstract: KTC1815Y APPLICATION NOTE SMPS WITH L4990 FOR MULTISYNC MONITORS by CW Park & G. Gattavari , supplies, the component count is dramatically reduced . The L4990 allows to design high performance power , supply. The high performance PWM controller L4990 is being used to meet new spec requirements for , L4990 is a current mode controller developed to implement single-ended topologies, off-line flyback and , The L4990 is based on a current mode architecture. Fig. 1 shows the current mode control circuit in
STMicroelectronics
Original
transformer winding formula 220v Ac to 12v Dc KTC1815Y 220V ferrite core transformer free data transformer calculation 12v transformer winding formula 220V ferrite core transformer
Abstract: ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (S016W ) line or DC-DC power supply applications , r = 7 S G S -T H O M S O N ^ 7 #« L4990 L4990A PRIMARY CONTROLLER â  â  â  â  â , MICMBLBCtmOIIICS * 7 # L4990 - L4990A ELECTRICAL CHARACTERISTICS (Vcc = 15V; Tj = 0 to 70°C; unless , /24 L4990 - L4990A ELECTRICAL CHARACTERISTICS (continued.) Symbol Param eter T est , VcCON Startup voltage L4990 L4990A 15 7.8 16 8.4 17 9 V V VcCOFF Minimum O -
OCR Scan

vrm pentium 4

Abstract: L4990 L4990 Low Cost Active Clamp for High Frequency Applications - AN881 Appl. Note Serigraphy 104mm 65mm Component Layer Back layer L4990 SMPS with L4990 for Multisinch Monitor Applications - AN891 Appl. Note Serigraphy L4990 SMPS with L4990 for Multisinch Monitor Applications - AN891 Appl. Note 182mm 77.5mm Bottom Layer L4990 High Performance VRM Using L4990A for , L4990 High Performance VRM Using L4990A for Pentium Pro® Processor Applications AN908 Appl. Note
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Original
vrm pentium 4 SMPS 30 SMPS primary controller circuit of smps vrm pentium pro EVAL4990-30

boost uc3842 application note

Abstract: uc3842 power factor . The devices that have been considered in the following examples are the L4990 (PWM primary contoller provided with I/O sync.) and the UC3842 PWM controller without any dedicated pin for sync.). When L4990 , and the L4990 is the slave (see fig. 1). Since the L4990 is provided with a positive edge input sync., the two sync. pins can be simply wired together. The L4990 is the master and the L4981A is the slave (see fig. 2). Figure 1. Sync. example with L4981A used as master. L4981A L4990 16 1
STMicroelectronics
Original
AN832 uc3842 power factor uc3842 application circuit uc3842 smps uc3842 application note UC3842 boost uc3842 application D95IN296B D95IN297A

L4998

Abstract: schematic smps 300W SGS-THOMSON L4990 L4990A PRIMARY CONTROLLER â  CURRENT-MODE CONTROL PWM â  SWITCHING , BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990 D , D95IN196A February 1997 1/24 This Material Copyrighted By Its Respective Manufacturer L4990 - L4990A , scs-thomson 5S«CB@(3LI1Câ"¢@IBI)SS This Material Copyrighted By Its Respective Manufacturer L4990 - L4990A , osioÅ"reiiLiieiiTOMiES 3/24 This Material Copyrighted By Its Respective Manufacturer L4990 - L4990A ELECTRICAL
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OCR Scan
schematic smps 300W TWT Wiring STPS20100CT
Abstract: off MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(D IP16) L4990D , L4990 L4990A PRIMARY CONTROLLER â  â  â  â  â  â  â  â  â  â  â  â  â , . BLOCK DIAGRAM S YN C July 1998 DC-LIM 1/24 L4990 - L4990A ABSOLUTE MAXIMUM RATINGS Symbol , it is left floating or grounded no limitation is imposed Not connected L4990 - L4990A , V 100 ns LEADING EDGE BLANKING Internal Masking Time 3/24 L4990 - L4990A ELECTRICAL -
OCR Scan

philips 3f3 ferrite

Abstract: variac used as a battery charger : DIP16 AND S 0 1 6 W MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990 D/L4990AD (S016W) DESCRIPTION This primary controller I.C., developed in BCD60II , SGND 12 1 4 W- - Ô VFB CO M P March 1998 1/24 L4990 - L4990A ABSOLUTE MAXIMUM , N L4990 - L4990A ELECTRICAL CHARACTERISTICS (Vcc = 15 V ; Tj = 0 to 70°C; unless otherwise , L4990 - L4990A ELECTRICAL CHARACTERISTICS (continued.) Symbol OUTPUT SECTION V ol VoH Parameter
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OCR Scan

24v to 12v dc power supply with uc3842

Abstract: 24v dc power supply with uc3842 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (S016W) line or DC-DC power supply , G7. SGS-IHOMSON ;y L4990 L4990A PRIMARY CONTROLLER PRODUCT PREVIEW â  CURRENT-MODE , Copyrighted By Its Respective Manufacturer L4990 - L4990A ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value , By Its Respective Manufacturer L4990 - L4990A ELECTRICAL CHARACTERISTICS (Vcc = 15V;Tamb = 0 to 70 , Start Threshold L4990 L4990A 15 7.8 16 8.4 17 9 V V op Minimum Operating L4990 L4990A 9 7 10 7.6 11 8.2
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OCR Scan
24v to 12v dc power supply with uc3842 24v dc power supply with uc3842 EFD25-3F3 24v to 5v dc power supply with uc3842 S6NF

L4981A

Abstract: uc3842 devices that have been considered in the following examples are the L4990 (PWM primary contoller provided with I/O sync.) and theUC3842 (PWM controller without any dedicated pin for sync.). When L4990 with , the L4990 is the slave (see fig. 1). Since the L4990 is provided with a positive edge input sync., the two sync. pins can be simply wired together. The L4990 is the master and the L4981A is the slave (see fig. 2). Figure 1: Sync. example with L4981A used as master. L4981A L4990 16 1
STMicroelectronics
Original
UC3842 SGS pwm contoller circuits

boost uc3842 application note

Abstract: uc3842 that have been considered in the following examples are the L4990 (PWM primary contoller provided with I/O sync.) and theUC3842 (PWM controller without any dedicated pin for sync.). When L4990 with , the L4990 is the slave (see fig. 1). Since the L4990 is provided with a positive edge input sync., the two sync. pins can be simply wired together. The L4990 is the master and the L4981A is the , configuration. Figure 1: Sync. example with L4981A used as master. L4981A L4990 16 1 MASTER
STMicroelectronics
Original

flyback smps 300w

Abstract: bjt 2n2222 driver circuit L4990 L4990A ® PRIMARY CONTROLLER CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz , PACKAGE: DIP16 AND SO16W MULTIPOWER BCD TECHNOLOGY DIP16 SO16W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D/L4990AD (SO16W) line or DC-DC power supply applications using a fixed frequency , July 1999 PGND 6 COMP D98IN1002 1/24 L4990 - L4990A ABSOLUTE MAXIMUM RATINGS Symbol , no limitation is imposed Not connected L4990 - L4990A ELECTRICAL CHARACTERISTICS (VCC = 15V
STMicroelectronics
Original
flyback smps 300w 12v 50 A battery charger smps schematic schematic diagram ac-dc supply flyback transformer philips TV 29 inch diagram

300W HI FI AMPLIFIER

Abstract: L4998 SGS-THOMSON L4990 L4990A PRIMARY CONTROLLER â  CURRENT-MODE CONTROL PWM â  SWITCHING , BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990 D , D95IN196B May 1997 1/24 This Material Copyrighted By Its Respective Manufacturer L4990 - L4990A , scs-thomson 5S«CB@(3LI1Câ"¢@IBI)SS This Material Copyrighted By Its Respective Manufacturer L4990 - L4990A , Its Respective Manufacturer L4990 - L4990A ELECTRICAL CHARACTERISTICS (continued.) Symbol Parameter
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OCR Scan
300W HI FI AMPLIFIER 220 volt double pole switch circuit diagram AC-DC Battery Charger -Constant Current with volt smps 300W ferrite transformer 12V battery charger 12 VOLT 10 AMP smps CIM96

transformer winding formula 220v Ac to 12v Dc

Abstract: T3.15A 250V AN891 APPLICATION NOTE ® SMPS WITH L4990 FOR MULTISYNC MONITORS by CW Park & G. Gattavari , supplies, the component count is dramatically reduced . The L4990 allows to design high performance power , supply. The high performance PWM controller L4990 is being used to meet new spec requirements for , L4990 is a current mode controller developed to implement single-ended topologies, off-line flyback and , The L4990 is based on a current mode architecture. Fig. 1 shows the current mode control circuit in
STMicroelectronics
Original
T3.15A 250V 2.2NF 600V flyback transformer FBT 18 RGP100 110 volt ac transformer less power supply 90v 1W ZENER DIODE 90V
Abstract: off MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D , S G S -1H 0 M S 0 N L4990 L4990A > PRIMARY CONTROLLER PRODUCT PREVIEW CURRENT-MODE , GG77nfl böT 3/13 L4990 - L4990A ELECTRICAL CHARACTERISTICS (continued.) Symbol Parameter , VOLTAGE LOCKOUT SECTION L4990 L4990A L4990 L4990A L4990 L4990A Start Threshold op Vhys , ­ SGS-THOMSON RMCflMJamHOCS L4990 - L4990A charged again, to ensure that the fault frequency does not -
OCR Scan
2T537 7T2T537 7TE1E37 D077507
Abstract: off MULTIPOWER BCD TECHNOLOGY DIP16 S016W ORDERING NUMBERS: L4990/L4990A(DIP16) L4990D , b?fl01 STD â  L4990 - L4990A ABSOLUTE MAXIMUM RATINGS Symbol Vcc l0UT Parameter Value , 457 L4990 - L499QA ELECTRICAL CHARACTERISTICS (Vcc = 15V;Tamb = 0 to70°C; unless otherwise , SCS-THOMSON fiaa*ssuffi?RMncs 7=12^237 00b7003 3b3 â  3/12 L4990 - L4990A ELECTRICAL CHARACTERISTICS , 1.0 V UNDERVO LTAGE LOCKOUT SECTION Start Threshold op Vhys L4990 L4990A 15 7.8 16 -
OCR Scan

transformer winding formula 220v Ac to 12v Dc

Abstract: KTC1815Y APPLICATION NOTE SMPS WITH L4990 FOR MULTISYNC MONITORS by CW Park & G. Gattavari , supplies, the component count is dramatically reduced . The L4990 allows to design high performance power , supply. The high performance PWM controller L4990 is being used to meet new spec requirements for , L4990 is a current mode controller developed to implement single-ended topologies, off-line flyback and , The L4990 is based on a current mode architecture. Fig. 1 shows the current mode control circuit in
STMicroelectronics
Original
schematic diagram AC to DC converter 800W 220v ac to 12V 10A SMPS KTC-1815Y 220V to 12V AC transformer 12w NA60FI zd71
Showing first 20 results.