Product Information

SRK1000ATR

SRK1000ATR electronic component of STMicroelectronics

Datasheet
Adaptive Synchronous Rectification Controller for Flyback Converter 6-Pin SOT-23 T/R
Manufacturer: STMicroelectronics
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

1: USD 0.2608 ea
Line Total: USD 0.26

873 - Global Stock
Ships to you between
Fri. 17 May to Thu. 23 May
MOQ: 1  Multiples: 1
Pack Size: 1

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873 - WHS 1


Ships to you between Fri. 17 May to Thu. 23 May

MOQ : 1
Multiples : 1

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SRK1000ATR
STMicroelectronics

1 : USD 0.2608
10 : USD 0.2565
25 : USD 0.2522
100 : USD 0.2471
250 : USD 0.2471
500 : USD 0.2471

873 - WHS 2


Ships to you between Fri. 17 May to Thu. 23 May

MOQ : 23
Multiples : 1

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SRK1000ATR
STMicroelectronics

23 : USD 0.2565
25 : USD 0.2522
100 : USD 0.2471

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Additional Infomation About Product

SRK1000 / SRK1000A /SRK1000B Datasheet Adaptive synchronous rectification controller for flyback converter Features Secondary side synchronous rectification controller optimized for flyback converter. Suitable for QR and mixed CCM/DCM fixed frequency operation. Wide V operating voltage range 3.75 to 32 V. cc CC regulation operation down to 2 V output supported. Very low quiescent current in low consumption mode (160 A). High-voltage sensing input for SR MOSFET drain-source voltage (100 V AMR). Operating frequency up to 300 kHz. High-current gate-drive output for N-MOSFET. Fast turn-on with minimum delay time and adaptive turn-off logic. Programmable min. T and fixed min. T (3 options: SRK1000, SRK1000A, ON OFF SOT23-6L SRK1000B). Low consumption mode entry by primary side burst-mode detection or by detection of SR MOSFET conduction lower than programmed min T . ON SOT23-6L package. Application Battery chargers / quick chargers Adapters USB power delivery (profile 3) Product status link SRK1000 / SRK1000A /SRK1000B Description Product summary SRK1000 / SRK1000A /SRK1000B are controllers intended for secondary side synchronous rectification (SR) in flyback converters, suitable for operation in QR and SRK1000 mixed CCM/DCM fixed frequency circuits. Order code SRK1000ATR They provide a high-current gate-drive output, capable of driving N-channel Power SRK1000BTR MOSFETs. Package SOT23-6L The control scheme of this IC is such that the SR MOSFET is switched on as soon as current starts flowing through its body diode and it is then switched off as current Packing Tape and reel approaches zero. Product label The fast turn-on, with minimum delay, and the innovative adaptive turn-off logic allow maximizing the conduction time of the SR MOSFET and eliminating the effect of parasitic inductance in the circuit. The device enters low consumption mode when it detects primary controller burst- mode operation, or when the SR MOSFET conduction becomes lower than the programmed minimum T . In this way, converter efficiency improves at light load ON where synchronous rectification is no longer beneficial. After the converter restarts switching or the IC detects that the current conduction in the rectifiers has increased 20% above the min T programmed value, the IC exits ON low consumption mode and resumes switching operation. DS12787 - Rev 5 - November 2021 www.st.com For further information contact your local STMicroelectronics sales office.SRK1000 / SRK1000A /SRK1000B Block diagram 1 Block diagram Figure 1. Internal block diagram COMPARATORS HV CLAMP TIMER DVS ON ZCD TON ADAPTIVE CONTROL VAUX CONTROL LOGIC DRIVER POWER GD MANAGEMENT & SWITCH OVER VCC GND DS12787 - Rev 5 page 2/26

HS Compliance

Tariff Desc

8542.31.00 51 No ..Application Specific (Digital) Integrated Circuits (ASIC)

Electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
Monolithic integrated circuits:

Stmicroelectronics may also be referenced as

C-Max
C-Max (VA)
SG3
ST
ST MICROELECTRONICS
ST2
ST7
STM
STMICRELECTRONICS
STN

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