CS51021A
CS51021A is PWM Controller manufactured by onsemi.
features required for AC- DC or DC- DC primary side control. Several features are included eliminating the additional ponents needed to implement them externally. In addition to low startup current (75 m A) and high frequency operation capability, the CS51021A includes overvoltage and undervoltage monitoring, externally programmable dual threshold overcurrent protection, current sense leading edge blanking, current slope pensation, accurate duty cycle control and an externally available 5.0 V reference. The CS51021A features bidirectional synchronization capability. The CS51021A is available in a 16 lead narrow body SOIC package.
Device CS51021A
Sleep/Synch Synch
VCC Start/Stop 8.25 V/7.7 V
Features
- 75 m A Max. Startup Current
- Fixed Frequency Current Mode Control
- 1.0 MHz Switching Frequency
- Undervoltage Protection Monitor
- Overvoltage Protection Monitor with Programmable Hysteresis
- Programmable Dual Threshold Overcurrent Protection with
Delayed Restart
- Programmable Soft Start
- Accurate Maximum Duty Cycle Limit
- Programmable Slope pensation
- Leading Edge Current Sense Blanking
- 1.0 A Sink/Source Gate Drive
- Bidirectional Synchronization
- 50 ns PWM Propagation Delay
- These Devices are Pb- Free and are Ro HS pliant
DATA SHEET .onsemi.
16 1
SOIC- 16 D SUFFIX CASE 751B- 05
PIN CONNECTIONS AND MARKING DIAGRAM
1 GATE ISENSE SLEEP or SYNC SLOPE
UV OV
RTCT ISET
CS5102x AG AWLYWW
16 VC PGND VCC VREF LGND SS
VFB x
= Specific Device Code
= Assembly Location
WL = Wafer Lot
= Year
WW = Work Week
= Pb- Free...
