UCC39421 controller equivalent, multimode high frequency pwm controller.
include pulse-by-pulse current limiting, and a low 5-µA quiescent current during shutdown. The UCC39422 incorporates programmable power-on reset circuitry and an uncommit.
D Up to 2-MHz Oscillator D Synchronizable Fixed Frequency
Operation
D High-Efficiency Low-Power Mode D High-Efficiency a.
SYNC/SD 13
RT 14
1.8 V(MIN)
1.24 V VREF
PWM OSC
VPUMP 7
VIN 9
CHARGE PUMP
VPUMP
8 CP
3 VOUT
2 RSEN RECT
4
ANTI− CROSS COND.
VGD
RSEL 19
CHRG 6
PWM CIRCUITRY
CURRENT LIMIT
LOW POWER MODE
SLOPE COMPENSATION
PFM MODE CONTROL
GND 15
+ X10
ERR.
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