UCC39421
UCC39421 is Multimode High Frequency PWM Controller manufactured by Unitrode.
description
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
ANTI- CROSS COND.
RSEL 19
CHRG 6
PWM CIRCUITRY
CURRENT LIMIT
LOW POWER MODE
SLOPE PENSATION
PFM MODE CONTROL
GND 15
+ X10
ERROR 1.24 V AMP +
ISENSE 12
PGND 5
FB 17
P 18
PFM 16
+
+ 2 CELL
ALKALINE/
+
Ni Cd OR 1 LI- ION
VOUT
50 m V TYP
The UCC39421 family of synchronous
RESET...
