KA3525A
KA3525A is SMPS CONTROLLER manufactured by Fairchild Semiconductor.
SMPS Controller
.fairchildsemi.
Features
- 5V ±1% Reference
- Oscillator Sync Terminal
- Internal Soft Start
- Deadtime Control
- Under Voltage Lockout
Description
The KA3525A is a monolithic integrated circuit that includes all of the control circuits necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, an under voltage lockout, a soft start circuit, and the output driver in the chip.
16-DIP
Internal Block Diagram
VREF 16 VCC 15 GND 12
BAND GAP REF 5V
U.V.L.O.
EA(-) 1 EA(+) 2 EAOUT 9
_
ERR AMP +
C8
(SOFT START)
5K 10
SHUT DOWN
CT 5
5K DISCHARGE
_
PWM P +
LATCH SR
OSCILLATOR
F/F
SYNC...
