UPC1909
UPC1909 is SWITCHING REGULATOR CONTROL IC manufactured by NEC.
TURES
- 2 on-chip outputs; for Q and Q
- Capable of directly driving a power MOS-FET
- Drive supply voltage range: 7 V to 24 V
- On-chip remote control circuit
- On-chip pulse-by-pulse overcurrent protection circuit
- On-chip overvoltage latch circuit
ORDERING INFORMATION
Part Number Package 16-pin plastic DIP (300 mils) 16-pin plastic SOP (300 mils)
µPC1909CX µPC1909GS
The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability and additional information.
Document No. G14309EJ1V0DS00 (1st edition) Date Published July 1999 N CP(K) Printed in Japan
©
µPC1909
BLOCK DIAGRAM
CT 16 RT 15 VREF 14 DTC1 13 FB 12 PWM parator 1
- + + OUT1 11 EMI1 10 VCC 9
Oscillator
Reference power supply
ON/OFF control Overvoltage protection Overcurrent protection
+
- - PWM parator 2
1 OV
2 CT2
3 GND
4 OC
5 DTC2
6 OUT2
7...
