M5291P/FP
DC/DC Converter
REJ03D0841-0300
Rev.3.00
Jun 15, 2007
Description
M5291 is a semiconductor integrated circuit which is designed for switching regulator control. The device consists of a
comparator, controlled pulse width oscillator (with peak current protection circuit), temperature compensated reference,
and high current output switch.
Especially, this IC was designed for Step-Down and Step-Up and Voltage-Inverting applications.
Features
•
Wide supply voltage range: 2.5 to 40 V
•
Low dissipation current: 1.4 mA
•
Wide range of output
Voltage adjust: 1.17 to 40 V
•
Output switch current: 200 mA
•
Wide range of switching frequency: 100 Hz to 100 kHz
•
Built-in peak current protection circuit
Application
General power supply system
Block Diagram
Switch
collector
1
Q
S
R
8 Driver
Switch
emitter
2
Oscillator
7
Peak current
sense
Timing
capacitor
3
Comparator
1.17 V
Reference
6 V
CC
+
−
5
Comparator
input
Ground
4
REJ03D0841-0300 Rev.3.00 Jun 15, 2007
Page 1 of 9
RENESAS [ RENESAS TECHNOLOGY CORP ]
