M5291P Datasheet, PDF (1/10 Pages) Mitsubishi Electric Semiconductor – DC-DC CONVERTER

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
Switch ₂
emitter
Timing ₃
capacitor
Ground 4
Q
S
R
Oscillator
1.17 V
Reference
Comparator
+
−
8 Driver
7 ^{Peak current}
sense
6 V_CC
5 ^Comparator
input
REJ03D0841-0300 Rev.3.00 Jun 15, 2007
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