M62295GP Datasheet, PDF (1/11 Pages) Mitsubishi Electric Semiconductor – LCD BACK-LIGHT CONTROL IC

M62295GP
LCD Back-light Control IC
REJ03D0856-0201
Rev.2.01
Nov 14, 2007
Description
M62295GP is a semiconductor integrated circuit designed for PC back-light control, which employs 2 output totempole
output circuit specifically suitable for inverter drive with piezo device.
Such necessary functions as light control, protection circuit are housed in 16-pin SSOP package. This allows for
simplified peripheral circuit as well as compact and thin set design.
Features
• Direct drive to n-ch/p-ch MOSFET
• Fixed output duty: 45%
• Output current (peak): ±300 mA
• Light control
 Pulse synchronous control
Output OFF period is adjusted synchronous with the OSC frequency. (1 kHz-200 kHz)
 Light control available from 10% (Min.) up to 100% by the voltage applied from outside. (Adj2 terminal)
• Protection functions
 2 kinds of timer-latch time setting available by 3 triggers
(few seconds, several tens of seconds set by external capacitor)
Application
LCD Back-light control for Note P.C etc.
Block Diagram
Vref 5
Ref. volt
+
−
IN− 9
−
+
1.25 V
V_CC
15
UVLO
+
−
2.5 V
−
+
0.25 V
2
10
GND FB
P/C
14
ON/OFF
+
−
−
+
RT CT1
11 12
OSC.
CT2
13
V_CC
1 G2
V_CC
Protection circuit
(Timer latch)
6
7
8
Cscp1 Cscp2 Iscp
3
4
N.C Adj2
16 G1
REJ03D0856-0201 Rev.2.01 Nov 14, 2007
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