n Overview
The AN8353UB is a dimmer IC to control illumination of the
car dashboard at high efficiency and high performance by pulse
width control. It outputs pulses at a duty proprotional to an
input voltage.
n Features
• Low power consumption by pulse control
• External ON/OFF control by the standby pin
• Pulse frequency range : 50Hz to 10kHz
• Built-in overvoltage protective circuit approx. 20V
• Wide operating ambient temperature range : –40˚C to+100˚C
• All products temperature cycle, high reliability by normal
and high temperature checks reliability equivalent to the air
bags requested in U.S.
AN8353UB
High Efficiency Car Dashboard Dimmer IC
9
8
7
6
5
4
3
2
0.3
+ 0.1
– 0.05
23.3
–
0.3
6.0– 0.3
2.4– 0.25
3.3– 0.25
1.5
–
0.25
0.5
–
0.1
2.54
1.5
–
0.25
1.4
–
0.3
30˚
3.0– 0.3
Unit : mm
1
9-pin SIL Plastic Package (SIP009-P-0000C)
9
1
2
4
3
6 5 7 8
VCC
Control
Voltage
Conversion
Over
Voltage
Protector
GND
PWM
Comparator
Triangular
Wave Gen.
n Block Diagram