AN8353UB Datasheet, PDF (2/4 Pages) Panasonic Semiconductor – High Efficiency Car Dashboard Dimmer IC

s Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
Pin name
Output pin
GND
Input pin
Noise eliminating capacity connection pin 1
Square wave output pin
Triangular wave output pin
Noise eliminating capacity connection pin 2
Standby pin
VCC
Description
Outputs an intermittent source current at a duty proportional to an input voltage
GND
Applies a control voltage.
Connect a capacitor to eliminator a noise.
Output a triangular wave, which serves as a reference for the PWM signal,
to the Pin6 by connecting the resistor RT between the Pins5 and6, and
capacity CT between the Pin6 and GND.
Output a triangular wave, which serves as a reference for the PWM signal,
to this pin by connecting the resistor RT between the Pins6 and 5, and
capasity CT between the Pin6 and GND.
Connect a capacitor to eliminator a noise.
Forces to shut off an output current if a voltage higher than a threshold
voltage of 1.1V is applied to the Pin8.
Supply Voltage
s Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Rating
Unit
Supply voltage
VCC
22
V
Power dissipation
PD
550
mW
Storage temperature
Topr
–40 to +100
˚C
Operating ambient temperature
Tstg
–50 to +150
˚C
s Recommended Operating Range (Ta=25˚C)
Parameter
Symbol
Operating supply voltage range
VCC
Range
8 to 18V
s Electrical Characteristics (Ta=25˚C)
Parameter
Symbol
Supply current
Oscillation frequency
0% duty input voltage
100% duty input voltage
Center duty (VCC=12V)
Center duty (VCC=8V)
Center duty (VCC=18V)
Output duty gain
Output voltage at ON
Leakage current at OFF
Over voltage detection voltage
Standby threshold voltage
ICC
fosc
VIN– 0
VIN– 100
D12V
DD8V
DD18V
DG
VON
IL
VOV
VSTH
Condition
Eliminate CT and RT
CT=0.027µF
CT=0.027µF
CT=0.027µF
CT=0.027µF
CT=0.027µF
CT=0.027µF
CT=0.027µF
CT=2100pF
CT=2100pF
CT=2100pF
CT=2100pF
min
4
90
2
9.5
35
–1
–1
45
0.6
18
0.55
typ max Unit
7.5
11 mA
115 140
Hz
2.5
3
V
10 10.5
V
45
55
%
0
1
%
0
1
%
50
55
%
0.9
1.2
V
0
4
µA
20
22
V
1.1 1.65
V