Daewoo DSL19M1WC, Service Manual

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53
±
15% ohm pull-low resistor.
7 GND I/O The ground pin of the device.
8 NOUT2 O The number 2 output driver for driving the NMOSFET switch.
9 NOUT1 O The number 1 output driver for driving the NMOSFET switch.
10 VDD I The power supplies pin of the device.
11 PWMOUT O The output pin of low frequency PWM generator. A 2.5V or floating two
state output is provided through this pin.
The internal circuit limits the max. Duty-cycle to
～92%.
12 CTPWM I/O With the internal reference current and an external capacitor connected
here can set the operation frequency of low frequency PWM generator with
1.0V
～
2.5V triangle wave output.
13 PWMDC I Low frequency PWM controlling input. A PWM output comes out by
comparing this DC input and the 1.0
～
2.5V triangle wave that is generated
by CTPWM.
14 CLAMP I
Over voltage clamping. If a>2.0V voltage is detected. A
～
60uA current will
flow into the INN pin to reduce the output of the error amplifier pin CMP to
regulate the output voltage.
15 ISEN I Load current detection pin, the open load situation is detected if a less than
1.3V input is sensed.
16 MODSEL O To set the output polarity of the low frequency PWM controller.
2. AP4511M
N AND P-CHANNEL ENHANCEMENT MODE POWER MOSFET