Sharp HT-CN150DVW Service Manual page 92

IC209, 800mA LOW DROPOUT POSITIVE FIXED 1.8V REGULATOR (IRU1117-33)
Pin Configuration:
Pin Descriptions:
Pin# Pin Symbol
1 GND
2 Vout
3
Block Diagram:
Vin 3
Ground pin. This pin must be connected to ground plane using a low inductance short connection.
The output of the regulator. This pin is also connected to the tab of the package. An output capacitor
must be connected to this pin to insure stability of the regulator.
Input pin of the regulator. Typically a large storage capacitor is connected from this pin to ground to
Vin insure that the input voltage does not sag below the minimum dropout voltage during the load transient
response. This pin must always be 1.3V higher than Vout in order for the device to regulate properly.
+
CURRENT
LIMIT
THERMAL
SHUTDOWN
3
Vin
3
Vin
IRU1117-18
IRU1117-33
2
Vout
2
Vout
1
Gnd
1
Gnd
Pin Description
1.25V
1117-33blk1-1.0
92
HT-CN150DVW
2 Vout
+
1 Gnd