CS5253-1GDPR5 Cherry Semiconductor Corporation, CS5253-1GDPR5 Datasheet - Page 3

• Manufacturer Part Number: CS5253-1GDPR5
• Description: 3A LDO 5-Pin Adjustable Linear Regulator
• Manufacturer: Cherry Semiconductor Corporation

5Lead D
PACKAGE PIN #
V
V
1
2
3
4
5
CONTROL
POWER
2
PAK
BIAS
TSD
and
V
Adjust
V
V
V
PIN SYMBOL
SENSE
OUT
CONTROL
POWER
V
REF
Package Pin Description
-
+
Block Diagram
EA
This Kelvin sense pin allows for remote sensing of the output
voltage at the load for improved regulation. It is internally
connected to the positive input of the voltage sensing error
amplifier.
This pin is connected to the low side of the internally trimmed
1% bandgap reference voltage and carries a bias current of
about 50µA. A resistor divider from Adj to V
to ground sets the output voltage. Also, transient response can
be improved by adding a small bypass capacitor from this pin
to ground.
This pin is connected to the emitter of the power pass transistor
and provides a regulated voltage capable of sourcing 3A of
current.
This is the supply voltage for the regulator control circuitry. For
the device to regulate, this voltage should be between 0.9V and
1.3V (depending on the output current) greater than the
output voltage. The control pin current will be about 1% of the
output current.
This is the power input voltage. The pin is physically connected
to the collector of the power pass transistor. For the device to
regulate, this voltage should be between 0.1V and 0.6V greater
than the output voltage, depending on output current. The out-
put load current of 3A is supplied through this pin.
3
IA
+
-
FUNCTION
OUT
Adjust
V
V
OUT
SENSE
and from Adj