APL5336 Anpec Electronics Corporation, APL5336 Datasheet - Page 10

• Manufacturer Part Number: APL5336
• Description: Source And Sink, 1.5a, Fast Transient Response Linear Regulator
• Manufacturer: Anpec Electronics Corporation

APL5336
Pin Description
Block Diagram
Copyright
Rev. A.2 - Apr., 2008
5, 7, 8 (SOP-8P)
(SOP-8P only)
5 ~ 8 (SOP-8)
Exposed Pad
6 (SOP-8P)
PIN NO.
1
2
3
4
ANPEC Electronics Corp.
VREF
PIN NAME
VCNTL
VOUT
VREF
GND
GND
VIN
NC
Shutdown
Thermal
Current-
Limit
Enable
Main Power Input Pin. Connect this pin to a voltage source and an input capacitor. The
APL5336 sources current to VOUT pin by controlling the upper pass MOSFET, providing a
current path from VIN to VOUT.
Power and Signal Ground. Connect this pin to system ground plane with shortest traces.
The APL5336 sinks current from VOUT pin by controlling the lower pass MOSFET, providing
a current path from VOUT to GND. This pin is also the ground path for internal control
circuitry.
Reference Voltage Input and Active-high Enable Control Pin. Apply a voltage to this pin as a
reference voltage for the APL5336. Connect this pin to a resistor diver, between VIN and
GND, and a capacitor for filtering noise purpose. Applying and holding the voltage below the
enable voltage threshold on this pin by an open-drain transistor shuts down the output.
During shutdown, the VOUT pin has high input impedance.
Output Pin of The Regulator. Connect this pin to load and output capacitors (>8 F MLCC is
necessary) required for stability and improving transient response. The output voltage is
regulated to track the reference voltage and capable of sourcing or sinking current up to
1.5A.
No Internal Connection.
Power Input Pin for Internal Control Circuitry. Connect this pin to a voltage source, providing
a bias for the internal control circuitry. A decoupling capacitor is connected near this pin.
Chip Substrate Connection of The Chip. Connect this pad to system ground plane for good
thermal conductivity.
THSD
V
EN
REF
Soft-Start
Amplifier
VCNTL
Error
and
10
POR
FUNCTION
Power-On-
Reset
VIN
GND
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VOUT