UM36512S_14 Datasheet, PDF (7/10 Pages) Union Semiconductor, Inc. – 300mA, Micropower, VLDO Linear Regulator

UM365xx
Typical Performance Characteristics (Continued)
Line Transient Response
Load Transient Response
Vin=4.0V to 5.0V
IOUT=10mA to 150mA
VOUT=3.3V (50mV/div)
Iload=150mA, 50us/div
VOUT=3.3V(100mV/div)
VIN=4.3V, 100us/div
Pin Function
GND (Pin 1): Ground and Heat Sink. Solder to a ground plane or large pad to maximize heat
dissipation.
OUT (Pin 2): Voltage Regulated Output. The OUT pin supplies power to the load. A minimum
output capacitor of 1μF is required to ensure stability. Larger output capacitors may be required
for applications with large transient loads to limit peak voltage transients.
IN (Pin 3): Power for UM365xx and Load Power is supplied to the devices through the IN pin.
The IN pin should be locally bypassed to ground if the UM365xx series are more than a few
inches away from another source of bulk capacitance. In general, the output impedance of a
battery rises with frequency, so it is usually advisable to include an input bypass capacitor in
battery-powered circuits. A capacitor in the range of 0.1μF to 1μF is usually sufficient.
Typical Application Circuit
VIN
1μF
IN
OUT
UM365xx
1μF
GND
VOUT
________________________________________________________________________
http://www.union-ic.com Rev.02 Dec.2014
7/10