FAN2502S33X
150 mA CMOS LDO Regulators

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Datasheet

Size: 255.88KB
Page: 10
PDF: FAN2502S33X.pdf
  • Description:
    150 mA CMOS LDO Regulators
  • MFG:
    FAIRCHILD [Fairchild Semiconductor]
 

Abstract


www.fairchildsemi.com

REV. 1.1.7 2/14/03

Features

? Ultra Low Power Consumption
? 150 mV dropout voltage at 150 mA
? 25 ?A ground current at 150 mA
? Enable/Shutdown Control
? SOT23-5 package
? Thermal limiting
? 300 mA peak current

Applications

? Cellular Phones and accessories
?PDAs
? Portable cameras and video recorders
? Laptop, notebook and palmtop computers

Description

The FAN2502/03 family of micropower low-dropout voltage
regulators utilize CMOS technology to offer a new level of
cost-effective performance in GSM and TDMA cellular
handsets, Laptop and Notebook portable computers, and
other portable devices. Features include extremely low
power consumption and low shutdown current, low dropout
voltage, exceptional loop stability able to accommodate a
wide variety of external capacitors, and the compact SOT23-5
surface-mount package. The FAN2502/03 family of products
offer significant improvements over older BiCMOS designs
and are pin-compatible with many popular devices. The
output is thermally protected against overload.
The FAN2502 and FAN2503 devices are distinguished by
the assignment of pin 4:

FAN2502:

pin 4 – ADJ, allowing the user to adjust the
output voltage over a wide range using an external voltage
divider.

FAN2502-XX:

pin 4 – BYP, to which a bypass capacitor
may be connected for optimal noise performance. Output
voltage is fixed, indicated by the suffix XX.

FAN2503-XX:

pin 4 – ERR, a flag which indicates that the
output voltage has dropped below the specified minimum
due to a fault condition.
The standard fixed output voltages available are 2.5V, 2.6V,
2.7V, 2.8V, 2.85V, 3.0V, and 3.3V. Custom output voltage are
also available: please contact your local Fairchild Sales
Office for information.

FAN2502, FAN2503

150 mA CMOS LDO Regulators

Block Diagrams
FAN2502
EN
ADJ
GND
Thermal
Sense
p
V
IN
V
OUT
Bandgap
Error
Amplifier
FAN2502-XX
EN
BYP
GND
GND
Bandgap
Thermal
Sense
p
Error
Amplifier
V
IN
V
OUT
FAN2503-XX
EN
ERR
Bandgap
Thermal
Sense
p
Error
Amplifier
V
IN
V
OUT

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