FAN2500-XX Fairchild Semiconductor, FAN2500-XX Datasheet

FAN2500-XX

Manufacturer Part Number

FAN2500-XX

Description

Low-dropout Voltage Regulator

Manufacturer

Fairchild Semiconductor

Datasheet

1.FAN2500-XX.pdf (10 pages)

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Features

• Ultra Low Power Consumption

• 100 mV dropout voltage at 100 mA

• 25 µA ground current at 100 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 FAN2500/01 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

Block Diagrams

FAN2500, FAN2501

100 mA CMOS LDO Regulators

V IN

FAN2500

Bandgap

Thermal

Sense

Error

Amplifier

V IN

FAN2501-XX

GND

ADJ

Bandgap

V OUT

Thermal

Sense

Error

Amplifier

wide variety of external capacitors, and the compact SOT23-5

surface-mount package. The FAN2500/01 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 FAN2500 and FAN2501 devices are distinguished by

the assignment of pin 4:

FAN2500: pin 4 – ADJ, allowing the user to adjust the

output voltage over a wide range using an external voltage

divider.

FAN2500-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.

FAN2501-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.

V IN

FAN2500-XX

Bandgap

GND

Thermal

Sense

ERR

Error

Amplifier

V OUT

www.fairchildsemi.com

GND

BYP

V OUT

REV. 1.0.6 2/14/03

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