© 2002 Microchip Technology Inc.

DS21665B-page 1

TC2117

Features

• Fixed Output Voltages: 1.8V, 2.5V, 3.0V, 3.3V

• Very Low Dropout Voltage

• Rated 800mA Output Current

• High Output Voltage Accuracy

• Standard or Custom Output Voltages

• Over-Current and Over-Temperature Protection

• Space Saving SOT-223 Package

Applications

• 5V to 3.3V Linear Regulator

• Portable Computers

• Instrumentation

• Battery Operated Systems

• Linear Post-Regulator for SMPS

• Core Voltage Supply for FPGAs, PLDs, CPUs,

DSPs

Device Selection Table

Note: xx indicates output voltages.

Available Output Voltages: 1.8, 2.5, 3.0, 3.3.

Other output voltages are available. Please contact Microchip

Technology Inc. for details.

Package Type

General Description

The TC2117 is a fixed, high accuracy (typically ±0.5%)

CMOS low dropout regulator. Designed specifically for

battery operated systems, the TC2117’s CMOS con-

struction eliminates wasted ground current, signifi-

cantly extending battery life. Total supply current is

typically 80

µA at full load (20 to 60 times lower than in

bipolar regulators).

TC2117 key features include ultra low noise, very low

dropout voltage (typically 450mV at full load), and fast

response to step changes in load. The TC2117 incor-

porates both over-temperature and over-current pro-

tection. The TC2117 is stable with an output capacitor

of only 1

µF and has a maximum output current of

800mA. This device is available in 3-Pin SOT-223, and

3-Pin DDPAK packages.

Typical Application

Part Number

Package

Junction

Temperature Range

TC2117-xxVDB 3-Pin SOT-223

-40°C to +125°C

TC2117-xxVEB

3-Pin DDPAK

-40°C to +125°C

GND

Front View

Front View

12

3

TC2117

TC2117

3-Pin SOT-223

3-Pin DDPAK

TC2117

C1

1

µF

GND

800mA Fixed Low Dropout Positive Regulator