REG1117-3.3 Ultra-Low Dropout High-Accuracy 3.3V Voltage Regulator with 1A Output Current Limit Thermal Protection & Enable in Miniature Packages

Features

FIXED AND ADJUSTABLE VERSIONS

2.85V MODEL FOR SCSI-2 ACTIVE TERMINATION
OUTPUT CURRENT:

REG1117: 800mA max

REG1117A: 1A max
OUTPUT TOLERANCE: +1% max
DROPOUT VOLTAGE:

REG1117: 1.2V max at lo= 800mA

REG1117A: 1.3V max at lo = 1A

INTERNAL CURRENT LIMITTHERMAL OVERLOAD PROTECTION

SOT-223 AND DDPAK SURFACE-MOUNTPACKAGES

Applications

SC SI-2 ACTIVE TERMINATION

HAND-HELD DATA COLLECTION DEVICES

HIGH EFFICIENCY LINEAR REGULATORS

BATTERY-POWERED INSTRUMENTATION

BATTERY MANAGEMENT CIRCUITS FORNOTEBOOK AND PALMTOP PCS

CORE VOLTAGE SUPPLY: FPGA, PLD, DSP,CPU

Description

The REG1117 is a family of easy-to-use three-terminal voltage regulators. The family includes a variety of fixed-and adjustable-voltage versions, two currents (800mA and 1A) and two package types (S0T-223 and DDPAK). See the chart below for available options.

Output voltage of the adjustable versions is set with two extemnal resistors. The REG1117 low dropout voltage allows its use with as little as iv input-output voltage differential.

Laser trimming assures excellent output voltage accuracy without adiustment. An NPN output stage allows outputstage drive to contribute to the load current for maximum efficiency.

INFORMATION

Drawing

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