REG1117FA-5.0 Integrated Circuit IC Chip Low Dropout Positive Regulator

REG1117 REG1117A

800mA and 1A Low Dropout Positive Regulator

1.8V, 2.5V, 2.85, 3.3V, 5V, and Adjustable

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 I_O = 800mA

REG1117A: 1.3V max at I_O = 1A

• INTERNAL CURRENT LIMIT

• THERMAL OVERLOAD PROTECTION

• SOT-223 AND DDPAK SURFACE-MOUNT PACKAGES

APPLICATIONS

• SCSI-2 ACTIVE TERMINATION

• HAND-HELD DATA COLLECTION DEVICES

• HIGH EFFICIENCY LINEAR REGULATORS

• BATTERY-POWERED INSTRUMENTATION

• BATTERY MANAGEMENT CIRCUITS FOR

• NOTEBOOK 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 fixedand adjustable-voltage versions, two currents (800mA and 1A) and two package types (SOT-223 and DDPAK). See the chart below for available options.

Output voltage of the adjustable versions is set with two external resistors. The REG1117 low dropout voltage allows its use with as little as 1V input-output voltage differential.

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

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V

Operating Junction Temperature Range . . . . . . . . −40°C to +125°C

Storage Temperature Range . . . . . . . . . . . . . . . . . −65°C to +150°C

Lead Temperature (soldering, 10s)⁽²⁾ . . . . . . . . . . . . . . . . . . +300°C

(1) Stresses above these ratings may cause permanent damage.

(2) See Soldering Methods section.

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