REG1117_07 Datasheet, PDF (1/35 Pages) Burr-Brown (TI) – 800mA and 1A Low Dropout Positive Regulator 1.8V, 2.5V, 2.85, 3.3V, 5V, and Adjustable

REG1117
REG1117A
SBVS001D − OCTOBER 1992 − REVISED JULY 2004
800mA and 1A Low Dropout Positive Regulator
1.8V, 2.5V, 2.85, 3.3V, 5V, and Adjustable
FEATURES
D FIXED AND ADJUSTABLE VERSIONS
D 2.85V MODEL FOR SCSI-2 ACTIVE
TERMINATION
D OUTPUT CURRENT:
REG1117: 800mA max
REG1117A: 1A max
D OUTPUT TOLERANCE: +1% max
D DROPOUT VOLTAGE:
REG1117: 1.2V max at I_O = 800mA
REG1117A: 1.3V max at I_O = 1A
D INTERNAL CURRENT LIMIT
D THERMAL OVERLOAD PROTECTION
D SOT-223 AND DDPAK SURFACE-MOUNT
PACKAGES
APPLICATIONS
D SCSI-2 ACTIVE TERMINATION
D HAND-HELD DATA COLLECTION DEVICES
D HIGH EFFICIENCY LINEAR REGULATORS
D BATTERY-POWERED INSTRUMENTATION
D BATTERY MANAGEMENT CIRCUITS FOR
NOTEBOOK AND PALMTOP PCs
D 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 (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.
VOLTAGE
1.8V
2.5V
2.85V
3.3V
5V
Adjustable
800mA
SOT-223 DDPAK
n
n
n
n
n
1A
SOT-223 DDPAK
n
n
n
n
n
n
n
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