4
11. IC DESCRIPTIONS
LM1117
TDA1308T
LM2576
AN7522N
LM317T
PI5V330
TFMS5360
GM6015
ST24LC21
SAA3010T
SST37VF040
AD9883A
TEA5114A
MC141585
TEA6415
MC34063
VPC3230D
MSP3410G
SDA55XX
DS90C385
TDA9885/86
LM1084
11.1. LM1117
11.1.1. General Description
The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current.
It has the same pin-out as National Semiconductor’s industry standard LM317. The LM1117 is available in
an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external
resistors. In addition, it is also available in five fixed voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V.
The LM1117 offers current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap
reference to as-sure output voltage accuracy to within ±1%. The LM1117 series is available in SOT-223,
TO-220, and TO-252 D-PAK packages. A minimum of 10µF tantalum capacitor is required at the output to
improve the transient response and stability.
11.1.2. Features
• Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable Versions
• Space Saving SOT-223 Package
• Current Limiting and Thermal Protection
• Output Current 800mA
• Line Regulation 0.2% (Max)
• Load Regulation 0.4% (Max)
• Temperature Range
LM1117 0°C to 125°C
LM1117I -40°C to 125°C
11.1.3. Applications
• 2.85V Model for SCSI-2 Active Termination
• Post Regulator for Switching DC/DC Converter
• High Efficiency Linear Regulators
• Battery Charger
• Battery Powered Instrumentation
11.1.4. Connection Diagrams
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