4
22” TFT TV Service Manual
13/10/2004
11. IC DESCRIPTIONS (FOR ANALOG)
LM1117 PI5V330
LM2576 GM6015
LM317T SAA3010T
TFMS5360 AD9883A
ST24LC21 MC141585
SST37VF040 MC34063
TEA5114A MSP3410G
TEA6415 DS90C385
VPC3230D 4053B
SDA55XX 24C16
TDA9885/86 74LX1G86STR
TDA1308T IRF7314
AN7522N
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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