Ic Descriptions; Lm1117; General Description; Features - Hitachi 22LD4500UK Service Manual

11. IC DESCRIPTIONS

LM1117

LM2576
LM317T
TFMS5360
ST24LC21
SST37VF040
TEA5114A
TEA6415
VPC3230D
SDA55XX
TDA9885/86
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

TDA1308T
AN7522N
PI5V330
GM6015
SAA3010T
AD9883A
MC141585
MC34063
MSP3410G
DS90C385
LM1084
4