Ic Descriptions And Internal Block Diagram; Lm1117; General Description; Features - Hitachi 17LD4220 Service Manual

11. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM

LM1117

LM2576
LM317T
ST24LC21
TEA5114A
TEA6415
VPC3230D
SDA55XX
TPA3003D2
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

SOT-23
10091904
Top View
17" TFT TV Service Manual
TDA9885/86
TDA1308T
PI5V330
GM6015
AD9883A
MC141585
MC34063
MSP3400G
DS90C385
NDS8947
TO-220
10091902
Top View
4
TO-252
10091938
Top View
21/09/2004