Analog Microelectronics, Inc.
1
AME1084
5A Low Dropout
Positive Voltage Regulator
n Functional Block Diagram
n General Description
The AME1084 is a 5A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output volt-
age versions. Overcurrent and thermal protection are
integrated onto the chip. Output current will limit as it
reaches the pre-set current or temperature limit. At full
rated output current the dropout voltage is 1.4V (max.).
AME1084 series regulators provide excellent regulation
over line, load and temperature variations.
n Key Features
l Low dropout voltage
…
1.4V at 5A
l Adjustable or 3.3V fixed voltage
l Line regulation typically 0.015%
l Load regulation typically 0.05%
l Adjust pin (ADJ) current less than 90µA
l Overcurrent protection
l Thermal protection
l Available in TO-220, TO-263, TO-252
n Applications
l High Efficiency Linear Regulators
l Post Regulators for Switching Supplies
l 5V to 3.3V Voltage Converter
l Battery Charger
Figure 1
Thermal
Protection
Bandgap
Reference
Current
Limiting
Amplifier
Input
Output
ADJ/GND
Error
Amp.
Figure 2
n Typical Application
AME1084
Load10µF Tan10µF Tan
4.75V to 5.25V
V
IN
GND
V
OUT