AME1117 Datasheet, PDF (1/15 Pages) Analog Microelectronics – 1A Low Dropout Positive Voltage Regulator

Analog Microelectronics, Inc.
AME1117
1A Low Dropout Positive
Voltage Regulator
nGeneral Descriptions
The AME1117 is a 1A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output
voltage versions. Overcurrent and thermal protection
are integrated onto the chip. Output current will limit
as while it reaches the pre-set current or temperature
limit. The dropout voltage is specified at 1.4V Maxi-
mum at full rated output current. The AME1117 series
provides excellent regulation over line, load and tem-
perature variations.
nKey Features
l Low dropout voltage ..............1.2V at 1A
l Adjustable or fixed voltages 2.5V, 3.3V, 5.0V
l Typical line regulation ....... 0.2%
l Typical load regulation ...... 0.15%
l Adjust pin current less than 90µA
l Overcurrent protection
l Thermal protection
l Available in TO-220, TO-252, SOT-223
nApplications
l High Efficiency Linear Regulators
l 5V to 3.3V Voltage Converter
l Battery Charger
l Post Regulators for Switching Supplies
nFunctional Block Diagram
Input
C u rre n t
Lim iting
Am plifier
n Typical Application
4.75V to 12V
AME1117
GND
10µF Tan
10µF Tan Load
Therm al
P ro te c tio n
O u tp u t
Error
Am p.
Bandgap ^ADJ/COM
R e fe re n c e
Input range depends on V_OUT
Please refer to electrical characteristics.
Figure 1
Figure 2
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