AME, Inc.
AME1505
High Power BiPolar Linear LDO
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General Description
The AME1505 is a 5A low-dropout positive voltage regu-
lator. The dropout voltage of AME1505 is 750mV at maxi-
mum output current. The output voltage is preset at fac-
tory. It is available in fixed and adjustable output voltage
versions. The fixed voltage range could expand from 1.25V
to 3.7V, where 5V and 3.3V voltage supplies are avail-
able. AME1505 has 2 new features: First, a remote Sense
pin is wired out to eliminate output voltage variation due
to load changes. Secondly, an extra Control pin is avail-
able to effectively decrease Vin to Vo drop. It greatly
improves the power dissipation.
Overcurrent and thermal protection are integrated onto
the chip. Output current will limit as it reaches the pre-
set current. AME1505 series have excellent regulation
over line, load and temperature variations.
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Functional Block Diagram
V
CONTROL
V
POWER
Current
Limiting
Amplifier
Thermal
Protection
Output
Sense
Error
Amp.
Bandgap
Reference
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Features
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Low dropout voltage --- 750mV at 5A
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Adjustable or 1.25~3.7V fixed voltage
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Line regulation 3 mV maximum
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Load regulation 7mV maximum
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Adjust pin (ADJ) current less than 120µA
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Dual voltage supplies is recommended
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Overcurrent protection
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Available in TO-220-5, TO-263-5
3.3V
ADJ/GND
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Typical Application
V
power
V
OUT
2.5V
5.0V
AME1505
V
control
ADJ
V
SENSE
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Applications
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VGA Card Supplies
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Post Regulators for Switching Supplies
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Microprocessor Supply
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Chipset Supplies
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LCD Monitor Power
GND
V
REF
100 ohm
100 ohm
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AME [ ANALOG MICROELECTRONICS ]
