Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
Monolithic
LOW COST
500mA REGULATOR
Systems
AMS500
FEATURES
Fixed and Adjustable Versions Available
Output Current up to 500mA
Very Low Quiescent Current
Reverse Battery Protection
Input-output Differential less than 0.6V
Short Circuit Protection
Internal Thermal Overload Protection
Overvoltage Protection
ON/OFF Pin
APPLICATIONS
Cellular Telephones
Portable Consumer Equipment
Portable (Notebook) Computers
Battery Powered Systems
Portable Instrumentation
Radio Control Systems
CD/DVD drives
Automotive
GENERAL DESCRIPTION
The AMS500 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered systems.
These devices feature very low quiescent current of 0.8mA or less when supplying 50mA loads. This unique characteristic and
the low input-output differential required for proper regulation (0.2V for output currents of 100mA) make the AMS500 ideal to
use for standby power systems.
Internal circuitry of AMS500 is protected from input fault conditions caused by input voltages that exceed maximum rated input
voltage. During line transients, when the input voltage to the regulator can momentarily exceed the specified maximum
operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The AMS500 series
also includes internal current limiting, thermal shutdown.
The AMS500 is offered in 3 lead TO-92, SOT-89 and 5 leads SOT-23 packages.
ORDERING INFORMATION
OUTPUT
VOLTAGE
FIXED
ADJ.
X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V.
PACKAGE TYPE
SOT-89
AMS500L-X
TEMP.
RANGE
IND
IND
3L TO-92
AMS500N-X
SOT-23-5
AMS500M1-X
AMS500M1
PIN CONNECTIONS
TO-92
Plastic Package (N)
SOT-89
(L)
5 Lead SOT-23
(M1)
OUTPUT
INPUT
GND
1
2
3
OUTPUT
GND
INPUT
INPUT
OUTPUT
ON/OFF
ADJ / N/C
GROUND
1
2
5
3
4
Bottom View
Top View
Top View