Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced AMS431L
Monolithic 1.2V SHUNT REGULATOR
Systems
FEATURES APPLICATIONS
• Trimmed 0.5% Tolerance • Battery Powered Systems
• Wide Operating Current Range 60 µA to 100mA • Switching Power Supplies
• Low Reference Input Current 0.4 µA • Adjustable Power Supplies
• Low Dynamic Output Impedance • Telecommunications
• Low Output Noise • Error Amplifiers
• Nominal Temperature Range to 85 °C • Notebook/Personal Computer
• Temperature-Compensated: 60ppm/ °C • Monitors/ VCR/ TV
• Pagers
GENERAL DESCRIPTION
The AMS431L is a three-terminal adjustable shunt regulator with guaranteed temperature stability over the entire range of
operation. The output voltage can be set to any value between 1.24V (V REF ) and 20V by adding two external resistors. The
AMS431L features 0.5% initial tolerance, low dynamic output impedance and operates over a wide current range. Due to the
sharp turn-on characteristics this device is an excellent replacement for zener diodes in many applications.
AMS431 is available in TO-92, SOT-89, 3 pin SOT-23 and 5 pin SOT-23 packages.
ORDERING INFORMATION:
TOL. PACKAGE TYPE OPERATING
TO-92 SOT-89 3 LEAD SOT-23 5 LEAD SOT-23 TEMP. RANGE
±0.5% AMS431LAN AMS431LAL AMS431LAM AMS431LAM1 -40 to +85 ° C
±1.0% AMS431LBN AMS431LBL AMS431LBM AMS431LBM1 -40 to +85 ° C
±2.0% AMS431LCN AMS431LCL AMS431LCM AMS431LCM1 -40 to +85 ° C
PIN CONNECTIONS
TO-92 SOT-89 3L SOT-23 5L SOT-23
Plastic Package (N) (L) (M) (M1)
1 2 3
REF
ANODE
CATHODE
1 2 3
CATHODEANODEREF CATHODEREF
ANODE
N/C ANODE
CATHODE REFERENCE
N/C
1
2
5
3 4
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