AMS3431

Advanced Monolithic Systems FEATURES Trimmed 0.25% Reference Wide Operating Current Range 250µ A to 150mA Low Dynamic Output Impedance Low Output Noise Nominal Temperature Range to 85° C Temperature-Compensated: 60ppm/° C Internal Amplifier with 150mA Capability AMS3431 PRECISION ADJUSTABLE SHUNT REGULATOR APPLICATIONS Battery Powered Systems Switching Power Supplies Adjustable Power Supplies Linear Regulators Error Amplifiers Notebook/Personal Computer Monitors/ VCR/ TV Pagers GENERAL DESCRIPTION The AMS3431 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 2.5V (VREF) and 36V by adding two external resistors. Due to the sharp turn-on characteristics this device is an excellent replacement for zener diodes in many applications. AMS3431 is available in the space saving SOT-23 package and in the TO-92 package. ORDERING INFORMATION: TOL. ±0.25% ±0.5% ±1.0% PACKAGE TYPE TO-92 AMS3431AN AMS3431BN AMS3431CN 3 LEAD SOT-23 AMS3431AM AMS3431BM AMS3431CM OPERATING TEMPERATURE RANGE -40 to +85° C -40 to +85° C -40 to +85° C PIN CONNECTIONS TO-92 Plastic Package (N) 3L SOT-23 (M) ANODE 1 2 3 CATHODE ANODE REF CATHODE REF Bottom View Top View Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3431 ABSOLUTE MAXIMUM RATINGS (Note 1) Cathode Voltage (VZ) Continuous C...