Maker : Advanced Monolithic Systems
Part No. : AMS431LA

  Datasheet PDF : AMS431LA.pdf
  Cross Reference : AMS431LA Cross Reference
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Shortcut : AMS431L  AMS431LA  AMS431LAL  AMS431LAM  AMS431LAM1  AMS431LAN  AMS431LB  AMS431LBL  AMS431LBM  AMS431LBM1  AMS431LBN  AMS431LC  AMS431LCL  AMS431LCM  AMS431LCM1  AMS431LCN 

Product Information

Advanced Monolithic Systems FEATURES • Trimmed 0.5% Tolerance • Wide Operating Current Range 60µA to 100mA µ • Low Reference Input Current 0.4µA µ • Low Dynamic Output Impedance • Low Output Noise • Nominal Temperature Range to 85°C ° • Temperature-Compensated: 60ppm/°C ° AMS431L 1.2V SHUNT REGULATOR APPLICATIONS • Battery Powered Systems • Switching Power Supplies • Adjustable Power Supplies • Telecommunications • Error Amplifiers • Notebook/Personal Computer • 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 (VREF) 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. ±0.5% ±1.0% ±2.0% TO-92 AMS431LAN AMS431LBN AMS431LCN PACKAGE TYPE SOT-89 AMS431LAL AMS431LBL AMS431LCL 3 LEAD SOT-23 AMS431LAM AMS431LBM AMS431LCM 5 LEAD SOT-23 AMS431LAM1 AMS431LBM1 AMS431LCM1 OPERATING TEMP. RANGE -40 to +85° C -40 to +85° C -40 to +85° C PIN CONNECTIONS TO-92 Plastic Package (N) SOT-89 (L) 3L SOT-23 (M) 5L SOT-23 (M1) ANODE 1 2 3 N/C 1 N/C 2 5 ANODE 1 REF ANODE CATHODE 2 3 REF CATHODE CATHODE 3 4 REFERENCE REF ANODE CATHODE Bottom View Top View Top View Top View Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS431L ABSOLUTE MAXIMUM RATINGS (Note 1) Cathode Voltage (VZ) Continuous Cathode Current (IZ) Reference Input Current (IREF) Junction Temperature (TJ) Storage temperature Lead Temperature (Soldering, 10sec.) 20V 100mA 3mA -40°C to +125°C -65°C to +150°C 265°C Internal Power Dissipation (PD) TO-92 Package SOT-89 Package SOT-23-3 Package SOT-23-5 Package Thermal Resistance (θJA) TO-92 Package SOT-89 Package SOT-23-3 Package SOT-23-5 Package 0.78W 0.91W 0.28W 0.3 W 160°C/W 110°C/W 410°C/W 410°C/W Note 1 : Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. ELECTRICAL CHARACTERISTICS Electrical Characteristics at IZ =10 mA and TA = +25°C unless otherwise noted. Parameter Reference Voltage Deviation of Reference Input Voltage over Temperature Ratio of Change in Reference Voltage to Cathode Voltage Reference Input Current Reference Input Current Deviation over Temperature Off State Cathode Current Dynamic Output Impedance Minimum Operating Current VZ = VREF (circuit 1) TA = -40°C to +85°C IZ = 10mA ∆V = from VREF R1 =10kΩ, R2 = ∞Ω (test circuit 2) R1 =10kΩ, R2 = ∞Ω TA = Full Range (test circuit 2) VZ = 6V, VREF = 0V ( test circuit 3) f < 1KHz, VZ = VREF IZ =100µA to 100mA (test circuit 1) VZ = VREF (test circuit 1) 60 80 60 80 60 80 µA 0.15 0.5 0.15 0.5 0.15 0.5 µA Conditions Min 1.234 AMS431LA Typ Max 1.240 10 1.246 25 Min 1.228 AMS431LB Typ Max 1.240 10 1.252 25 Min 1.215 AMS431LC Typ Max 1.240 10 1.265 35 Units V mV -0.5 -2.7 -0.5 -2.7 -0.5 -2.7 mV/V 0.1 0.4 0.1 0.4 0.1 0.4 µA µA Ω 0.04 0.25 0.1 0.4 0.04 0.25 0.1 0.4 0.04 0.25 0.1 0.4 RECOMMENDED OPERATING CONDITIONS: Min VREF 80µA Max 20 V 100mA Cathode Voltage, (VZ) Cathode Current, (IZ) Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS431L TEST CIRCUITS VIN VZ = VREF VIN VZ VIN VZ IREF IZ VR...

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