AMS431 ADMOS | Alldatasheet

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Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 Advanced AMS431 Monolithic PRECISION ADJUSTABLE SHUNT REGULATOR Systems FEATURES APPLICATIONS

  • • Trimmed 0.25% Reference •• Battery Powered Systems
  • • Wide Operating Current Range 250 µµA to 150mA •• Switching Power Supplies
  • • Low Dynamic Output Impedance •• Adjustable Power Supplies
  • • Low Output Noise •• Linear Regulators
  • • Nominal Temperature Range to 85 °°C •• Error Amplifiers
  • • Temperature-Compensated: 60ppm/ °°C •• Notebook/Personal Computer
  • • Internal Amplifier with 150mA Capability •• Monitors/ VCR/ TV
  • • Pagers GENERAL DESCRIPTION The AMS431 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. AMS431 is available in TO-92, SO-8, SOT-89 and SOT-23 packages. ORDERING INFORMATION: TOL. PACKAGE TYPE OPERATING TO-92 8 LEAD SOIC SOT-89 3 LEAD SOT-23 TEMP. RANGE ±0.25% AMS431AN AMS431AS AMS431AL AMS431AM -40 to +85 ° C ±0.5% AMS431BN AMS431BS AMS431BL AMS431BM -40 to +85 ° C ±1.0% AMS431CN AMS431CS AMS431CL AMS431CM -40 to +85 ° C PIN CONNECTIONS TO-92 8L SOIC SOT-89 3L SOT-23 Plastic Package (N) SO Package (S) (L) (M) 1 2 3 REF ANODE CATHODE ANODE N/CN/C ANODEANODE ANODE

1 REFCATHODE

CATHODEANODEREF CATHODEREF ANODE 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 AMS431 ABSOLUTE MAXIMUM RATINGS (Note 1) Cathode Voltage (V Z ) 37V Internal Power Dissipation (P D ) Continuous Cathode Current (I Z ) -10mA to +150mA TO-92 Package 0.78W Reference Input Current (I REF ) 10mA SO-8 Package 0.71W Junction Temperature (T J ) -40 °C to +125 °C SOT-89 Package 0.91W Storage temperature -65 °C to +150 °C Thermal Resistance ( ϕJA ) Lead Temperature (Soldering, 10sec.) 265 °C TO-92 Package 160 °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 I Z =10 mA and T A = +25°C unless otherwise specified. Parameter Conditions AMS431A Min Typ Max AMS431B Min Typ Max AMS431C Min Typ Max Units Deviation of Reference Input Voltage over Temperature V Z = V REF (circuit 1) T A = +25 °C to +85 °C T A = -40 °C to +25 °C 8.0 8.0 8.0 8.0 8.0 8.0 mV mV Reference Voltage to Reference Input Current R1 =10k Ω , R2 = ∞ Ω (test circuit 2) Reference Input Current Deviation over Temperature R1 =10k Ω , R2 = ∞ Ω T A = Full Range (test circuit 2) Off State Cathode Current V Z = 36V, V REF = 0V ( test circuit 3) Dynamic Output Impedance f < 1KHz, V Z = V REF I Z =100 µA to 100mA (test circuit 1) Minimum Operating Current V Z = V REF (test circuit 1) 100 250 100 250 100 250 µA RECOMMENDED OPERATING CONDITIONS: Min Max Cathode Voltage, (V Z ) V REF 36 V Cathode Current, (I Z ) 0.25mA 120mA

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS431 TYPICAL APPLICATIONS (Continued ) Over Voltage/Under Voltage Protection Circuit Voltage Monitor R1A R2A R1B R2B OUT ON WHEN LOW < V+ < HIGH LIMIT LIMIT LOW LIMIT ≈ V REF ( 1+R1B/R2B)+V BE LOW LIMIT ≈ V REF ( 1+R1A/R2A) R1A R2A R2B R1B LOW LIMIT ≈ V REF ( 1+R1B/R2B)+V BE LED ON WHEN LOW LIMIT ≈ V REF ( 1+R1A/R2A) LOW LIMIT < V + < HIGH LIMIT Delay Timer Current Limiter or Current Source C R ONOFF DELAY = R*C* ln *V+/(V+)-V R EF R CL I O I O =V REF /R CL Constant Current Sink R S I O I O = V REF /R S

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS431 TYPICAL PERFORMANCE CHARACTERISTICS 100 200 300 400 500 0 1.0 2.0 3.0 Input Current vs V Z CATHODE VOLTAGE (V) INPUTT CURRENT ( µA) ΤΑ = 25°C V Z = V REF 25 70 85 1000 500 125 REFERENCE VOLTAGE (V) Thermal Information TEMPERATURE (° C) 100 0 100 150 0 1.0 2.0 3.0 Input Current vs V Z CATHODE VOLTAGE (V) INPUTT CURRENT ( mA) ΤΑ = 25°C V Z = V REF SOT-89 SOT-23 SO-8TO-92 I Z MIN PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3L TO-92 PLASTIC PACKAGE (N) 0.140±0.010 (3.556±0.127) 0.060±0.010 (1.524±0.254) 0.015±0.002 (1.270±0.127) 0.060±0.005 (1.524±0.127) DIA 0.180±0.005 (4.572±0.127) 0.180±0.005 (4.572±0.127) 0.050 (1.270) MAX 0.500 (12.70) MIN UNCONTROLLED LEAD DIMENSIONS 10° NOM5° NOM N (TO-92 ) AMS DRW# 042391 0.90 (2.286) NOM

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS431 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).

8 LEAD SOIC PLASTIC PACKAGE (S)

SOT-89 PLASTIC PACKAGE (L) 0°-8° TYP 0.010-0.020 (0.254-0.508) S (SO-8 ) AMS DRW# 042293 x 45° 0.016-0.050 (0.406-1.270) 0.008-0.010 (0.203-0.254) 0.004-0.010 (0.101-0.254) 0.014-0.019 (0.355-0.483) 0.053-0.069 (1.346-1.752) 0.050 (1.270) TYP 0.150-0.157** (3.810-3.988) 0.228-0.244 (5.791-6.197) 0.189-0.197* (4.801-5.004) *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 1 2 3 4 8 7 6 5 0.090-0.102 (2.29-2.60) 0.173-0.181 (4.40-4.60) 0.064-0.072 (1.62-1.83) 0.155-0.167 (3.94-4.25) 0.059 (1.50) BSC 0.035-0.047 (0.89-1.20) L (SOT-89 ) AMS DRW# 042392 0.118 (3.00) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56) 0.084-0.090 (2.13-2.29) 0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44)

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS431 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).

3 LEAD SOT-23 PLASTIC PACKAGE (M)

0.047-0.055 (1.194-1.397) 0.015-0.017 (0.381-0.432) 0.110-0.120 (2.794-3.048) 0.083-0.098 (2.108-2.489) 0.035-0.040 (0.889-1.016) 0.070-0.080 (0.457-0.610) 10° NOM 0.0034-0.0050 (0.086-0.127) (SOT-23 ) AMS DRW# 051991 0.035-0.041 (0.089-1.041) 0.0005-0.0040 (0.013-0.102) 0.018-0.024 (0.457-0.610) 10° NOM