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GM431 Dataheets PDF



Part Number GM431
Manufacturers Gamma Microelectronics
Logo Gamma Microelectronics
Description 2.5V ADJUSTABLE SHUNT REGULATOR
Datasheet GM431 DatasheetGM431 Datasheet (PDF)

www.DataSheet4U.com MICROELECTRONICS A A Power Management GM431 2.5V ADJUSTABLE SHUNT REGULATOR Features Sink Current Capability 1 mA to 100mA Low dynamic output impedance, 0.2W typ. Low output noise 0.5%, 1% or 2% reference voltage tolerance Alternate for TL431, TL431, LM431 & AS431 Temperature range 0°C to+ 70 °C Available in SOT-23, TO-92, SOT-89 and SOP- 8 packages Description The GM431 is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. Out.

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www.DataSheet4U.com MICROELECTRONICS A A Power Management GM431 2.5V ADJUSTABLE SHUNT REGULATOR Features Sink Current Capability 1 mA to 100mA Low dynamic output impedance, 0.2W typ. Low output noise 0.5%, 1% or 2% reference voltage tolerance Alternate for TL431, TL431, LM431 & AS431 Temperature range 0°C to+ 70 °C Available in SOT-23, TO-92, SOT-89 and SOP- 8 packages Description The GM431 is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. Output voltage can be adjusted to any value between 2.5V (Vref) and 36V by using two external resistors. The GM431 has a typical dynamic output impedance of 0.2W. Active output circuitry provides a very unique turn on characteristic, making the GM431 an excellent replacement for zener diodes in many applications such as onboard regulation and adjustable power supplies. The GM431 is an ideal voltage reference for 3.0 to 3.3V switching power supplies. The GM431 shunt regulator is available with 3 voltage tolerances 0.5%, 1.0% and 2.0% over TA= 0°C to + 70°C, and four package options (SOT-23, TO-92, SOT-89 and SOP-8). Whatever your application is, the GM431 offers the optimum combination of performance, reliability, and economy. Application Switching power supplies Linear regulators Adjustable supplies Battery-operated computers Computer disk drives Instrumentation LOGIC SYMBOL BLOCK DIAGRAM (POSITIVE LOGIC) CATHODE REFERENCE _ ANODE CATHODE V ref ANODE www.gammamicro.com GM431 V0.11 1 REFERENCE + MICROELECTRONICS A A Power Management GM431 2.5V ADJUSTABLE SHUNT REGULATOR MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW) TO- 92 GM 431G AYWW 1. REF 2. Anode 3. Cathode 1 2 3 SOT-23 Anode 3 SOP- 8 ANODE REF ANODE NC SOT - 89 8 7 6 5 XXXYW 1 2 GM431G AYWW 1 2 3 4 CATHODE ANODE NC ANODE REF 1 GM431G AYWW 2 3 CATHODE REF Cathode ANODE XXX = Marking Code G** = Grade A = Assembly Location Y = Year WW, W= Weekly ORDERING INFORMATION Ordering Number GM431AT92B GM431AT92RL GM431AST23R GM431AS8T GM431AS8R GM431AST89R GM431BT92B GM431BT92RL GM431BST23R GM431BS8T GM431BS8R GM431BST89R GM431CT92B GM431CT92RL GM431CST23R Precision 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 1% 1% 1% 1% 1% 1% 2% 2% 2% 2% 2% 2% Device code Grade A A Package TO-92 TO-92 SOT-23 Shipping 1,000 Units/ ESD Bag 2,000 Units/ Ammo Pack(Tape) 3,000 Units / Tape &Reel 100 Units / Tube 2,500 Units / Tape & Reel 1,000 Units / Tape & Reel 1,000 Units/ ESD Bag 2,000 Units/ Ammo Pack(Tape) 3,000 Units / Tape &Reel 100 Units / Tube 2,500 Units / Tape & Reel 1,000 Units / Tape & Reel 1,000 Units/ ESD Bag 2,000 Units/ Ammo Pack(Tape) 3,000 Units / Tape &Reel 100 Units / Tube 2,500 Units / Tape & Reel 1,000 Units / Tape & Reel AAA A A A B B AAB SOP-8 SOP-8 SOT-89 TO-92 TO-92 SOT-23 B B B C C AAC SOP-8 SOP-8 SOT-89 TO-92 TO-92 SOT-23 GM431 GM431CS8T GM431CS8R GM431CST89R C C C SOP-8 SOP-8 SOT-89 * For detail Ordering Number identification, please see last page. **Grade A: indicates Precision of 0.5%, B: indicates Precision of 1%, C: indicates Precision of 2% 2 MICROELECTRONICS A A Power Management GM431 2.5V ADJUSTABLE SHUNT REGULATOR EQUIVALENT SCHEMATIC CATHODE 800W 800W 20pF REF 150W 3.28KW 4KW 10kW 2.4KW 7.2KW 20pF 1kW 800W ANODE * All component values are nominal. Pin numbers shown are for the D package. GM431 3 MICROELECTRONICS A A Power Management GM431 2.5V ADJUSTABLE SHUNT REGULATOR ABSOLUTE MAXIMUM RATINGS (over free-air temperature range except as noted) PARAMETER Cathode Voltage (1) Continuous cathode current range Reference input current range Power dissipation at TA = 25°C SOT-23 SOP-8 TO-92 SOT-89 Package thermal impedance SOT-23 TO-92 SOP-8 SOT-89 (2, 3) SYMBOL VKA IK Iref Value 37 -100 to 150 -50µA to 10mA 0.23 0.60 0.78 0.80 336 132 163 132 0 to + 70 260 UNIT V mA mA PD W qJA °C/W Operating ambient temperature range Lead temperature (soldering) 10 seconds TA TLEAD °C °C These are stress ratings only. Functional operation of the device at these or any conditions beyond the "recommended operating conditions" is not implied. Exposure to absolute maximum rated conditions may affect device reliability. NOTES: 1. Voltage values are with respect to the anode except as noted. 2. Maximum power dissipation is a function of TJ(max), qJA and TA. Maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) - TA)/ qJA. 3. Package thermal impedance is calculated per JESD 51. RECOMMENDED OPERATING CONDITIONS PARAMETER Cathode Voltage Cathode Current SYMBOL VKA IK MINIMUM Vref 1.0 MAXIMUM 36 100 UNIT V mA GM431 4 MICROELECTRONICS A A Power Management GM431 2.5V ADJUSTABLE SHUNT REGULATOR ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) GM431A (0.5%) PARAMETER Reference Voltage Vref temp deviation Ratio of change in Vref to change in VKA Reference input current Deviation of reference input current over full temperature range Minimum operating current Off-state cathode .


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