TL430 ADJUSTABLE SHUNT REGULATORS SLVS050B – JUNE 1976 – REVISED JULY 1999 D D D D D Temperature Compensated Programmable Output Voltage Low Output Resistance Low Output Noise Sink Capability up to 100 mA LP PACKAGE (TOP VIEW) CATHODE ANODE description REF The TL430 is a 3-terminal adjustable shunt regulator, featuring excellent temperature stability, wide operating current range, and low output noise. The output voltage can be set by two external resistors to any desired value between 3 V and 30 V. The TL430 can replace zener diodes in many applications, providing improved performance. The TL430C is characterized for operation from 0°C to 70°C. symbol REF ANODE CATHODE AVAILABLE OPTIONS PACKAGED DEVICES TA PLASTIC (LP) 0°C to 70°C TL430CLP CHIP FORM (Y) TL430Y The LP package is available taped and reeled. Add R suffix to device type (e.g., TL430CLPR). Chip forms are tested at 25°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 TL430 ADJUSTABLE SHUNT REGULATORS SLVS050B – JUNE 1976 – REVISED JULY 1999 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Regulator voltage (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Continuous regulator current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA Package thermal impedance, θJA (see Notes 2 and 3): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to the anode terminal. 2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. 3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero. recommended operating conditions Regulator voltage, VZ Regulator current, IZ Operating free-air temperature range, TA TL430C MIN MAX UNIT Vref 2 30 V 100 mA 0 70 °C electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) TEST FIGURE PARAMETER TEST CONDITIONS VI(ref) Reference input voltage 1 αVI(ref) Temperature coefficient of reference input voltage VZ = VI(ref), VZ = VI(ref), TA = 0°C to 70°C IZ = 10 mA IZ = 10 mA, 1 II(ref) Reference input current 2 IZ = 10 mA, R2 = ∞ R1 = 10 kΩ, IZK Regulator current near lower knee of regulation range 1 VZ = VI(ref) IZK Regulator g current at maximum limit of regulation range 1 VZ = VI(ref) VZ = 5 V to 30 V, rz Differential regulator resistance (see Note 5) 1 VZ = VI(ref), ∆IZ = (52 – 2) mA Vn Noise voltage 2 f = 0.1 Hz to 10 Hz 2 TL430C MIN TYP MAX 2.5 2.75 3 120 3 10 µA 0.5 2 mA mA 100 1.5 VZ = 3 V VZ = 12 V V ppm/°C 50 See Note 4 UNIT 3 W 50 200 µV VZ = 30 V 650 NOTES: 4. The average power dissipation, VZ • IZ • duty cycle, must not exceed the maximum continuous rating in any 10-ms interval. 5. The regulator resistance for VZ > VI(ref), rz, is given by: rz 2 ǒ Ȁ + rz 1 ) R1 R2 Ǔ POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL430 ADJUSTABLE SHUNT REGULATORS SLVS050B – JUNE 1976 – REVISED JULY 1999 electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) TEST FIGURE PARAMETER VI(ref) Reference input voltage 1 II(ref) Reference input current 2 IZK Regulator current near lower knee of regulation range 1 VZ = VI(ref) IZK Regulator current at maximum limit of g regulation range 1 VZ = VI(ref) VZ = 5 V to 30 V, rz Differential regulator resistance (see Note 5) 1 VZ = VI(ref), . . . ∆IZ = (52 – 2) mA Vn Noise voltage 2 f = 0.1 Hz to 10 Hz 2 TL430Y TEST CONDITIONS VZ = VI(ref), IZ = 10 mA, R2 = ∞ IZ = 10 mA R1 = 10 kΩ, TYP MAX 2.5 2.75 3 V 3 10 µA 0.5 2 mA 50 See Note 4 UNIT MIN mA 100 1.5 VZ = 3 V VZ = 12 V 3 W 50 µV 200 VZ = 30 V 650 NOTES: 4. The average power dissipation, VZ • IZ • duty cycle, must not exceed the maximum continuous rating in any 10-ms interval. 5. The regulator resistance for VZ > VI(ref), rz, is given by: rz ǒ Ȁ + rz 1 ) R1 R2 Ǔ PARAMETER MEASUREMENT INFORMATION Input VZ IZ Input R1 VZ II(ref) TL430 IZ R2 VI(ref) TL430 VI(ref) V Figure 1. Test Circuit for VZ = VI(ref) POST OFFICE BOX 655303 Z + VI(ref) ǒ ) Ǔ) 1 R1 R2 I I(ref) R1 Figure 2. Test Circuit for VZ > VI(ref) • DALLAS, TEXAS 75265 3 TL430 ADJUSTABLE SHUNT REGULATORS SLVS050B – JUNE 1976 – REVISED JULY 1999 TYPICAL CHARACTERISTICS SMALL-SIGNAL REGULATOR IMPEDANCE vs FREQUENCY CATHODE CURRENT vs CATHODE VOLTAGE 160 VZ = VI(ref) TA = 25°C 2.8 VZ = VI(ref) TA = 25°C 140 2.6 I – Cathode Current – mA z z – Small-Signal Regulator Impedance – Ω 3 2.4 2.2 2 1.8 1.6 IZM 120 100 80 IZ 60 40 20 1.4 102 10 103 104 105 106 IZK 0 0 1 f – Frequency – Hz 2 3 4 V – Cathode Voltage – V Figure 3 Figure 4 APPLICATION INFORMATION V+ R V+ VO 30 Ω R1 4.7 kΩ VI(ref) R2 VO R1 R2 V O [ ǒ) Ǔ 1 R1 R2 V V I(ref) Figure 5. Shunt Regulator 4 POST OFFICE BOX 655303 O [ ǒ) Ǔ 1 R1 R2 V I(ref) Figure 6. Series Regulator • DALLAS, TEXAS 75265 TL430 ADJUSTABLE SHUNT REGULATORS SLVS050B – JUNE 1976 – REVISED JULY 1999 APPLICATION INFORMATION V+ µA7805 Regulator IN VO OUT GND RCL IO V+ R1 R2 I O [ ǒ Ǔ + 1 ) R1 V I(ref) R2 Min V + V ) 5V I(ref) O V V I(ref) R CL Figure 7. Current Limiter V+ O Figure 8. Output Control of a 3-Terminal Fixed Regulator VO V+ VO R1 R1 R2 Q1 R2 V O [ ǒ) Ǔ 1 R1 R2 V V I(ref) limit [ Figure 9. Higher-Current Applications ǒ ) Ǔǒ 1 R1 R2 V I(ref) ) VBE(Q1) Ǔ Figure 10. Crowbar VCC R1B R1A R2A R2B Low limit [ VI(ref) High limit [ VI(ref) ǒ ) Ǔ) ǒ) Ǔ 1 R1B R2B 1 R1A R2A VD Figure 11. VCC Monitor POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. 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