CL1431 CALOGIC | Alldatasheet

Document overview

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Technical content

FEATURES

  • • Temperature-Compensated: 30ppm/oC
  • • Trimmed 0.4% Bandgap Reference
  • • Internal Amplifier with 150mA Capability
  • • Temperature Range: Extended to -55 to 125oC
  • • Low Frequency Dynamic Output Impedance: < 150m
  • • Low Output Noise
  • • Robust ESD Protection

DESCRIPTION

ORDERING INFORMATION

Part Package Temperature Range CL1431LP TO-92 -55 to 125 oC CL1431D 8-Pin Plas tic SOIC -55 to 125oC CL1431S SOT-89 -55 to 125 oC CORPORATION CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CATHODE ANODE REFERENCE TO-92 (LP) 1G-33 SOIC (D) REFERENCE ANODE ANODE N/C CATHODE ANODE ANODE N/C 1G-34 1G-35 CATHODE ANODE REFERENCE SOT-89 (S) PIN CONFIGURATION (Top View) The CL1431 is an adjustable shunt regulator designed to act as an open-loop error amplifier with a 2.5V temperature compensated reference. Its highly accurate 0.4% bandgap reference is perfect for applications requiring stability and accuracy over temperature and life. Sharp turn-on characteristics and a low temperature coefficient make the CL1431 an excellent replacement for many zener diode applications, programmable to any value greater than 2.5V and up to 36V by using two external resistors. As a combination error amplifier and reference, it can be used to manage control loops such as switching power supplies. The CL1431 can be used as a direct replacement for the standard TL431.

SYMBOL PARAMETER RATING UNITS VKA Cathode-Anode Reverse Breakdown 37 V IAK Anode-Cathode Forward Current 1 A IKA Operating Cathode Current 250 mA IREF Reference Input Current 10 mA PD Continuous Power Dissipation at 25oC TO-92 8L SOIC SOT-89 775 750 1000 mW mW mW TJ Junction Temperature 150 oC TSTG Storage Temperature –65 to 150 oC TL Lead Temperature, Soldering 10 Seconds 300 oC Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. RECOMMENDED CONDITIONS SYMBOL PARAMETER RATING UNIT VKA Cathode Voltage V REF to 36 V IK Cathode Current 10 mA TYPICAL THERMAL RESISTANCES PACKAGE θJA θJC TYPICAL DERATING TO-92 160 oC/W 80 oC/W 6.3mW/ oC SOIC 175 oC/W 45 oC/W 5.7mW/ oC SOT-89 110 oC/W 8 oC/W 9.1mW/ oC CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 1G-36ANODE (A) CATHODE (K) 2.5V REFERENCE (R) + FUNCTIONAL BLOCK DIAGRAM CORPORATION

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

ELECTRICAL CHARACTERISTICS

Electrical characteristics are guaranteed over full junction temperature range (-55 to 125oC). Ambient temperature must be derated based on power dissipation and package thermal characteristics. The conditions are: VKA = VREF and IK = 10mA unless otherwise stated. SYMBOL PARAMETER MIN TYP MAX UNIT CIRCUIT TEST CONDITION VREF Reference Voltage 2.490 2.500 2.510 V 1 T A = 25oC 2.470 2.530 V 1 Over Temp. TC V REF with Temp.* 0.06 0.16 mV/ oC1 V REF Ratio of Change in VREF to Cathode Voltage -2 -1.1 mV/V 2 V K = 3V to 36V IREF Reference Input Current 0.7 1.9 µA2 R 1 = 10k; R2 = I REF IREF Temp Deviation 0.4 1.2 µA 2 Over Temp. IK(MIN) Min IK for Regulation 0.4 1 mA 1 IK(OFF) Off State Leakage 0.04 250 nA 3 V REF = 0V, VKA = 36V ZKA Dynamic Output Impedance 0.15 0.2 Ω 1f ≤ 1kHz, IK = 1 to 100mA –55 TEMPERATURE (˚C) 0.06 mV/˚C 0.002 %/˚C 24 ppm/˚C 0.55000 000 mV ppm –10 1J-24 –25 0 25 50 75 100 125 –20 ΔT ΔV REF

  • TC in mV/oC = ΔVREF (mV ) ΔTA
  • TC in %/oC = ΔVREF VREF at 25oC x 100 ΔTA
  • TC in ppm/oC = ΔVREF VREF at 25oC x 106 ΔTA *CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC) TEST CIRCUITS INV KAV KI 1G-38 REFI REF= V REFI INV KAV REF(V ) KI 1G-39 INV KAV K(OFF)I 1G-40 TEST CIRCUIT 1 TEST CIRCUIT 2 TEST CIRCUIT 3 CORPORATION

TYPICAL PERFORMANCE CURVES CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 100 0.01 –60 1G-43 OFF STATE LEAKAGE –30 0 3 06 09 0 1 2 0 0.1 CURRENT (nA) VKA = 36V VREF = 0V – AMBIENT TEMPERATURE (˚C)TA – OFF STATE CATHODEIZ off 150 –100 –2 3 1G-42 HIGH CURRENT OPERATING CHARACTERISTICS –25 –50 –75 125 100 210–1 – CATHODE VOLTAGE (V)VKA TEMPERATURE RANGE: –55 to 125˚C VKA = VREF – CATHODE CURRENT (mA)IK 2.53 2.45 –60 1J-25 REFERENCE VOLTAGE vs AMBIENT TEMPERATURE –30 2.46 2.47 2.48 2.49 2.50 2.51 2.52 0 3 06 09 0 1 2 0 VREF – REFERENCE VOLTAGE (V) VKA = VREF IK = 10mA VREF = 2.500V AT 25˚C – AMBIENT TEMPERATURE (˚C)TA VKA – CATHODE VOLTAGE (V) – CATHODE CURRENT ( µA)IK 900 –200 –1.0 3.0 1G-41 LOW CURRENT OPERATING CHARACTERISTICS 1.00 2.0 –100 800 700 600 500 400 300 200 100 125˚C –55˚C 25˚C V= V REFKA TEMPERATURE RANGE: –55 to 125˚C –50 03 0 1G-46 REFERENCE VOLTAGE LINE REGULATION 3 6 9 12 15 18 21 24 27 –10 –20 –30 –40 VOLTAGE (mV) – CHANGE IN REFERENCEVREF – CATHODE VOLTAGE (V)VKA IK = 10mA TEMPERATURE RANGE: –55 to 125˚C –55˚C 0˚C 25˚C 75˚C 125˚C 3.0 –60 1G-45 REFERENCE INPUT CURRENT –30 0 3 06 09 0 1 2 0 2.5 2.0 1.5 1.0 0.5 CURRENT ( µA) – REFERENCE INPUTIREF TA – AMBIENT TEMPERATURE (˚C) R1 = 10kΩ R2 = ∞ IK = 10mA CORPORATION

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 TYPICAL PERFORMANCE CURVES (continued) 1G-47 NOISE VOLTAGE 100k f – FREQUENCY (Hz) 10k1k100 NOISE VOLTAGE nV/ Hz VKA = VREF = 10mA TA = 25˚C IK 0.150 0.0 –60 1G-48 LOW FREQUENCY DYNAMIC OUTPUT IMPEDANCE –30 0 3 06 09 0 1 2 0 0.125 0.100 0.075 0.050 0.025 – DYNAMIC IMPEDANCE ( Ω )Z KA VKA = VREF = 1 TO 100mA f ≤ 1kHz IKA – FREE AIR TEMPERATURETA 100 0.01 1G-49 DYNAMIC OUTPUT IMPEDANCE 10M f – FREQUENCY (Hz) 1M100k10k 1.0 0.1 – DYNAMIC IMPEDANCE ( Ω )ZKA TA = 25˚C = 1 TO 100mAIK 1J-26 SMALL SIGNAL GAIN vs FREQUENCY 10M f – FREQUENCY (Hz) 1M100k10k GAIN (dB) – SMALL SIGNAL VOLTAGEA V IK = 10mA TEMPERATURE RANGE: –55 to 125˚C 1H-01 KI 230Ω GND OUT 15k 8.25k 9µF CORPORATION

TA = 25˚C A C D – CATHODE CURRENT (mA)IK B A: VKA = VREF B: VKA = 5V AT IK = 10mA C: VKA = 10V AT IK = 10mA D: VKA = 15V AT IK = 10mA STABILITY REGION – LOAD CAPACITANCE (pF)C L 1H-02 PULSE RESPONSE t – TIME (µs) INPUT AND OUTPUT VOLTAGES (V) 12123456789 1 0 1 1 INPUT OUTPUT 1H-03 GND OUT 220ΩINPUT MONITOR 50Ω fP = 100kHz 1H-05 KI LC 150Ω 10k TYPICAL PERFORMANCE CURVES (continued) CORPORATION Information furnished by Calogic is believed to be accurate and reliable. However, no responsibility is assumed for its use: nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Calogic. CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025