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| 1.25VPrecision Adjustable Shunt Reference / Amplifier CORPORATION Preliminary Product Information CL432 FEATURES DESCRIPTION o * * * * * * Temperature-Compensated: 50ppm/ C Trimmed 0.5% Bandgap Reference Internal Amplifier with 150mA Capability Nominal Temperature Range Extended to 105oC Low Frequency Dynamic Output Impedance: < 150m Low Output Noise Calogic's CL432 is a 3-terminal Adjustable Shunt Regulator highly accurate 1.25V bandgap reference with a 0.5% tolerance. The device offers thermal stability, wide operating current (100mA) and an extended temperature range of 0o to 105oC for operation in power supply applications. The CL432 offers a wide operating voltage range of up to 18V and is an excellent choice for voltage reference requirements in an isolated feedback circuit for 3.0V to 3.3V switching mode power supplies. The tight tolerance guarantees a lower design cost for the power supply manufacturer by virtually eliminating the need for an extra power supply manufacturing process of the power supply. The device is housed in several package options to meet the designers criteria. ORDERING INFORMATION Part CL432LP CL432D CL432VS CL432S Package TO-92 8-Pin Plastic SOIC SOT-23 SOT-89 Temperature Range 0 to 105oC 0 to 105oC 0 to 105oC 0 to 105oC PIN CONFIGURATION (Top View) TO-92 (LP) CATHODE CATHODE ANODE ANODE ANODE REFERENCE 1G-33 SOIC (D) 1 2 3 4 8 7 6 5 REFERENCE ANODE ANODE N/C 1G-34 N/C SOT-23 (VS) CATHODE ANODE REFERENCE SOT-89 (S) CATHODE ANODE REFERENCE 1J-22 1G-35 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CL432 CORPORATION ABSOLUTE MAXIMUM RATINGS SYMBOL VKA IAK IKA IREF PD PARAMETER Cathode-Anode Reverse Breakdown Anode-Cathode Forward Current Operating Cathode Current Reference Input Current Continuous Power at 25 oC TO-92 8L SOIC SOT-23 SOT-89 Junction Temperature Storage Temperature Lead Temperature, Soldering 10 Seconds RATING 18 1 100 1 UNITS V A mA mA 775 750 1000 200 150 -65 to 150 300 mW mW mW mW o o o TJ TSTG TL C C C 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 VKA IK PARAMETER Cathode Voltage Cathode Current RATING VREF to 18 10 UNIT V mA TYPICAL THERMAL RESISTANCES PACKAGE TO-92 SOIC SOT-23 SOT-89 JA 160 oC/W 175 oC/W 575oC/W 110oC/W JC 80 oC/W 45 oC/W 150 oC/W 8oC/W TYPICAL DERATING 6.3mW/oC 5.7mW/oC 1.7mW/oC 9.1mW/oC FUNCTIONAL BLOCK DIAGRAM CATHODE (K) REFERENCE (R) + - + - 1.25V ANODE (A) 1J-23 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CL432 CORPORATION ELECTRICAL CHARACTERISTICS Electrical characteristics are guaranteed over full junction temperature range (0 to 105 oC). 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 VREF VREF VREF VREF IREF I REF IK(MIN) IK(MIN) PARAMETER Output Voltage Line Regulation Load Regulation Temperature Deviation Reference Input Current Reference Input Current Temperature Coefficient Min. Cathode Current for Regulation Off State Leakage MIN 1.244 TYP 1.250 10 3 2 3 0.3 0.6 0.04 MAX 1.256 15 6 6 6 0.6 1 500 UNIT V mV mV mV A A mA nA VREF = 0V, VKA = 18V 0 < TJ < 105 oC TEST CONDITION IK = 10mA, T J = 25oC, VK = VREF VK = 1.25 to 15V IK = 1 to 100mA 0 < TJ < 105 oC *Temperature deviation is defined as the maximum deviation of the reference over the given temperature range and does not imply an incremental deviation at any given temperature. TYPICAL PERFORMANCE CURVES (Not available at time of publishing) Calogic reserves the right to make changes without further notice to any products described herein to improve reliability, function, or design. Calogic does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights or the right of others. Calogic products are not authorized for use as components in life support devices or systems intended for surgical implant into the body or intended to support or sustain life. Buyer agrees to notify Calogic of any such intended end use whereupon Calogic will determine availability and suitability of its products for the intended use. Calogic and the Calogic logo are trademarks of Calogic. CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CL432 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 CL432 CORPORATION TYPICAL PERFORMANCE CURVES 900 I K - CATHODE CURRENT (A) 800 700 600 500 400 300 200 100 0 -100 LOW CURRENT OPERATING CHARACTERISTICS VKA = VREF TEMPERATURE RANGE: -55 to 125C 150 I K - CATHODE CURRENT (mA) 125 100 75 50 25 0 -25 -50 -75 HIGH CURRENT OPERATING CHARACTERISTICS VKA = VREF TEMPERATURE RANGE: -55 to 125C 125C 25C -55C -200 -1.0 0 1.0 2.0 3.0 VKA - CATHODE VOLTAGE (V) 1G-41 -100 -2 -1 0 1 2 VKA - CATHODE VOLTAGE (V) 3 1G-42 100 I Z off - OFF STATE CATHODE CURRENT (nA) OFF STATE LEAKAGE VREF = 0V VREF - REFERENCE VOLTAGE (V) VKA = 36V 2.54 TEMPERATURE COEFFICIENT AS A FUNCTION OF TRIM VALUE VKA = VREF 2.53 I K = 10mA 2.52 2.51 10 1 2.50 2.49 2.48 2.47 2.46 -60 -30 0 30 60 90 120 TA - AMBIENT TEMPERATURE VREF = 2.503V AT 25C 0.1 0.01 0 30 60 90 120 -60 -30 TA - AMBIENT TEMPERATURE (C) 1G-43 1G-44 3.0 I REF - REFERENCE INPUT CURRENT (A) REFERENCE INPUT CURRENT VREF - CHANGE IN REFERENCE VOLTAGE (mV) R1 = 10k R2 = 2.5 I K = 10mA 2.0 1.5 1.0 0.5 0 0 30 60 90 120 -60 -30 TA - AMBIENT TEMPERATURE (C) 0 REFERENCE VOLTAGE LINE REGULATION -10 -55C 0C -20 25C 75C 125C -30 -40 I K = 10mA -50 TEMPERATURE RANGE: -55 to 125C 0 1G-45 3 6 9 12 15 18 21 24 27 30 VKA - CATHODE VOLTAGE (V) 1G-46 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CL432 CORPORATION TYPICAL PERFORMANCE CURVES (continued) 70 NOISE VOLTAGE nV/ Hz 60 50 40 30 20 NOISE VOLTAGE Z KA - DYNAMIC IMPEDANCE () 0.150 0.125 0.100 0.075 0.050 0.025 LOW FREQUENCY DYNAMIC OUTPUT IMPEDANCE VKA = VREF I KA = 1 TO 100mA f 1kHz VKA = VREF 10 I K = 10mA TA = 25C 0 100 1k 10k 10 f - FREQUENCY (Hz) 100k 1G-47 0.0 -60 -30 0 30 60 90 120 TA - FREE AIR TEMPERATURE 1G-48 100 Z KA - DYNAMIC IMPEDANCE () DYNAMIC OUTPUT IMPEDANCE TA = 25C I K = 1 TO 100mA 10 1.0 0.1 0.01 1k 10k 100k 1M f - FREQUENCY (Hz) 10M 1G-49 70 A V - SMALL SIGNAL VOLTAGE GAIN (dB) 60 50 40 30 20 SMALL SIGNAL GAIN vs FREQUENCY OUT 15k 9F IK 230 TA = 25C I K = 10mA 8.25k GND 1H-01 10 0 1k 10k 100k 1M f - FREQUENCY (Hz) 10M 1G-50 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CL432 CORPORATION TYPICAL PERFORMANCE CURVES (continued) INPUT AND OUTPUT VOLTAGES (V) 6 5 4 3 2 1 0 -1 PULSE RESPONSE INPUT INPUT MONITOR 220 OUT OUTPUT f P = 100kHz 50 GND 1H-03 0 1 2 3 4 5 6 7 8 9 10 11 12 t - TIME (s) 1H-02 100 I K - CATHODE CURRENT (mA) 90 80 70 60 50 40 30 20 10 STABILITY BOUNDARY CONDITIONS A: VKA = VREF B: VKA = 5V AT I K = 10mA C: VKA = 10V AT I K = 10mA D: VKA = 15V AT I K = 10mA 150 IK STABILITY REGION C 10k CL A B TA = 25C D 1H-05 0 100 101 102 103 104 105 106 107 C L - LOAD CAPACITANCE (pF) 1H-04 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 |
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