1.25VPrecision Adjustable Shunt Reference / Amplifier CORPORATION Preliminary Product Information CL432A DESCRIPTION FEATURES • • • • • • o Temperature-Compensated: 50ppm/ C Trimmed 1% Bandgap Reference Internal Amplifier with 150mA Capability Nominal Temperature Range Extended to 105oC Low Frequency Dynamic Output Impedance: < 150m Low Output Noise Calogic’s CL432A is a 3-terminal Adjustable Shunt Regulator highly accurate 1.25V bandgap reference with a 1% 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 CL432A offers a wide operating voltage range of up to 10V 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 Package CL432ALP CL432AD CL432AVS CL432AS 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) SOIC (D) CATHODE CATHODE 1 8 REFERENCE ANODE 2 7 ANODE ANODE 3 6 ANODE N/C 4 5 N/C ANODE REFERENCE 1G-33 1G-34 SOT-89 (S) SOT-23 (VS) CATHODE ANODE CATHODE ANODE REFERENCE REFERENCE 1J-22 1G-35 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CL432A CORPORATION ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER RATING UNITS VKA Cathode-Anode Reverse Breakdown 10 V IAK Anode-Cathode Forward Current 1 A IKA Operating Cathode Current 100 mA IREF Reference Input Current 1 mA PD Continuous Power at 25 oC TO-92 8L SOIC SOT-23 SOT-89 775 750 1000 200 mW mW mW mW TJ Junction Temperature 150 o C TSTG Storage Temperature –65 to 150 o C 300 o C TL Lead Temperature, Soldering 10 Seconds 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 TYPICAL THERMAL RESISTANCES PARAMETER RATING UNIT PACKAGE θJA θJC TYPICAL DERATING VKA Cathode Voltage VREF to 10 V TO-92 160 oC/W 80 oC/W 6.3mW/oC IK Cathode Current 10 mA SOIC 175 oC/W 45 oC/W 5.7mW/oC SOT-23 575oC/W 150 oC/W 1.7mW/oC SOT-89 110oC/W 8oC/W 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 CL432A 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 PARAMETER MIN TYP MAX UNIT 1.237 1.250 1.263 V TEST CONDITION IK = 10mA, T J = 25oC, VK = VREF VREF Output Voltage VREF Line Regulation 10 15 mV VK = 1.25 to 10V VREF Load Regulation 3 6 mV IK = 1 to 100mA VREF Temperature Deviation 2 6 mV 0 < TJ < 105 oC IREF Reference Input Current 3 6 µA I REF Reference Input Current Temperature Coefficient 0.3 0.6 µA IK(MIN) Min. Cathode Current for Regulation 0.6 1 mA IK(MIN) Off State Leakage 0.04 500 nA 0 < TJ < 105 oC VREF = 0V, VKA = 10V *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) 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