SPX385-5.0 5V Micropower Voltage Reference N/C FEATURES Trimmed Bandgap .......................................... 1% SPX385 Wide Operating Current ............... 50A to 20mA 3 Pin SOT-23 Extended Temperature Range ... -40C to +85C Cathode Anode Dynamic Impedance .............................. 1 max Offered in Small SOT-23, TO-92, NSOIC, and 1 NC 8 Cathode SOT-89 NC 2 7 NC SPX385 Low Cost Solution NC NC 3 6 8 Pin nSOIC Anode 4 5 NC APPLICATIONS Battery Operated Equipment Now Available in Lead Free Packaging Adjustable Supplies Switching Power Supplies Monitors / VCR / TV Error Amplifiers Personal Computers Single Supply Amplifier Power use meter DESCRIPTION The SPX385-5.0 is a micropower 2-terminal band-gap voltage reference with a very wide operating current range from 50A to 20mA that provides a stable voltage. The SPX385-5.0 is available in SOT-23, TO-92, NSOIC, and SOT-89 packages with an operating temperature range of -40C to 85C. A 1.2 and 2.5 volt device are also available - SPX385-1.2, SPX385-2.5. BLOCK DIAGRAM Cathode (K) 1.5M + - 500k 1.25V Anode (A) Figure 1: Block Diagram Date: 2/11/06 SPX385-5.0 Micropower Voltage Reference Copyright 2005 Sipex Corporation 1ABSOLUTE MAXIMUM RATINGS 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. Reverse Current (I ) ............................................................. 30mA KA Forward Current (I ) ............................................................. 10mA AK Operating Temperature Range (T ) ............................ -40 to +85C A Junction Temperature (T ) ..................................................... 150C J Storage Temperature (T ) ....................................... - 65 to 150C STG Lead Temperature (Soldering 10 sec.), T ............................. 300C L ELECTRICAL CHARACTERISTICS I = 100A, T = 25C, unless otherwise specified. The denotes the specifications which apply over the full operating IN A temperature range. PARAMETER MIN. TYP. MAX UNIT CONDITIONS Reference Voltage 4.90 5.00 5.10 V 2% 4.95 5.00 5.05 1% Dynamic Output 0.6 1.0 F = 20Hz Impedance I = 100A R Reference Voltage 10 20 mV 20A I 20mA R Change with I . R Temperature Coefficient 30 50 ppm/C Note 1 Minimum Operating Current 30 50 A Output Wideband Noise 120 Vrms 10Hz f 10kHz Long Term Stability 60 ppm T=1000Hr T = 25C 0.1C A Operating Temperature -40 +85 C Note 1. Three-point measurement guarantees the error band over the specified temperature range. *CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC) mV ppm % 0 0 0 V (mV) V KA KA TCinmV/C= T A T V KA -10 x 100 ( ) VKAat25C TCin %/C= 5000 0.5 T A V KA 6 x10 V at25C ( KA ) TCinppm/C= 0 15 30 45 60 75 90 105 T A Junction Temperature (C) 0.07mV/C 0.003%/C 27ppm/C Figure 2. V vs. Temperature KA Date: 2/11/06 SPX385-5.0 Micropower Voltage Reference Copyright 2005 Sipex Corporation 2