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| Analog Microelectronics, Inc. AME385-2.5 Micropower Voltage Reference Diode n General Description The AME385-2.5 is a micropower 2-terminal band-gap voltage regulator diode. It operates over a 20A to 20mA current range. Each circuit is trimmed at wafer sort to provide a 0.20% and 0.50% initial tolerance. The design of the AME385-2.5 allows for a large range of load capacitances and operating currents. The low start-up current makes these part ideal for battery applications. Analog Microelectronics offers this part in a TO-92 and SO-8 package as well as the space saving SOT-23. n Key Features l Small packages: SOT-23, TO-92, SO-8 l Tolerates capacitive loads l Fixed reverse breakdown voltage of 2.5V l Tight voltage tolerance ---------- 0.20%, 0.50% l Wide operating current ---------- 20A to 20mA l Wide temperature range -------- -40oC to +85oC l Low temperature coefficient --- 100ppm/oC (max) l Excellent transient response n Applications l l l l l l Portable electronics Power supplies Computer peripherals Data acquisition systems Battery chargers Consumer electronics n Functional Block Diagram VR n Typical Application VS RS VR B andgap Cell Current S hunt 1000pF V alue optional I V R = 2.5V GND RS = VS - VR I 1 Analog Microelectronics, Inc. AME385-2.5 Micropower Voltage Reference Diode n Package Outline SOT-23 Top View NC * TO-92-3 Bottom View TO-92-2 Bottom View NC * + - + - + - SO-8 Top View NC NC NC 1 2 3 4 8 7 6 5 + NC NC NC * The NC pin must float or be connected to - (negative) n Ordering Information P art N u m b er A M E 385D E E T Accu rac y 0.2% M arkin g A C S ww AME 385 D E HA yyww A B Yww AME 385 BEAT yyww AME 385 BEAS yyww AME 385 B E HA yyww P acka g e S OT-23 Op e ratin g T em p . R a n g e -40 C to +8 5 C O O A M E 385D E HA 0.2% S O-8 -40 C to +8 5 C O O O O A M E 385B E E T 0.5% S OT-23 -40 C to +8 5 C A M E 385B E A T 0.5% TO-9 2-3 -40 C to +8 5 C O O A M E 385B E A S 0.5% TO-9 2-2 -40 C to +8 5 C O O A M E 385B E HA 0.5% S O-8 -40 C to +8 5 C O O P leas e c ons ult AME s ales offic e or authoriz ed R ep./D is tributor for other voltage ac c urac y and pac kage type availability. 2 Analog Microelectronics, Inc. AME385-2.5 Micropower Voltage Reference Diode n Absolute Maximum Ratings P a ra m e te r S upply Current M a x im um 50 Unit mA n Recommended Operating Conditions P a ra m e te r S upply Current A m bient Tem perature Range Junction Tem perature Ra ting 100 A ~ 20m A -40 to + 85 -40 to + 125 o Unit C C o n Thermal Information P a ra m e te r S O T-23 Therm al R es is tanc e TO -92 S O -8 M ax im um Junc tion Tem perature M ax im um Lead Tem perature ( 10 S ec ) M a x im u m 325 180 125 150 300 o o U n it C/W C C o Caution: Stress above the listed absolute rating may cause permanent damage to the device 3 Analog Microelectronics, Inc. AME385-2.5 Micropower Voltage Reference Diode n Electrical Specifications Unless otherwise specified, TA = 0~70 o C, I = 100 A PARAMETER Reference Voltage, 0.2% VREF Reference Voltage, 0.5% Minimum Current Reference Voltage Change With Current Maximum Operation Current Reverse Dynamic Impedence Wideband Noise (rms) Long term Stability Reference Voltage Temp. Coeff. VREFTC IMIN IMIN < I < 1mA dVREF/I 1mA < I < 20mA ILmax RDI Vn IR= 100mA, f=20Hz IR= 100mA, 10 Hz TEST CONDITIONS IREF = 100A MIN 2.495 2.487 TYP 2.50 2.50 MAX 2.505 2.513 20 3 UNITS V V A mV 4 Analog Microelectronics, Inc. AME385-2.5 Normalized Percentage Change vs. Temperature 4 Micropower Voltage Reference Diode Output Voltage Change vs. Current 0.1 0 % Change of VOUT -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -50 -2 I = 100A (mV) 2 0 0 50 100 150 0 .0 1 (m A ) 100 ( C) O Reverse Characteristic 100A 1.0V Forward Characteristic 10A IR 1A 85oC 25oC 0.125V/DIV 25oC 85oC 100nA 0.0V 0.65V 1.3V 0.0V 1A 100A 10mA VR Transient Response 2 5 oC 5V/DIV V IN VR 1V/DIV 200S/DIV 5 Analog Microelectronics, Inc. AME385-2.5 Micropower Voltage Reference Diode n Package Dimension SOT-23 SYMBOLS A A1 b C D E e H L 1 R MILLIMETERS MIN 1.00 0.00 0.35 0.09 2.70 1.40 MAX 1.40 0.15 0.50 0.25 3.10 1.80 INCHES MIN 0.0394 0.0000 0.0138 0.0035 0.1063 0.0551 MAX 0.0551 0.0059 0.0197 0.0098 0.1220 0.0709 1.90 BSC 2.60 0.35 0o 3.00 0.55 9o 0.95(TYP) 0.0748 BSC 0.1024 0.0138 0o 0.1181 0.0197 9o 0.0374(TYP) SO-8 SYMBOLS A A1 A2 B MILLIMETERS MIN 1.35 0.10 MAX 1.75 0.25 MIN INCHES MAX 0.069 0.010 0.053 0.004 1.45 REF 0.33 0.19 4.80 3.80 0.51 0.25 5.00 4.00 0.057 REF 0.013 0.007 0.189 0.150 0.020 0.010 0.1970 0.157 C D E e H L y 1.27 BSC 5.80 0.40 6.20 1.27 0.10 0 o 0.050 BSC 0.228 0.016 0.244 0.050 0.004 0 o 8 o 8o 6 Analog Microelectronics, Inc. AME385-2.5 Micropower Voltage Reference Diode n Package Dimension TO-92-3 SYMBOLS A b E e e1 L R S1 W D a MILLIMETERS MIN MAX 4.32 0.36 3.30 2.41 1.14 12.70 2.16 1.14 0.41 4.45 4 4.95 0.51 3.94 2.67 1.40 15.49 2.41 1.52 0.56 4.95 6 INCHES MIN MAX 0.170 0.014 0.130 0.095 0.045 0.500 0.085 0.045 0.016 0.175 4 0.195 0.020 0.155 0.105 0.055 0.610 0.095 0.060 0.022 0.195 6 NOTE: 1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES DIMENSION 2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION TO-92-2 SYMBOLS A b E e e1 L R S1 W D a MILLIMETERS MIN MAX 4.32 0.36 3.30 2.41 1.14 12.70 2.16 1.14 0.41 4.45 4 INCHES MIN MAX 0.170 0.014 0.130 0.095 0.045 0.500 0.085 0.045 0.016 0.175 4 4.95 0.51 3.94 2.67 1.40 15.49 2.41 1.52 0.56 4.95 6 0.195 0.020 0.155 0.105 0.055 0.610 0.095 0.060 0.022 0.195 6 NOTE: 1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES DIMENSION 2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION 7 www.analogmicro.com E-Mail: info@analogmicro.com Life Support Policy: These products of Analog Microelectronics, Inc. are not authorized for use as critical components in lifesupport devices or systems, without the express written approval of the president of Analog Microelectronics, Inc. Analog Microelectronics, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) Analog Microelectronics, Inc. , October 2001 Document: 2003-DS385-2.5-D Corporate Headquarters Analog Microelectronics, Inc. 3100 De La Cruz Blvd. Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489 Asia Pacific Headquarters AME, Inc. 2F, 187 Kang-Chien Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel : 886 2 2627-8687 Fax : 886 2 2659-2989 |
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