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| Analog Microelectronics, Inc. AME385-1.2 Micropower Voltage Reference Diode n General Description The AME385-1.2 is a micropower 2-terminal band-gap voltage regulator diode. It operates over a 15A to 20mA current range. Each circuit is trimmed at wafer sort to provide a 0.2% and 0.5% initial tolerance. The design of the AME385-1.2 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 packages 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 1.235V l Tight voltage tolerance ---------- 0.20%, 0.5% l Wide operating current ---------- 15A 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 B andgap Cell Feedbac k Current S hunt VR V R = 1.235V GND 1000pF V alue optional I RS = VS - VR I 1 Analog Microelectronics, Inc. AME385-1.2 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 Part N umber A ME385CE ET Accuracy 0.2% Marking A CQww A ME 385CEHA yyww A ME 385 A EA S yyww A ME 385 A EA T yyww A BXww A ME 385A EHA yyww Package Operating Temp. R ange S OT-23 -40 O C to +85 O C A ME385CE HA 0.2% S O-8 -40 O C to +85 O C A M E385A E AS 0.5% TO-92-2 -40 O C to +85 O C A M E385A E AT 0.5% TO-92-3 -40 O C to +85 O C A M E385A E ET 0.5% S OT-23 -40 O C to +85 O C A M E385A E HA 0.5% S O-8 -40 O C to +85 O C Please consult AME sales office or authorized Rep./Distributor for other voltage accuracy and package type availability. 2 Analog Microelectronics, Inc. AME385-1.2 Micropower Voltage Reference Diode n Absolute Maximum Ratings Parame te r Supply Current Maximum 50 Unit mA n Recommended Operating Conditions Parameter Supply Current Ambient Temperature Range Junction Temperature Rating 100A ~ 20mA -40 to +85 -40 to +125 o Unit C C o n Thermal Information P a ra m e te r S O T-2 3 Th e rm a l R e s is t a n c e TO -9 2 S O -8 M ax im u m Jun c t io n Te m p era t u re M ax im u m L e a d Te m p e ra tu re ( 1 0 S e c ) M a x im u m 325 180 125 150 300 o o Un it C/W C C o Caution: Stress above the listed absolute rating may cause permanent damage to the device 3 Analog Microelectronics, Inc. AME385-1.2 Micropower Voltage Reference Diode n Electrical Specifications Unless otherwise specified, TA = 0 ~70 o C, I R = 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= 100A, f=20Hz IR= 100A, 10 Hz TEST CONDITIONS IREF = 100A MIN 1.232 1.229 TYP 1.235 1.235 MAX 1.238 1.241 15 3 UNITS V V A mV 4 Analog Microelectronics, Inc. AME385-1.2 Normalized Percentage Change vs. Temperature 0.1 0 2 Micropower Voltage Reference Diode Output Voltage Change vs. Current % Change of VOUT -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -50 -1 0 I = 100A (mV) 1 0 50 100 150 0.0 1 (mA) 100 ( C) O Reverse Characteristic 100A 1.0V Forward Characteristic 10A 25oC 85oC 0.125V/DIV 85oC 25oC IR 1A 100nA 0.0V 0.65V 1.3V 0.0V 1A 100A 10mA VR Transient Response 25 C o 5V/DIV VIN VR 0.5V/DIV 200S/DIV 5 Analog Microelectronics, Inc. AME385-1.2 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 0.95(TYP) 3.00 0.55 9o 0.0748 BSC 0.1024 0.0138 0o 0.1181 0.0197 9o 0.0374(TYP) SO-8 SYMBOLS A A1 A2 B C 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 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. AME385-1.2 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 iii 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 life-support 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-DS385-1.2-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 Dist., Taipei 114, Taiwan, R.O.C. Tel : 886 2 2627-8687 Fax: 886 2 2659-2989 |
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