Analog Microelectronics AME385BEHA, AME385BEET, AME385BEAT, AME385BEAS, AME385DEHA Datasheet
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Analog Microelectronics, Inc.
AME385-2.5
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n General Description
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The AME385-2.5 is a micropower 2-terminal band-gap
voltage regulator diode. It operates over a 20µA 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.
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n Applications
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l Portable electronics
l Power supplies
l Computer peripherals
l Data acquisition systems
l Battery chargers
l Consumer electronics
Micropower Voltage Reference Diode
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n Key Features
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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 ---------- 20µA to 20mA
l Wide temperature range -------- -40
l Low temperature coefficient --- 100ppm/
l Excellent transient response
o
C to +85oC
o
C (max)
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n Functional Block Diagram
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VR
Bandgap
Cell
GND
1
Current
Shunt
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n Typical Application
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VS
RS
VR
1000pF
Value optional
RS =
VS - VR
I
VR = 2.5V
I
Analog Microelectronics, Inc.
AME385-2.5
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n Package Outline
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SOT-23 Top View TO-92-3 Bottom View TO-92-2 Bottom View
NC *
+-
SO-8 Top View
1
NC
NC
2
3
NC
4
-
* The NC pin must float or be connected to - (negative)
8
7
6
5
+
NC
NC
NC
NC *
Micropower V oltage Reference Diode
-
+
+-
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n Ordering Information
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Part Numb er Accuracy Marking Packag e Operating Temp. Rang e
AME385DEET 0.2% ACSww SOT-23
O
C to +85OC
-40
AME
AME 385DE HA 0.2%
385D EHA
SO-8
O
C to +85OC
-40
yyww
AME385BEET 0.5% ABYww SOT-23
O
-4 0
C to +85OC
AME
AME385BEAT 0.5%
385
BEAT
TO-92-3
O
C to +85OC
-40
yyww
AME
AME385BEAS 0.5%
385
BEAS
TO-92-2
O
C to +85OC
-40
yyww
AME
AME385BEHA 0.5%
385BEHA
SO-8
O
C to +85OC
-40
yyww
Please c onsult AME sales offic e or authoriz ed Rep./Distributor for other voltage accurac y and
package type availability.
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Analog Microelectronics, Inc.
AME385-2.5
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n Absolute Maximum Ratings
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Parameter Maximum Unit
Supply Current 50 mA
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n Recommended Operating Conditions
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Parameter Rating Unit
Supply Current 100µA ~ 20m A
Am bient Tem perature Range -40 to +85
Junction Temperature -40 to +125
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n Thermal Information
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Micropower Voltage Reference Diode
o
C
o
C
Parameter
SO T-23 325
Thermal Resistance
M axim um Junc tion Tem perature 150
Max imum Lead Temperature ( 10 Sec) 300
Caution: Stress above the listed absolute rating may cause permanent damage to the device
TO -9 2 18 0
SO-8 125
Maximum Unit
o
C / W
o
C
o
C
3
Analog Microelectronics, Inc.
AME385-2.5
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Electrical Specifications
Micropower V oltage Reference Diode
Un le s s o the rwise s p e cif ie d , T A = 0~70oC, I = 100µA
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
Reference Voltage, ±0.2% 2.495 2.50 2.505 V
I
100µAV
=
REF
Reference Voltage, ±0.5% 2.487 2.50 2.513 V
Minimum Current I
Reference Voltage Change With
Current
Maximum Operation Current ILmax 20 mA
Reverse Dynami c Impedence RDI IR= 100mA, f= 20Hz 1.5 Ohm
dV
MIN
REF/I
REF
I
< I < 1mA 1. 5 3
MIN
1mA <
I < 20mA 5 20
20
µ
mV
A
Wi deband Noise (rms) Vn IR= 100mA, 10 Hz<f< 10KHz 60
o
Long term S tabil ity
Reference Voltage Temp. Coeff. V
REFTC
IR= 100mA, TA=25
T=1000 Hours
0oC < TA < 70oC100
C,
20 ppm
µ
ppm/
V
o
C
4
Analog Microelectronics, Inc.
AME385-2.5
Normalized Percentage Change vs.
0.1
0
-0.1
OUT
-0.2
-0.3
-0.4
% Change of V
-0.5
-0.6
-50 0 50 100 150
100µA
Temperature
I = 100µA
( OC)
Reverse Characteristic
Micropower Voltage Reference Diode
Output Voltage Change vs. Current
4
2
(mV)
0
-2
0.0
Forward Characteristic
1.0V
1 100
(mA)
I
R
10µA
85oC
1µA
100nA
0.0V 0.65V 1.3V
V
25oC
R
Transient Response
5V/DIV
V
IN
1V/DIV
VR
25
0.125V/DIV
0.0V
1µA
o
C
25oC
85oC
100µA 10mA
200µS/DIV
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Analog Microelectronics, Inc.
AME385-2.5
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n Package Dimension
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SOT-23
Micropower V oltage Reference Diode
SYMBOLS
A 1.0 0 1.40 0 .0394 0 .0551
A
1
b 0.3 5 0.50 0 .0138 0 .0197
C 0.0 9 0.25 0 .0035 0 .0098
D 2.7 0 3.10 0 .1063 0 .1220
E 1.40 1 .80 0.0 551 0.0 709
e
H 2.6 0 3.00 0 .1024 0 .1181
L 0.3 5 0.55 0 .0138 0 .0197
θ1
θ1 0
θ1θ1
R
MILLIMETERS INCHES
MIN MAX MIN MAX
0.00 0.15 0.0000 0.0059
1.90 BSC 0.0748 B SC
o
o
9
o
0
o
9
0.95(TYP) 0.0374(TYP)
SO-8
SYM BO LS
A 1.35 1.75 0.053 0.069
A
1
A2
B 0.33 0.51 0.013 0.020
θ
C 0.19 0.25 0.007 0.010
D 4.80 5.00 0.189 0.1970
E 3.80 4.00 0.150 0.157
e
H 5.80 6.20 0.228 0.244
L 0.40 1.27 0.016 0.050
y 0.10 0 .004
θθθθ 0
MILLIMETERS INCHES
MIN MAX MIN MAX
0.10 0.25 0.004 0.010
1.45 REF 0.057 REF
1.27 BSC 0.050 BSC
o
o
8
o
0
8
o
6
Analog Microelectronics, Inc.
AME385-2.5
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n Package Dimension
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TO-92-3
Micropower Voltage Reference Diode
SYMBOLS
A 4.32 4.95 0.170 0.195
b 0.36 0.51 0.014 0.020
E 3.30 3.94 0.130 0.155
e 2.41 2.67 0.095 0.105
e1 1.14 1.40 0.045 0.055
L 12.70 15.49 0.500 0.610
R 2.16 2.41 0.085 0.095
S1 1.14 1.52 0.045 0.060
W 0.41 0.56 0.016 0.022
D 4.45 4.95 0.175 0.195
a
NOTE:
1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES
DIMENSION
2. P ACKAGE OUTLI NE EXCLUS I VE OF BURR DIMENS IO N
MILLIMETERS INCHES
MIN MA X MIN MAX
°
4
°
6
°
4
°
6
TO-92-2
SYMBOLS
A 4.32 4.95 0.170 0.195
b 0.36 0.51 0.014 0.020
E 3.30 3.94 0.130 0.155
e 2.41 2.67 0.095 0.105
e1 1.14 1.40 0.045 0.055
L 12.70 15.49 0.500 0.610
R 2.16 2.41 0.085 0.095
S1 1.14 1.52 0.045 0.060
W 0.41 0.56 0.016 0.022
D 4.45 4.95 0.175 0.195
a
NOTE:
1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES
DIMENSION
2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION
MILLIMETERS INCHES
MIN MAX MIN MAX
°
4
°
6
°
4
°
6
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 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.
Analog Microelectronics, Inc. , October 2001
Document: 2003-DS385-2.5-D
Corporate Headquarters Asia Pacific Headquarters
Analog Microelectronics, Inc. AME, Inc.
3100 De La Cruz Blvd. Suite 201 2F, 187 Kang-Chien Road, Nei-Hu District
Santa Clara, CA. 95054-2046 Taipei 114, Taiwan, R.O.C.
Tel : (408) 988-2388 Tel : 886 2 2627-8687
Fax: (408) 988-2489 Fax : 886 2 2659-2989
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