AME, 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 15µA 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 capaci-
tances 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
Functional Block Diagram
VR
Bandgap
Cell
Feedback
Current
Shunt
n
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 ------- 15µA to 20mA
l
Wide temperature range ----- -40
o
C to +85
o
C
l
Low temperature coefficient --100ppm/ C
(max)
o
GND
n
Typical Application
VS
VS
RS
VR
l
Excellent transient response
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Applications
l
Portable electronics
l
Power supplies
l
Computer peripherals
l
Data acquisition systems
l
Battery chargers
l
Consumer electronics
VS - VR
RS =
I
0.1µ F
Value optional
VR = 1.235V
1
AME, Inc.
AME385-1.2
Micropower Voltage Reference Diode
n
Pin Configuration
SO-8
Top View
8
7
6
5
SOT-23
Top View
AME 385-1.2
1. NC
2. NC
3. NC
4.
-
1
2
3
AME 385-1.2
1.
2.
+
-
3. NC*
5. NC
6. NC
1
2
3
4
7. NC
8. +
TO-92-3
Bottom View
1
2
3
TO-92-2
Bottom View
AME 385-1.2
1. NC*
2.
3.
+
-
1
2
AME 385-1.2
1. +
2.
-
* The NC pin must float or be connected to - (negative)
2
AME, Inc.
AME385-1.2
Micropower Voltage Reference Diode
n
Ordering Information
AME385 x x x x x
Special Feature
Number of Pins
Package Type
Operating Temperature Range
Accuracy
Accuracy
Operating
Temperature Range
E: -40
O
C to 85
O
C
Package Type
Number of
Pins
Special Feature
C: 0.2%
A: 0.5%
A: TO-92
E: SOT-2X
H: SO-8
A: 8
S: 2
T: 3
L: Low Profile
Y: Lead Free & Low Profile
Z: Lead Free
3
AME, Inc.
AME385-1.2
Micropower Voltage Reference Diode
n
Ordering Information (contd.)
Part Number
AME385AEET
AME385AEETL
AME385AEETY
AME385AEETZ
AME385CEET
AME385CEETL
AME385CEETY
AME385CEETZ
Marking*
ABXww
ABXww
ABXww
ABXww
ACQww
ACQww
ACQww
ACQww
AME
385
AEAS
yyww
AME
385
AEAS
yyww
AME
385
AEAT
yyww
AME
385
AEAT
yyww
385
AEHA
yyww
385
AEHA
yyww
385
CEHA
yyww
385
CEHA
yyww
Accuracy
0.5%
0.5%
0.5%
0.5%
0.2%
0.2%
0.2%
0.2%
Package
SOT-23
TSOT-23
TSOT-23
SOT-23
SOT-23
TSOT-23
TSOT-23
SOT-23
Operating Temp. Range
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
AME385AEAS
0.5%
TO-92-2
AME385AEASZ
0.5%
TO-92-2
- 40
o
C to + 85
o
C
AME385AEAT
0.5%
TO-92-3
- 40
o
C to + 85
o
C
AME385AEATZ
0.5%
TO-92-3
- 40
o
C to + 85
o
C
AME385AEHA
0.5%
SO-8
- 40
o
C to + 85
o
C
AME385AEHAZ
0.5%
SO-8
- 40
o
C to + 85
o
C
AME385CEHA
0.2%
SO-8
- 40
o
C to + 85
o
C
AME385CEHAZ
0.2%
SO-8
- 40
o
C to + 85
o
C
* Package Option
Part Number
AME385XEAX
AME385XEAX-1
Package
TO-92 Taping
TO-92 Bulk
Lead Pitch
5.04mm
2.54mm
4
Note: yyww represents the date code
* A line on top of the first letter represents lead free plating such as ACQ.
Please consult AME sales office or authorized Rep./Distributor for the availability of voltage accuracy and package
type.
AME, Inc.
AME385-1.2
Micropower Voltage Reference Diode
n
Absolute Maximum Ratings
Parameter
Supply Current
Maximum
50
Unit
mA
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n
Recommended Operating Conditions
Parameter
Supply Current
Ambient Temperature Range
Junction Temperature
Rating
100µA ~ 20mA
- 40 to + 85
- 40 to + 125
Unit
o
C
C
o
n
Thermal Information
Parameter
SOT-23
Thermal Resistance
TO-92
SO-8
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
Maximum
325
180
125
150
300
Unit
o
C/W
o
C
C
o
5
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