AME
AME385-2.5
n
General Description
The AME385-2.5 is a micropower 2-terminal band-gap
voltage regulator diode. It operates over a 30µA to 20mA
current range. Each circuit is trimmed at wafer sort to
provide a ± 0.50% and ± 0.80% initial tolerance. The de-
sign of the AME385-2.5 allows for a large range of load
capacitances and operating currents. The low start-up cur-
rent makes these parts ideal for battery applications.
AME offers this part in a TO-92 and SOP-8 packages
as well as the space saving SOT-23.
Shunt Bandgap Voltage Reference
n
Functional Block Diagram
VR
Bandgap
Cell
Current
Shunt
n
Features
l
Small Packages: SOT-23, TO-92, SOP-8
l
Tolerates Capacitive Loads
l
Fixed Reverse Breakdown Voltage of 2.5V
l
Tight Voltage Tolerance -------
±0.50%, ±0.8%
l
Wide Operating Current ------- 30µA 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
l
Excellent Transient Response
l
All AME’ s Lead Free Products Meet RoHS
Standards
RS
VR
n
Applications
l
Portable Electronics
l
Power Supplies
l
Computer Peripherals
l
Data Acquisition Systems
l
Battery Chargers
l
Consumer Electronics
VS - VR
RS =
I
0.1µF
Value optional
VR = 2.5V
Rev.G.03
1
AME
AME385-2.5
n
Pin Configuration
SOP-8
Top View
8
7
6
5
Shunt Bandgap Voltage Reference
SOT-23
Top View
AME 385-2.5
1. NC
2. NC
3. NC
4.
-
* Die Attach:
1
2
3
AME 385-2.5
1. +
2.
-
AME385
AME385
3. NC*
5. NC
6. NC
1
2
3
4
Non-Conductive Epoxy
7. NC
8. +
* Die Attach:
Conductive Epoxy
TO-92-3
Top View
TO-92-2
Top View
AME 385-2.5
http://tw.club.yahoo.com/clubs/Tsao
1. NC*
2.
3.
+
-
* Die Attach:
* Die Attach:
Non-Conductive Epoxy
Non-Conductive Epoxy
AME 385-2.5
1. +
2.
-
AME385
AME385
1
2
3
1
2
* The NC pin must float or be connected to - (negative)
2
Rev.G.03
AME
AME385-2.5
n
Ordering Information
AME385 x x x x x - x
Special Feature2
Special Feature1
Number of Pins
Package Type
Operating Ambient Temperature Range
Accuracy
Shunt Bandgap Voltage Reference
Accuracy
Operating Ambient
Temperature
Range
E: -40
O
C to +85
O
C
Package
Type
Number
of
Pins
A: 8
S: 2
T: 3
Special
Feature1
Special Feature2
(For TO-92 Package Only)
Package Lead Pitch
N/A: Taping
5.08mm
1:
Bulk
2.54mm
B: 0.5%
(SOT-23)
(SOP-8)
A: TO-92
E: SOT-2X
H: SOP
Z: Lead Free
F: 0.8%
(TO-92-2)
(TO-92-3)
Rev.G.03
3
AME
AME385-2.5
n
Ordering Information (contd.)
Part Number
AME385BEET
AME385BEETZ
AME385BEHAZ
Shunt Bandgap Voltage Reference
Marking*
ABYww
ABYww
385
BEHA
yyww
AME
385
FEAT
yyww
AME
385
FEAT
yyww
AME
385
FEAS
yyww
AME
385
FEAS
yyww
Accuracy
0.5%
0.5%
0.5%
Package
SOT-23
SOT-23
SOP-8
Operating Ambient
Temperature Range
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
AME385FEATZ
0.8%
TO-92-3
- 40
o
C to +85
o
C
AME385FEATZ-1
0.8%
TO-92-3
- 40
o
C to +85
o
C
AME385FEASZ
0.8%
TO-92-2
- 40
o
C to +85
o
C
http://tw.club.yahoo.com/clubs/Tsao
0.8%
TO-92-2
- 40
o
C to +85
o
C
AME385FEASZ-1
Note: yyww & ww represents the date code and pls refer to Date Code Rule page on Package Dimension.
* A line on top of the first letter represents lead free plating such as ABY.
Please consult AME sales office or authorized Rep./Distributor for the availability of voltage accuracy and package
type.
4
Rev.G.03
AME
AME385-2.5
n
Absolute Maximum Ratings
Parameter
Supply Current
Shunt Bandgap Voltage Reference
Maximum
50
Unit
mA
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n
Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature Range
Storage Temperature Range
Supply Current
Symbol
T
A
T
J
T
STG
Rating
- 40 to +85
- 40 to +125
- 65 to +150
100µA ~ 20mA
Unit
o
C
C
C
o
o
n
Electrical Specifications
Unless otherwise specified, T
A
= 0 to 70
O
C, I = 100µA
Parameter
Reference Voltage,
±0.5%
Reference Voltage,
±0.8%
Minimum Current
Reference Voltage Change
With Current
Maximum Operation Current
Symbol
V
REF
I
MIN
dV
REF/I
I
MIN
< I < 1mA
1mA < I < 20mA
20
1.5
5
Test Condition
I
REF
= 100µA
Min
2.487
2.480
Typ
2.50
2.50
Max
2.513
2.520
30
3
mV
20
mA
Units
V
V
µA
ILmax
Reverse Dynamic Impedence
Wideband Noise (rms)
Long term Stability
Reference Voltage Temp.
Coeff.
RDI
Vn
IR= 100mA, f=20Hz
IR= 100mA, 10 Hz<f<10KHz
IR= 100mA, T
A
=25
o
C,
T=1000 Hours
1.5
60
20
Ohm
µV
ppm
V
REFTC
0
o
C < T
A
< 70
o
C
100
ppm/
o
C
Rev.G.03
5
嵌入式系统
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