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AME, Inc.
AME4311
Low Voltage Shunt Regulator
n General Description
The AME4311 is a low volatge version of the industry standard 431 shunt regulator. The AME4311 reference is set to 1.24 volts. The output voltage can be set to any value between 1.24V and 8V with two external resistors. (For factory set internal feedback resistors see the AME4312.) When used with an optocoupler these devices are ideal for isolated 3.3V switching supplies. Analog Microelectronics offers this part in a TO-92 package as well as the space saving SOT-23 and SOT-25 packages. For isolated switching power supplies requiring voltages lower than 2.7V see the AME4315.
n Functional Block Diagram
V+
REF
VR=1.24
n Features
l l l l l Small packages: SOT-23, SOT-25, TO-92 Low voltage operation, 1.24V Tight voltage tolerance --- 0.5%,1.0%, 1.5% Wide operating current ------- 80A to 15mA Wide temperature range ----- -40oC to +85oC
GND
n Pin Configuration
SOT-23 Top View
GND
l Low temperature coefficient --100ppm/oC(max) l Excellent transient response
SOT-25 Top View
GND REF
n Applications
l l l l l l l Battery Operating Equipments Adjustable Supplies Switching Power Supplies Error Amplifiers Single Supply Amplifier Monitors / VCR / TV Personal Computers
REF
V+
V+
TO-92 Top View
V+ GND REF
1
AME, Inc.
AME4311
Low Voltage Shunt Regulator
n Ordering Information
Part Number
AME4311EEAT
Marking
AME 4311 EEAT yyww AVVww
Output Voltage Tolerance Package
1.24 0.5% TO-92
Temp. Range
- 40oC to + 85oC
AME4311EEET
1.24
0.5%
SOT-23
- 40oC to + 85oC
AME4311FEET
AVWww
1.24
1.0%
SOT-23
- 40oC to + 85oC
AME4311GEET
AVXww
1.24
1.5%
SOT-23
- 40oC to + 85oC
AME4311EEEV
AGFww
1.24
0.5%
SOT-25
- 40oC to + 85oC
Please consult AME sales office or authorized Rep./Distributor for other voltage accuracy and package type availability.
2
AME, Inc.
AME4311
Low Voltage Shunt Regulator
n Absolute Maximum Ratings
Parameter
Supply Current
Maximum
20
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
100A ~ 15mA -40 to +85 -40 to +125
Unit
o
C C
o
n Thermal Information
Parameter
SOT-23 Thermal Resistance SOT-25 TO-92 Maximum Junction Temperature Maximum Lead Temperature (10 Sec)
Maximum
325 325 180 150 300
Unit
o
C/W
o
C C
o
3
AME, Inc.
AME4311
Low Voltage Shunt Regulator
n Electrical Specifications
TA = 250C, IREF=10mA unless otherwise specified
Parameter Reference Voltage (Test Circuit 1) Ratio of Change in VREF to Cathode Voltage Reference Input Current Off State Leakage Minimum Current IK Reference Voltage Temp. Coeff. Dynamic Output Impendance Symbol VREF 0.5% VREF 1.0% VREF 1.5% VREF VK IREF IK (OFF) IMIN V REFTC 0oC < TA < 70oC V Z = VREF , IZ = 0.1mA to 15mA, Frequency = OHZ Test Condition TA =25oC, IREF = 10mA TA =25 C, IREF = 10mA TA =25oC, IREF = 10mA VKA = 6V to 8V (Test Circuit 2) Test Circuit 2 V REF = 0V VK = 7V (Test Circuit 3) 80 100 0.3 0.4 1000 nA A ppm/ oC
o
Min
Typ
Max
Units V V V mV/V A
1.234 1.240 1.246 1.228 1.240 1.252 1.221 1.240 1.258 -2.7 0.3 1.0
rZ
VIN
VKA = VREF IKA=10mA
VIN
VKA
VIN
VKA IK(OFF)
R1 VREF R2
IREF
IK
Test Circuit 1
Test Circuit 2
Test Circuit 3
4
AME, Inc.
AME4311
Dynamic Impedance vs. Temperature
Dynamic Impedance 0.1-15mA (ohm)
0.33 0.31 0.29 0.27 0.25 0.23 0.21 0.19 0.17 0.15 -45 -5 25 55 85
Low Voltage Shunt Regulator
Reference Voltage vs. Temperature
Reference Voltage @ 10mA(V)
1.234
0.35
1.232
1.230
1.228
1.226
1.224
1.222 -45
-5
25
55
85
Temperature
(oC)
Temperature (oC)
Reference Input Current vs. Temperature
0.14
Line Transient Response, IK=10mA
Reference Input Current (uA)
0.12
VIN
0.10 0.08 0.06 0.04 0.02 0.00 -45
1V / DIV
VOUT
-5
25
55
85
CH1
1.00V
CH2
1.00V
M1.00S
CH1
800mV
Temperature ( oC)
Frequency=100KHz
High Current Operating Characteristics
50
Low Current Operating Characteristics
1050 900 750 600 450 300 150 0 -150 -1.0
IK- Cathode Current (mA)
30 20 10 0 -10 -20 -30 -1.0
-0.5
0
0.5
1.0
1.5
IK- Cathode Current (A)
40
T=25 OC
-0.5
0
0.5
1.0
1.5
VKA- Cathode Voltage (V)
VKA- Cathode Voltage (V)
5
AME, Inc.
AME4311
Low Voltage Shunt Regulator
n Package Dimension
TO-92-3 (bulk pack)
SYMBOLS A b E e e1 L R MILLIMETERS MIN MAX
4.95 0.51 3.94 2.67 1.40 15.49 2.41 0.56 4.95
INCHES MIN
0.1701 0.0142 0.1299 0.0949 0.0449 0.5000 0.0850 0.0161 0.1752
MAX
0.1949 0.0201 0.1551 0.1051 0.0551 0.6098 0.0949 0.0220 0.1949
Top View
4.32 0.36 3.30 2.41 1.14 12.70 2.16 0.41 4.45
Side View
W D
Notes: 1. Package outline exclusive of any mold flashes dimension. 2. Package outline exclusive of burr dimension. 3. Lead pitch=2.54mm is bulk pack. 4. Lead pitch=5.08mm is tape pack.
TO-92-3 (tape pack)
SYMBOLS A b E e e1 L R W D
MILLIMETERS MIN MAX
4.95 0.51 3.94 5.08 2.54 15.49 2.41 0.56 4.95
INCHES MIN
0.1701 0.0142 0.1299 0.1961 0.0980 0.5000 0.0850 0.0161 0.1752
MAX
0.1949 0.0201 0.1551 0.2000 0.1000 0.6098 0.0949 0.0220 0.1949
Top View
4.32 0.36 3.30 4.98 2.49 12.70 2.16 0.41 4.45
Side View
Notes: 1. Package outline exclusive of any mold flashes. 2. Package outline exclusive of burr dimension. 3. Lead pitch=2.54mm is bulk pack. 4. Lead pitch=5.08mm is tape pack.
6
AME, Inc.
AME4311
Low Voltage Shunt Regulator
n Package Dimension
SOT-23
Top View D Side View
SYMBOLS
C
MILLIMETERS MIN 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
A
L
1.00 0.00 0.35 0.09 2.70 1.40
A1 b C D E
E
e
H
c 1
e H L
1.90 BSC 2.40 3.00
0.0748 BSC 0.09449 0.11811 0.0138BSC 0o 10 o
Front View
0.35BSC 0o 10o
SOT-25
Top View D Side View
A1
b
A
e1
SYMBOLS A A1
H E L
MILLIMETERS MIN
0.00 0.30 2.70 1.40
INCHES MIN
0.0000 0.0118 0.1063 0.0551
MAX
0.15 0.55 3.10 1.80
MAX
0.0059 0.0217 0.1220 0.0709
1.20REF
0.0472REF
b D E
S1 e c 1
e H L e1 S1
1.90 BSC 2.60 3.00
0.07480 BSC 0.10236 0.11811 0.0146BSC 0o 10o
0.37BSC 0o 10 o
Front View A
0.95BSC
0.0374BSC
b
A1
7
www.ame.com.tw
E-Mail: sales@ame.com.tw
Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, 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) AME, Inc. , December 2003 Document: 2012-DS4311-A
Corporate Headquarter
AME, Inc.
2F, 189 Kang-Chien Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989
U.S.A. (Subsidiary)
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489

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