ame431b-2.5v AME, Inc., ame431b-2.5v Datasheet

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ame431b-2.5v

Manufacturer Part Number
ame431b-2.5v
Description
Adjustable Precision Shunt Regulator
Manufacturer
AME, Inc.
Datasheet
n General Description
shunt regulator with guaranteed temperature stability over
a full operation range. These ICs feature sharp turn-on
characteristics, low temperature coefficient and low out-
put impendance, which make them ideal substitutes for
Zener diodes in applications such as switching power
supply, charger and other adjustable regulators.
output voltage can be set to 2.5V to 36V for V
part type with two external resistors.
erence tolerance: 0.5% and 1.0%
which allows operation over a wide range of -40
+125
Rev.B.04
AME431B-2.5V
The reference is set to 2.5V for AME431Bxxxxx25. The
n Features
The AME431B series ICs are 3-terminal adjustable
The AME431B precision reference is offered in two ref-
The 5 main packages have low thermal impendance
o
C.
l All AME’ s Lead Free Products Meet RoHS
l High Stability under Capacitive Load
l Low Temperature Deviation: 4.5mV Typical
l Low Equivalent Full-Range Temperature Coefficient
l Low Dynamic Output Resistance: 0.2 Typical
l Sink Current Capacity from 1mA to 100mA
l Low Output Noise
l Available in 7 Packages: TO-92-3, SOT-23,
Standards
with 20PPM/
SOT-89, SOP-8, SOT-25, TSOT-23 and TSOT-25
AME
o
C Typical
REF
=2.5V
o
C t o
n Functional Block Diagram
n Applications
REF
l Adjustable Power Supplies
l Linear Regulators
l Battery Operated Computer
l Portable Electronics
l Instrumentation
l Switching Power Supply
l Mother Board
l LCD Monitor
l Note Book Computer
V
REF
Adjustable Precision
Shunt Regulator
Anode
Cathode
1

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ame431b-2.5v Summary of contents

Page 1

... AME AME431B-2.5V n General Description The AME431B series ICs are 3-terminal adjustable shunt regulator with guaranteed temperature stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low out- put impendance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger and other adjustable regulators ...

Page 2

... AME AME431B-2.5V n Typical Applications 2 Shunt Regulator REF R2 High Current Shunt Regulator REF AME431B R3 Current Source or Current Limit AME431B Adjustable Precision Shunt Regulator V OUT V =(1+R1/R2 REF AME431B V OUT V =(1+R2/R3 REF R2 I OUT I =V /R2+I OUT REF KA Rev.B.04 ...

Page 3

... AME AME431B-2.5V n Typical Applications (contd COMP PWM Controller VFB Rev.B.04 Precision 5V 1.5A Regulator V AME1117 IN Adjust R1 8.2K AME431B Precision 5V 1.5A Regulator R3 R2 680 PS521 Adjustable Precision Shunt Regulator V OUT 5V, 1.5A R2 250 R3 250 R4 V OUT Q1 R6 AME431B 3 ...

Page 4

... AME AME431B-2.5V n Pin Configuration SOT-23/TSOT-23 Top View 3 AME431B 1 2 SOT-89 Front View AME431B SOP-8 Top View AME431B AME431BAJETXXXX 1. Cathode 2. REF 3. Anode * Die Attach: Conductive Epoxy AME431BAJFTXXXX 1. REF 2. Anode 3. Cathode * Die Attach: Conductive Epoxy AME431BAJHAXXXX 1. Cathode 2 ...

Page 5

... AME AME431B-2.5V n Ordering Information AME431B Pin Operating Ambient Configuration Temperature Range Cathode J: - +125 2. REF (SOT-23) 3. Anode (TSOT-23 REF 2. Cathode (SOT-23) 3. Anode (TSOT-23 REF 2. Anode (SOT-89) 3. Cathode A 1. REF 2. Anode (TO-92-3) 3. Cathode A 1. Cathode 2 ...

Page 6

... AME AME431B-2.5V n Ordering Information Part Number Marking* AME431BAJETA25Z AME431BAJETA25Y AME431BBJETA25Z AME431BBJETA25Y AME431BAJETB25Z AME431BAJETB25Y AME431BBJETB25Z AME431BBJETB25Y AME431BAJFTA25Z AME431BAJFTB25Z AME431BAJHAB25Z AME431BAJATB25Z AME431BAJATB25Z-1 AME431BAJATA25Z AME431BAJATA25Z-1 Note: yyww & ww represents the date code and pls refer to Date Code Rule on Package Dimension line on top of the first letter represents lead free plating such as BAFww. ...

Page 7

... AME AME431B-2.5V n Absolute Maximum Ratings Parameter Cathode Current Cathode Voltage Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device n Recommended Operating Conditions Parameter Supply Current Operation Voltage Range Ambient Temperature Range Junction Temperature Range Storage Temperature Range Rev ...

Page 8

... AME AME431B-2.5V n Thermal Information Parameter Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Solder Iron (10 Sec)*** * Measure on backside center of tab Measure on center of molding compound if IC has no tab. JC *** MIL-STD-202G 210F 8 Package Die Attach SOT-23** TSOT-23 SOT-89* Conductive Epoxy TO-92-3** SOP-8** ...

Page 9

... AME AME431B-2.5V n Electrical Specifications (AME431Bxxxxx25 10mA unless otherwise specified A REF Parameter 0.5% Reference Voltage 1.0% Deviation of Reference Voltage Over Temperature Ratio of Change in Reference Voltage to the Change in Cathode Voltage Reference Current Deviation of Reference Current Over Full Temperature Range Minimum Cathode Current for ...

Page 10

... AME AME431B-2.5V Cathode Current vs. Cathode Voltage 150 REF 100 50 0 -50 -100 - Cathode Voltage (V) Reference Current vs. Temperature 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 - Temperature ( 1K 10K 10K Small Signal Frequency 115 125 o C) Small Signal Voltage Gain vs. Frequency ...

Page 11

... AME AME431B-2.5V 5 Input 2.5V REF 3 Output Time ( 10mA 0.1 1K 10K 100K Frequency (Hz) Stability Boundary Conditions vs. Load Capacitance 100 = ___ V =10V KA VKA=15V: No oscillation 0.01uF 0.1uF Load Capacitance Rev.B.04 Small Signal Voltage Gain vs ...

Page 12

... AME AME431B-2.5V Delta Reference Voltage vs. Temperature 0 -0.2 -0.4 -0.6 -0.8 -1 -1.2 -1.4 -45 - Temperature ( Impedance vs. Temperature 0.25 0.20 0.15 0.10 0.05 0.00 - Temperature ( 2.5V REF 55 70 100 125 115 125 o C) Adjustable Precision Shunt Regulator Off-State Current vs. Temperature 2.0 1 36V 1.6 REF 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 - Temperature ( C) Reference Voltage vs. Temperature 2 ...

Page 13

... AME AME431B-2.5V n Date Code Rule Marking Date Code Tape and Reel Dimension SOT-25 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) SOT-25 8.0± ...

Page 14

... AME AME431B-2.5V n Tape and Reel Dimension TSOT-25 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) TSOT-25 8.0±0.1 mm SOT-89 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) SOT-89 12.0±0 AME AME Pitch (P) 4.0± ...

Page 15

... AME AME431B-2.5V n Tape and Reel Dimension SOT-23 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) SOT-23 8.0±0.1 mm TSOT-23 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) TSOT-23 Rev.B.04 P AME AME Pitch (P) 4.0± ...

Page 16

... AME AME431B-2.5V n Tape and Reel Dimension SOP-8 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) SOP-8 12.0±0.1 mm TO-92-3 W Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) 18.0 TO-92 Pitch (P) 4.0±0.1 mm AME AME PIN 1 Pitch (P) +1 ...

Page 17

... AME AME431B-2.5V n Package Dimension TO-92-3 (bulk pack) Top View PIN 1 Side View b TO-92-3 (tape pack) Top View PIN 1 Side View b Rev.B.04 SYMBOLS D E-PIN C 1/ Notes Package outline exclusive of any mold flashes dimension. 2. Package outline exclusive of burr dimension. 3. Lead pitch=2.54mm is bulk pack. ...

Page 18

... AME AME431B-2.5V n Package Dimension SOT-23 Top View D PIN 1 e Front View b TSOT-23 Top View D PIN 1 e Front View b 18 Side View SYMBOLS θ Side View θ1 SYMBOLS A Adjustable Precision Shunt Regulator MILLIMETERS ...

Page 19

... AME AME431B-2.5V n Package Dimension SOT-89 Top View D D1 PIN 1 e Bottom View Rev.B.04 Side View 3' 10' C Front View MATTE FINISH I POLISH Adjustable Precision Shunt Regulator MILLIMETERS SYMBOLS MIN MAX A 1.39 1.60 A 0.8 REF 1 C 0.35 0.44 D 4.39 4.60 D 1.35 1. 2.28 2.60 I 0.36 0.56 3.00 REF e H 0.70 REF S1 1.50 REF E2 2.05 2.60 D2 1.50 1.85 INCHES ...

Page 20

... AME AME431B-2.5V n Package Dimension SOP-8 Top View H PIN 1 D Front View o 7 (4X SOT-25 Top View D PIN Front View b 20 Side View C SYMBOLS E L θ Side View θ1 SYMBOLS Adjustable Precision Shunt Regulator MILLIMETERS MIN MAX MIN A 1.35 1.75 0.05315 A 0.10 0.30 0.00394 0.01181 1 1 ...

Page 21

... AME AME431B-2.5V n Package Dimension TSOT-25 Top View D PIN Front View b Rev.B.04 Side View SYMBOLS θ1 A Adjustable Precision Shunt Regulator MILLIMETERS INCHES MIN MAX MIN MAX 0.90 1.25 0.0354 0.0492 0.30 0.50 0.0118 0.0197 2.70 3.10 0.1063 0.1220 1.40 1.80 0.0551 0.0709 1.90 BSC 0.07480 BSC 2 ...

Page 22

... 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 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. ...

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