AMS1084 Advanced Monolithic Systems, AMS1084 Datasheet

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AMS1084

Manufacturer Part Number
AMS1084
Description
5A LOW DROPOUT VOLTAGE REGULATOR
Manufacturer
Advanced Monolithic Systems
Datasheet

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AMS1084CD
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AMS
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20 000
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AMS1084CD-3.3
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AMS1084CM
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AMS1084CM
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AMS1084CM
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AMS1084CM-3.3
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FEATURES
GENERAL DESCRIPTION
The
down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V at maximum output
current, decreasing at lower load currents.
conditions on both the regulator and power source circuitry.
The AMS1084 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package and
3 and 2 lead TO-263 (Plastic DD).
ORDERING INFORMATION:
1- Ground
2- V
3- V
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
PIN CONNECTIONS
FIXED VERSION
The AMS1084 series of adjustable and fixed voltage regulators are designed to provide 5A output current and to operate
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload
AMS1084CT
AMS1084CT-1.5
AMS1084CT-2.5
AMS1084CT-2.85
AMS1084CT-3.0
AMS1084CT-3.3
AMS1084CT-3.5
AMS1084CT-5.0
Three Terminal Adjustable or Fixed
Output Current of 5A
Operates Down to 1V Dropout
Line Regulation: 0.015%
Load Regulation: 0.1%
TO-220 and TO-263 packages available
1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
Advanced
Monolithic
Systems
3 LEAD TO-220
OUT
IN
PACKAGE TYPE
AMS1084CM
AMS1084CM-1.5
AMS1084CM-2.5
AMS1084CM-2.85
AMS1084CM-3.0
AMS1084CM-3.3
AMS1084CM-3.5
AMS1084CM-5.0
2&3 LEAD TO-263
ADJUSTABLE VERSION
1- Adjust
2- V
3- V
OUT
IN
TEMPERATURE RANGE
OPERATING JUNCTION
0 to 125 C
0 to 125 C
0 to 125 C
0 to 125 C
0 to 125 C
0 to 125 C
0 to 125 C
0 to 125 C
5A LOW DROPOUT VOLTAGE REGULATOR
APPLICATIONS
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Microprocessor Supply
Battery Chargers
Constant Current Regulators
Notebook/Personal Computer Supplies
Portable Instrumentation
OUTPUT
OUTPUT
OUTPUT
TAB IS
TAB IS
TAB IS
3L TO-263 FRONT VIEW
2L TO-263 FRONT VIEW
FRONT VIEW
AMS1084
3
2
1
3
2
1
3
2
1

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AMS1084 Summary of contents

Page 1

... On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry. The AMS1084 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package and 3 and 2 lead TO-263 (Plastic DD). ...

Page 2

... AMS1084-2.85 AMS1084-3.0 AMS1084-3.3 AMS1084-3.5 AMS1084-5.0 Line Regulation AMS1084/-1.5/-2.5/-2.85/ -3.0/-3.3/-3.5/-5.0 Load Regulation AMS1084 (Notes 2, 3) AMS1084-1.5 AMS1084-2.5 AMS1084-2.85 AMS1084-3.0 AMS1084-3.3 AMS1084-3.5 AMS1084-5.0 Dropout Voltage AMS1084/-1.5/-2.5/-2.85/ -3.0/-3.3/-3.5/-5 OUT Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 (Note 1) ...

Page 3

... Minimum Load AMS1084 Current Quiescent Current AMS1084/-1.5/-2.5/-2.85/ -3.0/-3.3/-3.5/-5.0 Ripple Rejection AMS1084 AMS1084-1.5 AMS1084-2.5 AMS1084-2.85 AMS1084-3.0 AMS1084-3.3 AMS1084-3.5 AMS1084-5.0 Thermal Regulation AMS1084 Adjust Pin Current AMS1084 Adjust Pin Current AMS1084 Change Temperature Stability Long Term Stability RMS Output Noise (% OUT Thermal Resistance Junction-to-Case Parameters identified with boldface type apply over the full operating temperature range ...

Page 4

... Stability The circuit design used in the AMS1084 series requires the use of an output capacitor as part of the device frequency compensation. The addition of F aluminum electrolytic solid ...

Page 5

... Figure 1. Basic Adjustable Regulator Load Regulation True remote load sensing it is not possible to provide, because the AMS1084 is a three terminal device. The resistance of the wire connecting the regulator to the load will limit the load regulation. The data sheet specification for load regulation is measured at the bottom of the package ...

Page 6

... Line Transient Response ADJ 20 0 -20 - 10V OUT - 0. TANTALUM TANTALUM OUT 100 100 TIME ( s) AMS1084 Temperature Stability 2.0 1.0 0 -1.0 -2.0 -50 - 100 125 150 TEMPERATURE (° C) Short-Circuit Current P 0.8 1 ...

Page 7

... DIA 0.230-0.270 (5.842-6.858) 0.570-0.620 (14.478-15.748) 0.330-0.370 (8.382-9.398) 0.218-0.252 (5.537-6.401) 0.050 (1.270) TYP 0.028-0.038 (0.711-0.965) AMS1084 Adjust Pin Current (Adjustable only) 100 -50 - ...

Page 8

... LEAD TO-263 PLASTIC DD (M) 0.165-0.180 0.060 (4.191-4.572) (1.524) 0.390-0.415 (9.906-10.541) TYP 0.330-0.370 (8.382-9.398) 0.199-0.218 (5.05-5.54 ) 0.032 (0.81) TYP AMS1084 0.045-0.055 (1.143-1.397) 0.004 +0.008 -0.004 +0.203 ( ) 0.102 -0.102 0.095-0.115 0.108 (2.413-2.921) (2.74) TYP 0.90-0.110 (2 ...

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