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參數(shù)資料
| 型號： | AS1185 |
| 英文描述： | Low-Dropout Regulator; 10-pin FP;? | Voltage Regulator |
| 中文描述： | 低壓差穩(wěn)壓器，10針計劃生育;？ |穩(wěn)壓器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 115K |
| 代理商： | AS1185 |
L OW DR OPOUT
R E GUL ATOR
AS1185
Austin Semiconductor, Inc.
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
1
AS1185
Rev. 1.0 6/03
GENERAL DESCRIPTION
The AS1185 is a 2.7A low dropout regulator with adjustable
current limit and remote sense capability. It can be used as a
positive output regulator with floating input or as a standard
negative regulator with grounded input. The output voltage
range is 2.5V to 25V, with ±1% accuracy on the internal
reference voltage.
The AS1185 uses a saturation-limited NPN transistor as the
pass element. This device gives the linear dropout
characteristics of a FET pass element with significantly less die
area. High efficiency is maintained by using special
anti-saturation circuitry that adjusts base drive to track load
current. The “on resistance” is typically 0.25
.
Accurate current limit is programmed with a single 1/8W
external resistor, with a range of zero to three amperes. A
second, fixed internal limit circuit prevents destructive currents
if the programming current is accidentally overranged.
Assembly considerations for this package requires that
the fixed internal current limit circuit be bypassed at all times.
An external current limit resistor set to a maximum of 2.7A
must be used. Failure to do so on this package can result in
damage to the device.
Shutdown of the regulator output is guaranteed when the
program current is less than 1μA, allowing external logic
control of output voltage.
FEATURES
Low Resistance Pass Transistor: 0.25
Dropout Voltage: 0.75V at 2.7A
±1% Reference Voltage
Accurate
Programmable Current Limit
Shutdown Capability
Internal Reference Available
Standard 10-Lead Packages
Full Remote Sense
Low Quiescent Current:
≈
2.5mA
Good High Frequency Ripple Rejection
OPTIONS
Packages
Ceramic Flatpack
MARKINGS
F
AVAILABLE AS MILITARY
SPECIFICATIONS
Military Equipment Screening - MIL-STD-883, 1.2.2
PIN ASSIGNMENT
(Top View)
Low Dropout Regulator
For more products and information
please visit our web site at
www.austinsemiconductor.com
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2
3
4
5
10
9
8
7
6
GND
FB
V
IN
V
REF
V
IN
GND
V
OUT
NC
V
OUT
NC
AS1185
5V, 2.7A Regulator with 2.7A current limit
5.6K
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