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LT1120ACS8 Datasheet

  • LT1120ACS8

  • Micropower Regulator with Comparator and Shutdown

  • 8頁

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LT1
120A
Micropower Regulator with
Comparator and Shutdown
FEATURES
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DESCRIPTION
The LT1120A is a combination micropower positive regu-
lator and free collector comparator on a single monolithic
chip. With only 20碌A supply current, the LT1120A can
supply over 125mA of output current. Input voltage range
is from 4.5V to 36V and dropout voltage is 0.6V at 125mA.
Dropout voltage decreases with lower load currents. Also
included on the chip is a class B output 2.5V reference that
can either source or sink current. This allows it to be used
as a supply splitter or auxiliary output. A shutdown pin
allows logic shutdown of the output.
The comparator can be used for system or battery moni-
toring. For example, the comparator can be used to warn
of low system voltage. Frequency compensation of the
comparator for amplifier applications can be obtained by
adding external output capacitance.
20碌A Supply Current
8-Lead SOIC
125mA Output Current
2.5V Reference
Reference Output Sources 4mA and Sinks 4mA
Open Collector
Comparator Sinks 10mA
Logic Shutdown
0.2V Dropout Voltage
Thermal Limiting
APPLICATIONS
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Battery Systems
Battery Backup System
Portable Terminals
Portable Instruments
Memory Keep Alive
TYPICAL APPLICATION
5V Regulator
1.00
Dropout Voltage and Supply Current
10
LT1120A
0.001碌F
FB 2
1M
+
10碌F
3
SHUTDOWN
GND
1
+
25碌F
1M
DROPOUT VOLTAGE (V)
V
IN
> 5.2V
I
Q
= 20碌A
5 V
IN
V
OUT
4
5V
0.10
1120A TA01
0.01
0.1
U
U
U
SUPPLY CURRENT (mA)
1
1
10
100
OUTPUT CURRENT (mA)
0.1
1000
1120A TA02
1

LT1120ACS8 產(chǎn)品屬性

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性

  • -

  • 正，可調(diào)式

  • 2.5 V ~ 35.15 V

  • 4.5 V ~ 36 V

  • 0.4V @ 125mA

  • 1

  • 125mA（最?。?/p>

  • -

  • 0°C ~ 100°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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