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LT1120CN8 Datasheet

  • LT1120CN8

  • Micropower Regulator with Comparator and Shutdown

  • 12頁

  • LINER

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LT1120
Micropower Regulator with
Comparator and Shutdown
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
40碌A(chǔ) Supply Current
125mA Output Current
2.5V Reference Voltage
Reference Output Sources 2mA and Sinks 2mA
Open Collector
Comparator Sinks 10mA
Logic Shutdown
0.2V Dropout Voltage
Thermal Limiting
Available in 8-Lead DIP, SO and Metal Can Packages
The LT
廬
1120 is a combination micropower positive regu-
lator and free collector comparator on a single monolithic
chip. With only 40碌A(chǔ) supply current, the LT1120 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. 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.
The 2.5V reference will source or sink current. This allows
it to be used as a supply splitter or auxiliary output.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Battery Systems
Battery-Backup System
Portable Terminals
Portable Instruments
Memory Keep-Alive
TYPICAL APPLICATIO
V
IN
> 5.2V
I
Q
= 40碌A(chǔ)
5
4
5V Regulator
V
IN
LT1120
10碌F
SHDN
3
SHUTDOWN
FB
GND
1
2
1M
V
OUT
5V
0.001碌F
1M
25碌F
Dropout Voltage and Supply Current
1.00
10
DROPOUT VOLTAGE (V)
+
+
0.10
1120 TA01
0.01
0.1
U
SUPPLY CURRENT (mA)
1
10
100
1
OUTPUT CURRENT (mA)
0.1
1000
1120 TA02
U
U
1

LT1120CN8 產(chǎn)品屬性

  • LT1120

  • 50

  • 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（最小）

  • 0°C ~ 100°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-PDIP

  • 管件

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