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LT3023EDD Datasheet

  • LT3023EDD

  • Dual 100mA, Low Dropout, Low Noise, Micropower Regulator

  • 16頁

  • LINER

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LT3023
Dual 100mA,
Low Dropout, Low Noise,
Micropower Regulator
FEATURES
s
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DESCRIPTIO
s
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Low Noise: 20碌V
RMS
(10Hz to 100kHz)
Low Quiescent Current: 20碌A(chǔ)/Channel
Wide Input Voltage Range: 1.8V to 20V
Output Current: 100mA/Channel
Very Low Shutdown Current: <0.1
碌
A
Low Dropout Voltage: 300mV at 100mA
Adjustable Output from 1.22V to 20V
Stable with 1碌F Output Capacitor
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Reverse Battery Protected
No Reverse Current
No Protection Diodes Needed
Overcurrent and Overtemperature Protected
Thermally Enhanced 10-Lead MSOP and DFN
Packages
APPLICATIO S
s
s
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s
s
Cellular Phones
Pagers
Battery-Powered Systems
Frequency Synthesizers
Wireless Modems
The LT
廬
3023 is a dual, micropower, low noise, low drop-
out regulator. With an external 0.01碌F bypass capacitor,
output noise drops to 20碌V
RMS
over a 10Hz to 100kHz
bandwidth. Designed for use in battery-powered systems,
the low 20碌A(chǔ) quiescent current per channel makes it an
ideal choice. In shutdown, quiescent current drops to less
than 0.1碌A(chǔ). Shutdown control is independent for each
channel, allowing for flexibility in power management. The
device is capable of operating over an input voltage from
1.8V to 20V, and can supply 100mA of output current from
each channel with a dropout voltage of 300mV. Quiescent
current is well controlled in dropout.
The LT3023 regulator is stable with output capacitors as
low as 1碌F. Small ceramic capacitors can be used without
the series resistance required by other regulators.
Internal protection circuitry includes reverse battery pro-
tection, current limiting, thermal limiting and reverse
current protection. The device is available as an adjustable
device with a 1.22V reference voltage. The LT3023 regu-
lator is available in the thermally enhanced 10-lead MSOP
and DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
V
IN
3.7V TO
20V
IN
1碌F
SHDN1
SHDN2
BYP1
ADJ1
OUT1
3.3V/2.5V Low Noise Regulators
10Hz to 100kHz Output Noise
3.3V AT100mA
20碌V
RMS
NOISE
0.01碌F
422k
10碌F
LT3023
OUT2
0.01碌F
BYP2
ADJ2
GND
249k
2.5V AT100mA
20碌V
RMS
NOISE
10碌F
V
OUT
100碌V/DIV
261k
249k
3023 TA01
U
20碌V
RMS
3023 TA01b
U
U
3023f
1

LT3023EDD 產(chǎn)品屬性

  • LT3023

  • More Information on LDOs

  • 121

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性

  • -

  • 正，可調(diào)式

  • 1.22 V ~ 20 V

  • 1.8 V ~ 20 V

  • 0.3V @ 100mA

  • 2

  • 100mA

  • -40°C ~ 125°C

  • 表面貼裝

  • 10-WFDFN 裸露焊盤

  • 10-DFN（3x3）

  • 管件

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