LT1121

更新时间： 2024-11-21 21:55:23

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
16页	236K
描述
500mA, Low Voltage, Very Low Dropout Linear Regulator

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LT1121 数据手册

LT3021/LT3021-1.2/

LT3021-1.5/LT3021-1.8

500mA, Low Voltage,

Very Low Dropout

Linear Regulator

DESCRIPTIO

FEATURES

The LT^®3021 is a very low dropout voltage (VLDO^TM) linear

regulator that operates from input supplies down to 0.9V.

This device supplies 500mA of output current with a

typical dropout voltage of 160mV. The LT3021 is ideal for

low input voltage to low output voltage applications,

providing comparable electrical efficiency to that of a

switching regulator.

■

V_INRange: 0.9V to 10V

■

Dropout Voltage: 160mV Typical

■

Output Current: 500mA

■

Adjustable Output (V_REF= V_OUT(MIN)= 200mV)

■

Fixed Output Voltages: 1.2V, 1.5V, 1.8V

■

Stable with Low ESR, Ceramic Output Capacitors

(3.3µF Minimum)

■

0.2% Load Regulation from 0mA to 500mA

The LT3021 regulator optimizes stability and transient

response with low ESR, ceramic output capacitors as

small as 3.3µF. Other LT3021 features include 0.05%

typical line regulation and 0.2% typical load regulation. In

shutdown, quiescent current typically drops to 3µA.

■

Quiescent Current: 120µA (Typ)

■

3µA Typical Quiescent Current in Shutdown

■

Current Limit Protection

■

Reverse-Battery Protection

■

No Reverse Current

■

Internal protection circuitry includes reverse-battery pro-

tection, current limiting, thermal limiting with hysteresis,

andreverse-currentprotection. TheLT3021isavailableas

an adjustable output device with an output range down to

the 200mV reference. Three fixed output voltages, 1.2V,

1.5V and 1.8V, are also available.

Thermal Limiting with Hysteresis

■

16-Pin DFN (5mm × 5mm) and 8-Lead

SO Packages

APPLICATIO S

■

Low Current Regulators

The LT3021 regulator is available in the low profile

(0.75mm) 16-pin (5mm × 5mm) DFN package with ex-

posed pad and the 8-lead SO package.

, LTC and LT are registered trademarks of Linear Technology Corporation. VLDO is a

trademark of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

■

Battery-Powered Systems

■

Cellular Phones

■

Pagers

■

Wireless Modems

TYPICAL APPLICATIO

Minimum Input Voltage

1.8V to 1.5V, 500mA VLDO Regulator

1.1

= 500mA

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

OUT

LT3021-1.5

1.5V

1.8V

500mA

3.3µF

SHDN SENSE

GND

3021 TA01

–50 –25

75 100 125

TEMPERATURE (°C)

3021 TA02

3021fa

12 3 4 5 6 7...16

中文翻译

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与LT1121相关器件

型号	品牌	获取价格	描述	数据表
LT1121_07	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121_12	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121_15	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-3.3	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-3.3_15	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-5	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121-5_15	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121ACS8	Linear	获取价格	Micropower Low Dropout Regulators with Shutdown
LT1121ACS8#PBF	Linear	获取价格	LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SO; Pins: 8; Temperatur
LT1121ACS8#TR	Linear	获取价格	LT1121 - Micropower Low Dropout Regulators with Shutdown; Package: SO; Pins: 8; Temperatur

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