Datasheet > LTC2921_15

LTC2921_15

更新时间： 2024-01-17 03:48:18

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
20页	322K
描述
Power Supply Tracker with Input Monitors

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中文翻译

获取价格

数据手册

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LTC2921_15 数据手册

LTC2921/LTC2922 Series

Power Supply Tracker

with Input Monitors

FEATURES

DESCRIPTIO

The LTC^®2921 and LTC2922 monitor up to five supplies

and force them to track on power-up in multiple supply

systems. Using external N-channel pass transistors, the

supplies can be ramped up at an adjustable rate. Auto-

matic remote sense switching allows the DC/DC convert-

ers to compensate for series voltage drops in the wiring.

An incorrect level on one or more of the supplies triggers

disconnect of all supplies. Tight 1% accuracy and glitch

■

Tracks Multiple Supplies with MOSFET Switches

■

Monitors 5 Input Voltages Including V_CC

■

Guaranteed Threshold Accuracy: ±1% at 0.5V

■

Automatic Remote Sense Switching

■

Adjustable Supply Ramp Rate

■

Overvoltage Monitor

■

Adjustable Electronic Circuit Breaker

■

Adjustable Power-Good Delay

■

Available for V_CCSupply Voltages of 5V, 3.3V and 2.5V immunity on the low 0.5V monitoring level ensure no false

■

Available in 16-Pin Narrow SSOP (LTC2921 Series)

and 20-Pin TSSOP (LTC2922 Series)

error disconnects.

The LTC2921 and LTC2922 each feature an adjustable

electronic circuit breaker to protect the V_CCsupply against

short circuits. Capacitance at the TIMER pin programs the

delays in the monitoring sequence.

APPLICATIO S

■

Desktop Computers

■

Plug-In Cards

The LTC2921 includes three remote sense switches in a

16-pinnarrowSSOPpackage,whiletheLTC2922includes

five remote sense switches in a 20-pin TSSOP package.

Both parts are available for V_CCsupply voltages of 5V,

■

Telecom Infrastructure

■

Supply Sequencing

■

Instruments

3.3V, and 2.5V.

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

TYPICAL APPLICATIO

Three-Supply Tracker and Monitor (5V, 3.3V, 2.5V)

5V SUPPLY

LOAD

OUT

WSL1206

Si2316DS

0.05Ω

100Ω

Load Voltage Ramp-Up and

Power-Good Activation

DC/DC

CONVERTER

10Ω

3.3V SUPPLY

2.5V SUPPLY

3.3V

LOAD

OUT

2.5V SUPPLY

Si2316DS

10Ω

100Ω

2V/DIV

DC/DC

CONVERTER

5V LOAD

3.3V LOAD

2.5V LOAD

2.5V

LOAD

OUT

OUTPUTS

2V/DIV

Si2316DS

10Ω

100Ω

DC/DC

CONVERTER

2V/DIV

169k

243k

4.7k

SENSE

GATE

0.47µF

2921/22 TA01b

LTC2921

100ms/DIV

5V SUPPLY AT 5V

3.3V SUPPLY AT 3.3V

49.9k

Si1012R

RESET

CBRST

100k

GND

TIMER

~ 500ms

GATE

CIRCUIT BREAKER

RESET CONTROL

~ 130ms

TIMER

0.22µF

2921/22 TA01

29212fa

12 3 4 5 6 7...20

中文翻译

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与LTC2921_15相关器件

型号	品牌	获取价格	描述	数据表
LTC2921CGN	Linear	获取价格	Power Supply Tracker with Input Monitors
LTC2921CGN#PBF	Linear	获取价格	LTC2921 - Power Supply Tracker with Input Monitors; Package: SSOP; Pins: 16; Temperature R
LTC2921CGN-2.5	Linear	获取价格	Power Supply Tracker with Input Monitors
LTC2921CGN-2.5#PBF	Linear	获取价格	LTC2921 - Power Supply Tracker with Input Monitors; Package: SSOP; Pins: 16; Temperature R
LTC2921CGN-3.3	Linear	获取价格	Power Supply Tracker with Input Monitors
LTC2921CGN-3.3#PBF	Linear	获取价格	LTC2921 - Power Supply Tracker with Input Monitors; Package: SSOP; Pins: 16; Temperature R
LTC2921CGN-3.3#TRPBF	Linear	获取价格	暂无描述
LTC2921IGN	Linear	获取价格	Power Supply Tracker with Input Monitors
LTC2921IGN#PBF	Linear	获取价格	LTC2921 - Power Supply Tracker with Input Monitors; Package: SSOP; Pins: 16; Temperature R
LTC2921IGN#TR	Linear	获取价格	LTC2921 - Power Supply Tracker with Input Monitors; Package: SSOP; Pins: 16; Temperature R

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