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LTC2926 PDF预览

LTC2926

更新时间： 2023-12-20 18:44:57
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
28页 541K
描述
MOSFET 控制型电源跟踪器

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中文翻译

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LTC2926 数据手册

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LTC2926  
MOSFET-Controlled  
Power Supply Tracker  
U
DESCRIPTIO  
FEATURES  
■
Flexible Power Supply Tracking and Sequencing  
The LTC2926 provides a simple solution for tracking and  
sequencing up to three power supply rails. An N-channel  
MOSFET and a few resistors per channel configure the  
load voltages to ramp up and down together, with voltage  
offsets, with time delays or with different ramp rates.  
■
Adjustable Ramp Rates, Offsets and Time Delays  
■
Controls Three Supplies with Series MOSFETs  
■
Integrated Remote Sense Switching  
■
FAULT Input/Output  
■
STATUS Output/Power Good Input  
Automaticremotesenseswitchingcompensatesforvoltage  
drops across the MOSFETs. The LTC2926 provides two  
integrated switches as well as a signal to control optional  
additional external N-channel MOSFET sense switches.  
■
Available in 20-Lead Narrow SSOP and 20-Lead QFN  
(4mm × 5mm) Packages  
U
APPLICATIO S  
The LTC2926 includes I/O signals for communication with  
other devices. The status output asserts after tracking and  
sequencing have completed. A low voltage on the power  
good input after an adjustable timeout period causes load  
disconnect. A low voltage on the fault I/O causes immedi-  
ate load disconnect. Until it is reset, a fault latch prevents  
tracking and keeps the loads disconnected.  
■
V
and V Supply Tracking  
CORE  
I/O  
■
■
■
Microprocessor, DSP and FPGA Supplies  
Servers  
Communications Systems  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
*Protected by U.S. Patents including 6897717.  
U
TYPICAL APPLICATIO  
1.8V MODULE  
IRF7413Z  
OUT  
3.3V SLAVE2  
1.8V  
SLAVE1  
100Ω  
SENSE  
10Ω  
1.8V SLAVE1  
500mV/DIV  
3.3V MODULE  
IRF7413Z  
3.3V  
SLAVE2  
OUT  
0.1µF  
100Ω  
SENSE  
10Ω  
SGATE2 SGATE1  
2926 TA01b  
V
CC  
5ms/DIV  
D1  
D2  
S1  
15.0k  
9.53k  
FB1  
3.3V SLAVE2  
RAMPBUF  
TRACK1  
15.0k  
9.53k  
S2  
15.0k  
15.0k  
LTC2926  
1.8V SLAVE1  
500mV/DIV  
FB2  
V
CC  
4.02k  
TRACK2  
V
CC  
10k  
4.02k  
STATUS  
STATUS/PGI  
MGATE  
10k  
FAULT  
FAULT  
ON  
0.1µF  
2926 TA01c  
ON/OFF  
RAMP  
5ms/DIV  
GND PGTMR  
1µF  
2926 TA01  
2926fa  
1
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