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TPS2105

更新时间： 2024-09-20 22:42:03
品牌 Logo 应用领域
德州仪器 - TI 开关
页数 文件大小 规格书
16页 241K
描述
VAUX POWER-DISTRIBUTION SWITCHES

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TPS2105 数据手册

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TPS2104, TPS2105  
POWER-DISTRIBUTION SWITCHES  
V
AUX  
SLVS235A – SEPTEMBER 1999 – REVISED APRIL 2000  
features  
typical applications  
Dual-Input, Single-Output MOSFET Switch  
With No Reverse Current Flow (No Parasitic  
Diodes)  
Notebook and Desktop PCs  
Cell phone, Palmtops, and PDAs  
Battery Management  
IN1 . . . 250-mΩ, 500-mA N-Channel;  
18-µA Supply Current  
TPS2104  
IN1  
IN2 . . . 1.3-Ω, 100-mA P-Channel;  
0.75-µA Supply Current (V  
Mode)  
AUX  
5 V V  
5 V  
CC  
Advanced Switch Control Logic  
LOAD  
IN2  
5 V V  
AUX  
CMOS and TTL Compatible Enable Input  
Controlled Rise, Fall, and Transition Times  
2.7 V to 5.5 V Operating Range  
EN  
Holdup  
Capacitor  
Control Signal  
SOT-23-5 and SOIC-8 Package  
–40°C to 85°C Ambient Temperature Range  
Figure 1. Typical Dual-Input Single-Output  
Application  
2-kV Human Body Model, 750-V Charged  
Device Model, 200-V Machine-Model  
ESD Protection  
description  
The TPS2104 and TPS2105 are dual-input, single-output power switches designed to provide uninterrupted  
output voltage when transitioning between two independent power supplies. Both devices combine one  
n-channel (250 mΩ) and one p-channel (1.3 Ω) MOSFET with a single output. The p-channel MOSFET (IN2)  
is used with auxiliary power supplies that deliver lower current for standby modes. The n-channel MOSFET  
(IN1) is used with a main power supply that delivers higher current required for normal operation. Low  
on-resistance makes the n-channel the ideal path for higher main supply current when power-supply regulation  
and system voltage drops are critical. When using the p-channel MOSFET, quiescent current is reduced to  
0.75 µA to decrease the demand on the standby power supply. The MOSFETs in the TPS2104 and TPS2105  
do not have the parasitic diodes, typically found in discrete MOSFETs, thereby preventing back-flow current  
when the switch is off.  
TPS2104  
D PACKAGE  
(TOP VIEW)  
(TOP VIEW)  
DBV PACKAGE  
IN2  
GND  
EN  
OUT  
OUT  
NC  
1
2
3
4
8
7
6
5
IN1  
1
2
3
5
4
EN  
GND  
IN2  
OUT  
NC  
IN1  
TPS2105  
D PACKAGE  
(TOP VIEW)  
DBV PACKAGE  
(TOP VIEW)  
IN2  
GND  
EN  
OUT  
OUT  
NC  
1
2
3
4
8
7
6
5
EN  
GND  
IN2  
IN1  
1
2
3
5
4
OUT  
NC  
IN1  
NC – No internal connection  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...16

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TPS2105 替代型号

型号 品牌 替代类型 描述 数据表
TPS2104 TI

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