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TPS2101DBVRG4 Datasheet(PDF) 1 Page - Texas Instruments

No. de Pieza. TPS2101DBVRG4
Descripción  POWER-DISTRIBUTION SWITCHES
Descarga  20 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS2101DBVRG4 Datasheet(HTML) 1 Page - Texas Instruments

 
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TPS2100, TPS2101
VAUX POWER-DISTRIBUTION SWITCHES
SLVS197D – JUNE 1999 – REVISED JUNE 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
features
D Dual-Input, Single-Output MOSFET Switch
With No Reverse Current Flow (No Parasitic
Diodes)
D IN1 . . . 250-mΩ, 500-mA N-Channel;
16-
µA Max Supply Current
D IN2 . . . 1.3-Ω, 10-mA P-Channel;
1.5-
µA Max Supply Current (VAUX Mode)
D Advanced Switch Control Logic
D CMOS- and TTL-Compatible Enable Input
D Controlled Rise, Fall, and Transition Times
D 2.7-V to 4 V Operating Range
D SOT-23-5 and SOIC-8 Package
D –40°C to 70°C Ambient Temperature Range
D 2-kV Human-Body-Model, 750-V CDM,
200-V Machine-Model Electrostatic-
Discharge Protection
typical applications
D Notebook and Desktop PCs
D Palmtops and PDAs
description
The TPS2100 and TPS2101 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 m
Ω) 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 TPS2100 and TPS2101
do not have the parasitic diodes, found in discrete MOSFETs, which allow the devices to prevent back-flow
current when the switch is off.
DBV PACKAGE
(TOP VIEW)
GND
IN2
IN1
OUT
EN
GND
IN2
IN1
OUT
EN
DBV PACKAGE
(TOP VIEW)
TPS2100
TPS2101
NC – No internal connection
Figure 2. VAUX CardBus Implementation
PCI12xx / PCI14xx
CardBus Controller
PCI Bus
VAUX
3.3 V
VGA
TPS210x
VCC
D3-STAT
1
2
3
4
8
7
6
5
IN2
GND
EN
NC
OUT
OUT
NC
IN1
D PACKAGE
(TOP VIEW)
D PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
IN2
GND
EN
NC
OUT
OUT
NC
IN1
1
2
3
5
4
1
2
3
5
4
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.
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.
Figure 1. Typical Dual-Input Single-Output
Application
TPS2100
IN1
IN2
EN
3.3 V VCC
3.3 V VAUX
D3 or PME Status
Control Signal
Hold-Up
Capacitor
Controller
(CardBus,
1394,
PCI,
et al.)
3.3 V


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