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TPS2101 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2101 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 17 page  TPS2100, TPS2101 VAUX POWER-DISTRIBUTION SWITCHES SLVS197C – JUNE 1999 – REVISED APRIL 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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