參數(shù)資料
型號: TPS2100DG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: PLASTIC, SOIC-8
文件頁數(shù): 10/20頁
文件大小: 382K
代理商: TPS2100DG4
Product Folder: TPS2100, 2.7-4V Dual In/Single Out MOSFET, 0.5A Main/0.01A Aux Input, Act-Low Enable, Comm. Temp.
PRODUCT SUPPORT: APPLICATIONS
TPS2100, 2.7-4V Dual In/Single Out MOSFET, 0.5A Main/0.01A Aux Input, Act-Low Enable, Comm. Temp.
DEVICE STATUS: ACTIVE
PARAMETER NAME
TPS2100
Number of Inputs
2
IN1, IN2 Input Voltage (max) (V) 4
IN1, IN2 Input Voltage (min) (V) 2.7
Enable
1L
IN1 rDS(on) (typ) (mOhm)
250
IN2 rDS(on) (typ) (Ohms)
1.3
IN1 Output Current (max) (A)
0.5
IN2 Output Current (max) (A)
0.01
Ambient Temperature Range (C)
-40 to 70
FEATURES
q
Dual-Input, Single-Output MOSFET Switch With No Reverse Current Flow (No Parasitic Diodes)
q
IN1...250-m , 500-mA N-Channel;
16-uA Max Supply Current
q
IN2...1.3- , 10-mA P-Channel;
1.5-uA Max Supply Current (VAUX Mode)
q
Advanced Switch Control Logic
q
CMOS- and TTL-Compatible Enable Input
q
Controlled Rise, Fall, and Transition Times
q
2.7-V to 4 V Operating Range
q
SOT-23-5 and SOIC-8 Package
q
-40°C to 70°C Ambient Temperature Range
q
2-kV Human-Body-Model, 750-V CDM, 200-V Machine-Model Electrostatic-
Discharge Protection
q
Typical Applications
r
Notebook and Desktop PCs
r
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 ) and one p-channel (1.3 ) 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 0.75uA 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.
TECHNICAL DOCUMENTS
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