參數(shù)資料
型號(hào)： TPS2551DBVR
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
封裝： GREEN, PLASTIC, SOT-23, 6 PIN
文件頁(yè)數(shù)： 15/32頁(yè)
文件大?。?/td> 1402K
代理商： TPS2551DBVR
OUT
IN
GND
FAULT
ILIM
EN
Input
TPS2551
PowerPad
Output
10kW
STAT
ExternalLogic
EnableSignal
SN74HC00D
0.1 F
m
0.1 F
m
R
10k
FAULT
W
15kW
CLOAD
RLOAD
TWO-LEVEL CURRENT-LIMIT CIRCUIT
OUT
IN
GND
FAULT
ILIM
EN
ControlSignal
Input
TPS2550/51
FAULT Signal
PowerPad
Output
CurrentLimit
ControlSignal
0.1 F
m
R
100k
FAULT
W
R1
80.6kW
R2
20kW
CLOAD
RLOAD
Q1
2N7002
SLVS736B – FEBRUARY 2008 – REVISED NOVEMBER 2008 ........................................................................................................................................ www.ti.com
Figure 24. Overcurrent Latch-Off Using a Quad-NAND Gate
Some applications require different current-limit thresholds depending on external system conditions. Figure 25
shows an implementation for an externally controlled, two-level current-limit circuit. The current-limit threshold is
set by the total resistance from ILIM to GND (see previously discussed "Programming the Current-Limit
Threshold" section). A logic-level input enables/disables MOSFET Q1 and changes the current-limit threshold by
modifying the total resistance from ILIM to GND. Additional MOSFETs/resistor combinations can be used in
parallel to Q1/R2 to increase the number of additional current-limit levels.
NOTE:
ILIM should never be driven directly with an external signal.
Figure 25. Two-Level Current-Limit Circuit
22
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2550 TPS2551
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TPS2551DBVT 功能描述:電源開關(guān) IC - USB Adj Crnt-Ltd Pwr Dist Sw RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
TPS2551DBVT 制造商:Texas Instruments 功能描述:Adjustable Power-Distribution Switch 制造商:Texas Instruments 功能描述:IC PWR DIST SWITCH ADJ SOT23-6 制造商:Texas Instruments 功能描述:IC, PWR DIST SWITCH ADJ SOT23-6 制造商:Texas Instruments 功能描述:IC, PWR DIST SWITCH ADJ SOT23-6; Primary Input Voltage:6.5V; Output Current:1.1A; Voltage Regulator Case Style:SOT-23; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:85C; SVHC:No SVHC (19-Dec-2012); Base ;RoHS Compliant: Yes
TPS2551DBVTG4 功能描述:電源開關(guān) IC - USB Adj Crnt-Ltd Pwr Dist Sw RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
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