參數(shù)資料
型號: TPS65011RGZT
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC48
封裝: 7 X 7 MM, PLASTIC, QFN-48
文件頁數(shù): 18/57頁
文件大?。?/td> 1414K
代理商: TPS65011RGZT
www.ti.com
UNDERVOLTAGE LOCKOUT
TPS65011
SLVS501A – FEBRUARY 2004 – REVISED JANUARY 2005
The undervoltage lockout circuit for the four regulators on TPS65011 prevents the device from malfunctioning at
low input voltages and from excessive discharge of the battery. Basically, it prevents the converter from turning
on the power switch or rectifier FET under undefined conditions. The undervoltage threshold voltage is set by
default to 2.75 V. After power-up, the threshold voltage can be reprogrammed through the serial interface. The
undervoltage lockout comparator compares the voltage on the VCC pin with the UVLO threshold. When the VCC
voltage drops below this threshold, the TPS65011 sets the PWRFAIL pin low and after a time t(UVLO) disables the
voltage regulators in the sequence defined by PS_SEQ. The same procedure is followed when the TPS65011
detects that its junction temperature has exceeded the overtemperature threshold, typically 160
°C, with a delay
t(overtemp). The TPS65011 automatically restarts when the UVLO (or overtemperature) condition is no longer
present.
The battery charger circuit has a separate UVLO circuit with a threshold of typically 2.5 V, which is compared
with the voltage on AC and USB supply pins.
25
相關PDF資料
PDF描述
TPS65023QRHARQ1 POWER SUPPLY SUPPORT CKT, PQCC40
TPS65040ZQER 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA71
TPS650531IRGERQ1 POWER SUPPLY SUPPORT CKT, PQCC24
TPS650532RGET 5-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24
TPS650531RGER 5-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24
相關代理商/技術參數(shù)
參數(shù)描述
TPS65012RGZR 功能描述:電池管理 Multi-Channel 1-cell Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65012RGZRG4 功能描述:電池管理 Multi-Channel 1-cell Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65012RGZT 功能描述:電池管理 Multi-Channel 1-cell Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65012RGZTG4 功能描述:電池管理 Multi-Channel 1-cell Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
TPS65013RGZR 功能描述:電池管理 Multi-Channel 1-cell Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel