參數(shù)資料
型號: TPS54140QDRCRQ1
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, PDSO10
封裝: GREEN, PLASTIC, SON-10
文件頁數(shù): 16/50頁
文件大?。?/td> 1602K
代理商: TPS54140QDRCRQ1
EXT
IL
PH
EXT
IL
PH
VOUT
EXT
IL
PH
SLVSA24B
– OCTOBER 2009 – REVISED MARCH 2011
DETAILED DESCRIPTION (continued)
Figure 44. Plot of Synchronizing in ccm
Figure 45. Plot of Synchronizing in dcm
Figure 46. Plot of Synchronizing in PSM
Power Good (PWRGD Pin)
The PWRGD pin is an open drain output. Once the VSENSE pin is between 94% and 107% of the internal
voltage reference the PWRGD pin is de-asserted and the pin floats. It is recommended to use a pull-up resistor
between the values of 10 and 100k
to a voltage source that is 5.5V or less. The PWRGD is in a defined state
once the VIN input voltage is greater than 1.5V but with reduced current sinking capability. The PWRGD will
achieve full current sinking capability as VIN input voltage approaches 3V.
Copyright
2009–2011, Texas Instruments Incorporated
23
Product Folder Link(s): TPS54140-Q1
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