The TPS54040 device is a 42-V 0

TPS54040-Q1

Manufacturer Part NumberTPS54040-Q1
DescriptionThe TPS54040 device is a 42-V 0
ManufacturerTexas Instruments
TPS54040-Q1 datasheet
 


Specifications of TPS54040-Q1

Iout(max)(a)0.5Vin(min)(v)3.5
Vin(max)(v)42Vout(min)(v)0.8
Vout(max)(v)39Iq(typ)(ma)0.116
Switching Frequency(max)(khz)2500Switch Current Limit(typ)(a)0.6
TopologyBuck,Inverting Buck-BoostOperating Temperature Range(c)-40 to 125
Pin/package10MSOP-PowerPAD, 10SONDuty Cycle(max)(%)95
Regulated Outputs(#)1  
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TPS54040-Q1
SLVSA26C – JANUARY 2010 – REVISED AUGUST 2011
www.ti.com
DETAILED DESCRIPTION (continued)
PH
PH
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IL
IL
Figure 43. Plot of Synchronizing in ccm
Figure 44. Plot of Synchronizing in dcm
PH
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Figure 45. 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 100kΩ 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.
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