Specification	TPS40075RHLT

Clock Sync	True
Control Features	Soft Start, Frequency Control, Current Limit, Power Good
Duty Cycle (Max)	95 %
Frequency - Switching [Max]	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	20-VFQFN Exposed Pad
Supplier Device Package	20-VQFN (3.5x4.5)
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	28 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

TPS40075 Series

4.5-V to 28-V, synchronous buck controller with voltage feed forward

Part	Duty Cycle (Max)	Output Phases	Topology	Number of Outputs	Output Type	Output Configuration	Supplier Device Package	Control Features	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Frequency - Switching [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Function	Mounting Type
Texas Instruments TPS40075RHLT	95 %	1	Buck	1	Transistor Driver	Positive	20-VQFN (3.5x4.5)	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	1 MHz	85 °C	-40 °C	20-VFQFN Exposed Pad	Step-Down	Surface Mount
Texas Instruments TPS40075RHLRG4	95 %	1	Buck	1	Transistor Driver	Positive	20-VQFN (3.5x4.5)	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	1 MHz	85 °C	-40 °C	20-VFQFN Exposed Pad	Step-Down	Surface Mount
Texas Instruments TPS40075RHLR	95 %	1	Buck	1	Transistor Driver	Positive	20-VQFN (3.5x4.5)	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	1 MHz	85 °C	-40 °C	20-VFQFN Exposed Pad	Step-Down	Surface Mount
Texas Instruments TPS40075RHLTG4	95 %	1	Buck	1	Transistor Driver	Positive	20-VQFN (3.5x4.5)	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	1 MHz	85 °C	-40 °C	20-VFQFN Exposed Pad	Step-Down	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.62
		10	$ 4.15
		25	$ 3.92
		100	$ 3.40
	Digi-Reel®	1	$ 4.62
		10	$ 4.15
		25	$ 3.92
		100	$ 3.40
	Tape & Reel (TR)	250	$ 3.23
		500	$ 2.89
		1250	$ 2.44
		2500	$ 2.32
Texas Instruments	SMALL T&R	1	$ 4.01
		100	$ 3.51
		250	$ 2.46
		1000	$ 1.99

Description

General part information

TPS40075 Series

The TPS40075 is a mid voltage, wide input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user programmable functions, including; soft start, UVLO, operating frequency, voltage feed-forward and high-side FET sensed short circuit protection.

The TPS40075 drives external N-channel MOSFETs using second generation Predictive Gate Drive to minimize conduction in the body diode of the low side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low side FET to turn on until the voltage commanded by the closed loop soft start is greater than the pre-bias voltage. Voltage feed forward provides good response to input transients and provides a constant PWM gain over a wide input voltage operating range to ease compensation requirements. Programmable short circuit protection provides fault current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 20-pin QFN package gives good thermal performance and a compact footprint.

Documents

Technical documentation and resources

Synchronous Buck Controller datasheet (Rev. A)

Data sheet