Specification	TPS40021MPWPREP

Clock Sync	True
Control Features	Current Limit, Power Good, Soft Start, Frequency Control, Enable
Duty Cycle (Max)	95 %
Frequency - Switching [Max]	1 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-55 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	16-PowerTSSOP
Package / Case	0.173 in, 4.4 mm Width
Supplier Device Package	16-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	5.5 V
Voltage - Supply (Vcc/Vdd) [Min]	2.25 V

TPS40021-EP Series

Enhanced Low Input (2.25V-5.5V) up to 1MHz Frequency, Sync. Buck Controller, source/sink

Part	Frequency - Switching [Max]	Frequency - Switching [Min]	Output Type	Supplier Device Package	Topology	Operating Temperature [Max]	Operating Temperature [Min]	Function	Duty Cycle (Max)	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Mounting Type	Output Phases	Package / Case	Package / Case	Number of Outputs	Control Features	Output Configuration
Texas Instruments TPS40021PWPG4	1 MHz	100 kHz	Transistor Driver	16-HTSSOP	Buck	85 °C	-40 °C	Step-Down	95 %	2.25 V	5.5 V	Surface Mount	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Current Limit Enable Frequency Control Power Good Soft Start	Positive
Texas Instruments TPS40021PWPR	1 MHz	100 kHz	Transistor Driver	16-HTSSOP	Buck	85 °C	-40 °C	Step-Down	95 %	2.25 V	5.5 V	Surface Mount	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Current Limit Enable Frequency Control Power Good Soft Start	Positive
Texas Instruments TPS40021PWP	1 MHz	100 kHz	Transistor Driver	16-HTSSOP	Buck	85 °C	-40 °C	Step-Down	95 %	2.25 V	5.5 V	Surface Mount	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Current Limit Enable Frequency Control Power Good Soft Start	Positive
Texas Instruments TPS40021MPWPEP	1 MHz	100 kHz	Transistor Driver	16-HTSSOP	Buck	125 ¯C	-55 °C	Step-Down	95 %	2.25 V	5.5 V	Surface Mount	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Current Limit Enable Frequency Control Power Good Soft Start	Positive
Texas Instruments TPS40021MPWPREP	1 MHz	100 kHz	Transistor Driver	16-HTSSOP	Buck	125 ¯C	-55 °C	Step-Down	95 %	2.25 V	5.5 V	Surface Mount	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Current Limit Enable Frequency Control Power Good Soft Start	Positive

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	$ 9.04
	Digi-Reel®	1	$ 9.04
	Tape & Reel (TR)	2000	$ 4.94
Texas Instruments	LARGE T&R	1	$ 7.96
		100	$ 6.49
		250	$ 5.10
		1000	$ 4.33

Description

General part information

TPS40021-EP Series

The TPS40021 is a dc-to-dc controller designed for non-isolated synchronous buck regulators, providing enhanced operation and design flexability through user programmability.

The device utilizes a proprietary Predictive Gate Drive technology to minimize the diode conduction losses associated with the high-side and synchronous rectifier N-channel MOSFET transistions. The integrated charge pump with boost circuit provides a regulated 5-V gate drive for both the high side and synchronous rectifier N-channel MOSFETs. The use of the Predictive Gate Drive technology and charge pump/boost circuits combine to provide a highly efficient, smaller and less expensive converter.

Design flexibility is provided through user programmability of such functions as: operating frequency, short circuit current detection thresholds, soft-start ramp time, and external synchronization frequency. The operating frequency is programmable using a single resistor over a frequency range of 100 kHz to 1 MHz. Higher operating frequencies yield smaller component values for a given converter power level as well as faster loop closure.

Documents

Technical documentation and resources

Synchronous Buck Controller . datasheet

Data sheet