Integrated Circuits (ICs)

LM5176PWPT

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55V WIDE VIN SYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER

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Search across all available documentation for this part.

DocumentsAn overview of conducted EMI specifications for power supplies A Method to Improve LM5176 Overcurrent Protection Feature +10

Integrated Circuits (ICs)

LM5176PWPT

Active

Texas Instruments

55V WIDE VIN SYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER

Deep-Dive with AI

DocumentsAn overview of conducted EMI specifications for power supplies A Method to Improve LM5176 Overcurrent Protection Feature +10

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM5176PWPT

Clock Sync	True
Control Features	Current Limit, Power Good, Soft Start, Frequency Control, Enable
Duty Cycle (Max) [Max]	100 %
Frequency - Switching [Max]	600 kHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	28-PowerTSSOP
Package / Case [custom]	4.4 mm
Package / Case [custom]	0.173 "
Supplier Device Package	28-HTSSOP
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	55 V
Voltage - Supply (Vcc/Vdd) [Min]	4.2 V

LM5176-Q1 Series

55-V wide VIN synchronous 4-switch buck-boost controller, AEC-Q100 qualified

Part	Output Phases	Duty Cycle (Max) [Max]	Package / Case [custom]	Package / Case	Package / Case [custom]	Control Features	Mounting Type	Frequency - Switching [Max]	Frequency - Switching [Min]	Topology	Output Configuration	Supplier Device Package	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Function	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Qualification	Grade	Current - Output	Supplied Contents	Voltage - Input [Max]	Voltage - Input [Min]	Voltage - Output	Board Type	Frequency - Switching	Outputs and Type	Outputs and Type	Utilized IC / Part	Main Purpose	Regulator Topology
Texas Instruments LM5176PWPR	1	100 %	4.4 mm	28-PowerTSSOP	0.173 "	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	600 kHz	100 kHz	Buck-Boost	Positive	28-HTSSOP	1	55 V	4.2 V	Step-Up/Step-Down	Transistor Driver	-40 °C	125 ¯C
Texas Instruments LM5176QPWPTQ1	1	100 %	4.4 mm	28-PowerTSSOP	0.173 "	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	600 kHz	100 kHz	Buck-Boost	Positive	28-HTSSOP	1	55 V	4.2 V	Step-Up/Step-Down	Transistor Driver	-40 °C	150 °C	AEC-Q100	Automotive
Texas Instruments LM5176PWPT	1	100 %	4.4 mm	28-PowerTSSOP	0.173 "	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	600 kHz	100 kHz	Buck-Boost	Positive	28-HTSSOP	1	55 V	4.2 V	Step-Up/Step-Down	Transistor Driver	-40 °C	125 ¯C
Texas Instruments LM5176EVM-HP																						12 A	Board(s)	36 V	6 V	12 V	Fully Populated	250 kHz	Non-Isolated	1	LM5176	DC/DC Step Up or Down	Buck-Boost
Texas Instruments LM5176RHFT	1	50 %		28-VFQFN Exposed Pad		Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	600 kHz	100 kHz	Buck-Boost	Positive	28-VQFN (5x4)	1	55 V	4.2 V	Step-Up/Step-Down	Transistor Driver	-40 °C	125 ¯C
Texas Instruments LM5176RHFR	1			28-VFQFN Exposed Pad		Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	600 kHz	100 kHz	Buck-Boost	Positive	28-VQFN (5x4)	1	55 V	4.2 V	Step-Up/Step-Down	Transistor Driver	-40 °C	125 ¯C

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	$ 10.10
		10	$ 7.02
		25	$ 6.23
		100	$ 5.34
	Digi-Reel®	1	$ 10.10
		10	$ 7.02
		25	$ 6.23
		100	$ 5.34
	Tape & Reel (TR)	250	$ 4.36
Texas Instruments	SMALL T&R	1	$ 6.41
		100	$ 5.23
		250	$ 4.11
		1000	$ 3.48

Description

General part information

LM5176-Q1 Series

The LM5176-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5176-Q1 operates over a wide input voltage range of 4.2 V to 55 V (60 V absolute maximum) to support a variety of applications.

The LM5176-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.

The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5176-Q1 features optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.