LM5176QPWPRQ1

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Texas Instruments

DC/DC CNTRLR SINGLE-OUT STEP DOWN/STEP UP 600KHZ AUTOMOTIVE AEC-Q100 28-PIN HTSSOP EP T/R

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LM5176QPWPRQ1

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Texas Instruments

DC/DC CNTRLR SINGLE-OUT STEP DOWN/STEP UP 600KHZ AUTOMOTIVE AEC-Q100 28-PIN HTSSOP EP T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM5176 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.

Technical Specifications

Parameters and characteristics for this part

Specification	LM5176QPWPRQ1

Clock Sync	Yes
Control Features	Soft Start, Current Limit, Frequency Control, Enable, Power Good
Frequency - Switching (Max)	600 kHz
Frequency - Switching (Min)	100 kHz
Function	Step-Up, Step-Down
Grade	Automotive
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 Length	0.173 in
Package Name	28-PowerTSSOP, 28-HTSSOP
Package Width	4.4 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) Maximum	55 V
Voltage - Supply (Vcc/Vdd) Minimum	4.2 V

LM5176 Series

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

Part	Package Width	Package Name	Package Length	Operating Temperature (Max)	Operating Temperature (Min)	Control Features	Mounting Type	Duty Cycle (Max)	Output Type	Output Configuration	Clock Sync	Output Phases	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Synchronous Rectifier	Number of Outputs	Function	Topology	Frequency - Switching (Min)	Frequency - Switching (Max)	Grade	Qualification	Board Type	Supplied Contents	Total Output Count	Non-Isolated Output Count	Voltage - Output	Contents	Main Purpose	Frequency - Switching	Current - Output	Regulator Topology	Utilized IC / Part	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Package / Case
Texas Instruments LM5176PWPR	4.4 mm	28-HTSSOP 28-PowerTSSOP	0.173 in	125 °C	-40 °C	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	100 %	Transistor Driver	Positive	Yes	1	4.2 V	55 V	Yes	1	Step-Down Step-Up	Buck-Boost	100 kHz	600 kHz
Texas Instruments LM5176QPWPTQ1	4.4 mm	28-HTSSOP 28-PowerTSSOP	0.173 in	150 °C	-40 °C	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	100 %	Transistor Driver	Positive	Yes	1	4.2 V	55 V	Yes	1	Step-Down Step-Up	Buck-Boost	100 kHz	600 kHz	Automotive	AEC-Q100
Texas Instruments LM5176QPWPRQ1	4.4 mm	28-HTSSOP 28-PowerTSSOP	0.173 in	125 °C	-40 °C	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount		Transistor Driver	Positive	Yes	1	4.2 V	55 V	Yes	1	Step-Down Step-Up	Buck-Boost	100 kHz	600 kHz	Automotive	AEC-Q100
Texas Instruments LM5176PWPT	4.4 mm	28-HTSSOP 28-PowerTSSOP	0.173 in	125 °C	-40 °C	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	100 %	Transistor Driver	Positive	Yes	1	4.2 V	55 V	Yes	1	Step-Down Step-Up	Buck-Boost	100 kHz	600 kHz
Texas Instruments LM5176EVM-HP									Non-Isolated														Fully Populated	Board(s)	1	1 count	12 V	Board	DC/DC Step Up or Down	250 kHz	12 A	Buck-Boost	LM5176	6 V	36 V
Texas Instruments LM5176RHFT	4 mm	28-VQFN	5 mm	125 °C	-40 °C	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount	50 %	Transistor Driver	Positive	Yes	1	4.2 V	55 V	Yes	1	Step-Down Step-Up	Buck-Boost	100 kHz	600 kHz																28-VFQFN Exposed Pad
Texas Instruments LM5176RHFR	4 mm	28-VQFN	5 mm	125 °C	-40 °C	Current Limit Enable Frequency Control Power Good Soft Start	Surface Mount		Transistor Driver	Positive	Yes	1	4.2 V	55 V	Yes	1	Step-Down Step-Up	Buck-Boost	100 kHz	600 kHz																28-VFQFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

An overview of conducted EMI specifications for power supplies

LM5176-Q1 55-V Wide VIN Synchronous 4-Switch Buck-Boost Controller datasheet (Rev. B)

LM5176 Power Sharing Between Two Parallel, Four-Switch Buck-Boost Converters

LM5176 and LM5176-Q1 Functional Safety, FIT Rate, Failure FMD

An overview of radiated EMI specifications for power supplies

Bidirectional TEC Driver Design for 40-W TEC