LM5176-Q1 Series

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

Catalog

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

Catalog

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

Key Features

• AEC-Q100 qualified for automotive applicationsTemperature grade 1: -40°C to 125°C TAFunctional Safety-CapableDocumentation available to aid functional safety system designSingle inductor buck-boost controller for step-up/step-down DC/DC conversionWide VIN: 4.2 V (2.5 V with bias) to 55 V (60 V maximum)Flexible VOUT: 0.8 V to 55 VVOUTshort protectionHigh efficiency buck-boost transitionAdjustable switching frequencyOptional frequency sync and ditheringIntegrated 2-A MOSFET gate driversCycle-by-cycle current limit and optional hiccupOptional input or output average current limitingProgrammable input UVLO and soft-startPower good and output overvoltage protectionAvailable in HTSSOP-28 packageCreate a custom design using the LM5176-Q1 with theWEBENCH Power DesignerAEC-Q100 qualified for automotive applicationsTemperature grade 1: -40°C to 125°C TAFunctional Safety-CapableDocumentation available to aid functional safety system designSingle inductor buck-boost controller for step-up/step-down DC/DC conversionWide VIN: 4.2 V (2.5 V with bias) to 55 V (60 V maximum)Flexible VOUT: 0.8 V to 55 VVOUTshort protectionHigh efficiency buck-boost transitionAdjustable switching frequencyOptional frequency sync and ditheringIntegrated 2-A MOSFET gate driversCycle-by-cycle current limit and optional hiccupOptional input or output average current limitingProgrammable input UVLO and soft-startPower good and output overvoltage protectionAvailable in HTSSOP-28 packageCreate a custom design using the LM5176-Q1 with theWEBENCH Power Designer

Description

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. 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.