LM5141-Q1 Series

Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Catalog

Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Part	Output Phases	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Number of Outputs	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Control Features	Function	Frequency - Switching	Mounting Type	Package / Case	Output Configuration	Grade	Qualification	Output Type	Voltage - Input [Max]	Voltage - Input [Min]	Supplied Contents	Regulator Topology	Current - Output	Voltage - Output	Outputs and Type	Outputs and Type	Utilized IC / Part	Main Purpose	Board Type
Texas Instruments LM5141QRGETQ1	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver
Texas Instruments LM5141QURGERQ1	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver
Texas Instruments LM5141QRGERQ1	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver
Texas Instruments LM5141QRGEVM											2.2 MHz							42 V	5.5 V	Board(s)	Buck	5 A	5 V	Non-Isolated	1	LM5141-Q1	DC/DC Step Down	Fully Populated
Texas Instruments LM5141RGET	1	150 °C	-40 °C	Buck	1	24-VQFN (4x4)	65 V	3.8 V	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	2.2 MHz 440 kHz	Surface Mount	24-VFQFN Exposed Pad	Positive	Automotive	AEC-Q100	Transistor Driver

Catalog

Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C4BVIN: 3.8 V to 65 V (70 V Absolute Maximum)Output: Fixed 3.3 V, 5 V, or Adjustable From1.5 V to 15 V with ±0.8% AccuracyFixed 2.2-MHz or 440-kHz Switching Frequency with ±5% AccuracyHigh-Side and Low-Side Gate Drive With Slew-Rate ControlOptional Frequency Shift by Varying an Analog Voltage or RT ResistorOptional Synchronization to an External ClockOptional Spread SpectrumShutdown Mode IQ: 10 µA TypicalLow Standby Mode IQ: 35 µA Typical75-mV Current Limit Threshold with ±0.9% AccuracyExternal Resistor or DCR Current SensingOutput Enable Logic InputHiccup Mode for Sustained OverloadPower-Good Indication OutputSelectable Diode Emulation or Forced Pulse-Width Modulation24-pin VQFN Package With Wettable FlanksCreate a Custom Design Using the LM5141-Q1 With theWEBENCH®Power DesignerQualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C4BVIN: 3.8 V to 65 V (70 V Absolute Maximum)Output: Fixed 3.3 V, 5 V, or Adjustable From1.5 V to 15 V with ±0.8% AccuracyFixed 2.2-MHz or 440-kHz Switching Frequency with ±5% AccuracyHigh-Side and Low-Side Gate Drive With Slew-Rate ControlOptional Frequency Shift by Varying an Analog Voltage or RT ResistorOptional Synchronization to an External ClockOptional Spread SpectrumShutdown Mode IQ: 10 µA TypicalLow Standby Mode IQ: 35 µA Typical75-mV Current Limit Threshold with ±0.9% AccuracyExternal Resistor or DCR Current SensingOutput Enable Logic InputHiccup Mode for Sustained OverloadPower-Good Indication OutputSelectable Diode Emulation or Forced Pulse-Width Modulation24-pin VQFN Package With Wettable FlanksCreate a Custom Design Using the LM5141-Q1 With theWEBENCH®Power Designer

Description

The LM5141-Q1 is a synchronous buck controller, intended for high voltage wide VINstep-down converter applications. The control method is peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The LM5141-Q1 features slew rate control to simplify the compliance with CISPR and automotive EMI requirements. The LM5141-Q1 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate drivers with slew rate Control that can be adjusted to reduce EMI. In light or no-load conditions, the LM5141-Q1 operates in skip cycle mode for improved low power efficiency. The LM5141-Q1 has a high voltage bias regulator with automatic switch-over to an external bias to reduce the IQcurrent from VIN. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overload, and power good output. The LM5141-Q1 is a synchronous buck controller, intended for high voltage wide VINstep-down converter applications. The control method is peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The LM5141-Q1 features slew rate control to simplify the compliance with CISPR and automotive EMI requirements. The LM5141-Q1 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate drivers with slew rate Control that can be adjusted to reduce EMI. In light or no-load conditions, the LM5141-Q1 operates in skip cycle mode for improved low power efficiency. The LM5141-Q1 has a high voltage bias regulator with automatic switch-over to an external bias to reduce the IQcurrent from VIN. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overload, and power good output.