LM73605-Q1 Series

Automotive qualified 3.5-V to 36-V, 5-A synchronous step-down voltage converter

Catalog

Automotive qualified 3.5-V to 36-V, 5-A synchronous step-down voltage converter

Part	Voltage - Output (Min/Fixed)	Grade	Mounting Type	Output Type	Voltage - Output (Max) [Max]	Topology	Number of Outputs	Qualification	Output Configuration	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Min) [Min]	Package / Case	Current - Output	Function	Voltage - Input (Max) [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Frequency - Switching	Voltage - Input [Max]	Voltage - Input [Min]	Main Purpose	Supplied Contents	Board Type	Utilized IC / Part	Outputs and Type	Outputs and Type	Voltage - Output	Regulator Topology
Texas Instruments LM73605QRNPRQ1	1 V	Automotive	Surface Mount Wettable Flank	Adjustable	34.2 V	Buck	1	AEC-Q100	Positive	30-WQFN (6x4)	-40 °C	125 ¯C	3.5 V	30-WFQFN Exposed Pad	5 A	Step-Down	36 V	2.2 MHz	350 kHz
Texas Instruments LM73605EVM-5V-400K															5 A					400 kHz	36 V	6 V	DC/DC Step Down	Board(s)	Fully Populated	LM73605	Non-Isolated	1	5 V	Buck
Texas Instruments LM73605QURNPRQ1	1 V	Automotive	Surface Mount Wettable Flank	Adjustable	34.2 V	Buck	1	AEC-Q100	Positive	30-WQFN (6x4)	-40 °C	125 ¯C	3.5 V	30-WFQFN Exposed Pad	5 A	Step-Down	36 V	2.2 MHz	350 kHz
Texas Instruments LM73605RNPR	1 V		Surface Mount Wettable Flank	Adjustable	34.2 V	Buck	1		Positive	30-WQFN (6x4)	-40 °C	125 ¯C	3.5 V	30-WFQFN Exposed Pad	5 A	Step-Down	36 V	2.2 MHz	350 kHz
Texas Instruments LM73605QRNPTQ1	1 V	Automotive	Surface Mount Wettable Flank	Adjustable	34.2 V	Buck	1	AEC-Q100	Positive	30-WQFN (6x4)	-40 °C	125 ¯C	3.5 V	30-WFQFN Exposed Pad	5 A	Step-Down	36 V	2.2 MHz	350 kHz

Catalog

Automotive qualified 3.5-V to 36-V, 5-A synchronous step-down voltage converter

Key Features

• AEC-Q100-qualified for automotive applicationsDevice temperature grade 1: –40°C to +125°C ambient operating temperatureDevice HBM ESD classification level 2 kVDevice CDM ESD classification level C5Wettable flanks QFN package (WQFN)Low EMI and low switching noiseLow quiescent current0.8 µA in shutdown (typical)15 µA in active mode with no load (typical)Wide voltage conversion range:tON-MIN= 60 ns (typical)tOFF-MIN= 70 ns (typical)Low MOSFET ON-resistance:RDS_ON_HS= 53 mΩ (typical)RDS_ON_LS= 31 mΩ (typical)Adjustable frequency range: 350 kHz to 2.2 MHzPin-selectable auto mode or forced PWM modeStart-up into pre-biased load, fixed or adjustable soft-start time, and trackingSynchronizable to external clock, internal compensation, power-good flag, and precision enableCycle-by-cycle current limiting, hiccup, UVLO, and thermal shutdown protectionsCreate a custom design with the WEBENCH power designer usingLM73605-Q1orLM73606-Q1AEC-Q100-qualified for automotive applicationsDevice temperature grade 1: –40°C to +125°C ambient operating temperatureDevice HBM ESD classification level 2 kVDevice CDM ESD classification level C5Wettable flanks QFN package (WQFN)Low EMI and low switching noiseLow quiescent current0.8 µA in shutdown (typical)15 µA in active mode with no load (typical)Wide voltage conversion range:tON-MIN= 60 ns (typical)tOFF-MIN= 70 ns (typical)Low MOSFET ON-resistance:RDS_ON_HS= 53 mΩ (typical)RDS_ON_LS= 31 mΩ (typical)Adjustable frequency range: 350 kHz to 2.2 MHzPin-selectable auto mode or forced PWM modeStart-up into pre-biased load, fixed or adjustable soft-start time, and trackingSynchronizable to external clock, internal compensation, power-good flag, and precision enableCycle-by-cycle current limiting, hiccup, UVLO, and thermal shutdown protectionsCreate a custom design with the WEBENCH power designer usingLM73605-Q1orLM73606-Q1

Description

The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product,LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See thedevice comparison tableto compare specifications.Start a Webench designwith LM61460-Q1. Use theLMZM33606module for faster time to market. The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product,LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See thedevice comparison tableto compare specifications.Start a Webench designwith LM61460-Q1. Use theLMZM33606module for faster time to market.