Voltage Regulators - Switching Regulators

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LM5157x/LM5157x-Q1 Boost Flyback & SEPIC Converter

Texas Instruments LM5157x/LM5157x-Q1 Boost Flyback & SEPIC Converter is a wide input range, non-synchronous boost converter with integrated 50V, 6.5A (LM5157/LM5157-Q1) or 50V, 4.33A (LM51571-Q1) power switch. The device can be used in boost, SEPIC, and flyback topologies. The Texas Instruments LM5157x/LM5157x-Q1 can start up from a single-cell battery with a minimum of 2.9V. It can operate with the input supply voltage as low as 1.5V if the BIAS pin is greater than 2.9V. The LM5157x-Q1 devices are AEC-Q100 qualified for automotive applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Switching Voltage Regulators 6-A 50-V 2.2-MHz w i de VIN boost flyba LM5157QRTERQ1 Texas Instruments 1: CHF 4.80 1’333In Stock	Mfr. Part No. LM5157QRTERQ1 Mouser Part No 595-LM5157QRTERQ1	Texas Instruments	Switching Voltage Regulators 6-A 50-V 2.2-MHz w i de VIN boost flyba Learn More about Texas Instruments ti lm5157x q1 boost converter	Datasheet	1’333In Stock	Cut Tape CHF 4.80 CHF 3.66 CHF 3.38 CHF 3.07 View Reel CHF 2.68 CHF 2.93 CHF 2.88 CHF 2.86 CHF 2.68 MouseReel Available	Min.: 1 Mult.: 1 : 3’000	SMD/SMT	WQFN-16	Boost, Flyback, SEPIC	12 V	1.6 A	1 Output	670 uA	2.2 MHz	- 40 C	+ 150 C	LM5157	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 6A/4A 50-V 2.2-MHz w ide VIN boost fly LM5157RTER Texas Instruments 1: CHF 3.13 3’103In Stock 3’000Expected 2/1/2027	Mfr. Part No. LM5157RTER Mouser Part No 595-LM5157RTER	Texas Instruments	Switching Voltage Regulators 6A/4A 50-V 2.2-MHz w ide VIN boost fly Learn More about Texas Instruments ti lm5157x q1 boost converter	Datasheet	3’103In Stock 3’000Expected 2/1/2027	Cut Tape CHF 3.13 CHF 2.36 CHF 2.17 CHF 1.96 View Reel CHF 1.80 CHF 1.86 CHF 1.84 CHF 1.80 MouseReel Available	Min.: 1 Mult.: 1 : 3’000	SMD/SMT	WQFN-16	Boost, Flyback, SEPIC	1.5 V to 48 V	7.5 A	1 Output	670 uA	100 kHz to 2.2 MHz	- 40 C	+ 125 C	LM5157	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 6A/4A 50-V 2.2-MHz w ide VIN boost fly LM51571RTER Texas Instruments 1: CHF 3.67 59In Stock 33’000On Order	Mfr. Part No. LM51571RTER Mouser Part No 595-LM51571RTER	Texas Instruments	Switching Voltage Regulators 6A/4A 50-V 2.2-MHz w ide VIN boost fly Learn More about Texas Instruments ti lm5157x q1 boost converter	Datasheet	59In Stock 33’000On Order On Order Ship Dates Mfr. No: LM51571RTER Stock: 59 Can Dispatch Immediately On Order: 12’000 Expected 12/28/2026 21’000 Expected 2/4/2027 Factory Lead Time: 20 Weeks	Cut Tape CHF 3.67 CHF 2.78 CHF 2.56 CHF 2.30 View Reel CHF 1.91 CHF 2.19 CHF 2.18 CHF 2.11 CHF 1.91 MouseReel Available	Min.: 1 Mult.: 1 : 3’000	SMD/SMT	WQFN-16	Boost, Flyback, SEPIC	1.5 V to 48 V	5 A	1 Output	670 uA	100 kHz to 2.2 MHz	- 40 C	+ 125 C	LM5157	Reel, Cut Tape, MouseReel

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LM5157x/LM5157x-Q1 Boost Flyback & SEPIC Converter

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