Specification	LM5155DSST

Clock Sync	True
Control Features	Soft Start
Duty Cycle (Max) [Max]	96 %
Frequency - Switching [Max]	2.2 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up, Step-Up/Step-Down
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 / Case	12-WFDFN Exposed Pad
Supplier Device Package	12-WSON (3x2)
Synchronous Rectifier	False
Topology	Flyback, SEPIC, Boost
Voltage - Supply (Vcc/Vdd) [Max]	45 V
Voltage - Supply (Vcc/Vdd) [Min]	2.97 V

LM5155-Q1 Series

2.2-MHz wide VIN, 1.5-A MOSFET driver, non-synchronous boost controller, AEC-Q100 qualified

Part	Outputs and Type	Outputs and Type	Main Purpose	Current - Output	Regulator Topology	Supplied Contents	Utilized IC / Part	Voltage - Output	Board Type	Voltage - Input [Max]	Voltage - Input [Min]	Frequency - Switching	Function	Output Type	Qualification	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Min]	Frequency - Switching [Max]	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Supplier Device Package	Mounting Type	Grade	Output Configuration	Output Phases	Control Features	Package / Case	Duty Cycle (Max) [Max]	Topology
Texas Instruments LM5155EVM-SEPIC	Non-Isolated	1	DC/DC Step Up	2 A	Boost SEPIC	Board(s)	LM5155-Q1	12 V	Fully Populated	18 V	6 V	2.2 MHz
Texas Instruments LM5155QUDSSTQ1													Step-Up Step-Up/Step-Down	Transistor Driver	AEC-Q100	1	-40 °C	125 °C	100 kHz	2.2 MHz	16 V 45 V	2.97 V 3.5 V	12-WSON (3x2)	Surface Mount	Automotive	Positive	1	Current Limit Enable Frequency Control Power Good Soft Start Sync	12-WFDFN Exposed Pad	93 %	Boost Flyback SEPIC
Texas Instruments LM5155DSST													Step-Up Step-Up/Step-Down	Transistor Driver		1	-40 °C	125 ¯C	100 kHz	2.2 MHz	45 V	2.97 V	12-WSON (3x2)	Surface Mount		Positive	1	Soft Start	12-WFDFN Exposed Pad	96 %	Boost Flyback SEPIC
Texas Instruments LM5155DSSR													Step-Up Step-Up/Step-Down	Transistor Driver		1	-40 °C	125 ¯C	100 kHz	2.2 MHz	45 V	2.97 V	12-WSON (3x2)	Surface Mount		Positive	1	Soft Start	12-WFDFN Exposed Pad	93 %	Boost Flyback SEPIC
Texas Instruments LM5155QDSSTQ1													Step-Up Step-Up/Step-Down	Transistor Driver	AEC-Q100	1	-40 °C	150 °C	100 kHz	2.2 MHz	45 V	2.97 V	12-WSON (3x2)	Surface Mount Wettable Flank	Automotive	Positive	1	Soft Start	12-WFDFN Exposed Pad	93 %	Boost Flyback SEPIC
Texas Instruments LM5155QUDSSRQ1													Step-Up Step-Up/Step-Down	Transistor Driver	AEC-Q100	1	-40 °C	125 °C	100 kHz	2.2 MHz	16 V 45 V	2.97 V 3.5 V	12-WSON (3x2)	Surface Mount	Automotive	Positive	1	Current Limit Enable Frequency Control Power Good Soft Start Sync	12-WFDFN Exposed Pad	93 %	Boost Flyback SEPIC
Texas Instruments LM5155EVM-BST	Non-Isolated	1	DC/DC Step Up	2 A	Boost	Board(s)	LM5155	24 V	Fully Populated	18 V	6 V	440 kHz

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.88
		10	$ 2.58
		25	$ 2.44
		100	$ 2.08
	Digi-Reel®	1	$ 2.88
		10	$ 2.58
		25	$ 2.44
		100	$ 2.08
	Tape & Reel (TR)	250	$ 1.95
		500	$ 1.71
		1250	$ 1.41
		2500	$ 1.32
		6250	$ 1.27
Texas Instruments	SMALL T&R	1	$ 2.27
		100	$ 1.88
		250	$ 1.35
		1000	$ 1.01

Description

General part information

LM5155-Q1 Series

The LM5155x-Q1 (LM5155-Q1 and LM51551-Q1) is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

The LM5155x-Q1 can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.

The LM5155x-Q1 (LM5155-Q1 and LM51551-Q1) is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.