Integrated Circuits (ICs)

LM34919BQTLX/NOPB

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AUTOMOTIVE 2X1.75MM, 6-40V WIDE VIN, 600MA, 2.6MHZ CONSTANT ON-TIME NON-SYNCHRONOUS BUCK REGULATOR

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Search across all available documentation for this part.

DocumentsLM34919B Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator datasheet (Rev. B)AN-2016 LM34919B Evaluation Board (Rev. A)

Integrated Circuits (ICs)

LM34919BQTLX/NOPB

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Texas Instruments

AUTOMOTIVE 2X1.75MM, 6-40V WIDE VIN, 600MA, 2.6MHZ CONSTANT ON-TIME NON-SYNCHRONOUS BUCK REGULATOR

Deep-Dive with AI

DocumentsLM34919B Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator datasheet (Rev. B)AN-2016 LM34919B Evaluation Board (Rev. A)

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM34919BQTLX/NOPB

Current - Output	600 mA
Frequency - Switching	2.6 MHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	10-WFBGA
Qualification	AEC-Q100
Supplier Device Package	10-DSBGA
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Min) [Min]	6 V
Voltage - Output (Max) [Max]	35 V
Voltage - Output (Min/Fixed)	2.5 V

LM34919C-Q1 Series

Automotive 4.5-50V Wide Vin 600mA 2.6MHz Ultra-Small Constant On-Time Non-Synchronous Buck Regulator

Part	Function	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching	Topology	Voltage - Output (Max) [Max]	Current - Output	Voltage - Input (Min) [Min]	Mounting Type	Package / Case	Supplier Device Package	Number of Outputs	Output Type	Output Configuration	Voltage - Output (Min/Fixed)	Qualification	Grade	Voltage - Input (Max) [Max]	Voltage - Output	Utilized IC / Part	Regulator Topology	Board Type	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]	Supplied Contents	Main Purpose	Supplier Device Package [y]	Supplier Device Package [x]
Texas Instruments LM34919TLX/NOPB	Step-Down	-40 °C	125 ¯C	2 MHz	Buck	35 V	600 mA	8 V	Surface Mount	10-WFBGA	10-DSBGA	1	Adjustable	Positive	2.5 V
Texas Instruments LM34919CQSDX/NOPB	Step-Down	-40 °C	125 ¯C	2.6 MHz	Buck	45 V	600 mA	4.5 V	Surface Mount	12-WFDFN Exposed Pad	12-WSON (4x4)	1	Adjustable	Positive	2.5 V	AEC-Q100	Automotive	50 V
Texas Instruments LM34919TL/NOPB	Step-Down	-40 °C	125 ¯C	2 MHz	Buck	35 V	600 mA	8 V	Surface Mount	10-WFBGA	10-DSBGA	1	Adjustable	Positive	2.5 V
Texas Instruments LM34919BEVAL/NOPB				1.5 MHz			600 mA												3.3 V	LM34919B	Buck	Fully Populated	Non-Isolated	1	6 V	24 V	Board(s)	DC/DC Step Down
Texas Instruments LM34919BTL/NOPB	Step-Down	-40 °C	125 ¯C	2.6 MHz	Buck	35 V	600 mA	6 V	Surface Mount	10-WFBGA	10-DSBGA	1	Adjustable	Positive	2.5 V
Texas Instruments LM34919CQTL/NOPB	Step-Down	-40 °C	125 ¯C	2.6 MHz	Buck	45 V	600 mA	4.5 V	Surface Mount	12-WFBGA DSBGA	12-DSBGA	1	Adjustable	Positive	2.5 V	AEC-Q100	Automotive	50 V											2.5	2
Texas Instruments LM34919CQSDEVM				1.5 MHz			600 mA												3.3 V	LM34919C-Q1	Buck	Fully Populated	Non-Isolated	1			Board(s)	DC/DC Step Down
Texas Instruments LM34919BQTLX/NOPB	Step-Down	-40 °C	125 ¯C	2.6 MHz	Buck	35 V	600 mA	6 V	Surface Mount	10-WFBGA	10-DSBGA	1	Adjustable	Positive	2.5 V	AEC-Q100	Automotive
Texas Instruments LM34919CQSD/NOPB	Step-Down	-40 °C	125 ¯C	2.6 MHz	Buck	45 V	600 mA	4.5 V	Surface Mount	12-WFDFN Exposed Pad	12-WSON (4x4)	1	Adjustable	Positive	2.5 V	AEC-Q100	Automotive	50 V
Texas Instruments LM34919BTLX/NOPB	Step-Down	-40 °C	125 ¯C	2.6 MHz	Buck	35 V	600 mA	6 V	Surface Mount	10-WFBGA	10-DSBGA	1	Adjustable	Positive	2.5 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 1.92
Texas Instruments	LARGE T&R	1	$ 2.88
		100	$ 2.53
		250	$ 1.77
		1000	$ 1.43

Description

General part information

LM34919C-Q1 Series

The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.

Documents

Technical documentation and resources

LM34919B Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator datasheet (Rev. B)

Data sheet

AN-2016 LM34919B Evaluation Board (Rev. A)

EVM User's guide