LM34910SD/NOPB

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Texas Instruments

8-36V, 1.25A CONSTANT ON-TIME NON-SYNCHRONOUS BUCK REGULATOR

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LM34910SD/NOPB

Active

Texas Instruments

8-36V, 1.25A CONSTANT ON-TIME NON-SYNCHRONOUS BUCK REGULATOR

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM34910 Series

The LM34910C Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.25A to the load. This buck regulator contains a 55V N-Channel Buck Switch, and is available in the thermally enhanced WSON-10 package. The hysteretic 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 current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.

Technical Specifications

Parameters and characteristics for this part

Specification	LM34910SD/NOPB

Current - Output	1.25 A
Function	Step-Down
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-WDFN Exposed Pad
Package Length	4 mm
Package Name	10-WSON
Package Width	4 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	36 V
Voltage - Input (Min)	8 V
Voltage - Output (Max)	33 V
Voltage - Output (Min/Fixed)	2.5 V

LM34910 Series

8-50V, 1.25A Constant On-Time Non-Synchronous Buck Regulator

Part	Output Type	Package / Case	Topology	Voltage - Output (Max)	Package Length	Package Name	Package Width	Operating Temperature (Max)	Operating Temperature (Min)	Number of Outputs	Synchronous Rectifier	Voltage - Input (Max)	Output Configuration	Current - Output	Voltage - Output (Min/Fixed)	Function	Mounting Type	Voltage - Input (Min)
Texas Instruments LM34910SDX/NOPB	Adjustable	10-WDFN Exposed Pad	Buck	33 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	36 V	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V
Texas Instruments LM34910SD/NOPB	Adjustable	10-WDFN Exposed Pad	Buck	33 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	36 V	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V
Texas Instruments LM34910CSD/NOPB	Adjustable	10-WDFN Exposed Pad	Buck	45 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	50 V p-p	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V
Texas Instruments LM34910SDX	Adjustable	10-WDFN Exposed Pad	Buck	33 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	36 V	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V
Texas Instruments LM34910SD	Adjustable	10-WDFN Exposed Pad	Buck	33 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	36 V	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V
Texas Instruments LM34910CSDX/NOPB	Adjustable	10-WDFN Exposed Pad	Buck	45 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	50 V p-p	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V
Texas Instruments LM34910CSDE/NOPB	Adjustable	10-WDFN Exposed Pad	Buck	45 V	4 mm	10-WSON	4 mm	125 °C	-40 °C	1	No	50 V p-p	Positive	1.25 A	2.5 V	Step-Down	Surface Mount	8 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Power Management Guide 2018 (Rev. R)

AN-1349 LM34910 Evaluation Board (Rev. A)

LM34910 High Voltage (40V, 1.25A) Step Down Switching Regulator datasheet (Rev. B)

Power Management Guide