LM34910C Series

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

Catalog

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

Part	Mounting Type	Voltage - Output (Max) [Max]	Topology	Output Type	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Package / Case	Number of Outputs	Output Configuration	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Voltage - Output (Min/Fixed)	Current - Output	Function
Texas Instruments LM34910SD/NOPB	Surface Mount	33 V	Buck	Adjustable	8 V	36 V	10-WDFN Exposed Pad	1	Positive	-40 °C	125 ¯C	10-WSON (4x4)	2.5 V	1.25 A	Step-Down
Texas Instruments LM34910CSD/NOPB	Surface Mount	45 V	Buck	Adjustable	8 V	50 V	10-WDFN Exposed Pad	1	Positive	-40 °C	125 ¯C	10-WSON (4x4)	2.5 V	1.25 A	Step-Down
Texas Instruments LM34910SDX	Surface Mount	33 V	Buck	Adjustable	8 V	36 V	10-WDFN Exposed Pad	1	Positive	-40 °C	125 ¯C	10-WSON (4x4)	2.5 V	1.25 A	Step-Down
Texas Instruments LM34910SD	Surface Mount	33 V	Buck	Adjustable	8 V	36 V	10-WDFN Exposed Pad	1	Positive	-40 °C	125 ¯C	10-WSON (4x4)	2.5 V	1.25 A	Step-Down
Texas Instruments LM34910CSDE/NOPB	Surface Mount	45 V	Buck	Adjustable	8 V	50 V	10-WDFN Exposed Pad	1	Positive	-40 °C	125 ¯C	10-WSON (4x4)	2.5 V	1.25 A	Step-Down

Catalog

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

Key Features

• Integrated 55V, N-Channel Buck SwitchIntegrated Start-Up RegulatorInput Voltage Range: 8V to 50VNo Loop Compensation RequiredUltra-Fast Transient ResponseOperating Frequency Remains Constant with Load Current and Input VoltageMaximum Duty Cycle Limited During Start-UpAdjustable Output VoltageValley Current Limit At 1.25APrecision Internal ReferenceLow Bias CurrentHighly Efficient OperationThermal ShutdownAll trademarks are the property of their respective owners.Integrated 55V, N-Channel Buck SwitchIntegrated Start-Up RegulatorInput Voltage Range: 8V to 50VNo Loop Compensation RequiredUltra-Fast Transient ResponseOperating Frequency Remains Constant with Load Current and Input VoltageMaximum Duty Cycle Limited During Start-UpAdjustable Output VoltageValley Current Limit At 1.25APrecision Internal ReferenceLow Bias CurrentHighly Efficient OperationThermal ShutdownAll trademarks are the property of their respective owners.

Description

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. 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.