LM25007 Series

9-42V Wide Vin, 0.5A, Constant On-Time Non-Synchronous Buck Regulator

Catalog

9-42V Wide Vin, 0.5A, Constant On-Time Non-Synchronous Buck Regulator

Part	Voltage - Input (Min) [Min]	Supplier Device Package	Mounting Type	Voltage - Input (Max) [Max]	Output Type	Function	Number of Outputs	Voltage - Output (Max)	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Min/Fixed)	Output Configuration	Frequency - Switching [Max]	Topology	Current - Output	Package / Case [custom]	Package / Case
Texas Instruments LM25007SD/NOPB	9 V	8-WSON (4x4)	Surface Mount	42 V	Adjustable	Step-Down	1	37 V	8-WDFN Exposed Pad	-40 °C	125 ¯C	2.5 V	Positive	800 kHz	Buck	500 mA
Texas Instruments LM25007MM/NOPB	9 V		Surface Mount	42 V	Adjustable	Step-Down	1	37 V	8-MSOP 8-TSSOP	-40 °C	125 ¯C	2.5 V	Positive	800 kHz	Buck	500 mA	0.118 in	3 mm
Texas Instruments LM25007SDX/NOPB	9 V	8-WSON (4x4)	Surface Mount	42 V	Adjustable	Step-Down	1	37 V	8-WDFN Exposed Pad	-40 °C	125 ¯C	2.5 V	Positive	800 kHz	Buck	500 mA
Texas Instruments LM25007MMX	9 V		Surface Mount	42 V	Adjustable	Step-Down	1	37 V	8-MSOP 8-TSSOP	-40 °C	125 ¯C	2.5 V	Positive	800 kHz	Buck	500 mA	0.118 in	3 mm
Texas Instruments LM25007SDX	9 V	8-WSON (4x4)	Surface Mount	42 V	Adjustable	Step-Down	1	37 V	8-WDFN Exposed Pad	-40 °C	125 ¯C	2.5 V	Positive	800 kHz	Buck	500 mA
Texas Instruments LM25007SD	9 V	8-WSON (4x4)	Surface Mount	42 V	Adjustable	Step-Down	1	37 V	8-WDFN Exposed Pad	-40 °C	125 ¯C	2.5 V	Positive	800 kHz	Buck	500 mA

Catalog

9-42V Wide Vin, 0.5A, Constant On-Time Non-Synchronous Buck Regulator

Key Features

• Integrated 0.74Ω N-Channel MOSFET SwitchGuaranteed 0.5A Output CurrentUltra-Fast Transient ResponseUp to 800kHz OperationNo Control Loop Compensation RequiredVin Feed Forward Provides Constant Operating Frequency2% Accurate 2.5V Feedback from -40°C to 125°CHighly Efficient OperationIntelligent Current Limit ProtectionExternal Shutdown ControlThermal ShutdownVSSOP and Thermally Enhanced WSON PackagesIntegrated 0.74Ω N-Channel MOSFET SwitchGuaranteed 0.5A Output CurrentUltra-Fast Transient ResponseUp to 800kHz OperationNo Control Loop Compensation RequiredVin Feed Forward Provides Constant Operating Frequency2% Accurate 2.5V Feedback from -40°C to 125°CHighly Efficient OperationIntelligent Current Limit ProtectionExternal Shutdown ControlThermal ShutdownVSSOP and Thermally Enhanced WSON Packages

Description

The LM25007 is a monolithic step-down switching regulator featuring all of the functions needed to implement a low cost, efficient, power supply. Capable of driving a 0.5A load over a 9V-42V input voltage range, this device is easy to apply and is provided in the small VSSOP-8 and the thermally enhanced WSON-8 packages. Ultra-fast transient response is achieved through the use of a constant on-time architecture with Vin feed forward. This feature provides an almost constant operating frequency over load and input voltage variations. The operating frequency can be adjusted with a single resistor. This architecture is easy to use and tolerant of component selection. An intelligent current limit is implemented in the LM25007 with forced off time that is inversely proportional to Vout thus ensuring recovery from fault conditions. The output voltage may be set from 2.5V to >30V. To improve efficiency in light load applications, the Vcc pin can be connected to an external voltage source to eliminate the drop through the internal regulator. Additional features include: thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and max duty cycle limiter. The LM25007 is a monolithic step-down switching regulator featuring all of the functions needed to implement a low cost, efficient, power supply. Capable of driving a 0.5A load over a 9V-42V input voltage range, this device is easy to apply and is provided in the small VSSOP-8 and the thermally enhanced WSON-8 packages. Ultra-fast transient response is achieved through the use of a constant on-time architecture with Vin feed forward. This feature provides an almost constant operating frequency over load and input voltage variations. The operating frequency can be adjusted with a single resistor. This architecture is easy to use and tolerant of component selection. An intelligent current limit is implemented in the LM25007 with forced off time that is inversely proportional to Vout thus ensuring recovery from fault conditions. The output voltage may be set from 2.5V to >30V. To improve efficiency in light load applications, the Vcc pin can be connected to an external voltage source to eliminate the drop through the internal regulator. Additional features include: thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and max duty cycle limiter.