LM5008A Series

9.5-95V Wide Vin, 350mA Constant On-Time Non-Synchronous Buck Regulator

Catalog

9.5-95V Wide Vin, 350mA Constant On-Time Non-Synchronous Buck Regulator

Part	Output Type	Number of Outputs	Package / Case	Output Configuration	Topology	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Supplier Device Package	Voltage - Output (Max) [Max]	Function	Current - Output	Frequency - Switching [Max]	Frequency - Switching [Min]	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Board Type	Supplied Contents	Main Purpose	Regulator Topology	Outputs and Type	Outputs and Type	Utilized IC / Part	Voltage - Output	Voltage - Input [Max]	Voltage - Input [Min]	Package / Case [custom]	Package / Case	Frequency - Switching
Texas Instruments LM5008SDX/NOPB	Adjustable	1	8-WDFN Exposed Pad	Positive	Buck	2.5 V	9.5 V	95 V	8-WSON (4x4)	75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C
Texas Instruments LM5008SDC	Adjustable	1	8-WDFN Exposed Pad	Positive	Buck	2.5 V	9.5 V	95 V	8-WSON (4x4)	75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C
Texas Instruments LM5008EVAL												300 mA						Fully Populated	Board(s)	DC/DC Step Down	Buck	Non-Isolated	1	LM5008	10 V	95 V	12 V
Texas Instruments LM5008MM	Adjustable	1	8-MSOP 8-TSSOP	Positive	Buck	2.5 V	9.5 V	95 V		75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C											0.118 in	3 mm
Texas Instruments LM5008SDCX/NOPB	Adjustable	1	8-WDFN Exposed Pad	Positive	Buck	2.5 V	9.5 V	95 V	8-WSON (4x4)	75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C
Texas Instruments LM5008MMX/NOPB	Adjustable	1	8-MSOP 8-TSSOP	Positive	Buck	2.5 V	9.5 V	95 V		75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C											0.118 in	3 mm
Texas Instruments LM5008AEVAL/NOPB												300 mA						Fully Populated	Board(s)	DC/DC Step Down	Buck	Non-Isolated	1	LM5008A	5 V	75 V	8 V			130 kHz
Texas Instruments LM5008MM/NOPB	Adjustable	1	8-MSOP 8-TSSOP	Positive	Buck	2.5 V	9.5 V	95 V		75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C											0.118 in	3 mm
Texas Instruments LM5008SD	Adjustable	1	8-WDFN Exposed Pad	Positive	Buck	2.5 V	9.5 V	95 V	8-WSON (4x4)	75 V	Step-Down	350 mA	600 kHz	50 kHz	Surface Mount	-40 °C	125 ¯C
Texas Instruments LM5008ASD/NOPB	Adjustable	1	8-WDFN Exposed Pad	Positive	Buck	2.5 V	6 V	95 V	8-WSON (4x4)	75 V	Step-Down	350 mA	1.1 MHz	50 kHz	Surface Mount	-40 °C	125 ¯C

Catalog

9.5-95V Wide Vin, 350mA Constant On-Time Non-Synchronous Buck Regulator

Key Features

• Operating Input Voltage Range: 6 V to 95 VIntegrated 100-V N-Channel Buck SwitchInternal Start-Up RegulatorNo Loop Compensation RequiredUltra-Fast Transient ResponseOn-Time Varies Inversely With Input VoltageOperating Frequency Remains Constant With Varying Line Voltage and Load CurrentAdjustable Output Voltage From 2.5 VHighly Efficient OperationPrecision Internal ReferenceLow Bias CurrentIntelligent Current LimitThermal Shutdown8-Pin VSSOP and 8-Pin WSON PackagesCreate a Custom Design Using the LM5008A With theWEBENCH®Power DesignerOperating Input Voltage Range: 6 V to 95 VIntegrated 100-V N-Channel Buck SwitchInternal Start-Up RegulatorNo Loop Compensation RequiredUltra-Fast Transient ResponseOn-Time Varies Inversely With Input VoltageOperating Frequency Remains Constant With Varying Line Voltage and Load CurrentAdjustable Output Voltage From 2.5 VHighly Efficient OperationPrecision Internal ReferenceLow Bias CurrentIntelligent Current LimitThermal Shutdown8-Pin VSSOP and 8-Pin WSON PackagesCreate a Custom Design Using the LM5008A With theWEBENCH®Power Designer

Description

The LM5008A DC/DC converter is a functional variant of the LM5008 COT Buck Switching Regulator. The functional differences of the LM5008A are: the minimum input operating voltage is 6 V, the on-time equation is slightly different, and the requirement for a minimum load current is removed. The LM5008A 350-mA step-down switching regulator features all of the functions required to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 100-V N-channel buck switch and operates over an input voltage range of 6 V to 95 V. The device is easy to implement and is provided in 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The converter uses PWM control scheme with an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short-circuit control while providing minimum foldback. Other features include: thermal shutdown, VCCundervoltage lockout, gate drive undervoltage lockout, maximum duty cycle limiter, and a pre-charge switch. The LM5008A DC/DC converter is a functional variant of the LM5008 COT Buck Switching Regulator. The functional differences of the LM5008A are: the minimum input operating voltage is 6 V, the on-time equation is slightly different, and the requirement for a minimum load current is removed. The LM5008A 350-mA step-down switching regulator features all of the functions required to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 100-V N-channel buck switch and operates over an input voltage range of 6 V to 95 V. The device is easy to implement and is provided in 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The converter uses PWM control scheme with an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short-circuit control while providing minimum foldback. Other features include: thermal shutdown, VCCundervoltage lockout, gate drive undervoltage lockout, maximum duty cycle limiter, and a pre-charge switch.