LM5018MRX/NOPB

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Texas Instruments

7.5-100V WIDE VIN, 300MA CONSTANT ON-TIME SYNCHRONOUS BUCK REGULATOR

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LM5018MRX/NOPB

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Texas Instruments

7.5-100V WIDE VIN, 300MA CONSTANT ON-TIME SYNCHRONOUS BUCK REGULATOR

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM5018 Series

The LM5018 is a 100-V, 300-mA synchronous step-down regulator with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5018 device requires no loop compensation, provides excellent transient response, and enables very low step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high-voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.

A peak current limit circuit protects against overload conditions. The undervoltage lockout (UVLO) circuit allows the input undervoltage threshold and hysteresis to be independently programmed. Other protection features include thermal shutdown and bias supply undervoltage lockout.

The LM5018 device is available in WSON-8 and SO PowerPAD-8 plastic packages.

Technical Specifications

Parameters and characteristics for this part

Specification	LM5018MRX/NOPB

Current - Output	300 mA
Frequency - Switching	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive, Isolation Capable
Output Type	Adjustable
Package Length	0.154 in
Package Name	8-SO PowerPad, 8-PowerSOIC
Package Width	3.9 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	100 V p-p
Voltage - Input (Min)	7.5 V
Voltage - Output (Max)	90 V
Voltage - Output (Min/Fixed)	1.225 V

LM5018 Series

Part	Board Type	Total Output Count	Output Type	Non-Isolated Output Count	Supplied Contents	Contents	Voltage - Output	Frequency - Switching	Utilized IC / Part	Regulator Topology	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Current - Output	Main Purpose	Isolated Output Count	Number of Outputs	Output Configuration	Package Width	Package Name	Package Length	Synchronous Rectifier	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Max)	Voltage - Output (Min/Fixed)	Topology	Voltage - Input (Min)	Function	Mounting Type	Voltage - Input (Max)	Package / Case
Texas Instruments LM5018EVAL/NOPB	Fully Populated	1	Non-Isolated	1 count	Board(s)	Board	10 V	440 kHz	LM5018	Buck	12.5 V	100 V	300 mA	DC/DC Step Down
Texas Instruments LM5018ISOEVAL/NOPB	Fully Populated	2	Isolated Non-Isolated	1 count	Board(s)	Board	9.5 V 10 V	750 kHz	LM5018	Buck	20 V	100 V	250 mA	DC/DC Step Down	1
Texas Instruments LM5018MR/NOPB			Adjustable					1 MHz					300 mA			1	Isolation Capable Positive	3.9 mm	8-PowerSOIC 8-SO PowerPad	0.154 in	Yes	125 °C	-40 °C	90 V	1.225 V	Buck	7.5 V	Step-Down	Surface Mount	100 V p-p
Texas Instruments LM5018SDX/NOPB			Adjustable					1 MHz					300 mA			1	Isolation Capable Positive	4 mm	8-WSON	4 mm	Yes	125 °C	-40 °C	90 V	1.225 V	Buck	7.5 V	Step-Down	Surface Mount	100 V p-p	8-WDFN Exposed Pad
Texas Instruments LM5018MRX/NOPB			Adjustable					1 MHz					300 mA			1	Isolation Capable Positive	3.9 mm	8-PowerSOIC 8-SO PowerPad	0.154 in	Yes	125 °C	-40 °C	90 V	1.225 V	Buck	7.5 V	Step-Down	Surface Mount	100 V p-p
Texas Instruments LM5018SD/NOPB			Adjustable					1 MHz					300 mA			1	Isolation Capable Positive	4 mm	8-WSON	4 mm	Yes	125 °C	-40 °C	90 V	1.225 V	Buck	7.5 V	Step-Down	Surface Mount	100 V p-p	8-WDFN Exposed Pad