Integrated Circuits (ICs)

LM5019MR/NOPB

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

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Search across all available documentation for this part.

DocumentsLM5019 100-V, 100-mA Constant On-Time Synchronous Buck / Fly-Buck™ Regulator datasheet (Rev. H)LM26420-Q1 Functional Safety FIT Rate and Failure Mode Distribution +16

Integrated Circuits (ICs)

LM5019MR/NOPB

Active

Texas Instruments

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

Deep-Dive with AI

DocumentsLM5019 100-V, 100-mA Constant On-Time Synchronous Buck / Fly-Buck™ Regulator datasheet (Rev. H)LM26420-Q1 Functional Safety FIT Rate and Failure Mode Distribution +16

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM5019MR/NOPB

Current - Output	100 mA
Frequency - Switching	Adj to 1MHz
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	8-PowerSOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SO PowerPad
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	100 V
Voltage - Input (Min) [Min]	7.5 V
Voltage - Output (Max) [Max]	90 V
Voltage - Output (Min/Fixed)	1.225 V

LM5019 Series

Part	Voltage - Output	Current - Output	Outputs and Type	Outputs and Type	Utilized IC / Part	Frequency - Switching	Voltage - Input [Max]	Voltage - Input [Min]	Supplied Contents	Main Purpose	Board Type	Regulator Topology	Voltage - Input (Min) [Min]	Package / Case	Frequency - Switching	Supplier Device Package	Mounting Type	Function	Voltage - Output (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Output Configuration	Output Type	Number of Outputs	Voltage - Input (Max) [Max]	Topology	Voltage - Output (Min/Fixed)	Package / Case [y]	Package / Case [x]	Voltage - Output [Min]	Voltage - Output [Max]
Texas Instruments LM5019EVAL/NOPB	10 V	100 mA	Non-Isolated	1	LM5019	440 kHz	100 V	12.5 V	Board(s)	DC/DC Step Down	Fully Populated	Buck
Texas Instruments LM5019SD/NOPB		100 mA											7.5 V	8-WDFN Exposed Pad	Adj to 1MHz	8-WSON (4x4)	Surface Mount	Step-Down	90 V	-40 °C	125 ¯C	Positive	Adjustable	1	100 V	Buck	1.225 V
Texas Instruments LM5019MR/NOPB		100 mA											7.5 V	8-PowerSOIC	Adj to 1MHz	8-SO PowerPad	Surface Mount	Step-Down	90 V	-40 °C	125 ¯C	Positive	Adjustable	1	100 V	Buck	1.225 V	3.9 mm	0.154 in
Texas Instruments LM5019MRX/NOPB		100 mA											7.5 V	8-PowerSOIC	Adj to 1MHz	8-SO PowerPad	Surface Mount	Step-Down	90 V	-40 °C	125 ¯C	Positive	Adjustable	1	100 V	Buck	1.225 V	3.9 mm	0.154 in
Texas Instruments LM5019ISOEVAL/NOPB		100 mA		1 1	LM5019	750 kHz	100 V	20 VDC	Board(s)	DC/DC Step Down	Fully Populated	Buck																		9.5 V	10 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 3.07
		10	$ 2.76
		95	$ 2.26
		285	$ 2.15
		570	$ 1.92
		1045	$ 1.62
		2565	$ 1.54
		5035	$ 1.48
Texas Instruments	TUBE	1	$ 2.32
		100	$ 2.03
		250	$ 1.43
		1000	$ 1.15

Description

General part information

LM5019 Series

The LM5019 is a 100-V, 100-mA synchronous step-down regulator with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5019 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 start-up 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 LM5019 device is available in WSON-8 and SO PowerPAD-8 plastic packages.