Features • Wide 6V to 75V Input Voltage Range • Valley Current Limiting At 1.25A • Programmable Switching Frequency Up To 1 MHz • Integrated 80V N-Channel Buck Switch • Integrated High Voltage Bias Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Nearly Constant Operating Frequency With Line and Load Variations • Adjustable Output Voltage • 2.5V, ±2% Feedback Reference • Programmable Soft-Start • Thermal shutdown • LM5010AQ is AEC-Q100 Grade 1 & 0 qualified Description The LM5010A Step Down Switching Regulator is an enhanced version of the LM5010 with the input operating range extended to 6V minimum. The LM5010A features all the functions needed to implement a low cost, efficient, buck regulator capable of supplying in excess of 1A load current. This high voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced LLP-10 and TSSOP-14EP packages. The constant on-time regulation scheme requires no loop compensation resulting in fast load transient response and simplified 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 valley current limit detection is set at 1.25A. Additional features include: VCC under-voltage lock-out, thermal shutdown, gate drive under-voltage lock-out, and maximum duty cycle limiter.

LM5010A   6.00 <= V in Lower  V   <= V in Upper  V   <= 75.00 V out 2.50 <=  V <= 75.00 I out    A <= 1.00 Ambient Temperature  °C <= 100 What are WEBENCH® tools? Also Recommended LM5005▲ Higher Current (2.5A) High Voltage (80V) Switching Reg With Softstart LM5007▲ 80V 0.5A Step Down Switching Regulator LM5008▲ 100V 0.35A Step Down Switching Regulator LM5010▲ Lower Max Temperature 125 Deg C And Higher Input Voltage 8V LM5115 80V Sync Buck Controller (Iout 2A Up To 20A) MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance *click for larger image

Datasheet

Title		Size	Date	Other Language
	LM5010A/LM5010AQ High Voltage 1A Step Down Switching Regulator	406 Kbytes	2-Dec-08

Featured Application Notes

Title		Size	Date	Other Language
	AN-1423: Application Note 1423 LM5010A Evaluation Board	643 Kbytes	4-Dec-05
	AN-1481: Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs	574 Kbytes	27-Sep-06	日本語 中文

More Application Notes

Title		Size	Date	Other Language
	AN-1352: Application Note 1352 LM5010 Evaluation Board	591 Kbytes	2-Dec-04

Design Tools

Title	Size	Date
LM5010A Quick Start Calculator	363 Kbytes	23-Jul-2009

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5010AMH	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010AMHX	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010AQ0MH	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010AQ0MHX	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010AQ1MH	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010AQ1MHX	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010ASD	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5010ASDX	ABCD150XV1	0	3868	0	0	2595000	2	736338335

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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