Features High efficiency sleep mode 40 µA typical Iq in sleep mode 10 µA typical Iq in shutdown mode 3.0V minimum input voltage 4.0V to 18V continuous input range 2.0% reference accuracy Cycle-by-cycle current limit Adjustable Frequency (150 kHz to 500 kHz) Synchronizable to an external clock Power Good Flag Forced PWM function Adjustable Soft-start TSSOP-16 exposed pad package Thermal Shut Down Description The LM26001B is a switching regulator designed for the high efficiency requirements of applications with stand-by modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode control for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode. The LM26001B can deliver up to 1.5A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0V to 18V and can operate with input voltages as low as 3V during line transients. Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock. Other features include Power good, adjustable soft-start, enable pin, input under-voltage protection, and an internal bootstrap diode for reduced component count. Applications Automotive Telematics Navigation systems In-Dash Instrumentation Battery Powered Applications Stand-by power for home gateways/set-top boxes

Typical Application *click for larger image	Block Diagram *click for larger image
Typical Performance *click for larger image Efficiency vs Load Current at 330kHz

Datasheets

Title		Size	Date	Other Language
	LM26001B 1.5A Switching Regulator with High Efficiency Sleep Mode	481 Kbytes	29-May-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM26001BMH/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 169 MOUSER Worldwide 184 RS COMPONENTS Worldwide 3	$2.35 each at 1K+ pcs	rail of 92
LM26001BMHX/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$2.35 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM26001B.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM26001B is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM26001BMH/NOPB	56.396	TSSOP EXP PAD	16	1	260	Detail	N/A	N/A	NSUZXYTT L26001 BMH
LM26001BMHX/NOPB	56.396	TSSOP EXP PAD	16	1	260	Detail	N/A	N/A	NSUZXYTT L26001 BMH

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM26001B.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM26001B is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM26001BMH	ABCD150	0	42680	0	0	6394000	1	1814314958
LM26001BMHX	ABCD150	0	42680	0	0	6394000	1	1814314958

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.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM26001B.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM26001B is located at RoHS Status.