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

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

Datasheet

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

Featured Application Notes

Title		Size	Date	Other Language
	AN-1454: Application Note 1454 LM26001 Evaluation Board	794 Kbytes	1-Sep-06

More Application Notes

Title		Size	Date	Other Language
	AN-1454: Application Note 1454 LM26001 Evaluation Board	794 Kbytes	1-Sep-06

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM26001BMH	ABCD150	0	34175	0	0	4234000	1	1201409060
LM26001BMHX	ABCD150	0	34175	0	0	4234000	1	1201409060

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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