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LM26001B

Texas Instruments
Part Number LM26001B
Manufacturer Texas Instruments
Description 1.5A Switching Regulator
Published Feb 21, 2020
Detailed Description LM26001B www.ti.com SNVS491B – MAY 2007 – REVISED APRIL 2013 LM26001B 1.5A Switching Regulator with High Efficiency S...
Datasheet PDF File LM26001B PDF File

LM26001B
LM26001B

Overview
LM26001B www.
ti.
com SNVS491B – MAY 2007 – REVISED APRIL 2013 LM26001B 1.
5A Switching Regulator with High Efficiency Sleep Mode Check for Samples: LM26001B FEATURES 1 •2 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 • HTSSOP-16 Exposed Pad Package • Thermal Shut Down APPLICATIONS • Automotive Telematics • Navigation Systems • In-Dash Instrumentation • Battery Powered Applications • Stand-by Power for Home Gateways/Set-Top Boxes 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 softstart, enable pin, input under-voltage protection, and an internal bootstrap diode for reduced component count.
Typical Application Circuit VIN C1 R4 VDD EN SYNC R6 C5 R3 1 VIN 2 VIN 12 VBIAS 16 SW 3 PGOOD 15 SW 4 EN 14 BOOT 11 LM26001B 7 SYNC FB 5 SS COMP 6 9 FREQ 13 VDD 10 FPWM EP 8 GND 17 L C4 D1 C8 C3 R5 VOUT + ...


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