1 Features
1• LM26001-Q1 is an Automotive-Grade Product that
is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
Operating Junction Temperature)
• High-Efficiency Sleep Mode
• 40-μA Typical Iq in Sleep Mode
• 10-μA Typical Iq in Shutdown Mode
• 3.0-V Minimum Input Voltage
• 4.0-V to 38-V Continuous Input Range
• 1.5% 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

2 Applications
• Automotive Telematics
• Navigation Systems
• In-Dash Instrumentation
• Battery-Powered Applications
• Standby Power for Home Gateways/Set-top
Boxes

3 Description
The LM26001 is a switching regulator designed for
the high-efficiency requirements of applications with
standby 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 LM26001 can deliver up to 1.5 A of continuous
load current with a fixed current limit, through the
internal N-channel switch. The part has a wide input
voltage range of 4.0 V to 38 V and can operate with
input voltages as low as 3 V 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 undervoltage protection, and
an internal bootstrap diode for reduced component
count.