Texas Instruments LM26003

Description

The LM26003 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 10.8 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode.The LM26003 can deliver up to 3A 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 38V 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.

Features

• LM26003Q 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
• 10.8 µA Typical Iq in Shutdown Mode
• 3.0V Minimum Input Voltage
• 4.0V to 38V 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
• TSSOP-20 Package
• Thermal Shut Down

Typical applications

• Stand-by Power for Home Gateways/Set-top
• Automotive Telematics
• Battery Powered Applications
• Navigation Systems

More information

• Datasheet
• IC product information