Features

• Wide Input Voltage Range: 4V to 80V
• Low Quiescent Current: 65µA
• Low Dropout Voltage: 400mV
• Output Current: 250mA
• No Protection Diodes Needed
• Adjustable Output from 1.24V to 60V
• Stable with 3.3µF Output Capacitor
• Stable with Aluminum, Tantalum or Ceramic Capacitors
• Reverse-Battery Protection
• No Reverse Current Flow from Output to Input
• Thermal Limiting
• Thermally Enhanced 16-Lead TSSOP and 12 Pin (4mm × 3mm) DFN Package

Typical Application

Description

The LT3013B is a high voltage, micropower low dropout linear regulator. The device is capable of supplying 250mA of output current with a dropout voltage of 400mV. Designed for use in battery-powered or high voltage systems, the low quiescent current (65µA operating) makes the LT3013B an ideal choice. Quiescent current is also well controlled in dropout.

Other features of the LT3013B include a PWRGD flag to indicate output regulation. The delay between regulated output level and flag indication is programmable with a single capacitor. The LT3013B also has the ability to operate with very small output capacitors. The regulator is stable with only 3.3µF on the output while most older devices require between 10µF and 100µF for stability. Small ceramic capacitors can be used without any need for series resistance (ESR) as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse current protection.

The device is available with an adjustable output with a 1.24V reference voltage. The LT3013B regulator is available in the thermally enhanced 16-lead TSSOP and the low profile (0.75mm), 12 pin (4mm × 3mm) DFN package, both providing excellent thermal characteristics.