LT3150

• Product Introduction

The LT3150 is a fast transient response, low input voltage, very low dropout linear regulator controller

peculiarity

• Fast Transient Response Optimized with Ceramic Output Capacitors and Ceramic Output Capacitors
• FET R DS(ON) Defines the defined voltage difference of the Dropout Voltage for the FET
• ±1% Reference Tolerance Over Temperature ±1%
• Multifunction LDO Shutdown Pin with Latchoff
• Fixed Frequency 1.4MHz Boost Converter Generates MOSFET Gate Drive The 1.4MHz boost converter generates the MOSFET gate driver
• Internally Compensated Current Mode PWM
• Boost Converter Uses Tiny Capacitors and Inductor Boost converters use tiny capacitors and inductors
• Independent Boost Converter Shutdown Control Permits LDO Output Voltage Supply Sequencing
• 16-Lead SSOP Package 16-lead SSOP package
• 描述

  The LT®3150 drives a low cost external N-channel MOSFET as a source follower to produce a fast transient response, very low dropout voltage linear regulator. ®The source follower of the LT 3150 driver's low-cost external N-channel MOSFET produces a fast transient response with a very low dropout linear regulator. Selection of the N-channel MOSFET R DS(ON) allows dropout voltages below 300mV for low V IN to low V OUT applications.

  The LT3150 includes a fixed frequency boost regulator that generates gate drive for the N-channel MOSFET. The LT3150 includes a fixed-frequency boost regulator that generates an N-channel MOSFET gate driver. The internally compensated current mode PWM architecture combined with the 1.4MHz switching frequency permits the use of tiny, low cost capacitors and inductors. The 1.4MHz switching frequency combined, internally compensated current-mode PWM architecture allows for the use of slim, low-cost capacitors and inductors.

  The LT3150's transient load performance is optimized with ceramic output capacitors. The LT3150's transient load performance is optimized with ceramic output capacitors. A precision 1.21V reference accommodates low voltage supplies.

  Protection includes a high side current limit amplifier that activates a fault timer circuit. A multifunction shutdown pin provides either current limit time-out with latchoff, overvoltage protection or thermal shutdown. Independent shutdown control of the boost converter provides on/off and sequencing control of the LDO output voltage.

• apply

  • Microprocessor, ASIC and I/O Supplies
  • Very Low Dropout Input-to-Output Conversion
  • Logic Termination Supplies Logic termination power supplies