LT3150 Fast Transient Response, Low Input Voltage, Very Low Dropout linear Regulator Controller

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. Selection of the N-channel MOSFET RDS(ON) allows dropout voltages below 300mV for low VIN to low VOUT applications.

The LT3150 includes a fixed frequency boost regulator that generates gate drive for the N-channel MOSFET. 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 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

产品特点 Features

Fast Transient Response Optimized with Ceramic Output Capacitors
FET RDS(ON) Defines Dropout Voltage
±1% Reference Tolerance Over Temperature
Multifunction LDO Shutdown Pin with Latchoff
Fixed Frequency 1.4MHz Boost Converter Generates MOSFET Gate Drive
Internally Compensated Current Mode PWM
Boost Converter Uses Tiny Capacitors and Inductor
Independent Boost Converter Shutdown Control Permits LDO Output Voltage Supply Sequencing
16-Lead SSOP Package

参数

应用

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

典型应用图

LT3150 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT3150CGN	SSOP	16	C	$5.29	$3.70
LT3150CGN#PBF	SSOP	16	C	$5.29	$3.70
LT3150CGN#TR	SSOP	16	C		$3.76
LT3150CGN#TRPBF	SSOP	16	C		$3.76

LT3150 数据手册及相关资料下载

数据手册(英文) : LT3150 - Fast Transient Response, Low Input Voltage, Very Low Dropout linear Regulator Controller.PDF
可靠性数据 : R386 Reliability Data .PDF