LT1573是Low Dropout Regulator Driver

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LT1573 - LT1573是Low Dropout Regulator Driver

LT1573是Linear公司的一款分立式调整组件线性稳压器 (LDO)产品，LT1573是Low Dropout Regulator Driver，本站介绍了LT1573的封装应用图解、特点和优点、功能等，并给出了与LT1573相关的凌力尔特元器件型号供参考。

LT1573 - Low Dropout Regulator Driver

LT1573 - Low Dropout Regulator Driver - Linear Technology（凌力尔特）

功能描述

The LT®1573 is a regulator driver IC designed to provide a low cost solution for applications requiring high current, low dropout and fast transient response. When combined with an external PNP power transistor, this device provides load current up to 5A with dropout voltages as low as 0.35V. The LT1573 circuitry is designed for extremely fast transient response. This greatly reduces bulk storage capacitance when the regulator is used in applications with fast, high current load transients.To keep cost and complexity low, the LT1573 uses a new time-delayed latching overcurrent protection technique that requires no external current sense resistor. Base drive is limited for instantaneous protection, and a time-delayed latch protects the regulator from continuous short circuits.The LT1573 is available as an adjustable regulator with an output range of 1.27V to 6.8V and with fixed output voltages of 2.5V, 2.8V and 3.3V. Output accuracy is better than 1% to meet the critical regulation requirement of fast microprocessors. A special 8-pin, fused-lead surface mount package is used to minimize regulator footprint and provide adequate heat sinking.

特点

Low Cost Solution for High Current, Low Dropout Regulators

Fast Transient Response Needs Much Less Bulk Capacitance

Latching Overload Protection Minimizes Heat Sink Size

Precision Output Voltage (1%)

Single Supply Operation: VIN = 2.8V to 10V

Small Surface Mount Package

Capable of Very Low Dropout Voltage (<0.2V)

Fixed or Adjustable Outputs

Shutdown

应用

3.3V to 2.5V Regulator

Microprocessor Power Source

Post Regulator for Switching Supplies

High Efficiency Linear Regulators

Ultralow Dropout Regulators

Low Voltage Linear Regulators

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT1573CS8	SO-8	C	$2.05	$1.75
LT1573CS8-2.5	SO-8	C	$2.05	$1.75
LT1573CS8-2.5#PBF	SO-8	C	$2.05	$1.75
LT1573CS8-2.5#TR	SO-8	C		$1.81
LT1573CS8-2.5#TRPBF	SO-8	C		$1.81
LT1573CS8-2.8	SO-8	C	$2.05	$1.75
LT1573CS8-2.8#PBF	SO-8	C	$2.05	$1.75
LT1573CS8-3.3	SO-8	C	$2.05	$1.75
LT1573CS8-3.3#PBF	SO-8	C	$2.05	$1.75
LT1573CS8#PBF	SO-8	C	$2.05	$1.75
LT1573CS8#TR	SO-8	C		$1.81
LT1573CS8#TRPBF	SO-8	C		$1.81
LT1573IS8	SO-8	I	$2.50	$2.10
LT1573IS8#PBF	SO-8	I	$2.50	$2.10
LT1573IS8#TR	SO-8	I		$2.16
LT1573IS8#TRPBF	SO-8	I		$2.16