LT1533是Ultralow Noise1A Switching Regulator

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LT1533 - LT1533是Ultralow Noise1A Switching Regulator

LT1533是Linear公司的一款超低噪声稳压器产品，LT1533是Ultralow Noise1A Switching Regulator，本站介绍了LT1533的封装应用图解、特点和优点、功能等，并给出了与LT1533相关的凌力尔特元器件型号供参考。

LT1533 - Ultralow Noise1A Switching Regulator

LT1533 - Ultralow Noise1A Switching Regulator - Linear Technology（凌力尔特）

功能描述

The LT1533 is a new class of switching regulator designed to reduce conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by providing user control of the output switch slew rates. Voltage and current slew rates can be independently programmed to optimize switcher harmonic content versus efficiency. The LT1533 can reduce high frequency harmonic power by as much as 40dB with only minor losses in efficiency. The LT1533 utilizes a dual output switch current mode architecture optimized for low noise topologies. The IC includes two 1A power switches along with all necessary oscillator, control and protection circuitry. Unique error amp circuitry can regulate both positive and negative voltages. The internal oscillator may be synchronized to an external clock for more accurate placement of switching harmonics. Protection features include cycle by cycle current limit protection, undervoltage lockout and thermal shutdown. Low minimum supply voltage and low supply current during shutdown make the LT1533 well suited for portable applications. The part may also be forced into a 50% duty cycle mode for unregulated applications. The LT1533 is available in the 16-pin narrow SO package.

特点

Greatly Reduced Conducted and Radiated EMI (<100µVP-P in Typical Application)

Low Switching Harmonic Content

Independent Control of Switch Voltage and Current Slew Rates

Two 1A Current Limited Power Switches

Regulates Positive and Negative Voltages

20kHz to 250kHz Oscillator Frequency

Easily Synchronized to External Clock

Wide Input Voltage Range: 2.7V to 23V

Low Shutdown Current: 12µA Typical

Easier Layout than with Conventional Switchers

Outputs Can Be Forced to 50% Duty Cycle for Unregulated Applications

应用

Precision Instrumentation Systems

Isolated Supplies for Industrial Automation

Medical Instruments

Wireless Communications

Single Board Data Acquisition Systems

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)
LT1533CS	SO-16	C	$5.50	$4.65
LT1533CS#PBF	SO-16	C	$5.50	$4.65
LT1533CS#TR	SO-16	C		$4.71
LT1533CS#TRPBF	SO-16	C		$4.71
LT1533IS	SO-16	I	$7.65	$6.15
LT1533IS#PBF	SO-16	I	$7.65	$6.15
LT1533IS#TR	SO-16	I		$6.21
LT1533IS#TRPBF	SO-16	I		$6.21