LT1533 - Ultralow Noise1A Switching Regulator

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

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.

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

Precision Instrumentation Systems

Isolated Supplies for Industrial Automation

Medical Instruments

Wireless Communications

Single Board Data Acquisition Systems

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

LT3439 - 摆率受控的超低噪声 1A 隔离式 DC/DC 变压器驱动器

LT1534 - Ultralow Noise 2A Switching Regulator

LT1683 - 转换速率控制型超低噪声推挽式 DC/DC 控制器

LT1763 - 500mA、低噪声、LDO 微功率稳压器

LT3080 - 可调 1.1A、单电阻、低压差稳压器

LT8614 - 具 2.5μA 静态电流的 42V、4A 同步降压型 Silent Switcher

LTC6655 - 0.25ppm 噪声、低漂移、精准基准系列

LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller

LT1761 - 采用 SOT-23 封装的 100mA、低噪声、LDO 微功率稳压器

LT8471 - 具 2A 开关和同步功能的双通道、多拓扑 DC/DC 转换器

• LTC2610 - LTC2610是采用 16 引脚 SSOP 封装的八通道 14 位轨至轨 DAC
• LT1112MJ8 - LT1112MJ8是Dual/Quad Low Power Precision, Picoamp Input Op Amps
• LTC3226 - LTC3226是具后备 PowerPath 控制器的两节超级电容器充电器
• LTC1688 - LTC1688是100Mbps RS485 Hot Swapable Quad Drivers
• LTC1265 - LTC1265是1.2A, High Efficiency Step-Down DC/DC Converter
• LT1172MJ8 - LT1172MJ8是100kHz、5A、2.5A 和 1.25A 高效率开关稳压器
• LT3758A - LT3758A是高输入电压、升压、反激式、SEPIC 和负输出控制器
• LT3759 - LT3759是宽输入电压范围升压 / SEPIC / 负输出控制器
• LTC3717 - LTC3717是Wide Operating Range, No R_SENSE? Step-Down Controller for DDR/QDR Memory Termination
• LTC3863 - LTC3863是60V、低 I_Q、负输出 DC/DC 控制器