• Product introduction

LT1576IS8

1.5A, 200kHz step-down switching regulator

peculiarity

• Constant 200kHz switching frequency
• 1.21V的参考电压
• 固定的5V输出选项
• Easy to sync
• All surface mount components used
• 电感器的尺寸降低到15μH
• 饱和开关设计：0.2欧姆
• 有效的电源电流：1.16毫安
• Shutdown current: 20μA
• Cycle-by-cycle current limit
• 熔铅SO - 8封装

description

LT™1576是一个200kHz的单片降压模式开关稳压器。 A 1.5A switch is dead together with all the necessary oscillators, controls, and logic circuitry. The topology enables a current mode with fast transient response and good loop stability. LT1576是一个LT1376在噪声敏感应用优化的行业标准的修改后的版本。 In addition, this reference voltage has been reduced to allow the output voltage generated by the device to drop to 1.2V. Quiescent current has been reduced by two factors. Resistance switching has been reduced by 30%. The transition time of the switch has been slowed down to reduce EMI generation. The frequency of the oscillator has been reduced to 200kHz to maintain high efficiency over a wide output current range. 已经改变了引脚，允许大电流高频开关电路可以很容易地从低电流噪声敏感控制电路隔离，以改善PC的布局。 新的SO - 8封装，包括一个融合的接地导线，从而显着降低延长工作环境温度范围器件的热阻。 有一个可选功能关闭或同步。 Standard surface-mount external components, including inductors and capacitors, can be used.