开关稳压器 Automotive Grade 2.95-5.5V, 3A, Current Mode Synchronous Buck Regulator with Adjustable Frequency 16-HTSSOP -40 to 125
The LM20143 devices are full featured PowerWise™ adjustable frequency synchronous buck regulators capable of delivering up to 3 A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95 V to 5.5 V, making it suited for a wide variety of low voltage systems.
The device features internal over voltage protection OVP and over current protection OCP circuits for increased system reliability. A precision enable pin and integrated UVLO allows the turn-on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable Soft-Start circuit. Fault detection and supply sequencing is possible with the integrated power good circuit.
The frequency of this device can be adjusted from 500 kHz to 1.5 MHz by connecting an external resistor from the RT pin to ground.
The LM20143 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track a higher voltage rail using the SS/TRK pin. If the output of the LM20143 is pre-biased at startup it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin.
输出接口数 1
输出电压 0.8 V
输出电流 3 A
静态电流 3.50 mA
调节输出数 1
开关频率 500kHz ~ 1.5MHz
拓扑结构 Buck
输入电压Max 5.5 V
输入电压Min 2.95 V
输出电压Max 4.68 V
输出电压Min 0.8 V
输出电流Max 3 A
工作温度Max 125 ℃
工作温度Min -40 ℃
输入电压 2.95V ~ 5.5V
安装方式 Surface Mount
引脚数 16
封装 HTSSOP-16
封装 HTSSOP-16
工作温度 -40℃ ~ 125℃
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM20143QMH/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM20143QMHE/NOPB 德州仪器 | 完全替代 | LM20143QMH/NOPB和LM20143QMHE/NOPB的区别 |
LM20143QMHX/NOPB 德州仪器 | 类似代替 | LM20143QMH/NOPB和LM20143QMHX/NOPB的区别 |