开关稳压器 6A, Adjustable Frequency Synchronous Buck Regulator 16-HTSSOP -40 to 125
The LM20146 is a full featured adjustable frequency synchronous buck regulator capable of delivering up to 6A 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 2.95V to 5.5V making it suitable 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 are possible with the integrated power good circuit.
The LM20146 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 LM20146 is pre-biased at startup it will not pull the ouput low.
The frequency of this device can be adjusted from 250 kHz to 750 kHz by connecting an external resistor from the RT pin to ground.
The LM20146 is offered in a 16-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heatsinks.
输出接口数 1
输出电压 0.8V ~ 5V
输出电流 6 A
静态电流 3.50 mA
调节输出数 1
开关频率 260kHz ~ 750kHz
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
工作温度Max 125 ℃
工作温度Min -40 ℃
输入电压 5.5 V
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 Tape & Reel TR
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 |
---|---|---|
LM20146MHX/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM20146MH/NOPB 德州仪器 | 类似代替 | LM20146MHX/NOPB和LM20146MH/NOPB的区别 |
LM20146MHE/NOPB 德州仪器 | 类似代替 | LM20146MHX/NOPB和LM20146MHE/NOPB的区别 |