B62891 B62892 B6289Y 升壓芯片ic
B62891是一款微小型、率、升壓型 DC/DC 調整器。電路由電流模 PWM 控制環(huán)路,誤差放大器,斜波補償電路,比較器和功率開關等模塊組成。B62891芯片可在較寬負載范圍內穩(wěn)定的工作,內置一個 4A 的功率開關和軟啟動保護電路。高達 96%的轉換效率能夠的延長電池壽命。可以通過調整兩個FB電阻來設定輸出電壓。
B62891 is a miniature, high efficiency, step-up DC / DC regulator. The circuit consists of current mode PWM control loop, error amplifier, ramp compensation circuit, comparator and power switch. The B62891 chip can work efficiently and stably in a wide range of loads. It has a built-in 4A power switch and soft-start protection circuit. Up to 96% conversion efficiency can effectively extend battery life. The output voltage can be set by adjusting two FB resistors.
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