PL7512A是颗适合用于锂升压9V输出电压，输出电流能力可以持续输出1.5A.外围简单，效率高，稳定性强。

计算
电感值计算公式，r 电感峰对峰值与电感平均电流的比例(一般设定在 0.3~0.5)。举例：
Vin=3.3V、Vout=12V、Iout=1.5A(max)、Fs=400kHz、Eff=88%、r=0.3，代入公式求得电感
L=3.217uH，选用 3.3uH。 

电容与肖特基选用
PULAN  CO., LIMITED 应用说明
 选用 X5R,X7R 材质，不建议使用 Y5V 材质(內阻高，电容值随温度变化大)；
肖特基选用低导通电压，平均电流大于输入与电感峰值电流，耐压大于输出电压的 1.5 倍。 
林小姐：18129877857  QQ：2851339687

 锂电池升压IC，锂电池升压输出12V电压，输出电流可达1A，推荐：PL7512A芯片。

 PL7512A用于锂电池升压12V1A应用中，外围简单，高效率，性能稳定。

    输出12V测试数据

VIN                               VOUT

电压         电流                   电压        电流

3.04V       4.68A                12.14V    1A          85.7%

3.53V       3.94A                12.18V    1A          87.5%

     The PL7512A is a current mode boost DC-DC converter. It is PWM circuitry with built-in 15mΩ power MOSFET make this regulator highly power efficient. The non-inverting input of error amplifier connects to a 1.2V precision reference voltage. Current mode control and external compensation network make is easy and flexible to stabilize the system.
     The PL7512A is available in the SOP-8L(EP) package to fit in space-saving PCB for the application fields. 

Features
➢ Supply Voltage Operating Range: 2.7V to 12V
➢ Adjustable Output up to 13V
➢ Internal Fixed PWM frequency: 400KHz
➢ Precision Feedback Reference Voltage: 1.2V (±2%)
➢ Internal 15mΩ, 10A, 14V Power MOSFET
➢ Shutdown Current: 1μA (Max.)
➢ Over TemperatureProtection
➢ Internal Soft Start Function
➢ Adjustable Over Current Protection: 2A ~ 10A
➢ Package: SOP-8L(EP)