| 产品型号 | 输入电压 范围(V) | 最大输出 电流(A) | 输出电压 | 频率 | 待机电流 (uA) | 软启动 | 功率管 内/外置 | 同步/异步 | CC/CV | 补偿 | 控制结构 | 封装类型 | 包装 | 注释 |
| PL5700 | 2.8-30 | 20 | 4.5-30 | 150/300/600/1200 | 1200 | 外置 External | 外置 External | 同步 | CC/CV | 外置 External | COT | QFN4x4-32 | 4K/盘 |
High Efficiency 4-Switch Bidirectional Buck-Boost Controller
1、Features
| 2、Applications
3、Description The PL5700 adopts constant-on-time (COT) control topology, which provides fast transient response. The 2A gate driver minimizes the power loss of the external MOSFET while allowing the use of a wide variety of standard threshold devices. Additionally, the PL5700 uses pulse-skip mode to improve the efficiency under light loads or no load. The switching frequency could be set to 150kHz, 300kHz, 600kHz or 1200kHz based on different resistor value between FREQ pin and GND pin. The device also features a programmable soft-start function and VADJ, IADJ pins are used to program output VBUS voltage and output current limit.Under-voltage lockout (UVLO), soft start (SS), an internal regulated supply, and slope compensation are all provided to minimize the external component count. PL5700 provides voltage control loop, constant current loop. Protection features include hiccup mode for overload protection (OLP), over voltage protection (OVP), and short-circuit protection (SCP). |
| 4、Typical Application Schematic | 5、Pin Configuration and Functions |
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