P1786G-S08-R PWM降压转换器

技术规格

电源电压（最低） Supply Voltage (minimum)	4V
电源电压（最大） Supply Voltage (maximum)	23V
频率（最大） Frequency (max)	360kHz
静态电流 Quiescent Current	0.09mA
参考电压容差 Voltage Reference Tolerance	1%
驱动器类型 Drive Type	Internal PMOS

详细描述

UTC 的 P1786 由 3A 降压开关稳压器控制，其中包括参考电压源、振荡电路、误差放大器和内部 PMOS。

P1786 可以提供低纹波功率、高效率和出色的瞬态特性。

内置使能功能、过流保护和短路保护功能，当发生OCP或SCP时，工作频率可以从300KHz降低到30KHz。

PWM 控制电路可以将占空比从 100 线性变化到 0%。

该转换器还包括一个误差放大器电路以及一个防止启动时过冲的软启动电路。

内置了一个内部补偿块以减少外部元件数量。

这些 IC 通过增加内部 P 沟道功率 MOS、线圈、电容器和外部连接的二极管，可以用作降压开关稳压器。

UTC's P1786 consists of 3A step-down switching regulator control which includes a reference voltage source, oscillation circuit, error amplifier and internal PMOS.

The P1786 can provide low-ripple power, high efficiency, and excellent transient characteristics.

An enable function, an over current protect and short circuit protect function are built inside, so the operation frequency can be reduced from 300KHz to 30KHz when OCP or SCP occurs.

The PWM control circuit can vary the duty ratio linearly from 100 down to 0%.

This converter also includes an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup.

An internal compensation block is built in to reduce external component count.

These ICs can work as step-down switching regulators with the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally.

规格书和资料

Data Sheet