AP1539中文资料buck-converter数据手册Diodes规格书

描述 Description

AP1539 consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS.
AP1539 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 99%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced from 300KHz to 50KHz. Also, an internal compensation block is built in to minimum external component count. With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coup°C with the SO-8DEP mini-package, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage up to 18V, it is also suitable for the operation via an AC adapter.

应用 Application

PC MotherboardLCD MonitorGraphic CardDVD-Video PlayerTelecom EquipmentADSL ModemPrinter and other Peripheral EquipmentMicroprocessor core supply
\t\t\t\t\t\t

\t\t\t\t\t\t


\t\t\t\t\t
\t\t\t\t
\t\t\t




\t\t\t
\t\t\t\t
\t\t\t\tProduct Specifications

简介

AP1539属于集成电路（IC）的稳压器-DC-DC开关稳压器。由Diodes制造生产的AP1539稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。