R5220数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The R5220 Series are CMOS-based PWM step-down DC/DC converters with synchronous rectifier. R5220 also has the function of switching to the LDO regulator. By switching with the MODE pin, the device can be used as an LDO regulator (Output Current 50mA) in the smaller output current range, while it can be used as a DC/DC converter (Output Current 400mA*) under high load conditions. (The polarity of the MODE pin is selectable.) The DC/DC converter contains an under-voltage lockout circuit (UVLO), a soft start circuit, and a latch type protection circuit. By simply using an inductor and a capacitor, a high-efficiency DC/DC converter can be easily configured.

*) This is an approximate value, because output current depending on conditions and external parts.

特性 Features

• Input Voltage Range (Maximum Rating)：2.8 V to 5.5 V (6.5 V)；
• Supply Current：Typ. 350 µA (DC/DC), Typ. 5.0 µA (VR)；
• Standby Current：Typ. 0.1 µA；
• Built-in Driver ON Resistance：P-channel 0.5 Ω, N-channel 0.5 Ω (at VIN=3.6 V)；
• Output Current：Min. 400 mA (DC/DC), Min. 50 mA (VR)；
• Output Voltage：1.0 V to 3.3 V (0.1V steps)；
• Output Voltage Accuracy：±2.0% (VOUT≥1.5V), ±30 mV (VOUT<1.5V)；
• Oscillator Frequency (DC/DC)：Typ. 1.2 MHz；
• UVLO Detect Voltage：Typ. 2.35 V；
• Built-in Soft-start Function：Typ. 0.2 ms；
• Latch-type Protection Function (Delay Time)：Typ. 3.0 ms；
• Coil-current Limit Circuit (DC/DC)：Typ. 800 mA；
• Built-in fold-back protection circuit (VR)：Typ. 60 mA；
• Ceramic Capacitor is recommended.：CIN=COUT= 10 µF or more；
• Package：DFN(PLP)2514-6；

应用 Application

• Power source for portable equipment such as DSC, DVC, and communication equipment

简介

R5220属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的R5220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。