MCP1665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 MCP1665 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DC converter that integrates a 36V, 100 mΩ NMOS switch. It provides a space-efficient high-voltage step-up power supply solution for applications powered by either three-cell alkaline, Ultimate Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries. The integrated switch is protected by the typical 3.6A cycle-by-cycle inductor peak current limit operation. There is an output overvoltage protection and an open-load protection that turn off switching if the feedback resistors are accidentally disconnected, the feedback pin is short-circuited to GND or the output is exposed to excessive voltage. Pulse-Frequency Modulation (PFM) switching mode used for power saving is implemented, and it is selectable by the dedicated MODE pin.MCP1665 is easy to use and allows creating classic boost, SEPIC or flyback DC-DC converters within a small Printed Circuit Board (PCB) area. All compensation and protection circuitry are integrated to minimize the number of external components.

特性 Features

36V, 100 mΩ Integrated Switch
Up to 92% Efficiency
Higher Current Compared to the Previous MCP166x Switchers Family
Output Voltage Range: Up to 32V
IOUT > 1 A at 5.0V VIN, 12V VOUT
IOUT > 700 mA at 3.3V VIN, 12V VOUT
IOUT > 400 mA at 4.2V VIN, 24V VOUT
Input Voltage Range: 2.9V to 5V
UVLO at VIN Rising: 2.9V, typical
UVLO at VIN Falling: 2.7V, typical
No Load Input Current: 250 μA Typically for PFM, 500 μA Typically for PWM
Shutdown Mode with 0.4 μA Typical Quiescent Current
Automatically PFM/PWM or Selected by the MODE Pin, for High Efficiency
500 kHz PWM Operation with Skipping Mode Operation Selectable by Dedicated MODE Pin
Feedback Voltage Reference: VFB = 1.2V
Cycle-by-Cycle Current Limiting
Internal Compensation
Inrush Current Limiting and Internal Soft Start
Output Overvoltage Protection (OVP) and Open-Load Protection (OLP) for Constant Current Configuration
Thermal Shutdown
Easily Configurable for SEPIC, Cuk or Flyback Topologies
Available Package: 10-Lead 2x2 mm VQFN

简介

MCP1665属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MCP1665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。