MC34063A中文资料降压/升压/逆向稳压器，开关，1.5A数据手册ONSEMI规格书

描述 Description

The MC34063A Series is a monolithic control circuit containing the primary functions required for dc-to-dc converters. These Buck Boost Inverting Switching Regulators consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step down (Buck), Step up (Boost) and Voltage-Inverting applications with a minimum number of external components. Refer to Application Notes AN920A/D and AN954/D for additional design information. The MC33063 is an extended temperature version. The NCV33063 is an extended temp version for automotive.

特性 Features

• Operation from 3.0 V to 40 V Input
• Wide input voltage range usable for many applications
• Low Standby Current
•
• Current Limiting
• Adjustable current limit provides improved protection
• Output Switch Current to 1.5 A
• Large 1.5A peak current capability provides up to ~1A of average current output
• Output Voltage Adjustable
• External resistor divider for various output voltage options
• Frequency Operation to 100 kHz
• Optimize frequency for size or efficiency
• Precision 2% Reference
• Accurate system level performance
• 4x4mm DFN package option
• Exposed pad package allows for higher output current and improved thermal performance
• MC34063A = 0 to +70degC
• MC33063A = -40 to +85degC
• MC33063AV / NCV33063A = -40 to +125degC

应用 Application

• For Higher Switching Frequency See NCP3063
• For Dedicated ENABLE Pin and Higher Switching Frequency See NCP3064
• Fan Controller
• DC-DC Power Supply
• For DFN package see MC33063MNTXG
• Cigarette Lighter Adapter (CLA)
• Power Supply

简介

MC34063A属于集成电路（IC）的DCDC开关稳压器。由ONSEMI制造生产的MC34063A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。