MC34167中文资料降压/升压/逆变稳压器，开关，5.0 A数据手册ONSEMI规格书

描述 Description

The MC34167, MC33167 series are high performance fixed frequency power Buck Boost Inverting Switching Regulators that contain the primary functions required for dc-dc converters. This series was specifically designed to be incorporated in step-down and voltage-inverting configurations with a minimum number of external components. These devices consist of an internal temperature compensated reference, fixed frequency oscillator with on-chip timing components, latching pulse width modulator for single pulse metering, high gain error amplifier, and a high current output switch. Protective features consist of cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown. Also included is a low power standby mode that reduces power supply current to 36 µA.

特性 Features

• Output Switch Current in Excess of 5.0 A
• Fixed Frequency Oscillator (72 kHz) with On-Chip Timing
• Provides 5.05 V Output without External Resistor Divider
• Precision 2% Reference
• 0% to 95% Output Duty Cycle
• Cycle-by-Cycle Current Limiting
• Undervoltage Lockout with Hysteresis
• Internal Thermal Shutdown
• Operation from 7.5 V to 40 V
• Standby Mode Reduces Power Supply Current to 36 µA
• Economical 5-Lead TO-220 Package with Two Optional Leadforms
• Also Available in Surface Mount D2 PAK Package
• Moisture Sensitivity Level (MSL) Equals 1
• Pb-Free Packages are Available

应用 Application

• Digital TV (LCD, PDP)
• Efficient system pre-regulator for linear voltage regulators
• Battery chargers

简介

MC34167属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MC34167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。