L4964中文资料高电流开关稳压器数据手册ST规格书

描述 Description

The L4964 is a stepdown power switching regulator delivering 4A at a voltage variable from 5.1V to 28V.

Features of the device include overload protection, soft start, remote inhibit, thermal protection, a reset output for microprocessors and a PWM comparator input for synchronization in multichip configurations.

The L4964 is mounted in a 15-lead Multiwattâ plastic power package and requires very few external components.

Efficient operation at switching frequencies up to 120kHz allows a reduction in the size and cost of external filter components.

特性 Features

• CURRENT LIMITING
• RESET OUTPUT
• THERMAL SHUTDOWN
• INPUT FOR REMOTE INHIBIT AND SYNCHRONUS PWM
• VERY FEW EXTERNAL COMPONENTS
• VERY HIGH EFFICIENCY (UP TO 90 %)
• 4 A OUTPUT CURRENT
• 0 TO 100 % DUTY CYCLE RANGE
• 5.1 V TO 28 V OUTPUT VOLTAGE RANGE
• SWITCHING FREQUENCY UP TO 120 KHz
• SOFT START
• PRECISE (± 3 %) ON-CHIP REFERENCE

简介

L4964属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的L4964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。