基于LTCR3589设计的带I2C八输出电源稳压方案
时间:05-08
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本文介绍了LTCR3589主要特性,方框图以及典型应用电路。Linear 公司的LTCR3589是带时序和I2C的八输出电源稳压器,是ARM和基于ARM处理器以及手提微处理器系统的完整的电源管理解决方案。LTCR3589包括用于核,存储器和SoC的三个同步降压DC/DC转换器,用于I/O的同步降压-升压稳压器,以及三个用于低噪音模拟电源的250mA LDO稳压器。
LTCR3589主要特性:
Triple I2C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A, 1A
High Efficiency 1.2A Buck-Boost DC/DC Converter
Triple 250mA LDO Regulators
Pushbutton ON/OFF Control with System Reset
Flexible Pin-Strap Sequencing Operation
I2C and Independent Enable Control Pins
Power Good and Reset Outputs
Dynamic Voltage Scaling and Slew Rate Control
Selectable 2.25MHz or 1.12MHz Switching Frequency
Always Alive 25mA LDO Regulator
8μA Standby Current
40-Pin 6mm × 6mm × 0.75mm QFN
LTCR3589应用:
Handheld Instruments and Scanners
Portable Industrial Devices
Automotive Infotainment
Medical Devices
High End Consumer Devices
Multirail Systems
Supports Freescale i.MX, Marvell PXA and Other Application Processors
图1。LTCR3589方框图
图2。LTCR3589典型应用电路图(1)
图3。LTCR3589典型应用电路图(2)
LTCR3589主要特性:
Triple I2C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A, 1A
High Efficiency 1.2A Buck-Boost DC/DC Converter
Triple 250mA LDO Regulators
Pushbutton ON/OFF Control with System Reset
Flexible Pin-Strap Sequencing Operation
I2C and Independent Enable Control Pins
Power Good and Reset Outputs
Dynamic Voltage Scaling and Slew Rate Control
Selectable 2.25MHz or 1.12MHz Switching Frequency
Always Alive 25mA LDO Regulator
8μA Standby Current
40-Pin 6mm × 6mm × 0.75mm QFN
LTCR3589应用:
Handheld Instruments and Scanners
Portable Industrial Devices
Automotive Infotainment
Medical Devices
High End Consumer Devices
Multirail Systems
Supports Freescale i.MX, Marvell PXA and Other Application Processors
图1。LTCR3589方框图
图2。LTCR3589典型应用电路图(1)
图3。LTCR3589典型应用电路图(2)
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