MIC23450中文资料Triple 3MHz 2A HyperLight Load® Synchronous Buck Regulator w/Power Good数据手册Microchip规格书

描述 Description

The MIC23450 is a high-efficiency, 3MHz, triple 2A, synchronous buck regulator with HyperLight Load® mode. HyperLight Load® provides very-high efficiency at light loads and ultra-fast transient response which is perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors. The 5mm x 5mm QFN package saves board space and requires only five external components for each channel. The MIC23450 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm height.The MIC23450 has a very-low quiescent current of 23µA each channel and achieves as high as 81% efficiency at 1mA. At higher loads, the MIC23450 provides a constant switching frequency around 3MHz while achieving peak efficiencies up to 93%.

特性 Features

• Input voltage: 2.7V to 5.5V
• Three independent 2A outputs
• Up to 93% peak efficiency
• 81% typical efficiency at 1mA
• Three independent Power Good Indicators
• 23µA typical quiescent current (per channel)
• 3MHz PWM operation in continuous mode
• Ultra-fast transient response
• 30mVpp ripple in HyperLight Load® mode
• 5mV output voltage ripple in full PWM mode
• Fully integrated MOSFET switches
• 0.01µA shutdown current (per channel)
• Thermal-shutdown and current-limit protection
• Output voltage as low as 1V
• 32-pin 5mm x 5mm QFN
• -40°C to +125°C junction temperature range

简介

MIC23450属于集成电路（IC）的DCDC开关稳压器。由制造生产的MIC23450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。