PM6675S High efficiency step down controller with embedded 2A LDO regulator

The PM6675S device consists of a single high efficiency step-down controller and an independent Low Drop-Out (LDO) linear regulator.

The Constant On-Time (COT) architecture assures fast transient response supporting both electrolytic and ceramic output capacitors. An embedded integrator control loop compensates the DC voltage error due to the output ripple.

A selectable low-consumption mode allows the highest efficiency over a wide range of load conditions. The low-noise mode sets the minimum switching frequency to 33 kHz for audio-sensitive applications.

The LDO linear regulator can sink and source up to 2 Apk. Two fixed current limits (±1 A-±2 A) can be chosen.

An active soft-end is independently performed on both the switching and the linear regulators outputs when disabled

技术特性
  • Switching section
    • 4.5 V to 28 V input voltage range
    • 0.6 V, ±1 % voltage reference
    • Selectable 1.5 V fixed output voltage
    • Adjustable 0.6 V to 3.3 V output voltage
    • 1.237 V ±1 % reference voltage available
    • Very fast load transient response using constant on-time control loop
    • No RSENSE current sensing using low side MOSFETs' RDS(ON)
    • Negative current limit
    • Latched OVP and UVP
    • Soft-start internally fixed at 3 ms
    • Selectable pulse skipping at light load
    • Selectable No-Audible (33 kHz) pulse skip mode
    • Ceramic output capacitors supported
    • Output voltage ripple compensation
    • Output soft-end
  • LDO regulator section
    • Adjustable 0.6 V to 3.3 V output voltage
    • Selectable ±1 Apk or ±2 Apk current limit
    • Dedicated power-good signal
    • Ceramic output capacitors supported
    • Output soft-end
功能框图
PM6675S 订购信息
订购型号 产品状态 美金价格 数量 封装 包装形式 温度范围 材料声明
PM6675STR Active   1000 VFQFPN 24 4x4x1.0 Tape And Reel    
PM6675S Active   1000 VFQFPN 24 4x4x1.0 Tube    
DATASHEET
描述 版本 大小
PM6675S : DS5713: High efficiency step-down controller with embedded 2 A LDO regulator 1 2621KB
APPLICATION NOTES
描述 版本 大小
AN2816: High-efficiency step-down controller with embedded 2 A LDO regulator 1 2282KB
BOARDS AND TOOLS
型号 描述
STEVAL-ISA052V1 Evaluation board for the PM6675S high efficiency step-down controller with embedded 2 A LDO regulator