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