PM6670集成電路（IC）的電源管理-專用規(guī)格書PDF中文資料

PM6670屬于集成電路（IC）的電源管理-專用。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的PM6670電源管理 - 專用專用型電源管理集成電路 (PMIC) 用于電源的控制或操作，適合特定或小范圍的目標(biāo)應(yīng)用，例如汽車氣囊管理、電容器組平衡、AC 公共電力監(jiān)控、存儲(chǔ)器總線端接、接地故障檢測(cè)、能量收集、小型引擎管理、處理器或芯片集專用電壓調(diào)節(jié)、負(fù)載突降保護(hù)、觸覺驅(qū)動(dòng)器、熱電制冷器控制等。

Description

The device PM6670 is a complete DDR2/3 power supply regulator designed to meet JEDEC specifications.

It integrates a Constant On-Time (C.O.T.) buck controller, a 2Apk sink/source Low Drop Out regulator and a 15mA low noise buffered reference.

The C.O.T. 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.

Features switching

■ Switching section (VDDQ)

– 4.5V to 28V input voltage range

– 0.9V, ±1 voltage reference

– 1.8V (DDR2) or 1.5V (DDR3) fixed output voltages

– 0.9V to 2.6V adjustable output voltage

– 1.237V ±1 reference voltage available

– Very fast load transient response using constant on-time control loop

– No RSENSE current sensing using low side MOSFET’s RDS(ON)

– Negative current limit

– Latched OVP and UVP

– Soft start internally fixed at 3ms

– Selectable pulse skipping at light load

– Selectable No-Audible (33KHz) pulse skip mode

– Ceramic output capacitors supported

– Output voltage ripple compensation

■ VTT LDO and VTTREF

– 2Apk LDO with foldback for VTT

– Remote VTT sensing

– High-Z VTT output in S3

– Ceramic output capacitors supported

– ±15mA Low noise buffered reference

Applications

■ DDR2/3 memory supply

■ Notebook computers

■ Handheld and PDAs

■ CPU and chipset I/O supplies

■ SSTL18, SSTL15 and HSTL bus termination