PM6670AS集成電路（IC）的電源管理-專(zhuān)用規(guī)格書(shū)PDF中文資料

PM6670AS屬于集成電路（IC）的電源管理-專(zhuān)用。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的PM6670AS電源管理 - 專(zhuān)用專(zhuān)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(chē)氣囊管理、電容器組平衡、AC 公共電力監(jiān)控、存儲(chǔ)器總線(xiàn)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(zhuān)用電壓調(diào)節(jié)、負(fù)載突降保護(hù)、觸覺(jué)驅(qū)動(dòng)器、熱電制冷器控制等。

Description

The device PM6670AS is a complete DDR2/3 power supply regulator designed to meet JEDEC specifications.

It integrates a constant on-time (COT) buck controller, a 2 Apk sink/source low drop out regulator and a 15 mA low noise buffered reference.

The 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.

Features

■ Switching section (VDDQ)

– 4.5 V to 36 V input voltage range

– 0.9 V, ±1 voltage reference

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

– 0.9 V to 2.6 V adjustable 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

■ VTT LDO and VTTREF

– 2 Apk LDO with foldback for VTT

– Remote VTT sensing

– High-Z VTT output in S3

– Ceramic output capacitors supported

– ±15 mA Low noise buffered reference

Applications

■ DDR2/3 memory supply

■ Digital TV system

■ SSTL18, SSTL15 and HSTL bus termination