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| 型号： | PM6670ATR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.4 A SWITCHING CONTROLLER, QCC24 |
| 封装： | 4 X 4 MM, LEAD FREE, VFQFN-24 |
| 文件页数： | 1/55页 |
| 文件大小： | 849K |
| 代理商： | PM6670ATR |
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Preliminary Data
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
March 2007
Rev 1
1/53
53
PM6670
Complete DDR2/3 memory power supply controller
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
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.
The 2Apk sink/source linear regulator provides
the memory termination voltage with fast load
transient response.
The device is fully compliant with system sleep
states S3 and S4/S5, providing LDO output high
impedance in Suspend-To-RAM and Tracking
Discharge of all outputs in Suspend-To-Disk.
VFQFPN-24 4x4
Table 1. Device summary
Part number
Package
Packaging
PM6670
VFQFPN-24 4x4 (Exposed Pad)
Tube
相关PDF资料 |
PDF描述 |
|---|---|
| PM6670 | 1.4 A SWITCHING CONTROLLER, QCC24 |
| PM6675ASTR | 3 A SWITCHING CONTROLLER, QCC24 |
| PM6675AS | 3 A SWITCHING CONTROLLER, QCC24 |
| PM6675ATR | SWITCHING CONTROLLER, QCC24 |
| PM6675TR | SWITCHING CONTROLLER, QCC24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PM6670S | 功能描述:DC/DC 开关控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| PM6670STR | 功能描述:DC/DC 开关控制器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| PM6670TR | 功能描述:直流/直流开关调节器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| PM6675 | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:LDO CNTRLR STDN 0.6V TO 3.3V/1.5V 24PIN VFQFPN - Rail/Tube |
| PM6675AS | 功能描述:DC/DC 开关控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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