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參數資料
型號: PM6641
廠商: STMICROELECTRONICS
元件分類: 穩壓器
英文描述: SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, QCC48
封裝: 7 X 7 MM, 1 MM HEIGHT, LEAD FREE, VQFP-48
文件頁數: 1/47頁
文件大小: 2254K
代理商: PM6641
May 2009
Doc ID 13510 Rev 3
1/47
47
PM6641
Monolithic VR for chipset and DDR2/3 supply
for ultra-mobile PC (UMPC) applications
Features
0.8 V ±1% internal voltage reference
2.7 V to 5.5 V input voltage range
Fast response, constant frequency,
current mode control
Three independent, adjustable, out-of-phase
SMPS for DDR2/3 (VDDQ) and chipset supply
Low noise DDR2/3 reference (VTTREF)
±2 Apk LDO for DDR2/3 termination (VTT)
with foldback
S0-S5 states compliant DDR2/3 section
Active soft-end for all outputs
Selectable tracking discharge for VDDQ
Separate Power Good signals
Pulse skipping at light load
Programmable current limit and soft-start for
all outputs
Latched OVP, UVP protection
Thermal protection
Applications
DDR2/3 memory and chipset supply
UMPC and portable equipment
Handheld and PDAs
Description
The PM6641 is a monolithic voltage regulator
module specifically designed to supply DDR2/3
memory and chipset in ultra-mobile PC and real
estate constrained portable systems.
It integrates three independent, adjustable,
constant frequency buck converters, a ±2 Apk low
drop-out (LDO) linear regulator and a
±15 mA low noise buffered reference.
Each regulator provides basic UV and OV
protections, programmable soft-start and current
limit and active soft-end.
Pulse-skipping technique is performed to increase
efficiency at very light load.
VFQFPN-48 7x7 mm
Table 1.
Device summary
Order codes
Package
Packaging
PM6641
VFQFPN-48 7x7 (exposed pad)
Tray
PM6641TR
Tape and reel
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相關代理商/技術參數
參數描述
PM6641TR 功能描述:低壓差穩壓器 - LDO Monolithic VR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓(最大值):307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
PM6644 功能描述:直流/直流開關調節器 350mA adjust SD reg 4.5V to 25V 350mA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
PM6644TR 功能描述:DC/DC 開關控制器 350 mA adj step-down 4.5 to 25V -40, 150c RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
PM6650 制造商:Qualcomm 功能描述:Electronic Component
PM6652 功能描述:DC/DC 開關控制器 Single Phase CNTR Intel MVP 6.5 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
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