參數(shù)資料
型號(hào)： ISL6548ACRZ-T
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： ACPI Regulator/Controller for Dual Channel DDR Memory Systems
中文描述： DUAL SWITCHING CONTROLLER, 280 kHz SWITCHING FREQ-MAX, PQCC28
封裝： 6 X 6 MM, LEAD FREE, PLASTIC, MO-220-VJJC, MLPL, QFN-28
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 494K
代理商： ISL6548ACRZ-T
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
PRELIMINARY
ISL6548A
ACPI Regulator/Controller for
Dual Channel DDR Memory Systems
The ISL6548A provides a complete ACPI compliant power
solution for up to 4 DIMM dual channel DDR/DDR2 Memory
systems. Included are both a synchronous buck controller to
supply V
DDQ
during S0/S1 and S3 states. During S0/S1
state, a fully integrated sink-source regulator generates an
accurate (V
DDQ
/2) high current V
TT
voltage without the
need for a negative supply. A second PWM controller, which
requires external MOSFET drivers, is available for regulation
of the GMCH Core voltage. A sink/source LDO controller is
also integrated for the CPU/GMCH V
TT
termination voltage
regulation. Another LDO is available for the ICH7 voltage.
The switching PWM controller drives two N-Channel
MOSFETs in a synchronous-rectified buck converter
topology. The synchronous buck converter uses voltage-
mode control with fast transient response. The switching
regulator provides a maximum static regulation tolerance of
±
2% over line, load, and temperature ranges. The output is
user-adjustable by means of external resistors down to 0.8V.
An integrated soft-start feature brings all outputs into
regulation in a controlled manner when returning to S0/S1
state from any sleep state. During S0 the VIDPGD signal
indicates that the GMCH and CPU V
TT
termination voltage
is within spec and operational.
All outputs, except V
ICH7
, have undervoltage protection. The
switching regulator also has overvoltage and overcurrent
protection. Thermal shutdown is integrated.
Features
Generates 5 Regulated Voltages
- Synchronous Buck PWM Controller for DDR V
DDQ
- 3A Integrated Sink/Source Linear Regulator with
Accurate V
DDQ
/2 Divider Reference for DDR V
TT
- PWM Regulator for GMCH Core
- Sink/Source LDO Regulator for CPU/GMCH V
TT
Termination
- LDO Regulator for ICH7
ACPI compliant sleep state control
Glitch-free Transitions During State Changes
V
DDQ
PWM Controller Drives Low Cost N-Channel
MOSFETs
250kHz Constant Frequency Operation
- Both PWM controllers are Phase Shifted 180°
Tight Output Voltage Regulation
- All Outputs:
±
2% Over Temperature
Fully-Adjustable Outputs with Wide Voltage Range: Down
to 0.8V supports DDR and DDR2 Specifications
Simple Single-Loop Voltage-Mode PWM Control Design
Fast PWM Converter Transient Response
Under and Overvoltage Monitoring
OCP on the V
DDQ
Switching Regulator
Integrated Thermal Shutdown Protection
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Single and Dual Channel DDR Memory Power Systems in
ACPI compliant PCs
Graphics cards - GPU and memory supplies
ASIC power supplies
Embedded processor and I/O supplies
DSP supplies
Data Sheet
FN9189.1
July 22, 2005
相關(guān)PDF資料
PDF描述
ISL6548ACRZA 500-mA Peak Step-Up, Step-Down, Inverting Switching Voltage Regulator 14-SO 0 to 70
ISL6548CRZA-T ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548 ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548CRZ 500-mA Peak Step-Up, Step-Down, Inverting Switching Voltage Regulator 14-SO 0 to 70
ISL6548CRZ-T ACPI Regulator/Controller for Dual Channel DDR Memory Systems
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6548CRZA 功能描述:電壓模式 PWM 控制器 W/ANNEAL 4-IN-1G FOR DDR/I915/925 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6548CRZA-T 功能描述:電壓模式 PWM 控制器 W/ANNEAL 4-IN-1G FOR DDR/I915/925 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6549CA 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
ISL6549CA-T 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
ISL6549CAZA 功能描述:IC REG DL BCK/LINEAR 16-QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
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