参数资料
| 型号： | MC33470DW |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC CONV DC/DC SYNC RECT 20-SOIC |
| 产品变化通告： | Product Obsolescence 11/Feb/2009 |
| 标准包装： | 38 |
| 应用： | 控制器，Intel Pentium? II |
| 输入电压： | 4.5 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 3.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC |
| 包装： | 管件 |
MC33470
Synchronous Rectification
DC/DC Converter
Programmable Integrated
Controller
The MC33470 is a digitally programmable switching voltage
regulator, specifically designed for Microprocessor supply, Voltage
Regulator Module and general purpose applications, to provide a high
power regulated output voltage using a minimum of external parts. A
5?bit digital?to?analog converter defines the dc output voltage.
This product has three additional features. The first is a pair of high
speed comparators which monitor the output voltage and expedite the
circuit response to load current changes. The second feature is a
soft?start circuit which establishes a controlled response when input
power is applied and when recovering from external circuit fault
conditions. The third feature is two output drivers which provide
synchronous rectification for optimum efficiency.
This product is ideally suited for computer, consumer, and industrial
equipment where accuracy, efficiency and optimum regulation
performance is desirable.
1
http://onsemi.com
SOIC?20WB
DW SUFFIX
CASE 751D
MARKING DIAGRAM
20
MC33470DW
AWLYYWWG
Features
? 5?Bit Digital?to?Analog Converter Allows Digital Control of Output
1
?
?
?
?
?
?
?
?
?
Voltage
High Speed Response to Transient Load Conditions
Output Enable Pin Provides On/Off Control
Programmable Soft?Start Control
High Current Output Drives for Synchronous Rectification
Internally Trimmed Reference with Low Temperature Coefficient
Programmable Overcurrent Protection
Overvoltage Fault Indication
Functionally Similar to the LTC1553
Pb?Free Packages are Available*
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb?Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
G2 1 20 G1
PV
CC
2
19 OUTEN
P GND 3
A GND 4
V CC 5
Sense 6
I max 7
I fb 8
SS 9
Compensation 10
(Top View)
18 VID0
17 VID1
16 VID2
15 VID3
14 VID4
13 P wrgd
12 Fault
11 OT
*For additional information on our Pb?Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
? Semiconductor Components Industries, LLC, 2006
August, 2006 ? Rev. 4
1
Publication Order Number:
MC33470/D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33470DWG | 功能描述:直流/直流开关调节器 5-Bit Synchronous Rectification Buck 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 |
| MC33470DWR2 | 功能描述:直流/直流开关调节器 5-Bit Synchronous 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 |
| MC33470DWR2G | 功能描述:直流/直流开关调节器 5-Bit Synchronous Rectification Buck 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 |
| MC33486ADH | 功能描述:电源开关 IC - 配电 DUALHIGH-SIDE BRIDGE RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33486ADHR2 | 功能描述:电源开关 IC - 配电 DUALHIGH-SIDE BRIDGE RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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