参数资料
| 型号： | NCP5218MNR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/31页 |
| 文件大小： | 0K |
| 描述： | IC DDR PWR CTLR 2IN2 NTBK 22-DFN |
| 产品变化通告： | Product Obsolescence 30/Sept/2009 |
| 标准包装： | 2,500 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.5 V ~ 24 V |
| 输出数： | 2 |
| 输出电压： | 可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 22-VFDFN 裸露焊盘 |
| 供应商设备封装： | 22-DFN（6x5） |
| 包装： | 带卷 (TR) |
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NCP5218
PIN FUNCTION DESCRIPTION
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Symbol
VDDQEN
VTTEN
FPWM
SS
VTTGND
VTT
VTTI
FBVTT
AGND
DDQREF
VCCA
COMP
FBDDQ
VTTREF
PGOOD
OCDDQ
BOOST
TGDDQ
SWDDQ
VCCP
BGDDQ
PGND
THPAD
Description
V DDQ regulator enable input. High to enable.
V TT regulator enable input. High to enable.
Forced PWM enable input. Low to enable forced PWM mode and disable power ? saving mode.
V DDQ Soft ? start capacitor connection to ground.
Power ground for the V TT regulator.
V TT regulator output.
Power input for V TT regulator which is normally connected to the V DDQ output of the buck regulator.
V TT regulator feedback pin for closed loop regulation.
Analog ground connection and remote ground sense.
External reference input which is used to regulate V TT and V TTREF to 1/2V DDQREF .
5.0 V supply input for the IC’s control and logic section, which is monitored by undervoltage lock out
circuitry.
V DDQ error amplifier compensation node.
V DDQ regulator feedback pin for closed loop regulation.
DDR reference voltage output.
Power good signal open ? drain output.
Overcurrent sense and program input for the high ? side FET of V DDQ regulator. Also the battery voltage
input for the internal ramp generator to implement the voltage feedforward rejection to the input voltage
variation. This pin must be connected to the V IN through a resistor to perform the current limit and
voltage feedforward functions.
Positive supply input for high ? side gate driver of V DDQ regulator and boost capacitor connection.
Gate driver output for V DDQ regulator high ? side N ? Channel power FET.
V DDQ regulator inductor driven node, return for high ? side gate driver, and current limit sense input.
Power supply for the V DDQ regulator low ? side gate driver and also supply voltage for the bootstrap
capacitor of the V DDQ regulator high ? side gate driver supply.
Gate driver output for V DDQ regulator low ? side N ? Channel power FET.
Power ground for the V DDQ regulator.
Copper pad on bottom of IC used for heatsinking. This pin should be connected to the ground plane
under the IC.
http://onsemi.com
4
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相关代理商/技术参数 |
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| NCP5220 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:3−in−1 PWM Dual Buck and Linear Power Controller |
| NCP5220AMNR2 | 功能描述:DC/DC 开关控制器 3-in-1 PWM Dual Buck 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 |
| NCP5220AMNR2G | 功能描述:DC/DC 开关控制器 ANA DDR PWER CNTRLR 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 |
| NCP5220MNR2 | 功能描述:DC/DC 开关控制器 3-in-1 PWM Dual Buck 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 |
| NCP5220MNR2G | 功能描述:DC/DC 开关控制器 3-in-1 PWM Dual Buck Linear DDR 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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