参数资料
| 型号： | NCP5222MNR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC CTLR BUCK 2CH 2PH 28QFN |
| 标准包装： | 4,000 |
| 应用： | 多相控制器 |
| 电流 - 电源： | 2.5mA |
| 电源电压： | 4.5 V ~ 27 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（4x4） |
| 包装： | 带卷 (TR) |
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NCP5222
High Performance
Dual-Channel / Two-Phase
Synchronous Buck
Controller for Notebook
Power System
The NCP5222, a fast ? transient ? response and high ? efficiency
dual ? channel / two ? phase buck controller with built ? in gate drivers,
provides multifunctional power solutions for notebook power system.
http://onsemi.com
MARKING
DIAGRAM
180 ° interleaved operation between the two channels / phases has a
capability of reducing cost of the common input capacitors and
improving noise immunity. The interleaved operation also can reduce
cost of the output capacitors with the two ? phase configuration. Input
supply voltage feedforward control is employed to deal with wide
1
QFN28
CASE 485AR
N5222
ALYW G
G
Vo2
CS2+
S KIP1
11 BST2
BST1 25
input voltage range. On ? line programmable and automatic
power ? saving control ensures high efficiency over entire load range.
Fast transient response reduces requirement on the output filters. In the
dual ? channel operation mode, the two output power rails are regulated
individually. In the two ? phase operation mode, the two output power
rails are connected together by an external switch and current ? sharing
control is enabled to balance power delivery between phases.
Features
? Wide Input Voltage Range: 4.5 V to 27 V
? Adjustable Output Voltage Range: 0.8 V to 3.3 V
? Option for Dual ? Channel and Two ? Phase Modes
? Fixed Nominal Switching Frequency: 300 kHz
? 180 ° Interleaved Operation Between the Two Channels in
Continue ? Conduction ? Mode (CCM)
? Adaptive Power Control
? Input Supply Voltage Feedforward Control
? Transient ? Response ? Enhancement (TRE) Control
? Resistive or Inductor ’s DCR Current Sensing
? 0.8% Internal 0.8 V Reference
? Internal 1 ms Soft ? Start
? Output Discharge Operation
? Built ? in Adaptive Gate Drivers
? Input Supplies Undervoltage Lockout (UVLO)
? Output Overvoltage and Undervoltage Protections
? Accurate Over Current Protection
? Thermal Shutdown Protection
? QFN ? 28 Package
? This is a Pb ? Free Device
Typical Applications
? CPU Chipsets Power Supplies
? Notebook Applications
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb ? Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
7 6 5 4 3 2 1
8 CS2 ? / CS1 ? / 28
Vo1
9 CS1+ 27
10 EN2/ NCP5222 EN1/ 26
SKIP2
AGND
29
12 DH2 DH1 24
13 SWN2 SWN1 23
14 DL2 DL1 22
15 16 17 18 19 20 21
(Top View)
ORDERING INFORMATION
Device Package Shipping ?
NCP5222MNR2G QFN28 4000 /
(Pb ? Free) Tape & Reel
?For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
? Semiconductor Components Industries, LLC, 2010
November, 2010 ? Rev. 1
1
Publication Order Number:
NCP5222/D
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