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NCP5424DR2 Datasheet

  • NCP5424DR2

  • Dual Synchronous Buck Controller with Input Current Sharing

  • 135.07KB

  • 20頁(yè)

  • ONSEMI

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NCP5424
Dual Synchronous
Buck Controller with Input
Current Sharing
The NCP5424 is a flexible dual N-channel synchronous buck
controller utilizing V
2
鈩?/div>
control for fast transient response and
excellent line and load regulation. This highly versatile controller can
be configured as a single two phase output converter that draws
programmable amounts of current from two different input voltages or
all current from one supply. The NCP5424 can also be configured as
two independent out-of-phase controllers.
Using the NCP5424 in a current sharing input configuration is ideal
for applications where more power is required than is available from
one supply, such as video cards or other plug-in boards. When
configured as a dual output controller, the output of one controller can
be divided down and used as the reference for the second controller.
This tracking capability is useful in applications such as Double Data
Rate (DDR) Memory power where the termination voltage must track
VDD.
The NCP5424 provides a cycle- to- cycle current limit on
Controller 2 allowing the system to handle transient overcurrent
events and a hiccup mode overcurrent protection on Controller 1
allowing lossless short circuit protection. In addition, the NCP5424
provides Soft Start, undervoltage lockout, and built-in adaptive FET
nonoverlap time to prevent shoot through.
Features
http://onsemi.com
SO-16
D SUFFIX
CASE 751B
1
16
PIN CONNECTIONS AND
MARKING DIAGRAM
1
GATE(H)1
GATE(L)1
GND
BST
IS+1
IS-
V
FB1
COMP1
16
GATE(H)2
GATE(L)2
V
CC
R
OSC
IS+2
V
FB+2
V
FB- 2
COMP2
NCP5424
AWLYWW
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Hiccup Mode Current Limit (Controller 1)
Cycle-to-Cycle Current Limit (Controller 2)
Programmable Soft Start
100% Duty Cycle for Enhanced Transient Response
150 kHz to 600 kHz Programmable Frequency Operation
Switching Frequency Set by Single Resistor
Out-Of-Phase Synchronization Between the Channels Reduces the
Input Filter Requirement
鈥?/div>
Undervoltage Lockout
Applications
A
WL
Y
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
NCP5424D
NCP5424DR2
Package
SO-16
SO-16
Shipping
48 Units/Rail
2500 Tape & Reel
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Video Graphics Card
DDR Memory
High Current (Two-Phase) Power Supplies
Dual Output DC-DC Converters
漏
Semiconductor Components Industries, LLC, 2003
1
June, 2003 - Rev. 3
Publication Order Number:
NCP5424/D

NCP5424DR2 產(chǎn)品屬性

  • 2,500

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電流/電壓模式，V²?

  • 1

  • 750kHz

  • 100%

  • 10.8 V ~ 13.2 V

  • 是

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 0°C ~ 70°C

  • 16-SOIC（0.154"，3.90mm 寬）

  • 帶卷 (TR)

  • NCP5424DR2OSTR

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