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NCP5425DBR2 Datasheet

  • NCP5425DBR2

  • Dual Synchronous Buck Controller

  • 22頁(yè)

  • ONSEMI

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NCP5425
Dual Synchronous
Buck Controller
The NCP5425 is a highly flexible dual buck controller with internal
gate drivers that can be used with two input power supplies and one or
two outputs in multiple configurations. The part contains all the
circuitry required for two independent synchronous dual NFET buck
regulators utilizing a feed forward voltage mode control method. The
NCP5425 can run from a single supply ranging from 4.6 to 12 volts
and support a single two phase or dual single phase outputs. When
used as a dual output controller, the second output tracks voltage
transients from the first. Power blanking for low noise applications is
supported as well as independent cycle鈭抌y鈭抍ycle current limiting. The
part is available in a 20 pin TSSOP package allowing the designer to
minimize PCB area.
Features
http://onsemi.com
20
TSSOP鈭?0
DB SUFFIX
CASE 948E
1
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Operation Over 4.6 to 13.2 Volts
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Dual Synchronous Buck Design
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Configurable as a Single Two Phase Output or Two Single Phase
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Outputs
Programmable Power Sharing and Budgeting from Two Independent
Supplies
0.8 Volt
"1%
Reference for Low Voltage Outputs
1.5 A Peak Power Drive
Switch Blanking for Noise Sensitive Applications through use of
R
OSC
Pin
Programmable Frequency, 150 kHz to 750 kHz Operation
Programmable Soft Start
Cycle鈭抌y鈭扖ycle Overcurrent Protection
Independent Programmable Current Limits
100% Duty Cycle for Fast Transient Response
Internal Slope Compensation
Out鈭抩f鈭扨hase Synchronization between the Controllers
Input Undervoltage Lockout
On/Off Enable through use of the COMP Pins
Power Supply Sequencing
PIN CONNECTIONS AND
MARKING DIAGRAM
1
GATEH1
GATEL1
GND
BST
NC
NC
IS+1
IS鈭?
V
FB1
COMP1
A
WL
Y
WW
20
GATEH2
GATEL2
V
CC
R
OSC
MODE
IS鈭?
IS+2
V
REF2
V
FB2
COMP2
NCP
5425
AWLYWW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
NCP5425DB
NCP5425DBR2
Package
TSSOP鈭?0
TSSOP鈭?0
Shipping
鈥?/div>
61 Units/Rail
2500 Units/Reel
Applications
鈥?/div>
DDR Memory Power
鈥?/div>
Graphics Cards
鈥燜or information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
漏
Semiconductor Components Industries, LLC, 2005
1
January, 2005 鈭?Rev. 6
Publication Order Number:
NCP5425/D

NCP5425DBR2 產(chǎn)品屬性

  • 2,500

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電壓模式

  • 2

  • 938kHz

  • 100%

  • 4.75 V ~ 13.2 V

  • 是

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 0°C ~ 125°C

  • 20-TSSOP（0.173"，4.40mm 寬）

  • 帶卷 (TR)

  • NCP5425DBR2OS

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