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NCP5425: Dual Synchronous Buck Controller

Datasheet: Dual Synchronous Buck Controller
Rev. 9 (172.0kB)
Product Overview
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» Product Change Notification
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 mutiple 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-by-cycle current limiting. The part is available in a 20 pin TSSOP package allowing the designer to minimize PCB area.
Features
 
  • Operation Over 4.6 to 13.2 Volts
  • Dual Synchronous Buck Design
  • Programmable Power Sharing and Budgeting from Two Independent Supplies
  • 0.8 Volt +/- 1% Reference for Low Voltage Outputs
  • 1.5A Peak Power Drive
  • Switch Blanking for Noise Sensitive Applications through use of ROSC Pin
  • Programmable Frequency, 150 kHz to 750 kHz Operation
  • Programmable Soft-Start
  • Cycle-to-Cycle Overcurrent Protection
  • Independent Programmable Current Limits
  • 100% Duty Cycle for Fast Transient Response
  • Internal Slope Compensation
  • Out-of-Phase Synchronization between the Controllers
  • Configurable as a Single Two Phase Output or Two Single Phase Outputs
  • These are Pb-Free Devices
  • Input Undervoltage Lockout
  • On/Off Enable through use of the COMP Pins
  • Power Supply Sequencing
Technical Documentation & Design Resources
Data Sheets (1) FAQ (1)
Package Drawings (1)  
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP5425DBG Obsolete 
Pb-free
Halide free
NCP5425 TSSOP-20 9.48 1 260 Tube 75  
NCP5425DBR2G Active
Pb-free
Halide free
NCP5425 TSSOP-20 9.48 1 260 Tape and Reel 2500 $0.8
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Phases
Control Mode
VCC Min (V)
VCC Max (V)
fSW Typ (kHz)
Package Type
NCP5425DBR2G  
 $0.8 
Pb
H
 Active   
Step-Down
1
V2
4.75
13.2
750
TSSOP-20
Case Outlines
9.48   
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