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NCP1589L: Synchronous Buck Controller, Low Voltage, with Light Load Efficiency and Transient Enhancement

Datasheet: Synchronous Buck Controller, Low Voltage, with Light Load Efficiency and Transient Enhancement
Rev. 2 (126.0kB)
Product Overview
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The NCP1589L is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V and converting voltage from as low as 2.5 V. It is easy to operate and provides an optimal level of integration to reduce size and cost of the power supply. It operates in Ramp Pulse Modulation mode for superior load step and release response. In addition to fast transient response, it also includes a 1.5 A gate driver design and light load efficiency features such as adaptive nonoverlap circuitry and diode emulation. It normally operates at a range of 200~500 kHz in continuous current conduction mode, which reduces with current at light load for further power saving. Protection features include programmable overcurrent protection, output overvoltage and undervoltage protection and input undervoltage lockout.
Features
 
  • VCC Range from 4.5 V to 13.2 V
    Adjustable Operating frequency
    Boost Pin Operates to 35 V
    Ramp Pulse Modulation Control
    Precision 0.8 V Internal Reference
    Adjustable Output Voltage
    Internal 1.5 A Gate Drivers
    Input Under Voltage Lockout
    Programmable Current Limit
    Adaptive Diode Mode Emulation in Light Load
    This is a PbFree Device
Applications
  • Graphics Cards
    Desktop Computers
    Servers / Networking
    DSP & FPGA Power Supply
    DCDC Regulator Modules
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Application Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1589LMNTWG Active
Pb-free
NCP1589L DFN-10 485C 1 260 Tape and Reel 3000 $0.32
Market Leadtime (weeks) : 13 to 16

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Phases
Control Mode
VCC Min (V)
VCC Max (V)
fSW Typ (kHz)
Package Type
NCP1589LMNTWG  
 $0.32 
Pb
 Active   
Step-Down
4.5
13.2
DFN-10
Case Outlines
485C   
NCP1589L: Synchronous Buck Controller, Low Voltage, with Light Load Efficiency and Transient Enhancement
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