Press Center
 
Home About us Products Support Quality & Certification Career Contact us
• Power Management
    Linear Regulators
    Low Dropout Linear Regulators
    DDR Termination Regulators
    Shunt Reference Regulators
    Step Down Switching Regulators
    Switching Regulator
    Step-Up DC-DC Converter
    PWM Controller
    White LED Driver
    Supervisory Circuit
    Voltage Detection and System R
    USB Power Switch
    Power Factor Control
    Li-Battery Protection or Charg
    FET Bias Controllers
    Combo IC
    Inverting DC-DC Converter
• Amplifier / Comparator
    Audio Amplifiers
    Operational Amplifier
    Voltage Comparator
• Analog Switches
    Video Signal Switch
    Analog Multiplexers, Demultipl
• Hall ICs
• Special Application ICs
    Motor Controller IC
    Interface and Driver Circuit
    Telecommunication Circuit
    Melody IC
    Alarm /Sound Generator IC
    Remote Controller IC
    Television Circuit
    Leakage Current Detector
    Automotive IC
    A-D or D-A Converters
    Miscellaneous
    Radio and Cassette Recorder Ci
    Timer
    Mouse&Keyboard Controller
    Transient Voltage Suppressors
    Sense Monitor
    Video Filter
    ZCB snubber
• Logic
• TRANSISTORs
• MOSFETs
    JFET
    Power Mosfet
• TRIACs
• SCRs
• DIODEs
 
Home >
SR2803 Datasheet
330KHZ, 3A SYNCHRONOUS BUCK CONTROLLER
 
 


DESCRIPTION
 
 
The UTC SR2803 is a synchronous buck regulator.   The device provides 3A of continuous load current over a wide input voltage of 4V~28V. Current mode control provides fast transient response
and cycle by cycle current limit. Integrates soft start, and shutdown mode.
The UTC SR2803 can provide low-ripple power, high
efficiency, and perfect transient characteristics. The duty ratio varies linearly from 0% to 92% in the PWM control. The error amplifier circuit and soft-start circuit included in this device can prevent overshoot at startup. An enable function, an over current
protect (OCP) function and short circuit protect (SCP) are also build inside, and when OCP happens, the operation frequency will be reduced.
 
 
FEATURES
 
 
* Input voltage varies from 4V ~ 28V
* Output voltage varies from 0.8V to VCC
* Duty ratio varies from 0% to 92% PWM control
* With 330kHz typical oscillation frequency  
* Thermal shutdown and SCP function and soft-start, current limit, enable function
* Low ESR output capacitor(Multi-layer chip capacitor) application
* Halogen Free
About us  |  Products  |  Contact us
Copyright 2011 UTC All received