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 > Low Dropout Linear Regulators
LXXLD30 Datasheet

0.8V REFERENCE ULTRA LOW DROPOUT LINEAR REGULATOR

 
 
DESCRIPTION
 
The UTC LXXLD30 is a typical LDO with the features of very low
dropout voltage as low as 0.2V at output current 3A.
       For normal operation, two supply voltages are necessary. One
called control voltage from other equipment can shutdown the output
voltage and it should pull and hold the voltage of EN pin less than
0.3V. Another one is the main supply voltage whose purpose is for
main power conversion, to keep the power dissipation low, and to
make the dropout voltage lower.
Internally, in the UTC LXXLD30, there’re many functions which
can be seen in the block figure to prevent the IC from being
damaged. Internal Power-On-Reset (POR) circuit can control the two
supply voltages to prevent fault operations of the circuit; the thermal
shutdown circuit is able to protect the device from over thermal
operation, and a current limit function will keep the device work safely under current over-loads.  
The UTC LXXLD30 can be used as an ideal to provide well
supply voltage in the applications, such as front-side-bus termination
on motherboard, NB applications, front side bus VTT (1.2V/3A) and note book PC applications.
 


 
FEATURES
 
* Low Dropout VD=0.25V(typ.)@ IOUT=3A 
* Low ESR Output Capacitor  
* VREF=0.8V 
* ±1.5% over Line, Load and Temperature Output Accuracy
* Fast Transient Response
* Output Voltage Adjustable through External Resistors
* POR(Power-On-Reset) controlling VCNTL and VIN 
* With internal Soft-Start
* Internal Current Limit Protection
* Internal Under Voltage Protection
* Hysteretic Thermal Shutdown  
* With Power-OK Output (with a Delay Time)
* For Standby or Suspend Mode: Shutdown
About us  |  Products  |  Contact us
Copyright 2011 UTC All received