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
    Radio and Cassette Recorder Ci
    Mouse&Keyboard Controller
    Transient Voltage Suppressors
    Sense Monitor
    Video Filter
    ZCB snubber
• Logic
    Power Mosfet
• SCRs
Home >
LR3XXYYB Datasheet


The UTC LR3XXYYB are CMOS voltage regulator ICs that
have high output voltage accuracy, low dropout, low supply current,
and high ripple rejection. Every voltage regulator IC of UTC
LR3XXYYB series consists of an error amplifier, a voltage reference
unit, a current limit circuit, resistors for setting output voltage, and a
chip enable circuit.
Due to built-in transistor with low ON resistance and a chip
enable function these ICs perform with low dropout voltage prolongs
the battery life of each system. The load transient response and line
transient response of the UTC LR3XXYYB Series are excellent, so
these ICs are suitable for hand-held communication equipment power supply.

* Low supply current: Typ. 60µA
* Standby mode: Typ. 0.1µA
* Low dropout voltage
* High ripple rejection
* Low temperature-drift coefficient of output voltage
* Excellent line regulation
* High output voltage accuracy
* Output voltage stepwise setting with a step of 0.1V in the range of 1.5V ~ 3.3V is possible
* Built-in fold-back protection circuit Typ. 40mA (current at short mode)
* Ceramic capacitor is recommended. (1.0µF or more)
* Halogen Free  
About us  |  Products  |  Contact us
Copyright 2011 UTC All received