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UC3845BD1R2G Integrated Circuit Chip High Performance Current Modded Controllers

Categories Integrated Circuit Chip
Brand Name: ON
Model Number: UC3845BD1R2G
Place of Origin: CHINA
MOQ: 10pcs
Price: negotiation
Payment Terms: T/T, Western Union ,paypal
Supply Ability: 10000PCS
Delivery Time: in stock 2-3days
Packaging Details: 2500/REEL
Certification: CE/ RoHS
Total Power Supply and Zener Current: 30mA
Output Current, Source or Sink (Note 1): 1.0A
Output Energy (Capacitive Load per Cycle): 5.0UJ
Current Sense and Voltage Feedback Inputs: − 0.3 to + 5.5 V
Voltage - Supply (Vcc/Vdd): 7.6 V ~ 30 V
Frequency - Switching: 500kHz
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    UC3845BD1R2G Integrated Circuit Chip High Performance Current Modded Controllers

    UC3845BD1R2G ON IC Integrated Circuit CHIP High Performance Current Mode Controllers


    High Performance Current Mode Controllers


    The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and dc−dc converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.


    Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, a latch for single pulse metering, and a flip−flop which blanks the output off every other oscillator cycle, allowing output deadtimes to be programmed from 50% to 70%.


    These devices are available in an 8−pin dual−in−line and surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage.


    The UCX844B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX845B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).



    Features
    • Pb−Free Packages are Available
    • Trimmed Oscillator for Precise Frequency Control
    • Oscillator Frequency Guaranteed at 250 kHz
    • Current Mode Operation to 500 kHz Output Switching Frequency
    • Output Deadtime Adjustable from 50% to 70%
    • Automatic Feed Forward Compensation
    • Latching PWM for Cycle−By−Cycle Current Limiting
    • Internally Trimmed Reference with Undervoltage Lockout
    • High Current Totem Pole Output
    • Undervoltage Lockout with Hysteresis
    • Low Startup and Operating Current


    Product AttributesSelect All
    ManufacturerON Semiconductor
    Series-
    PackagingTape & Reel (TR)
    Part StatusActive
    Output TypeTransistor Driver
    FunctionStep-Up, Step-Up/Step-Down
    Output ConfigurationPositive or Negative, Isolation Capable
    TopologyBoost, Flyback
    Number of Outputs1
    Output Phases1
    Voltage - Supply (Vcc/Vdd)7.6 V ~ 30 V
    Frequency - Switching500kHz
    Duty Cycle (Max)0.48
    Synchronous RectifierNo
    Clock SyncNo
    Serial Interfaces-
    Control FeaturesFrequency Control
    Operating Temperature0°C ~ 70°C (TA)
    Package / Case8-SOIC (0.154", 3.90mm Width)
    Supplier Device Package8-SOIC
    Base Part NumberUC384*B



    Deli electronics tehcnology Co.,Ltd.
    www.icmemorychip.com
    www.deli-ic.com
    Email:sales3@deli-ic.com
    Skype:hkdeli881
    Contact: VIVI-CHEN

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