UC2578DPTR by Texas Instruments | APACDC to DC Controller | Avnet ASIA

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信息

UC2578DPTR

Texas Instruments

DC DC Cntrlr Single-OUT Step Down 14V to 72V Input 16-Pin SOIC T/R

製造商產品編號: UC2578DPTR

替代料號: UC2578DPTR


legend 通過RoHS認證

描述

文檔

替代/替換

資料

The UC3578 is a PWM controller with an integrated high side floating gate driver. It is used in buck step down converters and regulates a positive output voltage. Intended to be used in a distributed power system, the IC allows operation from 14V to 72V input voltage which range includes the prevalent telecomm bus voltages. The output duty cycle of the UC3578 can vary between 0% and 90% for operation over the wide input voltage and load conditions.

The UC3578 simplifies the design of the single switch PWM buck converter by incorporating a floating high side driver for an external N-channel MOSFET switch. It also features a 100kHz fixed frequency oscillator, an internal 2V precision reference, an error amplifier configured for voltage mode operation, and a PWM comparator with latching logic. Complementing the traditional voltage mode control block, the UC3578 incorporates an overcurrent shutdown circuit with full cycle soft re-start to limit the input current to a user defined maximum value during overload operation.Additional functions include an under voltage lockout circuit to insure that sufficient input supply voltage is present before any switching activity can occur.

The UC2578 and the UC3578 are both available in surface mount and thru-hole power packages.

技術參數

  • Provides Simple Single Inductor Buck PWM Step-Down Voltage Regulation
  • Drives External High Side NMOS Switch
  • 14V to 72V Input Voltage Operating Range
  • Contains 100kHz Internal Oscillator, 2V Reference and UVLO
  • Soft Start on Power Up
  • Overcurrent Shutdown Followed by Soft Start
  • 技術屬性

    描述
    尋找類似物料
    Mounting
    Surface Mount
    MSL Level
    2
    Number of Outputs
    1
    Operating Supply Voltage
    14 to 72 V
    Operating Temperature
    -40 to 85 °C
    Input Voltage
    14 to 72 V
    Type
    Step Down
    Supplier Package
    SOIC
    Screening Level
    Industrial
    Pin Count
    16
    Max Processing Temp
    260
    Lead Finish
    Gold
    Product Dimensions
    10 x 4 x 1.5 mm

    ECCN/UNSPSC

    描述
    ECCN:
    EAR99
    計劃交貨期 B:
    8542390000"
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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