參數(shù)資料
      型號: TC1313-TB2EMFTR
      元件分類: 穩(wěn)壓器
      英文描述: 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
      封裝: 3 X 3 MM, 0.90 MM HEIGHT, PLASTIC, DFN-10
      文件頁數(shù): 1/32頁
      文件大?。?/td> 591K
      代理商: TC1313-TB2EMFTR
      2009 Microchip Technology Inc.
      DS21974B-page 1
      TC1313
      Features
      Dual-Output Regulator (500 mA Buck Regulator
      and 300 mA Low-Dropout Regulator (LDO))
      Total Device Quiescent Current = 57 A (Typical)
      Independent Shutdown for Buck and LDO
      Outputs
      Both Outputs Internally Compensated
      Synchronous Buck Regulator:
      - Over 90% Typical Efficiency
      - 2.0 MHz Fixed-Frequency PWM
      (Heavy Load)
      - Low Output Noise
      - Automatic PWM-to-PFM mode transition
      - Adjustable (0.8V to 4.5V) and Standard
      Fixed-Output Voltages (0.8V, 1.2V, 1.5V,
      1.8V, 2.5V, 3.3V)
      Low-Dropout Regulator:
      - Low-Dropout Voltage = 137 mV Typical @
      200 mA
      - Standard Fixed-Output Voltages
      (1.5V, 1.8V, 2.5V, 3.3V)
      Small 10-pin 3x3 DFN or MSOP Package Options
      Operating Junction Temperature Range:
      - -40°C to +125°C
      Undervoltage Lockout (UVLO)
      Output Short Circuit Protection
      Overtemperature Protection
      Applications
      Cellular Phones
      Portable Computers
      USB-Powered Devices
      Handheld Medical Instruments
      Organizers and PDAs
      Description
      The TC1313 device combines a 500 mA synchronous
      buck regulator and 300 mA Low-Dropout Regulator
      (LDO) to provide a highly integrated solution for
      devices that require multiple supply voltages. The
      unique combination of an integrated buck switching
      regulator and low-dropout linear regulator provides the
      lowest system cost for dual-output voltage applications
      that require one lower processor core voltage and one
      higher bias voltage.
      The 500 mA synchronous buck regulator switches at a
      fixed frequency of 2.0 MHz when the load is heavy,
      providing a low-noise, small-size solution. When the
      load on the buck output is reduced to light levels, it
      changes operation to a Pulse Frequency Modulation
      (PFM) mode to minimize quiescent current draw from
      the battery. No intervention is necessary for smooth
      transition from one mode to another.
      The LDO provides a 300 mA auxiliary output that
      requires a single 1 F ceramic output capacitor,
      minimizing board area and cost. The typical dropout
      voltage for the LDO output is 137 mV for a 200 mA
      load.
      The TC1313 device is available in either the 10-pin DFN
      or MSOP package.
      Additional
      protection
      features
      include:
      UVLO,
      overtemperature and overcurrent protection on both
      outputs.
      For a complete listing of TC1313 standard parts,
      consult your Microchip representative.
      Package Type
      10-Lead DFN *
      10-Lead MSOP
      1
      2
      6
      8
      7
      9
      10
      5
      4
      3
      SHDN2
      VIN2
      VOUT2
      AGND
      PGND
      LX
      VIN1
      SHDN1
      VFB1/VOUT1
      NC
      VOUT2
      VIN2
      NC
      LX
      VIN1
      1
      2
      3
      4
      10
      9
      8
      7 SHDN1
      PGND
      SHDN2
      EP
      11
      5
      6 VFB1/VOUT1
      AGND
      * Includes Exposed Thermal Pad (EP); see Table 3-1.
      500 mA Synchronous Buck Regulator,
      + 300 mA LDO
      相關(guān)PDF資料
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