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2.75-V to 6-V, 2-A step-down converter with fixed Fsw and SYNC in a 2mm x 3mm wettable-flanks QFN


封装 | 引脚: RWY | 9
温度: Q (-40 to 125)
包装类型: 剪切带
数量 单价
1-9 $2.01
10-24 $1.80
25-99 $1.68
100-249 $1.46
250-499 $1.35
500-749 $1.13
750-999 $0.93
1000+ $0.85


  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1:
      –40°C to +125°CTA
  • Input Voltage Range: 2.75 V to 6 V
  • Quiescent Current 15 µA Typical
  • Output Voltage from 0.6 V to 5.5 V
  • Output Voltage Accuracy ±1% (PWM Operation)
  • Adjustable Soft-Start
  • Forced PWM or PWM/PFM Operation
  • Adjustable Switching Frequency of
    1.8 MHz to 4 MHz
  • Precise ENABLE Input Allows
    • User-Defined Undervoltage Lockout
    • ExactSequencing
  • 100% Duty Cycle Mode
  • Active Output Discharge
  • Spread Spectrum Clocking - Optional
  • Fold-back Overcurrent Protection - Optional
  • Power Good Output with Window Comparator
  • Package with Wettable Flanks

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德州仪器  XPS62812QWRWYRQ1

The TPS6281x-Q1 family is a pin-to-pin 1-A, 2-A, 3-A and 4-A synchronous step-down DC/DCconverters. All devices offer high efficiency and ease of use. The TPS6281x-Q1 family is based on apeak current mode control topology. TPS6281x-Q1 is designed for automotive applications such asInfotainment and advanced driver assistance systems. Low resistive switches allow up to 4-Acontinuous output current at high ambient temperature. The switching frequency is externallyadjustable from 1.8 MHz to 4 MHz and can also be synchronized to an external clock in the samefrequency range. In PWM/PFM mode, The TPS6281x-Q1 automatically enters Power Save Mode at lightloads to maintain high efficiency across the whole load range. The TPS6281x-Q1 provides a 1% outputvoltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy.The SS/TR pin allows setting the start-up time or forming tracking of the output voltage to anexternal source. This allows external sequencing of different supply rails and limiting the inrushcurrent during start-up.

The TPS6281x-Q1 is available as an adjustable version, packaged in a 3-mm x 2-mm VQFNpackage with wettable flanks.