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2.5-A, high efficiency buck-boost converter with optimized load-step response

Availability: 4,794


Package | PIN: DSBGA (YFF) | 15
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.49
10-24 $2.23
25-99 $2.07
100-249 $1.80
250-499 $1.66
500-749 $1.40
750-999 $1.15
1000+ $1.05


  • Input voltage range: 1.3 V to 5.5 V
    • Device input voltage > 1.8 V for start-up
  • Output voltage range: 1.8 V to 5.2 V (adjustable)
  • 2-A Output current for VI ≥ 2.3 V, VO = 3.3 V
  • High efficiency over the entire load range
    • 11-µA Operating quiescent current(TPS63805)
    • Power save mode and mode selection for forced PWM-mode
  • 180-mV load-step response at a 2 A current step (TPS63806)
  • Up to 2.5 A transient output current support (TPS63806)
  • Peak current buck-boost mode architecture
    • Defined transition pointsbetween buck, buck-boost and boost operation modes
    • Forwardand reverse current operation
    • Start-up into pre-biasedoutputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature- andovervoltage-protection
    • True shutdown function with loaddisconnect
    • Forward and backward currentlimit
  • Small solution size of 18.5 mm2 (TPS63805)
    • Small 0.47 µHinductor
    • Works with 22 µF minimum outputcapacitor

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Texas Instruments  TPS63806YFFR

The TPS63805 and TPS63806 are high efficiency, high output current buck-boost converters. It is used when the input voltage is higher, equal, or lower than theoutput voltage. Continuous output currents up to 2 A are supported over a wide voltage rangefor both devices. The deviceslimit the peak current during all operation modes.They automaticallychange from buck to boost operation based on the inputvoltage. They remain in a 4-cycle buck-boost mode when the input voltage isapproximately equal to the output voltage. The output voltages for the devices are individually adjusted by a resistive divider. The transitions betweenmodes happen at defined thresholds and avoids unwanted toggling within the modes.

The TPS63805 andTPS63806 comein a 1.4 mm x 2.3 mm package. The device works with tiny passive components tokeep the overall solution size small.