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2 A, 2 MHz, Vout = 3.3 V, high-efficiency dual-mode buck-boost DC-DC converter based on the STBB3J

Quantity $ per Unit Savings
1 - 2$39.200%
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Parameter NameParameter Value
Target ApplicationDC-DC Topologies
Core ProductSTBB3J
Packing TypeNot Applicable
RoHs compliantEcopack2
Package NameCARD

The STEVAL-ISA141V1 evaluation board is based on the STBB3J fixed-frequency, high-efficiency, buck-boost DC-DC converter providing 1.2 to 5.5 V output voltages starting from a 1.8 to 5.5 V input voltage.

The device can operate with input voltages higher than, equal to, or lower than the output voltage making the product suitable for cell lithium-ion applications where the output voltage is within the battery voltage range.

The MODE pin allows selecting between auto mode and forced PWM mode, taking advantage of either a lower power consumption or the best dynamic performance.

Key features
  • Input voltage range from 1.8 V to 5.5 V
  • 2 A output current at 3.3 V in buck mode (VIN = 3.6 V to 5.5 V)
  • 800 mA output current at 3.3 V in boost mode (VIN 2.0 V)
  • Typical efficiency higher than 94%
  • ±2% DC feedback voltage tolerance
  • Automatic transition between step-down and boost mode
  • Adjustable output voltage from 1.2 V to 5.5 V
  • Power save mode (PS) at light load
  • 2.0 MHz fixed switching frequency
  • Adjustable switching frequency up to 2.4 MHz (external synchronous square signal)
  • Device quiescent current less than 50 µA
  • Load disconnect during shutdown
  • Shutdown and soft-start functions
  • Shutdown current <1 A
  • Available in Flip-Chip 20, pitch = 0.4 mm
  • RoHS compliant