SMB1398 Auxiliary Converter for Wireless Charging
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SMB1398
SMB1398

High Voltage Combo Divide by 2 Charge Pump and 3-level-buck for high efficiency single and dual cell battery charging.

The SMB1398 is an auxiliary converter designed for 1SnP/2SnP high current wireless/cable charging applications. SMB1398’s 21.5-Vin/6-A Iout compatibility enables it to function as a parallel charger or as a pre-regulator when paired with Qualcomm Technologies, Inc. (QTI) comprehensive selection of stand-alone chargers. The SMB1398 features QTI’s proprietary adaptive combination of (COMBO) topologies architecture which allows it to transition between two modes of operation - inductive three-level buck mode and 2:1 (DIV2) switched capac...

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Features

  • Dual/ triple parallel charging ready when paired with QTI battery charging PMIC devices
  • Dual inputs enabling system to be charged from either USB or Wireless inputs
  • 96.7% efficiency with a 6 A load in Div2 mode/ 95% efficiency with a 6 A load in 3-level buck
    mode
  • Pass-through charging (1:1) capable in both 1S and 2S applications
  • Comprehensive protection features
  • Input voltage support of 3.7V to 21.5V
  • Compatible with Quick Charge 3, 3+, 4 and 4+ technologies via software
  • Programmable 0.5A to 5A input current (battery charge current = 2x input current) with 50mA/step
  • Comprehensive protection features
  • Remote USB input voltage sense
  • External OVP FET control that provides surge protection up to 350V
  • WLSP package with 0.35mm pitch
Specifications
Package
Type
WLSP
Pitch
0.35 mm
Part
Part Number(s)
SMB1398
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