Active Semi

Demoboard EVK402

30V Buck-Boost Charger with Integrated MOSFETs and OTG

Topologie: Buck-Boost
Eingangsspannung (min.): 4.00 V
Eingangsspannung (max.): 29.00 V
Schaltfrequenz (min.): 125.00 kHz
Schaltfrequenz (max.): 1000.00 kHz


The ACT2861 is a buck-boost charger with 4 integrated MOSFETs. It offers a high efficiency, low component count, compact solution for 2 to 5 cell battery charging application. It operates from an input voltage range from 4 to 29V. An advanced switch control algorithm allows the buck-boost converter to maintain output voltage regulation with input voltages that are above, below or equal to the output voltage. The ACT2861 is optimized to reduce input current in shipping, shutdown, and standby for applications which are sensitive to quiescent current draw, such as battery-powered devices. The system can be monitored and configured by I²C. The built-in ADC can be read for the information of input/output voltages and currents, and the die temperature. With an MCU, it can easily be configured to charge a multi cell battery pack from a variety of input power sources.


  • Wide VIN Range: 3.9V to 29V (No Dead Zone)
  • Supports 2 to 5 Cell Lithium-ion Batteries
  • Supports OTG Function (5V ~ 22.5V Input) with wide range of output voltages
  • OTG output supports QC3.0 / USB PD + PPS output levels and transition times
  • Programmable Frequency: 125KHz, 250KHz, 500kHz, and 1MHz
  • 2V ~ 5V/100mA Programmable Output LDO
  • Precision 0.5% Voltage Reference
  • +/-4% Output Constant Current Regulation
  • < 5 μA Leakage Current from Battery in Shipping Mode
  • Programmable Charge Voltage via I2C
  • Programmable Charge Current via Pin and I2C
  • Programmable Soft-Start
  • Programmable Safety Timer
  • Battery Path Impedance Compensation
  • JEITA Compliant
  • Cycle-by-Cycle Current Limit
  • Built in ADC for Temperature, Input and Output Voltage and Current monitoring• Thermal Regulation and Protection• 25mΩ FET from VIN to SW1• 25mΩ FET from SW2 to VOUT• 35mΩ FET from SW1 to PGND• 35mΩ FET from SW2 to PGND• Low Output Ripple• Thermally Enhanced 32-Lead 4mx4mm QFN


  Artikel Nr. SPEC Produktserie Pins Reihen Gender Typ IR 1
Verpackung λDom typ.
Farbe λPeak typ.
IV typ.
VF typ.
Chiptechnologie 50% typ.
Actuator-Farbe VPE Anwendung PCB/Kabel/Panel Modularity Wire Section L
RDC typ.
RDC max.
Montageart C
Tol. C VR
(V (DC))
Keramiktyp Technische Artikelnummer Endurance
Betriebstemperatur IRIPPLE
61300111121 PDF WR-PHD 2.54 mm THT Pin Header 1 Single Pin Header Gerade 3 Beutel
61300211121 PDF WR-PHD 2.54 mm THT Pin Header 2 Single Pin Header Gerade 3 Beutel
61300311121 PDF WR-PHD 2.54 mm THT Pin Header 3 Single Pin Header Gerade 3 Beutel
150060VS75000 PDF WL-SMCW SMT Mono-color Chip LED Waterclear 570 Hellgrün 572 40 2 AlInGaP 140
60900213421 PDF WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point 1 Jumper 3 Beutel
430481035816 PDF WS-TASV SMT Washable Tact Switch 6x6 mm 3.5 160 Schwarz 2000
691214110002S PDF WR-TBL Series 2141S - 3.50 mm Horizontal Entry Modular w. Rising Cage Clamp 2 Horizontal Rising Cage Clamp PCB Ja 30 to 16 (AWG) 0.05 to 1.31 (mm²)
744373965220 PDF WE-LHMI SMT Speicherdrossel 22 5.7 10.2 34.5 37 5.4 SMT
885012206075 PDF WCAP-CSGP MLCCs 0603 0.8 470 ±10% 25 10 X7R Klasse II X7R0603474K025DFCT10000
885012206093 PDF WCAP-CSGP MLCCs 0603 0.8 47 ±10% 50 3 X7R Klasse II X7R0603473K050DFCT10000
885012206026 PDF WCAP-CSGP MLCCs 0603 0.8 1 ±10% 10 10 X7R Klasse II X7R0603105K010DFCT10000
885012206020 PDF WCAP-CSGP MLCCs 0603 0.8 100 ±10% 10 5 X7R Klasse II X7R0603104K010DFCT10000
860010675020 PDF WCAP-ATG8 Aluminium-Elektrolytkondensatoren 470 50 10 ATBF200471M050DSPAAB000 2000 -40 °C up to +85 °C 828 235 5 10 20