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Overview
| Topology | Buck-Boost Converter |
| Input voltage | 4-29 V |
| Switching frequency | 125-1000 kHz |
Description
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.
Features
- 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
Typical applications
- Solar Powered Devices
- Car Charger / 24V Industrial Applications / Multiple Power Source Supplies /DC UPS
- Multi Cell Battery Charger / Power Bank
- Automotive Power Systems
- Portable Battery-Powered Devices
- Solid-State Lighting
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Wire Section | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | Pitch (mm) | Ø D (mm) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | Pins | Rows | Gender | Type | IR (A) | Packaging | Color | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691214110002S | SPEC | – | 6 files | WR-TBL Series 2141S - 3.50 mm Horizontal Entry Modular w. Rising Cage Clamp | Rising Cage Clamp | PCB | Yes | 30 to 16 (AWG) 0.05 to 1.31 (mm²) | – | – | – | – | – | – | – | – | – | – | – | -30 °C up to +120 °C | – | – | – | 7 | – | – | – | – | – | – | – | – | THT | – | -30 °C up to +120 °C | – | – | 3.5 | – | – | – | – | – | – | 2 | – | – | Horizontal | 10 | Box | – | |
 | 150060VS75000 | SPEC | 6 files | WL-SMCW SMT Mono-color Chip LED Waterclear | – | – | – | – | 570 | Bright Green | 572 | 40 | 2 | AlInGaP | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | – | – | – | – | – | – | – | SMT | – | -40 °C up to +85 °C | – | – | – | – | 0.7 | – | – | – | – | – | – | – | – | – | Tape and Reel | – | ||
 | 860010675020 | SPEC | 7 files | WCAP-ATG8 Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | – | 470 µF | ±20% | 50 | – | – | 10 | – | – | 20 | – | – | – | – | – | – | – | – | – | 2000 | -40 °C up to +85 °C | 828 | 235 | 5 | 10 | – | – | – | – | – | – | – | – | – | – | Ammopack | – | ||
 | 885012206020 | SPEC | 8 files | WCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | – | – | – | – | – | 100 nF | ±10% | 10 | 0603 | -55 °C up to +125 °C | 5 | 5 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | – | ||
| 885012206026 | SPEC | 8 files | WCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | – | – | – | – | – | 1 µF | ±10% | 10 | 0603 | -55 °C up to +125 °C | 10 | 0.1 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | – | ||
| 885012206075 | SPEC | 8 files | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | – | – | – | – | 470 nF | ±10% | 25 | 0603 | -55 °C up to +125 °C | 10 | 1.1 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | – | ||
| 885012206093 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | 47 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 3 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | – | ||
 | 430481035816 | SPEC | – | 6 files | WS-TASV SMT Washable Tact Switch 6x6 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | 12 | – | -40 °C up to +85 °C | – | 100 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3.5 | 160 | 1000000 | Black | not specified | – | – | – | – | 0.05 | Tape and Reel | – | |
 | 60900213421 | SPEC | – | 3 files | WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | 1000 MΩ | – | 2.44 | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.54 | – | – | – | – | – | – | 1 | – | Jumper | – | 3 | Bag | Black | |
 | 61300111121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 2.54 | – | – | – | – | – | – | – | – | THT | – | – | – | – | 2.54 | – | – | – | – | – | – | 1 | Single | Pin Header | Straight | 3 | Bag | – | |
| 61300211121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 5.08 | – | – | – | – | – | – | – | – | THT | – | – | – | – | 2.54 | – | – | – | – | – | – | 2 | Single | Pin Header | Straight | 3 | Bag | – | |
| 61300311121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 7.62 | – | – | – | – | – | – | – | – | THT | – | – | – | – | 2.54 | – | – | – | – | – | – | 3 | Single | Pin Header | Straight | 3 | Bag | – | |
 | 744373965220 | SPEC | 8 files | WE-LHMI SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1365 | -40 °C up to +125 °C | – | – | – | 13.65 | 12.5 | – | 22 | 6.5 | 6.7 | 13.9 | 37 | 5.4 | SMT | – | – | – | – | – | – | 6.2 | – | – | – | – | – | – | – | – | – | – | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Wire Section | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | Pitch (mm) | Ø D (mm) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | Pins | Rows | Gender | Type | IR (A) | Packaging | Color | Samples |
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