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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ACT2861QI 데이터시트(PDF) 5 Page - Active-Semi, Inc |
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ACT2861QI 데이터시트(HTML) 5 Page - Active-Semi, Inc |
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5 / 91 page  ACT2861QI Rev 2.0, 27-Apr-2018 Innovative PowerTM www.active-semi.com ActiveSwitcherTM is a trademark of Active-Semi Copyright © 2018 Active-Semi, Inc. 5 PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 AGND Analog Ground. Kelvin connect AGND to the PGND plane. 2 TH Battery temperature sensing input. Connect a negative temperature coefficient ther- mistor from TH to AGND. This pin provides a constant current output and the voltage at this pin is used for temperature calculation. If temperature sensing is not used, leave TH open and set register bit “DIS_TH” to a 1 3 INTBP Internal Voltage Bypass - Connect a 100nF ceramic capacitor between INTBP and AGND 4 VREG Internal VREG LDO output. The output voltage is programmable from 2V to 5V. Con- nect a 1.0uF between VREG and AGND. The maximum current capability for this pin is 100mA. 5, 20 PGND Power Ground. Connect to large ground plane on PCB with thermal vias. 6 SDA I2C Data Input and Output. Needs an external pull up resistor. 7 SCL I2C Clock Input. Needs an external pull up resistor. 8 nOTG OTG Enable Input. The OTG mode is active when this pin is pulled low and the EN_OTG bit = 1. In OTG mode, the converter works in reverse operation mode, and power is transferred from battery to VIN. 9 SHIPM Shipping Mode input. Shorting this pin to GND for 32ms enables the IC. If not used, connect SHIPM to AGND. 10 nIRQ Interrupt Open-Drain Output. nIRQ goes low to indicate a fault condition. nIRQ is referenced to AGND. 11 OLIM Output Fast charge current setting pin. Connect a resistor from OLIM to AGND to program the output current in normal charge mode. 12 VBATS VBAT Sense Input – Kelvin connect close the battery to sense the battery voltage. 13 OSRN Output current sense resistor negative input. 14 OSRP Output current sense resistor positive input. 15 HSB2 High Side Bias Boot-strap pin. This provides power to the internal high-side MOSFET gate driver circuitry. Connect a 47nF capacitor from HSB2 to SW2 pin 16, 17 VBAT Charging Power Output pin. Connect this pin to 22uF-100uF ceramic capacitors placed as close to the IC as possible. 18, 19, 33 SW2 Power switching output to external inductor. 21, 22, 34 SW1 Power switching output to external inductor. 23, 24, 35 VIN Input voltage pin. Place a 22uF to 44uF decoupling capacitor between VIN and PGND. 25 HSB1 High Side Bias Boot-strap pin. This provides power to the internal high-side MOSFET gate driver circuitry. Connect a 47nF capacitor from HSB1 to SW1 pin 26 ISRP Input current sense resistor positive input. 27 ISRN Input current sense resistor negative input 28 nCHG Open drain charge status indicator. nCHG = L indicates charging is in progress. nCHG = HI-Z indicates charge complete or charger disabled. nCHG = H to L at 1Hz indicates a fault condition. 29 ILIM Input current limit and OTG output current setting pin. Connect a resistor from ILIM to AGND to program the input current when operating in normal mode and to program the output current when operating in OTG Mode. |
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