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BQ25619 Arkusz danych(PDF) 4 Page - Texas Instruments |
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BQ25619 Arkusz danych(HTML) 4 Page - Texas Instruments |
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4 / 59 page  BQ25619 1 2 3 4 5 6 15 14 13 16 17 23 22 21 20 19 7 8 9 10 11 12 18 24 VAC PSEL PMID_GOOD STAT SCL SDA BAT BAT SYS SYS PGND PGND 4 BQ25619 SLUSDF8A – JUNE 2019 – REVISED JULY 2019 www.ti.com Product Folder Links: BQ25619 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated 6 Pin Configuration and Functions BQ25619 RTW Package 24-Pin WQFN Top View (1) AI = Analog input, AO = Analog Output, AIO = Analog input Output, DI = Digital input, DO = Digital Output, DIO = Digital input Output, P = Power Pin Functions PIN TYPE(1) DESCRIPTION NAME NO. BAT 13 P Battery connection point to the positive terminal of the battery pack. The internal current sensing resistor is connected between SYS and BAT. Connect a 10 µF closely to the BAT pin. 14 BATSNS 10 AIO Battery voltage sensing pin for charge voltage regulation. in order to minimize the parasitic trace resistance during charging, BATSNS pin is connected to the positive terminal of battery pack as close as possible. If BATSNS pin is open or short to ground, BATSNS_STAT bit is set to 1 and charger regulates the battery voltage through BAT pin. BTST 21 P PWM high side driver positive supply. Internally, the BTST is connected to the cathode of the boost-strap diode. Connect the 0.047-μF bootstrap capacitor from SW to BTST. CE 9 DI Charge enable pin. When this pin is driven LOW, battery charging is enabled. GND 17 P Ground 18 INT 7 DO Open-drain interrupt output. Connect the INT to a logic rail through a 10-kΩ resistor. The INT pin sends an active low, 256-µs pulse to the host to report charger device status and fault. PMID 23 DO Boost mode output. Connected to the drain of the reverse blocking MOSFET (RBFET) and the drain of HSFET. Consider the total input capacitance, put 1 μF on VBUS to GND, and the rest capacitance on PMID to GND (typical 2x4.7 μF plus 1 nF). PMID_GOOD 3 DO Open drain active high PMID good indicator. Connect to the pull up rail REGN through 10 kΩ resistor. HIGH indicates PMID voltage is below 5.2V and the current through Q1 is below 110% of input current limit. This signal can be used to drive external PMOS FET to disconnect the PMID under charging load when boost mode output voltage is too high or output current is too high. PSEL 2 DI Power source selection input. HIGH indicates 500 mA input current limit. LOW indicates 2.4A input current limit. Once the device gets into host mode, the host can program a different input current limit to the IINDPM register. |
Podobny numer części - BQ25619_V01 |
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Podobny opis - BQ25619_V01 |
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