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BQ76PL455A-Q1 Datasheet(PDF) 21 Page - Texas Instruments |
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BQ76PL455A-Q1 Datasheet(HTML) 21 Page - Texas Instruments |
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21 / 130 page  TOP VP VDIG V10VAO KEY: VP Power Domain VDIG Power Domain VM Power Domain VM Monitor REF2 TOP V10VAO Power Domain VM VSENSEn VSENSEn-1 Window Comparators VSENSE ... TOP TSD LDO TSENSE Balancing Control Circuits Control Registers Cell AFE/ Mux V Measurement MODULE 21 bq76PL455A-Q1 www.ti.com SLUSC51B – APRIL 2015 – REVISED DECEMBER 2015 Product Folder Links: bq76PL455A-Q1 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Feature Description (continued) Figure 15. Analog Die Power Domains 7.3.1.1.1 TOP Pin Connection The bq76PL455A-Q1 has a connection from the top of the cell-module battery stack to the TOP pin, typically through an external-series resistor and capacitor to GND forming a low-pass filter. The low-pass filter design typically has a similar time constant to the VSENSE input pins. The minimum recommended values are 100 Ω and 0.1 µF. See the Application and Implementation section for details. 7.3.1.1.2 V10VAO V10VAO is an internal-only, always on, pre-regulator supplied from the TOP pin. It supplies the power to the V5VAO block, Analog Die TSD block, and VP control and regulator circuits. It is not externally accessible. 7.3.1.1.3 V5VAO V5VAO is the always-on power supply that ensures power is supplied to the differential communications circuits (COMML+/–) and the WAKEUP input at all times. This ensures that the IC always detects the WAKEUP signal and the differential communications receive the WAKE tone. The V5VAO is supplied by a combination of an internal regulator and the VDIG supply. If VDIG falls below the normal operating voltage (during startup), the internal regulator supplies V5VAO. Once VDIG reaches regulation, V5VAO is supplied directly from VDIG. |
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