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AD8452 Datasheet(PDF) 10 Page - Analog Devices |
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AD8452 Datasheet(HTML) 10 Page - Analog Devices |
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10 / 35 page  Data Sheet AD8452 Rev. 0 | Page 9 of 34 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 48 47 46 45 44 43 42 41 40 39 38 37 35 34 33 30 31 32 36 29 28 27 25 26 2 3 4 7 6 5 1 8 9 10 12 11 ISREFH 13 FREQ 14 15 16 17 18 19 20 21 22 23 24 AD8452 TOP VIEW (Not to Scale) DMAX SS DT DGND DH DL VIN VREG SCFG SYNC CLFLG ISREFL ISREFLS ISVP ISVN BVP BVPS BVN BVNS BVREFL BVREFLS BVREFH Figure 2. Pin Configuration Table 8. Pin Function Descriptions Pin No. Mnemonic Type1 Description 1 ISREFH Input Reference Input for the Current Sense Amplifier. Connect this pin to the VREF pin to shift the current-sense instrumentation amplifier output by 12.5 mV. Otherwise, connect this pin to the ISREFL pin. 2 ISREFL Input Reference Input for the Current Sense Amplifier. The default connection is to ground. 3 ISREFLS Test Kelvin Sense Pin for the ISREFL Pin. 4 ISVP Input Current Sense Instrumentation Amplifier Positive (Noninverting) Input. Connect this pin to the high side of the current sense shunt. 5 ISVN Input Current Sense Instrumentation Amplifier Negative (Inverting) Inputs. Connect this pin to the low side of the current sense shunt. 6 BVP Input Battery Voltage Difference Amplifier Positive (Noninverting) Input. 7 BVPS Test Kelvin Sense Pin for the Battery Voltage Difference Amplifier Input, BVP. 8 BVN Input Battery Voltage Difference Amplifier Negative (Inverting) Input. 9 BVNS Test Kelvin Sense Pin for the Battery Voltage Difference Amplifier Input, BVN. 10 BVREFL Input Reference Input for the Voltage Sense Difference Amplifier. The default connection for this pin is to ground. 11 BVREFLS Test Kelvin Sense Pin for the BVREFL Pin. 12 BVREFH Input Reference Input for the Difference Amplifier. Connect to the VREF pin to level shift VBVMEA by approximately 12.5 mV. Otherwise, connect this pin to the BVREFL pin. 13, 21 AVEE N/A Analog Negative Supply Pins. 14 VSET Input Scaled CV Loop Control Input for Battery Charge or Discharge Cycle. 15 VVP0 Input Noninverting CV Loop Filter Amplifier Input for Discharge Mode. 16 BVMEA Output Scaled Battery Voltage, Difference Amplifier Output. 17 VSETB Output Buffered VSET Voltage. 18 VVE0 Input Inverting Input of the CV Loop Filter Amplifier When in Discharge Mode. 19 VVE1 Input Inverting Input of the CV Loop Filter Amplifier When in Charge Mode. 20, 41 VINT Output Aggregated Result of the Battery Voltage and Current Sense Integration. 22 MODE Logic input Logic Level Input to Select between Charge and Discharge Modes. Bring this pin low for discharge mode, and bring this pin high for charge mode. 23 EN Logic input Logic Level Enable Input. Drive EN logic low to shut down the device. Drive EN logic high to turn on the device. 24 FAULT Logic input External Fault Comparator Connection. When not connected, this pin is pulled up using a 10 kΩ resistor to the VREG pin. The DH and DL drivers are disabled when FAULT is low, and are enabled when FAULT is high. |
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