bq24103arhlr

@@ -33,5 +33,157 @@   "author": {     "name": "Ray",     "email": "[email protected]"+  },+  "component": {+    "mpn": "BQ24103ARHLR",+    "manufacturer": "Texas Instruments",+    "package": "QFN-20-EP(3.7x4.7)",+    "pin_count": 21,+    "category": "Battery Management",+    "datasheet": "https://www.ti.com/lit/ds/symlink/bq24103arhlr.pdf",+    "parts": {+      "symbol": "bq24103arhlr.kicad_sym",+      "footprint": "bq24103arhlr.kicad_mod",+      "model_3d": "bq24103arhlr-etched.glb",+      "model_3d_plain": "bq24103arhlr.glb",+      "model_3d_step": "bq24103arhlr-etched.step",+      "model_3d_step_plain": "bq24103arhlr.step",+      "lbr": "bq24103arhlr.lbr"+    },+    "pins": [+      {+        "number": "1",+        "name": "OUT",+        "type": "power_out",+        "description": "Charge current output / inductor connection (paired with pin 20). Connect the switching inductor here; add an external Zener/TVS (e.g. MMBZ18VALT1) to PGND to clamp voltage spikes and protect the integrated power MOSFETs during abnormal conditions."+      },+      {+        "number": "2",+        "name": "STAT1",+        "type": "output",+        "description": "Charge status 1, open-drain output (10 mA max sink). Turns on to indicate charge-in-progress. Combined with STAT2 it encodes charger state (see Table 1). Typically drives a status LED with a 1.5 kΩ pull-up."+      },+      {+        "number": "3",+        "name": "IN",+        "type": "power_in",+        "description": "Charger input voltage (paired with pin 4). Connect adapter/DC input here; 20 V absolute-max, 4.35 V to 16 V recommended operating range. Both IN pins must be tied together and to VCC through the input filter."+      },+      {+        "number": "4",+        "name": "IN",+        "type": "power_in",+        "description": "Charger input voltage (paired with pin 3). Both IN pins are internally connected; tie together to the adapter rail with input bulk/bypass capacitance."+      },+      {+        "number": "5",+        "name": "PG",+        "type": "output",+        "description": "Power-good status, open-drain output (10 mA max sink). Pulls low when a valid VCC is detected; released (high-Z) in sleep mode. Can drive an LED or a host processor input via a pull-up (typ. 1.5 kΩ to VTSB or a logic rail)."+      },+      {+        "number": "6",+        "name": "VCC",+        "type": "power_in",+        "description": "Analog device supply input. Tie to IN through the input filter; requires a 0.1 µF bypass capacitor to VSS. 4.35 V to 16 V recommended, 20 V absolute-max."+      },+      {+        "number": "7",+        "name": "TTC",+        "type": "input",+        "description": "Timer and termination control. Connect a capacitor from this pin to GND to set the safety-timer period. Driving this pin low disables the safety timer and charge-termination detection. 7 V absolute-max input rating."+      },+      {+        "number": "8",+        "name": "ISET1",+        "type": "bidirectional",+        "description": "Fast-charge current set point. Connect a resistor from this pin to GND to program the fast-charge current; IREG ≈ (V(ISET1)/R(ISET1)) × K. 3.3 V absolute-max input rating."+      },+      {+        "number": "9",+        "name": "ISET2",+        "type": "bidirectional",+        "description": "Precharge and termination current set point. Set by a resistor to ground. A low-level CMODE signal (system-controlled variants) selects ISET2 rate; when the battery reaches the regulation set point the part switches to voltage regulation regardless of CMODE. 3.3 V absolute-max input rating."+      },+      {+        "number": "10",+        "name": "VSS",+        "type": "power_in",+        "description": "Analog ground. Must be connected to ground at all times. The exposed thermal pad is internally connected to VSS."+      },+      {+        "number": "11",+        "name": "VTSB",+        "type": "power_out",+        "description": "TS internal bias-regulator output. Connect a 0.1 µF to 1 µF ceramic capacitor from this pin to VSS. Used to power the NTC thermistor divider on the TS pin (and optionally the STAT/PG LED pull-ups). 3.6 V absolute-max."+      },+      {+        "number": "12",+        "name": "TS",+        "type": "input",+        "description": "Battery-temperature sense input. Its voltage is compared against internal thresholds to gate charging. Drive with an NTC thermistor (e.g. 103AT) plus a voltage divider powered from VTSB (see Figure 10). 7 V absolute-max input rating."+      },+      {+        "number": "13",+        "name": "CELLS",+        "type": "input",+        "description": "Cell-count select (available on fixed-output variants including bq24103A). Ground or float this pin for single-cell (4.2 V) operation; pull up to VCC through a resistor for two-cell (8.4 V) operation. 20 V absolute-max input rating."+      },+      {+        "number": "14",+        "name": "BAT",+        "type": "input",+        "description": "Battery-voltage sense input. Connect directly to the battery-pack positive terminal (after the sense resistor). Bypass with a 0.1 µF capacitor to PGND if the leads to the battery are long/inductive. 20 V absolute-max."+      },+      {+        "number": "15",+        "name": "SNS",+        "type": "input",+        "description": "Charge current-sense input. Battery current is sensed via the voltage drop across an external sense resistor (typ. 0.1 Ω) in series with the battery pack between SNS and BAT. Requires a 0.1 µF capacitor to PGND.|V(SNS)-V(BAT)|≤ 1 V."+      },+      {+        "number": "16",+        "name": "CE",+        "type": "input",+        "description": "Charger enable input, active-low. Drive high to suspend charging and place the device in low-power sleep mode; drive low (or leave low) to enable charging. Do NOT pull up this input to VTSB. 20 V absolute-max input rating."+      },+      {+        "number": "17",+        "name": "PGND",+        "type": "power_in",+        "description": "Power ground return for the integrated power FETs (paired with pin 18). Route with heavy copper to the input/output capacitor ground; may share a plane with VSS."+      },+      {+        "number": "18",+        "name": "PGND",+        "type": "power_in",+        "description": "Power ground return for the integrated power FETs (paired with pin 17). Tie both PGND pins together on the board."+      },+      {+        "number": "19",+        "name": "STAT2",+        "type": "output",+        "description": "Charge status 2, open-drain output (10 mA max sink). Turns on to indicate charge-done; combined with STAT1 encodes charger state (see Table 1). Typically drives a status LED via a 1.5 kΩ pull-up."+      },+      {+        "number": "20",+        "name": "OUT",+        "type": "power_out",+        "description": "Charge current output / inductor connection (paired with pin 1). Both OUT pins are internally connected and must both be routed to the output inductor. -0.7 V to 20 V absolute-max."+      },+      {+        "number": "21",+        "name": "PAD",+        "type": "power_in",+        "description": "Exposed thermal pad on the underside of the RHL package. Internally connected to VSS; must be soldered to a copper pad at the same potential as VSS and stitched to the ground plane with a 2×3 via matrix for thermal performance. Can serve as the star ground between VSS and PGND."+      }+    ],+    "provenance": {+      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"+    },+    "viewers": {+      "symbol": "viewers/symbol.html",+      "footprint": "viewers/footprint.html"+    }   }-}\ No newline at end of file+}