# FP8208AXR-G1

**Advanced Analog Technology** · Battery Management · SOP-8-EP

FP8208AXR-G1 from Advanced Analog Technology, in a SOP-8-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC | power_in | Supply voltage input, recommended 4.8V to 5.5V, with the charger held in shutdown until VCC rises above the 4.5V UVLO threshold. |
| 2 | EN | input | Enable control input where a logic level below 0.5V puts the charger into shutdown and a level above 2.5V is required for enable. |
| 3 | CHRGB | output | Charge state indicator 1 output, which is pulled low during charging with VCHRGB at most 0.6V at 5mA sink. |
| 4 | STDBY | output | Charge state indicator 2 output, which is pulled low at charge termination with VSTDBY at most 0.6V at 5mA sink. |
| 5 | TEMP | input | Battery temperature detector input that stops charging when the voltage is above 80% or below 45% of VCC, and must be shorted to GND if battery temperature monitoring is not used. |
| 6 | VBAT | power_out | Battery voltage connection where the charger regulates the float voltage to 4.2V with ±1% accuracy and the battery current is limited to 4.5A absolute maximum. |
| 7 | VS | power_in | Charge current-sense input connected across the sense resistor RS to the BAT pin, which sets charge current against an internal 50mV reference. |
| 8 | LX | input | Switch node and inductor connection pin, with LX voltage rated from -0.3V to 7V and LX to VCC rated at -7V. |
| 9 | EP | power_in | Exposed pad that must be connected to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Advanced Analog Technology |
| Package | SOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | Vcc | -0.3 |  | 6 | V |  | 6 |
| LX to VCC Voltage | VDS | -7 |  |  | V |  | 6 |
| LX Voltage | VLX | -0.3 |  | 7 | V |  | 6 |
| All Other Pins |  | -0.3 |  | 6 | V |  | 6 |
| BAT Current | IBAT |  |  | 4.5 | A |  | 6 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 6 |
| Storage Temperature | TS | -65 |  | 150 | ℃ |  | 6 |
| Operating Temperature |  | -25 |  | 85 | ℃ |  | 6 |
| Lead Temperature |  |  |  | 260 | ℃ | soldering, 10 sec | 6 |
| Supply Voltage | Vcc | 4.8 |  | 5.5 | V |  | 7 |
| Operating Temperature |  | -25 |  | 85 | °C |  | 7 |
| Standby Current | ISB |  | 300 | 500 | µA | Charge Termination | 7 |
| Shutdown Supply Current | IST |  |  | 200 | µA | VCC < VBAT , VEN =0V | 7 |
| CV Output (Float) Voltage | VFLOAT | 4.158 | 4.2 | 4.242 | V | 0℃<TA<85℃ | 7 |
| BAT pin Current (Standby-Mode) | IBAT |  | 5 | 10 | µA | Standby-Mode, VBAT=4.2V | 7 |
| BAT pin Current (Shutdown-Mode) | IBAT |  | 5 | 10 | µA | Shutdown-Mode | 7 |
| BAT pin Current (Sleep-Mode) | IBAT |  | 1 | 10 | µA | Sleep-Mode, VCC=0V | 7 |
| Current Sense Reference Voltage | VSENSE | 46 | 50 | 54 | mV |  | 7 |
| Trickle Charge Threshold Voltage | VTRIKL | 2.8 | 2.9 | 3 | V | RSense =16.66mΩ, VBAT Rising | 7 |
| VCC Under Voltage Lockout Threshold | VUV | 4.32 | 4.5 | 4.68 | V | Vcc Rising | 7 |
| CHRGB pin Output Low Voltage | VCHRGB |  | 0.3 | 0.6 | V | ICHRGB=5mA | 7 |
| STDBYB pin Output Low Voltage | VSTDBY |  | 0.3 | 0.6 | V | ISTDBY=5mA | 7 |
| TEMP pin High Threshold Voltage | VTEMP-H | 76 | 80 | 83 | % |  | 7 |
| TEMP pin Low Threshold Voltage | VTEMP-L | 42 | 45 | 48 | % |  | 7 |
| EN Input High Voltage | VEN-H | 2.5 |  |  | V |  | 7 |
| EN Input Low Voltage | VEN-L |  |  | 0.5 | V |  | 7 |
| Max. Duty | DMAX |  |  | 98 | % |  | 7 |
| Min. Duty | DMIN | 10 |  |  | % |  | 7 |
| Switching Frequency | Fsw | 580 | 720 | 860 | KHz |  | 7 |
| Trickle Charge Current | ITRIKL |  | 300 |  | mA | VBAT< VTRIKL, RSense=16.66mΩ | 7 |
| Trickle Charge Hysteresis Voltage | VTRKHYS |  | 200 |  | mV | RSense =16.66mΩ | 7 |
| VCC Under Voltage Lockout Threshold Hysteresis | VUVHYS |  | 200 |  | mV |  | 7 |
| VCC-VBAT Lockout Threshold | VASD |  | 100 |  | mV | Vcc Rising | 7 |
| VCC-VBAT Lockout Threshold | VASD |  | 10 |  | mV | Vcc Falling | 7 |
| PMOSFET On Resistance | RON(PMOS) |  | 50 |  | mΩ |  | 7 |
| NMOSFET On Resistance | RON(NMOS) |  | 50 |  | mΩ |  | 7 |
| C/10 Termination Current Threshold | ITERM |  | 300 |  | mA | RSense =16.66mΩ | 7 |
| C/10 Termination Current Threshold | ITERM |  | 100 |  | mA | RSense=50mΩ | 7 |
| Battery Recharge Threshold Voltage | VRECHRG |  | 200 |  | mV | VFLOAT-VRECHRG | 7 |
| Thermal Shutdown | TLIM |  | 150 |  | °C |  | 7 |
| Thermal Resistance (Junction to Ambient) | θJA |  | 60 |  | ℃ / W | SOP-8L | 6 |
| Thermal Resistance (Junction to Case) | θJC |  | 10 |  | ℃ / W | SOP-8L | 6 |

## CAD (KiCad official)

- Symbol: `FP8208AXR-G1`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`
- 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files: `fp8208axr-g1-etched.step` / `fp8208axr-g1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fp8208axr-g1.step` / `fp8208axr-g1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Advanced Analog Technology datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588945375189614592) (16 pp, sha256 `a1938107e669b39b`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/fp8208axr-g1-datasheet.pdf)