BQ24081QDRCRQ1

Introduction to BQ24081QDRCRQ1
- What it is: Texas Instruments’ single-cell Li‑ion battery charger with integrated power-path management. It can charge a single-cell Li‑ion cell from a 5 V input (USB or adapter) while simultaneously powering the system.
- Key features: programmable charge current (via ISET), regulated 4.2 V charge voltage, preconditioning for deeply discharged cells, automatic recharge, and battery thermistor temperature monitoring.
- Safety and protection: input short-circuit/overcurrent protection, battery overvoltage/undervoltage protection, thermal shutdown, and reverse-current protection.
- Power-path and system load: provides power to the system load through the input while charging, reducing the need for a separate supply.
- Packaging/grade: suffix QDRCRQ1 indicates an automotive-grade (Q), RoHS-compliant variant in the DRCR package (extended temperature range in automotive applications).
- Applications: portable devices, wearables, and any single-cell Li‑ion applications that charge from USB.
- For exact electrical specs and pinout, refer to the TI datasheet and product page.

Here are the key features of the BQ24081QDRCRQ1 (automotive-grade QFN package):
- Single-cell Li‑ion/Li‑polymer battery charger with integrated power-path management
- 5-V input with system-load power-path so the load can run while the battery is charging
- Constant-current/constant-voltage (CC/CV) charging with programmable charge current (set by external resistor)
- Automatic recharge when the battery voltage falls below a threshold
- Battery temperature monitor input (NTC) for safe charging
- Comprehensive safety protections: overcurrent/short-circuit, overvoltage, overtemperature, reverse-current protection
- Thermal regulation to reduce charging when the device heats up
- Status outputs (CHG/STAT) for charging status and fault indication
- Minimal external component count; suitable for compact portable designs
- Automotive-grade (Q1) qualification for harsh environments
Note: Exact electrical specs (input range, charge-current range, termination details) are defined in the datasheet and should be reviewed for your specific design.

The bq24081QDRCRQ1 is in a 16‑pin QFN package (4×4 mm).

Pin count: 16 pins (QFN/VQFN package).
Function: bq24081QDRCRQ1 is a single‑cell Li‑ion/Li‑polymer battery charger with integrated power‑path (system‑load sharing). It can charge from USB or adapter, regulates to 4.2V, supports programmable charge current (via ISET), includes safety features, and provides status outputs.

Manufacturer: Texas Instruments (TI).
TI is an American multinational technology company that designs and manufactures semiconductors and integrated circuits, with a focus on analog, mixed-signal, and embedded processing products used across many electronics markets.

- Portable consumer electronics (cell phones, PDAs, MP3 players, cameras, wearables)
- USB or adapter-powered single-cell Li‑ion charging with integrated power-path
- Systems needing power-load sharing during charging (always-on devices)
- Automotive-grade applications (Q1): in-vehicle electronics and backup power in 12V/24V environments
- Other small form-factor battery-powered devices requiring compact, safe Li‑ion charging solutions