BQ24400DR

BQ24400DR is a Texas Instruments battery charging IC (charge-management device) for single‑cell Li‑ion/Li‑polymer packs. It handles charging from USB or an adapter and provides power-path management so the system can run while charging. The DR suffix denotes a specific package/variant from TI.
Key features (typical):
- CC/CV charging with supporting pre-conditioning for deeply discharged cells
- Battery-temperature monitoring via thermistor input
- Safety protections: overcurrent/short-circuit, overvoltage, and thermal
- System-power path to power the device during charging
- Charge status and fault indication outputs
- External-resistor-programmable charge current
Typical usage:
- Compact portable devices (phones, handhelds, wearables) that require a simple, protected Li‑ion charger with a small footprint.
Note:
- For exact electrical specs, pinout, and programming details, consult the BQ24400 family datasheet and packaging documentation for the DR variant.

Here are the main features of the bq24400DR:
- 1-cell Li-Ion/Li-Polymer battery charger with integrated MOSFET
- Fixed/regulated charge voltage (CV) for 4.2 V cell
- Programmable charge current up to about 1 A (via external resistor)
- Power-path operation: powers system load while charging battery
- Preconditioning for deeply discharged cells
- Automatic recharge when battery falls below a threshold
- Thermal regulation with protection (thermal shutdown/foldback)
- Battery temperature monitoring (NTC input)
- Safety protections: overcurrent/short-circuit, overvoltage, reverse polarity protection
- Status outputs/flags (charging status, fault indication)
- Compact 8-pin package (DR suffix) suitable for small devices
Note: Exact electricals (current, input range) are voltage/plate specifics from the datasheet; confirm for your revision.

- Pin count: 8 pins (8‑pin package, DR suffix indicates RoHS/Tape-Ready package).
- Function: Stand-alone Li‑ion battery charger IC for a single-cell battery. Provides CC/CV charging from a 5V input, with ISET pin to program charge current, status outputs (charge/standby), and basic protections (UVLO/thermal). Suitable for USB or DC supply applications.

- Manufacturer: Texas Instruments Incorporated (TI).
- What kind of company: TI is a global American semiconductor company that designs and manufactures analog and embedded processing integrated circuits and related products for a wide range of electronics applications.

BQ24400DR is a stand-alone charger for single-cell Li‑ion/Li‑polymer packs. Typical application areas include:
- Consumer portable electronics (mobile phones, cameras, MP3 players, handheld gamers)
- Cordless phones and PDAs
- Portable medical devices and instrumentation
- Battery-powered tools, toys, and accessories
- Embedded charger modules in docking/cradle systems and other compact power-management solutions
Note: Designed for 3.0–4.2 V single-cell packs with simple, cost-effective charging.

BQ24400DR comes in an 8-pin WSON package (3×3 mm) with an exposed pad.