The bq2002E/G is a low-cost CMOS battery charge controller providing reliable charge termination for both NiCd and NiMH battery applications.
The bq2002E/G is a low‑cost CMOS fast‑charge management IC designed for nickel‑cadmium (NiCd) and nickel‑metal‑hydride (NiMH) battery packs. It provides reliable charge termination, optional top‑off, and pulse‑trickle control in a single 8‑pin package (DIP or SOIC).
Key features include fast‑charge initiation on power‑up or battery insertion, multiple termination criteria (PVD, -AV, voltage, temperature, time), low‑power standby mode, and an LED status output. The device is intended for stand‑alone chargers or system‑integrated charging solutions.
| Supply voltage (Vcc) range | 4.0 V – 6.0 V (typical 5.0 V) |
|---|---|
| LED output low voltage (VoL) | 0.8 V |
| Maximum cell voltage (Vacv) | 2 V ±5 % |
| Operating temperature range | 0 °C – +70 °C |
| Storage temperature range | -40 °C – +85 °C |
| Soldering temperature limit | up to 260 °C for 10 s |
Fast charge and top‑off can be inhibited by driving the INH pin high, which suspends the charge timer and LED status until the pin returns low.
The recommended supply voltage is 5.0 V, with a permissible range from 4.0 V to 6.0 V.