The MC33347A is a monolithic lithium battery protection circuit that is designed to enhance the useful operating life of one or two cell rechargeable battery packs. Cell protection features consist of independently programmable charge and discharge limits for both voltage and current, a delayed current shutdown, continuous cell voltage balancing with the choice of on–chip or external balancing resistors, and a virtually zero current sleepmode state when the cells are discharged.
The MC33347A is a monolithic lithium‑battery protection IC designed for one‑ or two‑cell rechargeable packs. It offers programmable charge and discharge limits, cell‑voltage balancing, a charge pump for low‑voltage operation and a virtually zero‑current sleep mode.
The document lists maximum ratings, electrical characteristics, pin descriptions, operating mode tables and mechanical dimensions for the SO‑16 (case 751B) and TSSOP‑16 (case 948F) packages, along with recommended external components for proper operation.
| Operating Junction Temperature Range | -40 °C to +150 °C |
|---|---|
| Storage Temperature Range | -55 °C to +150 °C |
| External Cell Balancing Current | 1.0 A |
| Charge Pump Output Voltage (RL > 10 kΩ) | 9.2 V |
The device can operate from –40 °C up to +150 °C.
Only a minimum number of external components are needed, typically a resistor and capacitor for the charge pump and optional balancing resistors.