The SAA1501T is a battery monitor and charge current control circuit for rechargeable battery systems. It features high integration, accurate charge and discharge measurements, large dynamic range of charge and discharge currents, and independent settings of charge and discharge efficiency.
The SAA1501T is an integrated circuit designed to function as a battery monitor and charge current control circuit in rechargeable battery systems, specifically supporting NiCd and NiMH batteries. It operates as a Coulomb counter to register charge and discharge currents and time, allowing for accurate charge amount display via LCD or LED bargraphs.
The device utilizes BiCMOS technology to achieve high accuracy measurements and digital signal processing. It is intended for use in intelligent battery systems, capable of operating alone as a charge monitor or in conjunction with a charger to regulate charge current. The circuit includes features for temperature protection and dynamic charge accounting.
| Supply voltage | 2.0 to 4.3 V |
|---|---|
| Standby current | 100 nA |
| Operating ambient temperature | 0 to +70 °C |
| Package type | plastic small outline package; 24 leads |
The device is designed to work with both NiCd and NiMH batteries in all sizes.
The circuit requires a minimum of 2 V to operate, which supports two-cell battery configurations.