■Overview
In recent years, the market for solar cells that enable electricity to be generated in an environmentally-friendly way has expanded.
At Mitsumi, we have developed a charge control IC <MM3505XR> with low charge current detection for mobile solar cells.
To improve the power generating capabilities of the solar cell, current consumption is reduced to as little as 1/10 of that of previous charge control ICs, and the low-current region where charge control is possible is expanded to just 1/100 of the minimum level for previous models. Hence, charging is possible even when light levels are low.
§ Features
1. |
Due to the low charge current detection configuration, charge control is possible over expanded current range (from 0.2 mA) |
2. |
Configuration keeps current consumption to 30 μA or less. |
3. |
Built-in protection functions such as reverse current prevention, cell voltage detection and temperature monitoring. |
4. |
Small size 3.0 (W) x 3.0 (D) x 0.75 (H) unit:mm |
§ Main specifications
 |
|
 |
Operating voltage range |
+2.3 to 6.8V |
|
Operating temperature range |
-30 to +90ºC |
|
Standby current consumption |
0.7 μA |
|
Charging operation current consumption |
30μA max. |
|
Solar cell voltage range
where charging is allowed |
2.0 ± 0.1V |
|
Full charge detection cell voltage |
4.1 ± 0.02V |
|
Standby charge current control |
80 ± 24mA |
|
Rapid charge current control |
200 ± 20mA |
|
Stop charge current |
0.5 ± 0.1mA |
|
Abnormal cell temperature detection |
to 0ºC, from 60ºC |
|
Rapid charging timer |
4.0h |
|
Package |
SQFN-16A |
|
External dimensions |
3.0 (W) x 3.0 (D) x 0.75 (H) unit:mm |
|
 |
 |
