There are four methods of switching the ECO Function, and Ricoh offers four types of products utilizing each method.
| Manual Mode Shift Type||The mode is switched by H/L input to an ECO pin.|
| Automatic Mode Shift Type||The voltage regulator automatically switches between modes depending on system load.
The switching point is fixed in the IC.
| Seamless Type||Instead of switching between two modes, a transition is made between modes depending on the output current.|
| Manual/Automatic Mode Shift Type||The mode is switched by H/L input to an AE pin.
When AE="H", the mode is set to the fast response mode, and when AE="L", the voltage regulator operates like the Automatic Mode Shift Type.
This type has both advantage of the Manual Mode Shift Type and the Automatic Mode Shift Type.
|Manual Mode Shift Type (with ECO pin)||Automatic Mode Shift Type||Seamless Type|
|The mode is switched by controlling H/L to the ECO pin.||Switching occurs between low power mode and fast response mode depending on system load (output current).||The supply current smoothly decreases as the system load (output current) decreases.|
|Manual/Automatic Mode Shift Type|
|Fast response mode and Automatic mode shift can be switched by controlling H/L to the AE pin.|