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| Numéro de série | AAT2805 |
| Categorie | Power Management => Regulators |
| Description | Charge Pumps (Switched Capacitor Regulators)
The AAT2805 is a dual charge pump designed to
support both the white LED backlight and flash applications
for systems operating with lithium-ion/polymer
batteries. The backlight charge pump is capable
of driving up to four LEDs at a total of 120mA. The
current sinks may be operated individually or in parallel
for driving higher current LEDs. To maximize
power efficiency, the charge pump operates in 1X,
1.5X, or 2X mode, where the mode of operation is
automatically selected by comparing the forward
voltage of each LED with the input voltage.
AnalogicTech's AS2Cwire™ (Advanced Simple Serial
Control™) serial digital input is used to enable, disable,
and set current for each LED with a 16-level
logarithmic scale plus four low-current settings down
to 50μA for optimized efficiency, with a typical operating
quiescent current of less than 50μA. |
| Société | Analogic Corporation
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| Datasheet | Télécharger AAT2805 datasheet |
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