AK7846 Datasheet, PDF (10/16 Pages) Asahi Kasei Microsystems – Stereo Audio Class-D Amp with Power Booster for Piezo Speakers

AKEMDAKEMD CONFIDENTIAL
[AK7846]
„ Protection
The AK7846 supports following protection circuits for protecting against any damages.
Output Short-Circuit Protection
In case of detecting VCL(R)P and VCL(R)N short, the AK7846 clamps peak current of Class-D output circuit
without shutting down the outputs.
Over-Temperature Protection
The AK7846 is designed to shutdown at +150°C of inside temperature so that it can be protected from heat
damage. Note that the AK7846 DOES NOT support resume function from Over-Temperature Protection. Once it is
activated, the AK7846 does not back in normal operation unless “PDN” is toggled (“L” Æ “H”).
Over-Current Protection
Class-D amplifiers’ current-limiting protection clamps the output current without shutting down the outputs.
Over-Voltage Protection
Boost DCDC Converter has the voltage-limiting function to avoid destrying itself.
Rev.04.9
– 10 –
2008/03