Rainbow Electronics MG260 - Manual (Page 45)

MG260 Product Specification
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2.6.7 Buzzer interface
The buzzer output (BUZ) is an open collector output driven by a PWM which
allows a direct connection to a buzzer supplied with VBATT.
VBATT
BUZ
Buzzer
PWM
Figure 17: Buzzer output
Pin description
Signal Pin # I/O I/O type Description
BUZ 69 O Open
collector
Buzzer output