STCC02-ED5 Datasheet, PDF (6/13 Pages) STMicroelectronics – CONTROL CIRCUIT FOR HOME APPLIANCE MCU BASED APPLICATION

STCC02-ED5
■ Buzzer driver
The MCU can drive a warning buzzer with a 50% PWM signal. The buzzer driver amplifies this signal in
current and translates it from the 5V MCU output to the V_CC supply to produce the right sound level from
the buzzer.
The output stage is made of a transistor and a 1.5 kΩ resistor. The transistor is referred to the power
ground COM and is connected by its collector to the output BUZ₃. It has a DC current rating of 17 mA and
runs up to 5 kHz. Finally, the resistor is connected between the BUZ₃ and V_CC pins to discharge the
capacitance of the buzzer at turn off and in off state.
Table 2: Absolute Ratings (limiting values)
Symbol
V_DD
V_IN
V_DS, V_CC
V_SYN
V_MO
Pin
V_DD
V_IN
DS, V_CC
SYN
BUZ₁, MAG₂, FAN₁
Parameter name & conditions
Output supply voltage
Input supply voltage
Door switch and power supply voltage
AC input voltage, R_ZV = 10kΩ
Output voltage
V_I
IN₁, IN₂, IN₃
Input logic voltage
V_O ZVS, CDD, /RST Output logic voltage
DS, V_CC
MAG₂, FAN₁
I_M
BUZ₃
F_MAX
P_DIS
T_AMB
T^J
MAG₂, FAN₁
IN₃, BUZ₃
All
AII
All
Maximum sourced current pulse, tp = 10ms
Maximum sunk driver current pulse, tp = 1ms
Maximum DC sourced current
Maximum driver diode reverse current
Maximum DC sourced current
Maximum demagnetization diode reverse
current
Maximum buzzer frequency
Operating dissipation, DIL-16 package ⁽¹⁾
Operating ambient temperature, DIL-16
Operating junction temperature
Storage junction temperature
Note 1: Refer to the Application Recommendations for the calcultation of the functional dissipation.
Value
- 0.3 to 6
- 0.3 to 30
- 0.3 to 30
- 1 to 30
- 0.3 to 30
- 0.3 to V_DD
+ 0.3V
- 0.3 to V_DD
+ 0.3V
120
120
100
15
10
Unit
V
V
V
V
V
V
V
mA
mA
mA
mA
mA
1
mA
5
kHz
0.65
W
- 10 to 85 °C
- 10 to 150 °C
- 25 to 150 °C
Table 3: Electromagnetic Compatibility Ratings
(T_J = 25°C, according to typical application diagram of page 1, unless otherwise specified)
Symbol Node
Parameter name & conditions
Value Unit
V_ESD
All pins ESD protection, MIL-STD 883 method 3015, HBM model
±2
kV
Table 4: Thermal Resistance
Symbol
Parameter
R_th(j-a)
DIL-16 thermal resistance junction to ambient
Copper thickness = 35µm
Value
100
Unit
°C/W
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