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STCC05-B 数据表(PDF) 2 Page - STMicroelectronics |
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STCC05-B 数据表(HTML) 2 Page - STMicroelectronics |
2 / 13 page STCC05-B 2/13 FUNCTIONAL DESCRIPTION The STCC05 is a control circuit embedding most of the analog & power circuitry of an air conditioner or refrigirator control module. It interfaces the micro-controller MCU with the AC power and cooling process sections. ■ The voltage supply The 5V voltage regulator supplies the micro-controller MCU. Its input voltage ranges from 7V to 18V; and its average DC output current up to 50mA. With an output filtering capacitor of 100µF, its output voltage accuracy is better than +/- 5% in the whole operating range of the ambient temperature TAMB, the load current IDD and the input voltage VPS , contributing directly to the ADC accuracy. The regulator includes also an over current limiter and a thermal shutdown. The over current limiter pro- tects the regulator against output short circuits and inrush currents during the power up. The current limiter is made of a serial shunt resistance as current sensor and a circuit that regulates the input current. More- over, the thermal shutdown protects the whole circuit against overload operations. It is made of a thermal sensing junction and a hysteresis comparator that is able to switch off the passing element. Figure 2. Block diagram Figure 3. Pin-out connections RL4 IN4 IN3 IN2 IN1 RL3 RL2 RL1 BZ2 ENBZ INBZ VDD RST\ ZVS BZ1 VPS COM SYN INS OUTS VPS 20A RELAY DRIVER RELAY DRIVER RELAY DRIVER RELAY DRIVER 5V REGULATOR BUZZER DRIVER VPS VPS VPS VPS VPS 30µs FILTER EMI FILTER ZERO VOLTS SYNC. RESET LEVEL SHIFTER VPS INS RL1 OUTS RL2 RL3 RL4 BZ1 BZ2 ENBZ SYN /RST IN3 IN4 INBZ COM IN1 IN2 ZVS VDD 1 2 3 4 5 6 7 8 9 10 13 12 11 16 15 14 17 18 19 20 1.25 V Reference VPS VDD R 1 R 2 Over current Limiter R SENSE Thermal Shutdown V H = 3.75 V V L = 3.40 V VDD /RST V DD VH VL C UP = 100nF RESET V DD 3k Ω 6k Ω V DD R UP > 100kΩ MCU |
类似零件编号 - STCC05-B |
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类似说明 - STCC05-B |
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