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TSC888AILT Datasheet(PDF) 2 Page - STMicroelectronics |
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TSC888AILT Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 7 page Application schematics and pin description TSC888 2/7 1 Application schematics and pin description The TSC888 high-side current-sense amplifier features a 2.8 V to 24 V input common-mode range that is independent of supply voltage. The main advantage of this feature is to allow high-side current sensing at voltages much greater than the supply voltage (VCC). The TSC888 can therefore be supplied by a 5 Vsb line and monitor a 3.3 V, 5 V or 12 V power line. Considering the wide supply voltage operating range (4 V to 24 V) another option available in most cases is to connect the VCC pin to the Vp pin. Figure 1. Application schematics Table 1 describes the function of each pin. Their position is shown in the illustration on the cover page and in Figure 1 above. Table 1. Pin description Symbol Type Function Out Analog output The out voltage is proportional to the magnitude of the sense voltage Vp-Vm. Gnd Power supply Ground line. Vcc Power supply Positive power supply line. Vp Analog input Connection for the external sense resistor. The measured current enters the shunt on the Vp side. Vm Analog input Connection for the external sense resistor. The measured current exits the shunt on the Vm side. Monitoring device Gnd Main PWM controller Stand-by PWM controller 5Vsb 12V, 5V or 3.3V line Vcc Vp Vsense Vm Out TSC888 Iload Vout=Vsense.Av |
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