Datasheet ZXCT1010 (Diodes) - 4
| Manufacturer | Diodes |
| Description | Enhanced High-Side Current Monitor |
| Pages / Page | 8 / 4 — A Product Line of. Diodes Incorporated. ZXCT1010. Power Dissipation. … |
| File Format / Size | PDF / 362 Kb |
| Document Language | English |
A Product Line of. Diodes Incorporated. ZXCT1010. Power Dissipation. Application Information. Typical Application Circuit
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A Product Line of Diodes Incorporated ZXCT1010 Power Dissipation
The maximum allowable power dissipation of the device for normal operation (PMAX), is a function of the package junction temperature (TJ(MAX)), and ambient temperature (TAMB), according to the expression. PMAX = (TJ(MAX) – TAMB)/θJA The device power dissipation, PD is given by the expression: PD = IOUT*(VIN – VOUT) Watts
Application Information
The following lines describes how to scale a load current to an output voltage. V SENSE = VIN – VLOAD VOUT = 0.01 x VSENSE x ROUT E.g. A 1.0A current is to be represented by a 100mV output voltage: 1) Choose the value of RSENSE to give 50mV > VSENSE > 500mV at full load. For example, VSENSE = 100mV at 1.0A. RSENSE = 0.1/1.0 = > 0.1ohms. 2) Choose ROUT to give VOUT = 100mV, when VSENSE = 100mV. Rearranging for Rout gives: ROUT = VOUT/(VSENSE x 0.01) ROUT = 0.1/(0.1 x 0.01) = 100Ω
Typical Application Circuit Typical Circuit Application:
When RLOAD represented any load including DC motors, a charging battery or further circuitry that requires monitoring, RSENSE can be selected on specific requirements of accuracy, size and power rating. ZXCT1010 4 of 8 March 2014 Document number: DS33442 Rev. 11 - 2
www.diodes.com
© Diodes Incorporated
The maximum allowable power dissipation of the device for normal operation (PMAX), is a function of the package junction temperature (TJ(MAX)), and ambient temperature (TAMB), according to the expression. PMAX = (TJ(MAX) – TAMB)/θJA The device power dissipation, PD is given by the expression: PD = IOUT*(VIN – VOUT) Watts
Application Information
The following lines describes how to scale a load current to an output voltage. V SENSE = VIN – VLOAD VOUT = 0.01 x VSENSE x ROUT E.g. A 1.0A current is to be represented by a 100mV output voltage: 1) Choose the value of RSENSE to give 50mV > VSENSE > 500mV at full load. For example, VSENSE = 100mV at 1.0A. RSENSE = 0.1/1.0 = > 0.1ohms. 2) Choose ROUT to give VOUT = 100mV, when VSENSE = 100mV. Rearranging for Rout gives: ROUT = VOUT/(VSENSE x 0.01) ROUT = 0.1/(0.1 x 0.01) = 100Ω
Typical Application Circuit Typical Circuit Application:
When RLOAD represented any load including DC motors, a charging battery or further circuitry that requires monitoring, RSENSE can be selected on specific requirements of accuracy, size and power rating. ZXCT1010 4 of 8 March 2014 Document number: DS33442 Rev. 11 - 2
www.diodes.com
© Diodes Incorporated
