CIRCUIT060047
High-side V-I with darlington pair circuit
CIRCUIT060047
Overview
This high-side voltage-to-current (V-I) converter delivers a well-regulated current to a load, R4. The circuit accepts an input voltage from 0 V to 10 V and converts it to an output current from 0 A to 5 A. The current is regulated by feeding the voltage across a low-side, current-sense resistor back to the op amp. The output Darlington pair allows for higher current gain than when using a single, discrete transistor.
Features
- Input:
- Vi = 0 V to 10 V
Iimax = 200 µA
- Io = 0 A to 5 A
- Pr5max = 0.25 W
- Vcc = 36
- Vee = 0 V
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Circuit design | Voltage-to-current (V-I) converter circuit with a Darlington transistor | PDF | HTML | May 14, 2021 |
| Application note | AN-31 Amplifier Circuit Collection (Rev. D) | PDF | HTML | Oct 21, 2020 |