IXCP10M90S Current Regulator 100mA TO-220-3
The IXCP10M90S is a high-voltage, switchable current-regulator packaged in a TO-220-3 (TO-220AB) case. It is designed to act as an on/off current source rather than a simple resistor, providing a controlled plateau current over a wide VAK range. The device is tailored for low-current, high-voltage roles where a steady current is required while the voltage across the device can swing to hundreds of volts.
Internally the device exhibits a characteristic internal resistance that sets its bias behavior and a plateau current that can be shaped by an external series resistor. Thermal design is important: the TO-220 package allows mounting to a heatsink and the device supports significant case dissipation when properly cooled, enabling continuous operation in demanding high-voltage circuits.
Control of the regulator is achieved through the gate terminal (G), which enables on/off behavior and modulation of the plateau current. The IXCP10M90S is therefore useful wherever a reliable, limited current is needed across large voltage swings provided designers follow the datasheet’s mechanical, thermal and safe-operating-area guidelines.
Features:
- 40 W continuous dissipation at specified case temperature.
- JEDEC standard packages (TO-220 and TO-252) for easy mounting and cooling.
- On/Off switchable current-source operation via gate terminal.
- High blocking voltage capability (900 V VAK rating).
- Typical internal RAK ~58 kΩ for predictable biasing behavior.
Specifications:
| Parameter | Value (from datasheet) |
|---|---|
| Part: | IXCP10M90S (TO-220-3) |
| Nominal plateau output current (IA(p)): | 1 — 100 mA (device family range) |
| V_AK (blocking voltage): | 900 V |
| Typical R_AK (internal resistance): | 58 kΩ |
| Maximum continuous current (IA, T_C = 25°C): | 0.3 A (absolute rating) |
| Continuous power dissipation (P_D, T_C = 25°C): | 40 W |
| Gate/control voltage (V_GK): | ±20 V (absolute rating) |
| Operating / storage temperature (T_J / T_stg): | -55 °C to +150 °C |
| Thermal resistance RthJC (junction-to-case): | 3.1 K/W |
| Thermal resistance RthJA (TO-220): | 80 K/W |
| Package: | TO-220AB (IXCP), also available as TO-252 (IXCY) |
Pinout Diagram:
Footprint Diagram:
Applications:
- Start-Up Circuits for SMPS.
- Highly Stable Voltage Sources.
- Surge Limiters and Voltage Protection.
- Fast Reacting Resettable Fuses.
- Soft Start-Up Circuits.
Package Contents:
- 1x IXCP10M90S Current Regulator 100mA TO-220-3
