Beta
Union Semiconductor is a fabless IC design company specializing in high-quality analog and mixed-signal integrated circuits for power supply, power management, and system interface applications.
Parts that are not part of a series
Company background and product focus
Union Semiconductor International Limited, founded in 2001 and headquartered in Shanghai, China, is a fabless integrated circuit design company dedicated to developing innovative analog and mixed-signal IC solutions. The company bridges the analog and digital worlds through products that detect, measure, amplify, and convert power while providing essential circuit protection.
Union Semiconductor's portfolio encompasses four core product lines: power supply ICs, power management devices, analog switches and multiplexers, and system interface and protection components. With over 300 analog IC products, the company serves diverse markets including automotive, communications, computing, consumer electronics, green energy, and industrial applications.
© 2026 Zenode. All rights reserved.
Product families from Union Semiconductor International Limited
| Series | Category | Parts | Status | Description |
|---|---|---|---|---|
| Series | Category | Parts | Status | Description |
|---|---|---|---|---|
| Power Management (PMIC) | 1 | Active | ||
| Power Management (PMIC) | 1 | Active | ||
| Translators, Level Shifters | 1 | Active | ||
| Logic | 1 | Active | ||
| Integrated Circuits (ICs) | 1 | Active | ||
| Integrated Circuits (ICs) | 2 | Active | ||
| Voltage Regulators - DC DC Switching Regulators | 2 | Active | ||
| Integrated Circuits (ICs) | 1 | Active | ||
| Integrated Circuits (ICs) | 1 | Active | ||
| Power Management (PMIC) | 2 | Active |
Parts from Union Semiconductor International Limited that are not part of a series
| Part Information | Pricing (lowest) | Receiver Hysteresis | Mounting Type | Voltage - Supply (Maximum) | Voltage - Supply (Minimum) | Package Name | Number of Drivers | Number of Receivers | Data Rate | Duplex | Type | Protocol | Operating Temperature (Max) | Operating Temperature (Min) | Package Length | Package Width | Package / Case | Number of Regulators | Current - Quiescent (Iq) | Voltage - Output (Min/Fixed) | Voltage - Input (Max) | Output Type | Output Configuration | Current - Output | Control Features | PSRR | Voltage Dropout (Max) | Voltage - Output (Max) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Union Semiconductor International Limited IC TRANSCEIVER HALF 1/1 8SOP | Sign in to see pricing | 25 mV | Surface Mount | 5.5 V | 3 V | 8-SOIC, 8-SOP | 1 | 1 | 10 Mbps | Half | Transceiver | RS485 | 85 °C | -40 °C | 0.154 in | 3.9 mm | — | — | — | — | — | — | — | — | — | — | — | — |
 Union Semiconductor International Limited IC TRANSCEIVER HALF 1/1 10DFN | Sign in to see pricing | 25 mV | Surface Mount | 5.5 V | 3 V | 10-DFN | 1 | 1 | 10 Mbps | Half | Transceiver | RS485 | 85 °C | -40 °C | 3 mm | 3 mm | 10-WFDFN Exposed Pad | — | — | — | — | — | — | — | — | — | — | — |
 Union Semiconductor International Limited IC REG LINEAR 2.8V 250MA SOT23-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-23-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | SC-59, SOT-23-3, TO-236-3 | 1 | 5 µA | 2.8 V | 16 V | Fixed | Positive | 250 mA | Enable | 40 dB | 0.3 V | — |
Union Semiconductor International Limited IC REG LINEAR 3V 250MA SOT23-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-23-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | SC-59, SOT-23-3, TO-236-3 | 1 | 5 µA | 3 V | 16 V | Fixed | Positive | 250 mA | Enable | 40 dB | 0.3 V | — |
Union Semiconductor International Limited IC REG LINEAR 3.3V 250MA SOT23-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-23-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | SC-59, SOT-23-3, TO-236-3 | 1 | 5 µA | 3.3 V | 16 V | Fixed | Positive | 250 mA | Enable | 40 dB | 0.3 V | — |
Union Semiconductor International Limited IC REG LINEAR 5V 250MA SOT23-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-23-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | SC-59, SOT-23-3, TO-236-3 | 1 | 5 µA | 5 V | 16 V | Fixed | Positive | 250 mA | Enable | 40 dB | 0.3 V | — |
 Union Semiconductor International Limited IC REG LINEAR 2.8V 250MA SOT89-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-89-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | TO-243AA | 1 | 5 µA | 2.8 V | 16 V | Fixed | Positive | 250 mA | — | 40 dB | 0.3 V | — |
Union Semiconductor International Limited IC REG LINEAR 3V 250MA SOT89-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-89-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | TO-243AA | 1 | 5 µA | 3 V | 16 V | Fixed | Positive | 250 mA | — | 40 dB | 0.3 V | — |
Union Semiconductor International Limited IC REG LINEAR 3.3V 250MA SOT89-3 | Sign in to see pricing | — | Surface Mount | — | — | SOT-89-3 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | TO-243AA | 1 | 5 µA | 3.3 V | 16 V | Fixed | Positive | 250 mA | — | 40 dB | 0.3 V | — |
 Union Semiconductor International Limited IC REG LIN POS ADJ 250MA SOT23-5 | Sign in to see pricing | — | Surface Mount | — | — | SOT-23-5 | — | — | — | — | — | — | 85 °C | -40 °C | — | — | — | 1 | 5 µA | 2.5 V | 16 V | Adjustable | Positive | 250 mA | Enable | 40 dB | 0.3 V | 5 V |