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Product Detailed Parameters
- Description：IC OFFLINE SW STEP-DOWN SOT25
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Isolation：Non-Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：500V
- Topology：Step-Down (Buck)
- Voltage - Start Up：2.4 V
- Voltage - Supply (Vcc/Vdd)：5.3V ~ 5.6V
- Duty Cycle：-
- Frequency - Switching：-
- Fault Protection：Over Load, Open Loop, Short Circuit, Thermal Shutdown
- Control Features：-
- Operating Temperature：-40°C ~ 105°C (TA)
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-25
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：-
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Overview
The AL17050WT-7 is a universal high voltage step-down converter manufactured by Diodes Incorporated. It operates as a buck topology switching regulator designed for AC/DC power supply applications using primary side regulation. The device is housed in a SOT-25-5 surface-mount package and supports an input voltage range of 4.5 V to 40 V. It provides a fixed output voltage of 3.3 V with a maximum output current capability of 50 mA. Key electrical parameters include a typical quiescent current of 88 µA and a switching frequency of 33 kHz. The component functions reliably within an operating temperature range from -40 °C to +105 °C.
Feature Summary
- Integrates primary side regulation for simplified circuit design without optocouplers
- Supports wide input voltage ranges suitable for universal AC/DC conversion
- Features low standby power consumption for energy-efficient operation
Applications
- Universal AC/DC power supplies
- Primary side regulated flyback converters
- Adapter and charger circuits
Procurement Notes
Verify the specific suffix W5 against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the ordering code matches the required tape and reel quantity specifications. Cross-reference the RoHS compliance status with the latest product change notifications provided by Diodes Incorporated prior to final procurement.
Selection Notes
Select this component when designing cost-effective, isolated power supplies requiring primary side regulation. It is suitable for applications where minimizing external component count and reducing standby power are critical priorities. Consider the fixed 3.3 V output constraint and the 50 mA load capability during system architecture planning.
Part Context
This part belongs to the AL1705x series of high-voltage buck converters from Diodes Incorporated. The series is engineered for universal input applications, offering a compact solution for offline power conversion. The AL17050 variant specifically targets fixed voltage outputs, distinguishing it from adjustable counterparts within the same family.
Replacement Considerations
AL17051V33W5-7
FAQ
What is the switching frequency of the AL17050WT-7?
The device operates at a fixed switching frequency of 33 kHz.
Does the AL17050WT-7 support primary side regulation?
Yes, the AL17050WT-7 is designed with integrated primary side regulation capabilities.
