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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK SOT26
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT),Cut Tape (CT)
- Output Isolation：Isolated
- Internal Switch(s)：No
- Voltage - Breakdown：-
- Topology：Flyback
- Voltage - Start Up：15.8 V
- Voltage - Supply (Vcc/Vdd)：10V ~ 25V
- Duty Cycle：75%
- Frequency - Switching：65kHz
- Fault Protection：Current Limiting, Over Load, Over Temperature, Over Voltage
- Control Features：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-26
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：-
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Overview
The AP3125B1KTR-G1 is an offline PWM controller designed for flyback AC/DC converter topologies. It operates with a fixed switching frequency of 65kHz and supports a maximum duty cycle of 75%. The device requires a supply voltage between 10V and 25V, with a startup threshold of 15.8V. It integrates comprehensive protection mechanisms including current limiting, overload protection, over-temperature shutdown, and over-voltage protection. The component is housed in a surface-mount SOT-26 package and is rated for junction temperatures ranging from -40°C to 150°C.
Feature Summary
- Implements Green Mode PWM technology to enhance efficiency across varying load conditions.
- Integrates multiple hardware protection features for robust system reliability.
- Designed specifically for isolated flyback power supply applications.
Applications
- Offline AC/DC power adapters
- Flyback converter designs
- General purpose power supplies
Procurement Notes
Verify the specific suffix against official Diodes Incorporated documentation to confirm pinout and electrical characteristics. Confirm RoHS3 compliance status via the latest datasheet or environmental declaration. Ensure the ordering quantity aligns with manufacturer packaging standards. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement.
Selection Notes
Select this component for applications requiring a fixed 65kHz switching frequency and integrated protection in a compact SOT-26 package. Evaluate thermal management requirements given the 150°C junction temperature rating. Compare performance metrics such as startup voltage and operating supply range against alternative controllers in the AP3125 family to ensure compatibility with the target transformer design and input voltage specifications.
Part Context
This part belongs to the AP3125 series of AC/DC converters manufactured by Diodes Incorporated. The series includes variants with different switching frequencies and feature sets, such as the AP3125LKTR-G1 (20kHz-100kHz) and AP3125HBKTR-G1 (100kHz). The AP3125B1KTR-G1 specifically targets cost-sensitive applications utilizing a fixed 65kHz operation mode.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official replacement guide or contact technical support for verified cross-references.
