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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK 8SO
- Series：GreenChip™
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Output Isolation：Isolated
- Internal Switch(s)：No
- Voltage - Breakdown：-
- Topology：Flyback
- Voltage - Start Up：17 V
- Voltage - Supply (Vcc/Vdd)：8.5V ~ 40V
- Duty Cycle：75%
- Frequency - Switching：23kHz ~ 52kHz
- Fault Protection：Open Circuit, Over Temperature, Over Voltage, Short Circuit
- Control Features：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：12.5 W
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Overview
The TEA1720BT/1J is an AC-DC switch-mode power supply controller from NXP Semiconductors, designed for flyback topologies. It operates within a switching frequency range of 23 kHz to 52 kHz and supports a maximum duty cycle of 75%. The device functions with a supply voltage (VCC/VDD) between 8.5 V and 40 V and features a startup voltage of 17 V. It is rated for operation in temperatures ranging from -40°C to +85°C and is housed in an 8-SOIC package.
Feature Summary
- Integrates high-voltage startup circuitry to eliminate external start-up components
- Provides primary-side regulation without requiring optocouplers or secondary controllers
- Includes comprehensive protection mechanisms such as overvoltage, overtemperature, and short-circuit safeguards
Applications
- Mobile device chargers up to 10 W
- Compact AC-DC adapters
- Low-power consumer electronics power supplies
Procurement Notes
Verify the specific suffix '1J' against official NXP documentation to confirm tape-and-reel packaging and lead-free status. Confirm RoHS compliance details directly from the datasheet. Ensure the component matches the obsolete status indicated in distributor records before finalizing procurement plans.
Selection Notes
Select this controller for designs prioritizing minimal component count and cost efficiency in low-power applications. It is suitable for isolated flyback converters where primary-side regulation is acceptable. Consider its operating temperature range and SOIC package constraints during thermal and layout planning.
Part Context
This component belongs to the GreenChip™ series, which focuses on energy-efficient power management solutions. The TEA1720BT variant specifically targets mobile charging applications, offering a balance of performance and simplicity by integrating essential control functions into a single IC.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult NXP technical support for current alternatives if this obsolete part is required.
