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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK SC74
- Series：GreenChip™
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Output Isolation：Isolated
- Internal Switch(s)：No
- Voltage - Breakdown：-
- Topology：Flyback
- Voltage - Start Up：21.5 V
- Voltage - Supply (Vcc/Vdd)：12V ~ 30V
- Duty Cycle：80%
- Frequency - Switching：65kHz
- Fault Protection：Current Limiting, Over Power, Over Temperature, Over Voltage
- Control Features：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Package / Case：SC-74, SOT-457
- Supplier Device Package：SC-74
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：75 W
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Overview
The TEA1731TS/1H is a switched-mode power supply controller IC from the TEA173X series, manufactured by NXP Semiconductors. Designed for flyback topologies, it operates in peak current and frequency control mode with integrated slope compensation for continuous conduction mode. The device supports an input voltage range of 12 V to 30 V and features a switching frequency between 27.5 kHz and 82 kHz. It includes overpower protection (OPP) and overvoltage protection (OVP) on VCC. The IC offers low supply current, reaching 620 uA during operation, and functions within a temperature range of -40 C to +150 C. It is housed in a TSOP-6 package.
Feature Summary
- Integrates overpower protection (OPP) and overvoltage protection (OVP) on VCC
- Supports flyback topologies with peak current and frequency control
- Features frequency jitter implementation to reduce electromagnetic interference
- Provides high efficiency through frequency reduction at low output power levels
Applications
- Low-cost switched-mode power supply designs
- Flyback converter applications up to 75 W
- AC-DC adapters requiring high efficiency across load ranges
Procurement Notes
Verify the specific suffix 'H' against official NXP documentation to confirm pinout compatibility and electrical characteristics relative to standard variants like TEA1731TS/1Z. Ensure the component meets RoHS requirements and check for any obsolescence notices or lifecycle status updates directly from the manufacturer before finalizing procurement plans.
Selection Notes
Select this controller for applications requiring a cost-effective solution for flyback converters with minimal external components. Consider its wide operating temperature range and integrated protections when designing for reliability. Evaluate the fixed frequency operation with jitter against EMI constraints and ensure the 12 V to 30 V input range matches the system's power source specifications.
Part Context
The TEA1731 belongs to the GreenChip SMPS Control IC family, designed to simplify the design of efficient power supplies. This series emphasizes low component count and high performance. The TSOP-6 package allows for compact surface-mount installations, suitable for space-constrained consumer electronics and industrial power adapter designs requiring robust protection features.
Replacement Considerations
Check for direct substitutes within the TEA173X series. Verify if TEA1731TS/1Z serves as a compatible alternative based on identical pinouts and specifications.
