TPS5904A
光学绝缘反馈放大器(Ctr = 100% 到 400%)
The TPS5904 and optoisolated feedback amplifiers consist of the industry standard TL1431 precision programmable reference and an optocoupler. Reference-voltage tolerance for the TPS5904 is 0.8%, and for the TPS5904A, 0.4%. The devices are primarily intended for use as the error amplifier/reference/isolation-amplifier element in isolated ac-to-dc power supplies and dc/dc converters. The optocoupler is a gallium-arsenide GaAs light-emitting diode that emits at a wavelength of 940 nm, combined with a silicon phototransistor. The current transfer ratio CTR ranges from 100% to 400% in the standard version. The TPS5904A version with a 150%-to-300% CTR is available for higher-performance applications. When using the TPS5904 or TPS5904A, power-supply designers can reduce component count and save space in tightly packaged designs. The tight-tolerance reference eliminates the need for adjustments in many applications.
The TPS5904 and TPS5904A are characterized for operation from -40°C to 100°C. Each device is supplied in an 8-pin DIP or in an 8-pin gull-wing surface-mount package DCS.
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- TL1431 Precision Programmable Reference 2.5 V and an Optocoupler in a Single Package
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- Reference Voltage Tolerance
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- TPS5904 0.8%
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- TPS5904A 0.4%
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- Controlled Optocoupler CTRs:
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- TPS5904 100% to 400%
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- TPS5904A 150% to 300%
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- High Withstand Voltage WTV, 7500 V Peak for 1 Minute
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- Safety Regulatory Approvals
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- UL...File Number E65085
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- FIMKO, SEMKO, NEMKO, DEMKO
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- \- EN60065/IEC 65
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- \- EN60950/IEC 950
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- VDE 0884, Level 4 6000-V Insulation