TPS5430DDAR 3A 5.5-36V Wide Input Step-Down Converter 500kHz Switching High Efficiency (Up to 95%) Internal Compensation Power Good Signal Thermal/UVLO Protection SOIC-8 Package
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Features
andbull; Wide input voltage range:andndash;TPS5430: 5.5V to 36Vandndash;TPS5431: 5.5V to 23V
andbull; Up to 3A continuous (4A peak) output current
andbull; High efficiency up to 95% enabled by 100mΩ integrated MOSFET switch
andbull; Wide output voltage range: adjustable down to 1.22V with 1.5% initial accuracy
andbull; Internal compensation minimizes external parts count
andbull; Fixed 500kHz switching frequency for small filter size
andbull; Improved line regulation and transient response by input voltage feedforward
andbull; System protected by overcurrent limiting, overvoltage protection, and thermal shutdown
andbull;andndash;40anddeg;C to 125anddeg;C operating junction temperature range
andbull; Available in small thermally enhanced 8-pin SO PowerPADandtrade; integrated circuit package
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Applications
andbull; Consumer: set-top box, DVD, LCD displays
andbull; Industrial and car audio power supplies
andbull; Battery chargers, high-power LED supply
andbull; 12V and 24V distributed power systems
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Description
The TPS543x is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage lockout circuit to prevent start-up until the input voltage reaches 5.5V; an internally set slow-start circuit to limit inrush currents; and a voltage feed forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 15andmu;A typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS543x feedback loop is internally compensated. The TPS5431 is intended to operate from power rails up to 23V. The TPS5430 regulates a wide variety of power sources including 24V bus.
The TPS543x device is available in a thermally enhanced, easy to use 8-pin SOIC PowerPAD integrated circuit package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
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INFORMATION
| Category | | andnbsp; |
| Mfr | | |
| Series | | |
| Packaging | Tape andamp; Reel (TR) Cut Tape (CT) Digi-Reelandreg; | andnbsp; andnbsp; andnbsp; |
| Part Status | | |
| Function | | |
| Output Configuration | | |
| Topology | | |
| Output Type | | |
| Number of Outputs | | |
| Voltage - Input (Min) | | |
| Voltage - Input (Max) | | |
| Voltage - Output (Min/Fixed) | | |
| Voltage - Output (Max) | | |
| Current - Output | | |
| Frequency - Switching | | |
| Synchronous Rectifier | | |
| Operating Temperature | -40anddeg;C ~ 125anddeg;C (TJ) | |
| Mounting Type | | |
| Package / Case | | |
| Supplier Device Package | | |
| Base Product Number | |
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Drawing
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TPS5430DDAR 3A 5.5-36V Wide Input Step-Down Converter 500kHz Switching High Efficiency (Up to 95%) Internal Compensation Power Good Signal Thermal Images
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