TPS65130

具有正负（双路）输出的 800mA 升压电流，用于 OLED 和 CCD 传感器，24 QFN

The TPS6513x is dual-output DC-DC converter generating a positive output voltage up to 15 V and a negative output voltage down to –15 V with output currents in a 200-mA range in typical applications, depending on input voltage to output voltage ratio. With a total efficiency up to 85%, the device is ideal for portable battery-powered equipment. The input voltage range of 2.7 V to 5.5 V allows the devices to be powered from batteries or from fixed 3.3-V or 5-V supplies. The TPS6513x comes in a small 4-mm × 4- mm VQFN-24 package. Together with a minimum switching frequency of 1.25 MHz, the device enables designing small power supply applications because it requires only a few small external components.

The converter operates with a fixed frequency PWM control topology and, if power-save mode is enabled, it uses a pulse-skipping mode at light-load currents. It operates with only 500-µA device quiescent current. Independent enable pins allow power-up and powerdown sequencing for both outputs. The device has an internal current limit overvoltage protection and a thermal shutdown for highest reliability under fault conditions.

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2.7-V to 5.5-V Input Voltage Range

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Dual Adjustable Output Voltages Up to 15 V and

Down to –15 V

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800-mA Typical Switch Current Limit at Boost and

Inverter Main Switches at

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2-A Typical Switch Current Limit at Boost and

Inverter Main Switches at TPS65131

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Up to 89% Efficiency at Positive Output

Voltage Rail

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Up to 81% Efficiency at Negative Output

Voltage Rail

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Power-Save Mode for High Efficiency at Low Load

Currents

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Independent Enable Inputs for Power-Up and

Power-Down Sequencing

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Control Output for External PFET to Support

Completely Disconnecting the Battery

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Minimum 1.25-MHz Fixed Frequency PWM

Operation

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Thermal Shutdown

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Overvoltage Protection on Both Outputs

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1-µA Shutdown Current

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Small 4-mm × 4-mm VQFN-24 Package RGE