TPS65050

6通道电源管理IC具有两个降压型转换器和4低输入电压LDO 6-CHANNEL POWER MGMT IC WITH TWO STEP-DOWN CONVERTERS AND 4 LOW-INPUT VOLTAGE LDOs

The TPS6505x family of devices are integrated power-management ICs for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. The TPS6505x devices provide two highly efficient, 2.25-MHz step-down converters targeted at providing the core voltage and I/O voltage in a processor-based system. Both step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents. For low noise applications, the devices can be forced into fixed-frequency PWM mode by pulling the MODE pin high. The TPS6505x devices also integrate two 400-mA LDO and two 200-mA LDO voltage regulators. Each LDO operates with an input voltage range from 1.5 V to 6.5 V, allowing them to be supplied from one of the step-down converters or directly from the main battery.

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Up To 95% Efficiency

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Output Current for DC-DC Converters:

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, TPS65054: 2 × 0.6 A

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TPS65051, TPS65052 and TPS65056:

DCDC1 = 1 A; DCDC2 = 0.6 A

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Output Voltages for DC-DC Converters

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Externally Adjustable and Fixed Versions

Available

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Digital Voltage Selection for the DCDC2

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VI Range for DC-DC Converters

From 2.5 V to 6 V

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2.25-MHz Fixed-Frequency Operation

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Power Save Mode at Light Load Current

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180° Out-of-Phase Operation

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Output Voltage Accuracy in PWM Mode ±1%

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Total Typical 32-µA Quiescent Current for Both

DC-DC Converters

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100% Duty Cycle for Lowest Dropout

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Two General-Purpose 400-mA, High PSRR LDOs

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Two General-Purpose 200-mA, High PSRR LDOs

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VI range for LDOs From 1.5 V to 6.5 V

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Digital Voltage Selection for the LDOs