TPS62404-Q1

具有单线接口的汽车类双通道固定输出电压 400mA 和 600mA、2.25MHz 降压转换器

The TPS6240x-Q1 family of devices are synchronous dual step-down DC-DC converters optimized for battery-powered portable applications and automotive systems. They provide two independent output voltage rails powered by rechargeable batteries or standard 3.3-V or 5-V voltage rail.

The EasyScale™ serial interface allows output-voltages modification during operation. The fixed-output-voltage versions, TPS62402-Q1, , and TPS62405-Q1 support one-pin-controlled simple dynamic voltage scaling for low-power processors.

The TPS6240x-Q1 operates at 2.25-MHz fixed switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load-current range. For low-noise applications, one can force the devices into fixed-frequency PWM mode by pulling the MODE/DATA pin high. The shutdown mode reduces the current consumption to 1.2-µA, typical. The devices allow the use of small inductors and capacitors to achieve a small solution size.

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Qualified for Automotive Applications

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AEC-Q100 Qualified With the Following Results:

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Device Temperature Grade 1: –40°C to 125°C

Operating Junction Temperature Range

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Device HBM ESD Classification Level H2

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Device CDM ESD Classification Level C4B

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High Efficiency—Up to 95%

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VIN Range From 2.5 V to 6 V

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2.25-MHz Fixed-Frequency Operation

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Output Current 400 mA and 600 mA

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Adjustable Output Voltage From 0.6 V to VIN

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Pin Selectable Output Voltage Supports Simple

Dynamic Voltage Scaling

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EasyScale™ Optional One-Pin Serial Interface

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Power-Save Mode at Light Load Currents

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180° Out-of-Phase Operation

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Output-Voltage Accuracy in PWM Mode ±1%

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Typical 32-µA Quiescent Current for Both Converters

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100% Duty Cycle for Lowest Dropout