TPS62405-Q1中文资料具有单总线接口的汽车类、双通道固、定输出电压、400mA 和 600mA、2.25MHz 降压转换器数据手册TI规格书

描述 Description

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, TPS62404-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.

特性 Features

• Qualified for automotive applications
• Device temperature grade 1: –40°C to 125°C operating junction temperature range
• Device CDM ESD classification level C4B
• High efficiency—up to 95%
• 2.25-MHz Fixed-frequency operation
• Adjustable output voltage from 0.6 V to VIN
• EasyScale™ optional one-pin serial interface
• 180° Out-of-phase operation
• Typical 32-µA quiescent current for both converters
• 100% Duty cycle for lowest dropout