TPS62405-Q1数据手册TI中文资料规格书

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
• AEC-Q100 qualified with the following results:
• Device temperature grade 1: –40°C to 125°C operating junction temperature range
• Device HBM ESD classification level H2
• Device CDM ESD classification level C4B

• High efficiency—up to 95%
• VIN Range from 2.5 V to 6 V
• 2.25-MHz Fixed-frequency operation
• Output current 400 mA and 600 mA
• Adjustable output voltage from 0.6 V to VIN
• Pin selectable output voltage supports simple dynamic voltage scaling
• EasyScale™ optional one-pin serial interface
• Power-save mode at light load currents
• 180° Out-of-phase operation
• Output-voltage accuracy in PWM mode ±1%
• Typical 32-µA quiescent current for both converters
• 100% Duty cycle for lowest dropout