• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The TPS6240x device series are synchronous dual step-down DC-DC converters optimized for battery powered portable applications. They provide two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With the EasyScale serial interface the output voltages can be modified during operation. The fixed output voltage versions TPS62401, TPS62402, TPS62403, and TPS62404 support one pin controlled simple Dynamic Voltage Scaling for low power processors.

The TPS6240x 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.

特性

• Qualified for Automotive Applications
• High Efficiency—Up to 95%
• V_IN 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 V_IN
• 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
• Available in a 10-Pin QFN (3mm×3mm)