Step-Down SWIFT™ DC/DC Converters Integrated Switch, Texas Instruments### 直流/直流开关调节器转换器(集成开关),Texas InstrumentsTexas Instruments 的此系列高度集成的高效开关稳压器包括步升(升压)、步降(降压)、步升/降(增压/降压)和反相类型,为每个直流稳压器应用提供高效的解决方案。
TPS54678 device is a full-featured 6-V, 6-A, synchronous step-down current mode converter with two integrated MOSFETs.
TPS54678 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced WQFN package.
TPS54678 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference VREF over temperature.
Efficiency is maximized through the integrated 12-mΩ MOSFETs. Using the enable pin, shutdown supply current is reduced by disabling the device.
The output voltage start-up ramp is controlled by the soft-start pin that can also be configured for sequencing or tracking. Monotonic start-up is achieved with prebiased voltage. Undervoltage lockout can be increased by programming the threshold with a resistor divider on the enable pin. An open-drain power good signal indicates the output is within 93% to 105% of its nominal voltage.
Cycle-by-cycle current limit, hiccup overcurrent protection and thermal shutdown protect the device during an overcurrent condition.
输出接口数 1
输出电压 0.6V ~ 4.5V
输出电流 6 A
静态电流 250 µA
调节输出数 1
开关频率 200kHz ~ 2MHz
拓扑结构 Buck
输入电压Max 6 V
输入电压Min 2.95 V
输出电压Max 4.5 V
输出电压Min 0.6 V
输出电流Max 6 A
工作温度Max 150 ℃
工作温度Min -40 ℃
电源电压 2.95 V
输入电压 2.95V ~ 6V
安装方式 Surface Mount
引脚数 16
封装 WFQFN-16
长度 3.15 mm
宽度 3.15 mm
高度 0.75 mm
封装 WFQFN-16
工作温度 -40℃ ~ 150℃
产品生命周期 Active
包装方式 Cut Tape CT
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TPS54678RTET TI 德州仪器 | 当前型号 | 当前型号 |
TPS54678RTER 德州仪器 | 完全替代 | TPS54678RTET和TPS54678RTER的区别 |