• - 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 TPS54162 is a step-down switch-mode power supply with a voltage supervisor and an integrated NMOS switching FET. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by-cycle current limit. The device also features low-power mode operation under light load conditons which reduces the supply current to 50 µA (typical). By pulling the EN pin low, the supply shutdown current is reduced to 1 µA (typical).

An open drain reset signal indicates when the nominal output drops below the reset threshold set by an external resistor divider network. The output voltage start up ramp is controlled by a soft start capacitor.

特性

• Asynchronous Switch Mode Regulator
• 3.6 V to 48 V Operating Range, Withstands Transients up to 60 V
• 1 A Maximum Load Current
• 50 µA Typical Quiescent Current
• 200 kHz to 2.2 MHz Switching Frequency
• 0.8 V ± 1.5% Voltage Reference
• High Voltage Tolerant Enable Input
• Soft Start on Enable Cycle
• Slew Rate Control on Internal Power Switch
• Low-Power Mode for Light Load Conditions
• Programmable Delay for Power-On Reset
• External Compensation for Error Amplifier
• Reset Function Filter Time for Fast Negative Transients
• Programmable Overvoltage, Undervoltage Output Monitor
• Thermal Sensing and Shutdown
• Switch Current Limit Protection
• Short Circuit and Overcurrent Protection of FET
• Junction Temperature Range: –40°C to 150°C
• 20-Pin HTSSOP PowerPAD™ Package
• APPLICATIONS