- The input voltage range is 2.95V to 5.5V
- Accurate current limiting minimizes inductor size
- 97% peak efficiency
- 可调开关频率（500千赫 - 1.5兆赫）
- 32mΩ integrated FET switch
- Boot into a prebiased load
- Output voltage tracking
- Peak current mode control
- The adjustable output voltage is as low as 0.8V
- Adjustable soft-start with external capacitors
- Precision enable pin with hysteresis
- Integrated overvoltage protection, undervoltage lockout, power good, and thermal shutdown
- eTSSOP - 16 bare pad package
illustrate
LM20144是一个全功能的可调频率的同步降压稳压器能够提供高达4A的连续输出电流。 The current-mode control loop can be compensated and stabilized with almost any type of output capacitor. In most cases, compensation devices, which require only two external components, provide maximum flexibility and ease of use. Optimized operation from 2.95V to 5.5V input voltage range, making it suitable for a wide range of devices in low voltage systems.
The device features internal overvoltage protection (OVP) and overcurrent protection (OCP) circuitry to improve system reliability. An enable pin and integrated undervoltage lockout allow a precision device to be tightly controlled and sequencing turned on. Both a fixed internally and externally adjustable soft-start circuit start-up inrush current is limited. Possible with integrated power good circuit fault detection and power sequencing.
LM20144是在多轨电源架构设计工作。 The output voltage of the device can be configured to track a higher voltage rail, using SS/TRK pins. 如果LM20144的输出预偏置启动时，它不会吸收电流拉输出低，直到内部软启动斜坡超过电压反馈引脚。
The frequency of such a device can be adjusted from 500 kHz to 1.5 MHz by connecting an external resistor to the RT pin to ground.
LM20144是在一个16引脚的eTSSOP封装提供带裸焊盘的可焊接到PCB上，省去了笨重的散热器需要。
apply
- The design is simple, and the load is regulated from a high efficiency angle from a 5V or 3.3V bus
- High performance DSP FPGAs, ASICs and microprocessors
- Broadband, network and optical communications infrastructure
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