Description:No Input Voltage Sensing Requirement; High Precision Voltage Reference (±1.6% Over the Temperature Range); Wide Control Range for High Power Application (>150 W) Noise Immunity; Integrated Undervoltage and Overvoltage Protection; Pin-to-Pin Compatible with Industry Standards; Accurate and Programmable On Time Limitation; Transconductance Error Amplifier; Very Low Startup Current Consumption (< 35 µA); Low Typical Operating Current Consumption (2.1 mA); Source 500 mA / Sink 800 mA Totem Pole Gate Driver; Und
A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good thermal conductivity between the device and the PCB. A 2-layer or 4-layer PCB with a solid ground plane is recommended. Avoid placing thermal vias under the device, and keep the thermal pad clear of any obstacles.
To ensure reliable start-up and shutdown, ensure that the input voltage rises and falls monotonically, and that the input voltage is above the UVLO threshold (around 2.5V) before enabling the device. Also, ensure that the output voltage is within the specified range during start-up and shutdown.
The maximum output current capability of the NCP1608BDR2G is 1.5A. However, the actual output current capability may be limited by the thermal performance of the device and the PCB. It's recommended to derate the output current based on the ambient temperature and the thermal performance of the system.
The output voltage tolerance of the NCP1608BDR2G is ±2%. To compensate for this tolerance, it's recommended to use a voltage regulator with an adjustable output voltage, or to add a voltage trimming resistor network to the output stage.
The recommended input capacitor value is 10uF to 22uF, with an X5R or X7R dielectric type. The input capacitor should be placed as close as possible to the device, and should have a low ESR to minimize input voltage ripple.
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NCP1608BDR2G Overview
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