Description:Current-Mode Fixed Frequency Operation (65 & 100 kHz) - 130 kHz for B version only; Peak Current: NCP1075A/B = 400 mA; 2nd Level Current Protection; Over Power Protection; Adjustable Brown-out Protection and OVP; Frequency Jittering (including during frequency foldback mode); 300 µA No Load Power Consumption; Frequency Foldback Operation; Auto-Recovery Output Short Circuit Protection with Timer-Based Detection; Dynamic Self-Supply (DSS); Skip-Cycle Operation at Low Peak Current; Integrated 700 V MOSFET with
The recommended PCB layout for optimal thermal performance involves placing the device on a 2-layer or 4-layer board with a solid ground plane on the bottom layer, and using thermal vias to connect the exposed pad to the ground plane. Additionally, keeping the copper traces wide and short can help to reduce thermal resistance.
To ensure stability and prevent oscillations in the output voltage, it is recommended to use a minimum output capacitance of 10uF with an ESR of 1 ohm or less, and to place the capacitor as close to the output pin as possible. Additionally, using a low-ESR capacitor and minimizing the loop area of the output traces can help to reduce the risk of oscillations.
The maximum input voltage that can be applied to the NCP1075BAP065G without damaging it is 18V. Exceeding this voltage can cause permanent damage to the device.
The power dissipation of the device can be calculated using the formula Pd = (Vin - Vout) x Iout. To ensure the device is within the safe operating area, the calculated power dissipation should be compared to the maximum power dissipation rating specified in the datasheet, and the device should be operated within the recommended operating temperature range.
The recommended input capacitor value is 1uF to 10uF, and the recommended type is a low-ESR ceramic capacitor, such as an X5R or X7R dielectric. This helps to filter out input noise and ensure stable operation.
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NCP1075BAP065G Overview
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