Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for voltage regulator design, such as keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths.
To ensure stability, make sure to use the recommended output capacitor value and type, and follow the datasheet's guidelines for input and output capacitor selection. Additionally, ensure that the input voltage is within the recommended range and that the device is operated within its specified temperature range.
While the datasheet specifies a maximum input voltage of 15V, it's recommended to derate the input voltage to 12V or less to ensure reliable operation and to prevent damage to the device.
The LM136AH-5.0-SMD is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. It's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation.
Power dissipation can be calculated using the formula Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current. Make sure to consider the device's thermal resistance and maximum junction temperature when calculating power dissipation.
LM136AH-5.0-SMD datasheet
by Texas Instruments
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