SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.2 mm
Surface Mount:
YES
Switcher Configuration:
BUCK
Switching Frequency-Max:
1500 kHz
Technology:
BICMOS
Temperature Grade:
AUTOMOTIVE
Terminal Finish:
Matte Tin (Sn)
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
LM20143MH/NOPB Frequently Asked Questions (FAQs)
A good PCB layout for the LM20143MH/NOPB should prioritize thermal dissipation. Place the device near a thermal pad or a heat sink, and ensure good copper pour coverage around the device. Avoid routing high-current traces near the device, and use thermal vias to dissipate heat.
To ensure stability, ensure that the output capacitor has a low equivalent series resistance (ESR) and a high capacitance value. Also, add a small ceramic capacitor (e.g., 10nF) in parallel with the output capacitor to filter high-frequency noise. Additionally, ensure that the input capacitor is properly sized and placed close to the device.
A 10uF to 22uF ceramic capacitor with an X5R or X7R dielectric is recommended for the input capacitor. This value provides a good balance between filtering and stability. Ensure that the capacitor is placed close to the device and has a low ESR.
The output voltage ripple and noise can be calculated using the device's datasheet specifications and the output capacitor value. The ripple can be estimated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.
The maximum ambient temperature for the LM20143MH/NOPB is 125°C. As the ambient temperature increases, the device's internal junction temperature also increases, which can affect the output voltage. Ensure that the device is properly cooled, and consider derating the output voltage at high temperatures to maintain stability.
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LM20143MH/NOPB Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
