SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Screening Level:
AEC-Q100
Seated Height-Max:
1.15 mm
Supply Current-Max:
3 mA
Supply Voltage-Max:
18 V
Supply Voltage-Min:
5.5 V
Supply Voltage-Nom:
13.5 V
Surface Mount:
YES
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Tin (Sn)
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Width:
3.9 mm
TLD21421EPXUMA1 Frequently Asked Questions (FAQs)
Infineon provides a recommended PCB layout in their application note AN2014-03, which includes guidelines for thermal vias, copper thickness, and component placement to ensure optimal thermal performance.
The input capacitor selection depends on the input voltage, output voltage, and output current. A general guideline is to choose a capacitor with a voltage rating of at least 1.5 times the input voltage, and a capacitance value between 1-10 μF. Additionally, consider the capacitor's ESR, ripple current, and temperature rating.
The maximum allowed voltage drop across the internal switch is not explicitly stated in the datasheet. However, as a general rule of thumb, it's recommended to keep the voltage drop below 1 V to ensure reliable operation and minimize power losses.
The TLD21421EPXUMA1 is rated for operation up to 150°C, but the device's performance and reliability may degrade at higher temperatures. It's essential to consider the device's thermal derating, and ensure proper cooling and thermal management in high-temperature applications.
To troubleshoot overcurrent protection issues, check the input voltage, output current, and sense resistor values. Ensure that the sense resistor is correctly connected and has the recommended value. Also, verify that the device is not overheating, and that the PCB layout is correct.
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TLD21421EPXUMA1 Overview
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