ALSO OPERATES IN ADJUSTABLE MODE FROM 1.3V TO 32.4
Analog IC - Other Type:
DUAL SWITCHING CONTROLLER
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
36 V
Input Voltage-Min:
4.5 V
Input Voltage-Nom:
5 V
JESD-30 Code:
R-PDSO-G28
JESD-609 Code:
e0
Length:
9.7 mm
Moisture Sensitivity Level:
3
Number of Functions:
1
Number of Outputs:
2
Number of Terminals:
28
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Output Current-Max:
20 A
Output Voltage-Max:
34 V
Output Voltage-Min:
1.236 V
Output Voltage-Nom:
5 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
TSSOP
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
235
Qualification Status:
Not Qualified
Seated Height-Max:
1.2 mm
Surface Mount:
YES
Switcher Configuration:
PUSH-PULL
Switching Frequency-Max:
250 kHz
Technology:
BICMOS
Temperature Grade:
AUTOMOTIVE
Terminal Finish:
TIN LEAD
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
20
Width:
4.4 mm
LM5642MTCX Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output traces short, using a solid ground plane, and minimizing noise coupling. Additionally, ensure the device is placed near the power supply and away from high-frequency components.
The output capacitor value depends on the desired output voltage ripple, output current, and stability. A general rule of thumb is to use a capacitor with a value between 10uF to 47uF, with a voltage rating of at least 2x the output voltage. However, it's recommended to consult the datasheet and perform simulations to determine the optimal value for your specific application.
Although the datasheet specifies a maximum input voltage of 42V, it's essential to consider the voltage rating of the internal components and the device's thermal limitations. As a general guideline, it's recommended to keep the input voltage below 36V to ensure reliable operation and prevent overheating.
To ensure the device operates within the recommended junction temperature range (TJ) of -40°C to 125°C, it's crucial to provide adequate heat sinking, such as a thermal pad or heat sink, and to keep the device away from high-temperature components. Additionally, ensure good airflow and avoid blocking the airflow around the device.
A recommended input filter configuration includes a series resistor (Rs) and a capacitor (Ci) in parallel with the input voltage. The values of Rs and Ci depend on the specific application, but a general guideline is to use Rs = 10Ω to 100Ω and Ci = 10nF to 100nF. This filter helps to reduce noise and EMI, ensuring stable operation and compliance with regulatory standards.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
LM5642MTCX Overview
Use the download button to access the LM5642MTCX schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like LM564,
or try a keyword search, such as Switching Regulator or Controllers
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.
