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:
e3
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):
260
Seated Height-Max:
1.2 mm
Supply Current-Max (Isup):
2 mA
Surface Mount:
YES
Switcher Configuration:
PUSH-PULL
Switching Frequency-Max:
500 kHz
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
LM5642XMT/NOPB Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using bypass capacitors to reduce noise and ringing.
To ensure proper biasing, follow the recommended biasing circuit in the datasheet, and make sure to provide a stable voltage supply to the VCC pin. Additionally, ensure that the input signal is within the recommended range and that the output is properly terminated.
The LM5642 is rated for operation from -40°C to 125°C, but it's recommended to derate the device for operation above 85°C to ensure reliability and prevent thermal shutdown.
To troubleshoot issues with the LM5642, start by verifying the PCB layout and biasing circuit, then check the input and output signals using an oscilloscope. Look for signs of oscillation, such as ringing or excessive noise, and check for proper termination and decoupling. If issues persist, consult the datasheet and application notes for guidance.
While the LM5642 is primarily designed as a voltage-controlled oscillator, it can be used in switching regulator applications with proper design and layout considerations. However, it's recommended to consult with a Texas Instruments application engineer or a experienced designer to ensure the device is used within its capabilities and that the design meets the required specifications.
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LM5642XMT/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.
