ALSO OPERATES IN PFM CONTROL TECHNIQUE; ADJUSTABLE OUTPUT MODE FROM 0.6 TO 4.2V
Analog IC - Other Type:
BATTERY CHARGE CONTROLLER
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
5.5 V
Input Voltage-Min:
2.7 V
Input Voltage-Nom:
3.6 V
JESD-30 Code:
R-PBGA-B12
JESD-609 Code:
e1
Length:
2.499 mm
Moisture Sensitivity Level:
1
Number of Functions:
1
Number of Outputs:
1
Number of Terminals:
12
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-30 °C
Output Current-Max:
0.75 A
Output Voltage-Max:
4.2 V
Output Voltage-Min:
0.6 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
VFBGA
Package Shape:
RECTANGULAR
Package Style:
GRID ARRAY, VERY THIN PROFILE, FINE PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
0.675 mm
Supply Current-Max (Isup):
1900 mA
Surface Mount:
YES
Switcher Configuration:
BUCK-BOOST
Switching Frequency-Max:
2700 kHz
Technology:
CMOS
Temperature Grade:
OTHER
Terminal Finish:
Tin/Silver/Copper (Sn/Ag/Cu)
Terminal Form:
BALL
Terminal Pitch:
0.5 mm
Terminal Position:
BOTTOM
Time@Peak Reflow Temperature-Max (s):
30
Width:
1.9915 mm
LM3269TLX/NOPB Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layout, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
To ensure stability, make sure to follow the recommended component values and layout guidelines in the datasheet. Additionally, use a sufficient output capacitor with a low ESR, and consider adding a small ceramic capacitor in parallel with the output capacitor to improve stability.
While the datasheet specifies a maximum input voltage of 42V, it's recommended to derate the input voltage to 36V or lower to ensure reliable operation and to prevent damage to the IC.
The LM3269TLX/NOPB is rated for operation up to 125°C, but it's essential to consider the thermal design and ensure that the IC is properly heat-sinked to prevent overheating. Additionally, the output current may need to be derated at high temperatures to prevent thermal shutdown.
Start by checking the input voltage, output voltage, and output current to ensure they are within the specified ranges. Verify that the component values and layout meet the recommended guidelines in the datasheet. Use an oscilloscope to check for oscillations or noise on the output voltage. If the issue persists, consult the Texas Instruments support resources or contact their technical support team.
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LM3269TLX/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.
