ALSO 5V & 12V FIXED O/P VTG AVAILABLE; PFM CONTROL TECHNIQUE ALSO AVAILABLE
Analog IC - Other Type:
SWITCHING REGULATOR
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
65 V
Input Voltage-Min:
4.5 V
Input Voltage-Nom:
12 V
JESD-30 Code:
S-PQCC-N29
JESD-609 Code:
e4
Length:
6 mm
Moisture Sensitivity Level:
2
Number of Functions:
1
Number of Terminals:
29
Operating Temperature-Max:
150 °C
Operating Temperature-Min:
-40 °C
Output Current-Max:
6 A
Output Voltage-Max:
36 V
Output Voltage-Min:
0.8 V
Output Voltage-Nom:
3.3 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
VQCCN
Package Equivalence Code:
LCC29(UNSPEC)
Package Shape:
SQUARE
Package Style:
CHIP CARRIER, VERY THIN PROFILE
Packing Method:
TR, 13 INCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1 mm
Surface Mount:
YES
Switcher Configuration:
BUCK
Switching Frequency-Max:
2200 kHz
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
NO LEAD
Terminal Pitch:
0.5 mm
Terminal Position:
QUAD
Time@Peak Reflow Temperature-Max (s):
30
Width:
6 mm
LM70660RRXR 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 separating analog and digital grounds, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, TI recommends using a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
The output capacitor selection depends on the output voltage, output current, and desired transient response. TI recommends using a low-ESR capacitor with a value between 10uF to 100uF. A higher capacitance value can improve transient response but may increase the startup time. It's essential to consider the capacitor's voltage rating, ESR, and temperature coefficient when making a selection.
The LM70660RRXR has an absolute maximum input voltage rating of 42V. However, the recommended maximum input voltage is 36V to ensure reliable operation and to prevent damage to the device. Exceeding the recommended maximum input voltage can reduce the device's lifespan or cause permanent damage.
The LM70660RRXR does not have built-in OVP. To implement OVP, you can use an external voltage supervisor or a dedicated OVP IC. You can also use a zener diode or a voltage-clamping device to limit the input voltage. However, it's essential to ensure that the OVP circuitry does not interfere with the device's normal operation.
The LM70660RRXR has a thermal derating of 30°C/W (junction-to-ambient thermal resistance). This means that the device's power dissipation must be derated by 30°C/W above the ambient temperature. For example, if the ambient temperature is 50°C, the device's power dissipation must be reduced by 50% to prevent overheating. Thermal derating can affect the device's performance, such as reducing the output current or increasing the output voltage ripple.
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LM70660RRXR 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.
