CAN ALSO BE CONFIGURED IN CURRENT MODE; PWM CONTROL TECHNIQUE ALSO POSSIBLE
Analog IC - Other Type:
SWITCHING CONTROLLER
Control Mode:
CURRENT/VOLTAGE-MODE
Control Technique:
RESONANT CONTROL
Input Voltage-Max:
20 V
Input Voltage-Min:
11 V
Input Voltage-Nom:
12 V
JESD-30 Code:
R-PDSO-G28
JESD-609 Code:
e4
Length:
17.9 mm
Moisture Sensitivity Level:
2
Number of Functions:
1
Number of Terminals:
28
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-25 °C
Output Current-Max:
3 A
Output Voltage-Max:
5.08 V
Output Voltage-Min:
4.92 V
Output Voltage-Nom:
5 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
SOP
Package Equivalence Code:
SOP28,.4
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE
Peak Reflow Temperature (Cel):
260
Qualification Status:
Not Qualified
Seated Height-Max:
2.65 mm
Supply Current-Max (Isup):
30 mA
Supply Voltage-Max (Vsup):
29 V
Supply Voltage-Min (Vsup):
10.75 V
Supply Voltage-Nom (Vsup):
12 V
Surface Mount:
YES
Switcher Configuration:
PUSH-PULL
Switching Frequency-Max:
1000 kHz
Technology:
BIPOLAR
Temperature Grade:
OTHER
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
1.27 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
7.5 mm
UC2875DWPG4 Frequently Asked Questions (FAQs)
Texas Instruments provides a detailed application note (SLUA271) that covers PCB layout guidelines, thermal considerations, and component placement recommendations for the UC2875DWPG4. It's essential to follow these guidelines to ensure proper operation and minimize electromagnetic interference (EMI).
The UC2875DWPG4 datasheet provides a transformer design guide, but it's crucial to consider factors like core material, turns ratio, and leakage inductance when selecting a transformer. TI also offers a transformer design tool (TDK Transformer Designer) to help with the selection process.
The UC2875DWPG4 is a high-performance, high-frequency (up to 1 MHz) controller, whereas other controllers like the UC3842 or UC3825 have lower frequency limits. The UC2875DWPG4 also has a more comprehensive set of protection features, such as overcurrent protection and undervoltage lockout.
The UC2875DWPG4 has a built-in OVP feature, but it requires an external voltage sensing circuit. TI provides an application note (SLUA272) that details a recommended OVP implementation using a voltage divider and a comparator.
The UC2875DWPG4 has a high-power dissipation capability, so thermal management is crucial. Ensure good airflow, use a heat sink if necessary, and follow the recommended PCB layout guidelines to minimize thermal resistance. TI also provides thermal design guidelines in the datasheet.
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UC2875DWPG4 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.
