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-PDIP-T20
JESD-609 Code:
e4
Length:
25.4 mm
Number of Functions:
1
Number of Terminals:
20
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:
DIP
Package Equivalence Code:
DIP20,.3
Package Shape:
RECTANGULAR
Package Style:
IN-LINE
Qualification Status:
Not Qualified
Seated Height-Max:
5.08 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:
NO
Switcher Configuration:
PUSH-PULL
Switching Frequency-Max:
1000 kHz
Technology:
BIPOLAR
Temperature Grade:
OTHER
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
THROUGH-HOLE
Terminal Pitch:
2.54 mm
Terminal Position:
DUAL
Width:
7.62 mm
UC2875NG4 Frequently Asked Questions (FAQs)
The UC2875NG4 is a high-frequency switching regulator, and proper PCB layout is crucial for its operation. TI recommends a 4-layer PCB with a solid ground plane, and the use of vias to connect the top and bottom layers. The input and output capacitors should be placed close to the IC, and the feedback network should be routed away from the switching node. A detailed layout guide is available in the TI application note SLUA271.
The UC2875NG4 requires a Type II compensation network to ensure stability. The compensation components (R1, R2, C1, and C2) should be selected based on the output voltage, output capacitance, and desired bandwidth. TI provides a compensation calculator tool to help designers determine the correct component values. Additionally, the datasheet provides a detailed explanation of the compensation network and the design equations.
The UC2875NG4 has an absolute maximum input voltage rating of 18V. However, the recommended maximum input voltage is 15V to ensure reliable operation and to prevent damage to the internal components. Exceeding the recommended input voltage may reduce the device's lifespan or cause it to fail.
Yes, the UC2875NG4 can be used in a synchronous rectification configuration to improve efficiency. However, this requires additional external components, such as a synchronous rectifier MOSFET and a Schottky diode. TI provides an application note (SLUA272) that describes the design considerations and component selection for synchronous rectification.
The UC2875NG4 has built-in overcurrent protection (OCP) and overvoltage protection (OVP) features. The OCP threshold can be adjusted using an external resistor (Rocp). Additionally, designers can add external overvoltage protection circuits, such as a voltage supervisor or a crowbar circuit, to protect the device and the system from overvoltage conditions.
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
UC2875NG4 Overview
Use the download button to access the UC2875NG4 schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like UC287,
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.
