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UC2861QG3 is listed in the AC DC Converters, Offline Switchers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC OFFLINE SW MULT TOP 20PLCC. Review the specifications below when checking this part for your BOM.
AC DC Converters, Offline Switchers specifications for UC2861QG3
- Description：IC OFFLINE SW MULT TOP 20PLCC
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Isolation：Non-Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：-
- Topology：Full-Bridge, Half-Bridge, Push-Pull
- Voltage - Start Up：16.5 V
- Voltage - Supply (Vcc/Vdd)：10.5V ~ 22V
- Duty Cycle：-
- Frequency - Switching：10kHz ~ 1MHz
- Fault Protection：-
- Control Features：Soft Start
- Operating Temperature：-25°C ~ 85°C (TA)
- Package / Case：20-LCC (J-Lead)
- Supplier Device Package：20-PLCC (9x9)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：-
AC DC Converters, Offline Switchers datasheet and documents for UC2861QG3
AC DC Converters, Offline Switchers Overview
The UC2861QG3 is a resonant-mode PWM controller manufactured by Texas Instruments. It features an alternating output configuration with fixed off-time control and includes UVLO thresholds of 16.5V/10.5V. The device operates within a supply voltage range of 10.5 V to 22 V and supports switching frequencies from 10 kHz to 1 MHz. It is housed in a 20-LCC (J-Lead) package and functions across a temperature range of -25°C to 85°C.
AC DC Converters, Offline Switchers Feature Summary
- Resonant-mode PWM control with alternating outputs
- Fixed off-time operation for stable regulation
- Integrated soft start capability
- Designed for harsh environment reliability
AC DC Converters, Offline Switchers Applications
- High-efficiency power supply designs
- Resonant converter topologies
- Industrial power management systems
AC DC Converters, Offline Switchers Procurement Notes
Verify the specific suffix QG3 against official TI documentation to confirm package type and environmental rating. Ensure compatibility with existing PCB footprints for the 20-LCC J-Lead configuration. Confirm availability status as part numbers may be obsolete or subject to change without notice.
AC DC Converters, Offline Switchers Selection Notes
Select this component when resonant-mode efficiency and fixed off-time control are required. The wide frequency range allows optimization for size or performance. Verify that the input voltage stays within the 10.5 V to 22 V operating window and that the thermal environment fits the specified temperature range.
AC DC Converters, Offline Switchers Part Context
This part belongs to Texas Instruments' legacy power management portfolio. It is designed for applications requiring robust control in resonant converters. The QG3 suffix typically denotes a specific package variant and environmental qualification level defined by the manufacturer.
AC DC Converters, Offline Switchers Replacement Considerations
Check for direct pin-compatible substitutes in the UC28xx series. Verify if newer generations offer improved efficiency or updated packaging while maintaining functional equivalence.
AC DC Converters, Offline Switchers FAQ
What is the switching frequency range?
The UC2861QG3 supports an adjustable switching frequency range from 10 kHz to 1 MHz.
Does the device include soft start?
Yes, the UC2861QG3 features integrated soft start functionality.
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