UC3845N
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- Mfr.Part #
- UC3845N
- Manufacturer
- Texas Instruments
- Package / Case
- 8-DIP (0.300, 7.62mm)
- Datasheet
- Download
- Description
- IC REG CTRLR MULT TOPOLOGY 8DIP
- Stock
- 1
- In Stock ：
- 1
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- Manufacturer :
- Texas Instruments
- Product Category :
- DC DC Switching Controllers
- Width :
- 6.35mm
- Length :
- 9.81mm
- Pbfree Code :
- yes
- Function :
- Step-Up, Step-Down, Step-Up/Step-Down
- Number of Terminations :
- 8
- Synchronous Rectifier :
- No
- Voltage - Supply (Vcc/Vdd) :
- 12V~28V
- Lifecycle Status :
- ACTIVE (Last Updated: 2 days ago)
- Supply Current-Max (Isup) :
- 25mA
- Frequency - Switching :
- 500kHz
- Lead Free :
- Lead Free
- Weight :
- 528.605208mg
- Quiescent Current :
- 11mA
- Base Part Number :
- UC3845
- Output Configuration :
- Positive, Isolation Capable
- JESD-609 Code :
- e4
- Duty Cycle (Max) :
- 48%
- Number of Outputs :
- 1
- RoHS Status :
- ROHS3 Compliant
- ECCN Code :
- EAR99
- Factory Lead Time :
- 6 Weeks
- Analog IC - Other Type :
- SWITCHING CONTROLLER
- Switcher Configuration :
- Buck-Boost
- Terminal Pitch :
- 2.54mm
- Mounting Type :
- Through Hole
- Control Technique :
- PULSE WIDTH MODULATION
- Frequency :
- 450kHz
- Output Voltage :
- 13.5V
- Packaging :
- Tube
- Terminal Position :
- Dual
- Output Current :
- 1A
- Operating Temperature :
- 0°C~70°C TA
- Topology :
- Buck, Boost, Flyback, Forward Converter
- Number of Pins :
- 8
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Surface Mount :
- No
- Control Mode :
- CURRENT-MODE
- Package / Case :
- 8-DIP (0.300, 7.62mm)
- Output Type :
- Transistor Driver
- Control Features :
- Frequency Control
- Nominal Input Voltage :
- 25V
- Input Voltage-Nom :
- 15V
- Max Duty Cycle :
- 50 %
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Rise Time :
- 50ns
- Input Current :
- 11mA
- Height :
- 5.08mm
- Thickness :
- 3.9mm
- Fall Time (Typ) :
- 50 ns
- REACH SVHC :
- No SVHC
- Power Dissipation :
- 1W
- Datasheets
- UC3845N
DC DC Switching Controllers Texas Instruments UC3845N Overview
The UC3845N by Texas Instruments is a high-performance DC DC switching controller designed for a broad range of power supply applications. This device integrates features that are essential for building flexible and robust switching power supplies, enhancing efficiency and reliability. With its capability to handle multiple topologies such as boost, buck, flyback, and forward converters, the UC3845N stands out as a versatile component in advanced power management solutions. Employing a built-in oscillator, error amplifier, and a high-current totem pole output, the UC3845N offers precise control over power supply performance, making it an indispensable part of modern electronic systems.
UC3845N Features
The UC3845N is equipped with several key features that enhance its functionality and reliability in power control applications. These include a programmable switching frequency up to 500 kHz, a 1A peak current capability, and an adjustable 5% duty cycle. It also boasts built-in under-voltage lockout and current limiting functionalities, ensuring safe operation under various conditions. Moreover, its high-performance characteristics make it suitable for high-density power applications, providing efficient power conversion and heat management.
UC3845N Applications
- Power Supplies for Consumer Electronics: Utilizes UC3845N in buck or boost converter configurations to efficiently manage power in devices such as TVs, gaming consoles, and home appliances.
- LED Drivers: Applies the UC3845N in flyback topology to deliver stable and efficient current for LED lighting systems, enhancing longevity and luminosity.
- Telecommunication Equipment: Employs UC3845N in forward converter topology to ensure reliable and efficient power supply solutions for routers, switches, and other networking hardware.
- Battery Chargers: Makes use of the UC3845N's ability to control charging cycles in applications requiring precise battery management, such as smartphones and laptops.
- Industrial Systems: Leverages UC3845N's robust design in harsh industrial environments for equipment like automation controllers and industrial PCs that demand reliable power management.
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