Allicdata Part #: | 296-11181-5-ND |
Manufacturer Part#: |
UC2843N |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG CTRLR MULT TOPOLOGY 8DIP |
More Detail: | Boost, Buck, Buck-Boost, Flyback, Forward Regulato... |
DataSheet: | UC2843N Datasheet/PDF |
Quantity: | 1367 |
Series: | -- |
Packaging: | Tube |
Part Status: | Active |
Output Type: | Transistor Driver |
Function: | Step-Up, Step-Down, Step-Up/Step-Down |
Output Configuration: | Positive |
Topology: | Boost, Buck, Buck-Boost, Flyback, Forward |
Number of Outputs: | 1 |
Output Phases: | 1 |
Voltage - Supply (Vcc/Vdd): | 7.6 V ~ 30 V |
Frequency - Switching: | Up to 500kHz |
Duty Cycle (Max): | 97% |
Synchronous Rectifier: | No |
Clock Sync: | No |
Serial Interfaces: | -- |
Control Features: | Frequency Control |
Operating Temperature: | -40°C ~ 85°C (TA) |
Package / Case: | 8-DIP (0.300", 7.62mm) |
Supplier Device Package: | 8-PDIP |
Base Part Number: | UC2843 |
Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us: sales@allicdata.com
UC2843N Application Field and Working Principle
UC2843N is a pulse width modulated (PWM) voltage controller from Texas Instruments, which belongs to the PMIC – Voltage Regulators – DC DC Switching Controllers family. It is mainly used to regulate the output voltage level by precisely controlling the switching frequency and duty cycle. The output voltage level can be adjusted based on the reference voltage and current limit. It has the capability to reduce electromagnetic interference (EMI) and to achieve high accuracy via synchronous rectification (if needed).
Features
Some of the key features of the UC2843N PWM voltage controller include:
- High-performance control loop architecture with on-chip regulator
- On-chip feedback divider
- Architecture is expandable to support current-mode regulation
- Operates from 10V to 50V with 600kHz - 1.0MHz switching frequency
- Internal soft-start
- Flexible oscillator with external synchronization
- Hiccup-mode output over-current protection
- Circuit is monolithic and highly integrated
Applications of UC2843N
The UC2843N PWM voltage controller is extensively used in a variety of applications such as consumer, automotive, industrial, or medical due to its advantages in terms of performance. These applications include personal computer, external storage and hard drive, personal video recorder, AA, AAA, C & D battery chargers, android TV box, DC-DC converters, Power over Ethernet (PoE) converter, and li-ion battery chargers. It is also used in LED lighting control and in automotive applications such as voltage and current regulation, lighting control, and transmission control.
Working Principle of UC2843N
The UC2843N PWM voltage controller is an on-chip voltage-mode control loop based off the required input and output voltage. Voltage-mode control is a compensation concept that uses a sensed output voltage for regulating the average output current. This regulation concept implements an embedded error amplifier, an internal current limit and the external opto-isolator coupled darlington power transistor.
At the input side, the UC2843N provides a means of setting the switching frequency by connecting an external resistor. This can be used to either strictly determine the frequency or to be adjustable by a voltage input, allowing dynamic frequency control based on the input voltage or other conditions. For the output stage, the UC2843N requires, at least, an external opto-isolator, a darlington power transistor, a free-wheeling diode and a few components (resistors, capacitors) to achieve the desired output characteristics.
The working principle of the UC2843N uses the voltage-mode control loop. The input voltage and the feedback voltage from the output (also known as the error amplifier voltage) are compared with each other to generate the internal clock pulse. The pulse is then shaped and used to trigger the power output stage, in turn controlling the output voltage. High voltage levels turn off the power output and low levels cause it to turn on, thus regulating the output voltage.
Conclusion
UC2843N is a versatile pulse width modulated (PWM) voltage controller from Texas Instruments that belongs to the PMIC – Voltage Regulators – DC DC Switching Controllers family. It has several applications such as in personal computers, LED lighting control and automotive control. Its voltage-mode control loop works by comparing the input voltage level with the feedback voltage from the output and generating an internal clock pulse to control the output voltage. The UC2843N voltage controller is a cost-effective solution that can provide efficient and accurate control over the output voltage.
The specific data is subject to PDF, and the above content is for reference
Part Number | Manufacturer | Price | Quantity | Description |
---|
UC2843AQD8RQ1 | Texas Instru... | -- | 1000 | IC REG CTRLR MULT TOPOLOG... |
UC2842AD8TR | Texas Instru... | -- | 1000 | IC PWM BOOST FLYBACK CM 8... |
UC2845AQDR | Texas Instru... | -- | 1000 | IC REG CTRLR MULT TOP 14S... |
UC2845AQD8R | Texas Instru... | -- | 1000 | IC REG CTRLR MULT TOPOLOG... |
UC282TDTR-1 | Texas Instru... | -- | 1000 | IC REG LIN 1.5V 3A DDPAK/... |
UC285TDKTTT-2 | Texas Instru... | 0.0 $ | 1000 | IC REG LIN 2.1V 5A DDPAK/... |
UC282TDKTTT-2 | Texas Instru... | 0.0 $ | 1000 | IC REG LIN 2.1V 3A DDPAK/... |
UC285T-1 | Texas Instru... | 0.0 $ | 1000 | IC REG LINEAR 1.5V 5A TO2... |
UC285T-2 | Texas Instru... | 0.0 $ | 1000 | IC REG LINEAR 2.1V 5A TO2... |
UC282TD-3 | Texas Instru... | 0.0 $ | 1000 | IC REG LIN 2.5V 3A DDPAK/... |
UC282TDKTTT-ADJ | Texas Instru... | -- | 250 | IC REG LIN POS ADJ 3A DDP... |
UC282TDKTTT-3 | Texas Instru... | -- | 1000 | IC REG LIN 2.5V 3A DDPAK/... |
UC282TDKTTT-1 | Texas Instru... | 3.95 $ | 1000 | IC REG LIN 1.5V 3A DDPAK/... |
UC282T-2 | Texas Instru... | 5.46 $ | 148 | IC REG LINEAR 2.1V 3A TO2... |
UC282T-3 | Texas Instru... | 5.46 $ | 146 | IC REG LINEAR 2.5V 3A TO2... |
UC282T-1 | Texas Instru... | 5.46 $ | 120 | IC REG LINEAR 1.5V 3A TO2... |
UC282T-ADJ | Texas Instru... | -- | 109 | IC REG LINEAR POS ADJ 3A ... |
UC285TDKTTT-ADJ | Texas Instru... | -- | 1000 | IC REG LIN POS ADJ 5A DDP... |
UC285TDKTTT-1 | Texas Instru... | 5.45 $ | 1000 | IC REG LIN 1.5V 5A DDPAK/... |
UC285TDKTTT-3 | Texas Instru... | 5.45 $ | 1000 | IC REG LIN 2.5V 5A DDPAK/... |
UC285T-3 | Texas Instru... | 7.53 $ | 615 | IC REG LINEAR 2.5V 5A TO2... |
UC285T-ADJ | Texas Instru... | 7.53 $ | 111 | IC REG LINEAR POS ADJ 5A ... |
UC2844BD1R2G | ON Semicondu... | -- | 2500 | IC REG CTRLR PWM CM 8-SOI... |
UC2844D8TR | Texas Instru... | -- | 2500 | IC PWM BOOST FLYBCK ISO C... |
UC2842N | Texas Instru... | -- | 2736 | IC CUR-MODE PWM CONT 8-DI... |
UC2844N | Texas Instru... | -- | 1644 | IC PWM BOOST FLYBCK ISO C... |
UC2843N | Texas Instru... | -- | 1367 | IC REG CTRLR MULT TOPOLOG... |
UC2843AD8 | Texas Instru... | -- | 1154 | IC REG CTRLR MULT TOPOLOG... |
UC2846DW | Texas Instru... | -- | 4669 | IC REG CTRLR MULT TOP 16S... |
UC2825DW | Texas Instru... | -- | 1000 | IC REG CTRLR MULT TOP 16S... |
UC2846N | Texas Instru... | -- | 623 | IC REG CTRLR MULT TOPOLOG... |
UC2825ADW | Texas Instru... | -- | 266 | IC REG CTRLR MULT TOP 16S... |
UC2825AN | Texas Instru... | -- | 299 | IC REG CTRLR MULT TOPOLOG... |
UC2823ADW | Texas Instru... | -- | 480 | IC REG CTRLR MULT TOP 16S... |
UC2845BD1R2G | ON Semicondu... | 0.16 $ | 2500 | IC REG CTRLR BOOST/FLYBAC... |
UC2843BDR2G | ON Semicondu... | -- | 2500 | IC REG CTRLR FLYBACK 14SO... |
UC2844BD1013TR | STMicroelect... | -- | 2500 | IC REG CTRLR BST FLYBK IS... |
UC2844BNG | ON Semicondu... | 0.43 $ | 1847 | IC REG CTRLR PWM CM 8-DIP... |
UC2842BNG | ON Semicondu... | 0.43 $ | 1693 | IC REG CTRLR BST FLYBK IS... |
UC2844BD1 | STMicroelect... | -- | 1631 | IC REG CTRLR BST FLYBK IS... |
Switching Controller Polyphase Bidirecti...
IC POWER MANAGEMENTBuck-Boost Regulator ...
IC REG CTRLR BUCK 8-PSOPBuck Regulator P...
IC REG CTRLR BUCK 16TSSOPBuck Regulator ...
IC REG CTRLR BUCK 14TSSOPBuck Regulator ...
IC REG CTRLR BUCK/SEPIC 32QFNBuck Regula...