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Vedi Specifiche Tecniche

UC3843AN +BOM

Switching Controllers with Current Mode of 0.5mA

Produttore:

Texas Instruments
ProduttorePart #:

UC3843AN
Scheda dati:

UC3843AN Scheda dati (PDF)
Topology:

Boost, Buck, Flyback, Forward
Control Mode:

Current
Duty Cycle (max) (%):

100
Switching Frequency (max) (kHz):

500
EDA/CAD Modelli:

Richiedi modelli CAD gratuiti per UC3843AN

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UC3843AN Descrizione generale

The UC3843AN, manufactured by Texas Instruments, is a versatile PWM controller IC commonly used in switch-mode power supply applications. It operates in voltage mode control and provides precise regulation of output voltage. The device integrates functions such as a precision voltage reference, error amplifier, PWM comparator, and a high-current totem-pole output stage. Its internal oscillator can be adjusted over a wide frequency range, allowing flexibility in design. The UC3843AN facilitates efficient power conversion by regulating the duty cycle of the output waveform based on feedback from the output voltage. With its wide input voltage range and robust design, it finds applications in various power supply designs, including AC/DC converters, DC/DC converters, and battery chargers. The 'AN' suffix denotes the package type, typically a DIP (Dual Inline Package), making it suitable for through-hole mounting on PCBs

Caratteristiche principali

Current-mode PWM controller

Adjustable output voltage and frequency

Voltage feedback loop for stable operation

Soft start function for controlled start-up

Overcurrent protection

Under-voltage lockout

Low start-up current

High switching frequency for efficient power conversion

Applicazione

UC3843AN for reliable power
Optimal performance in all applications
Trustworthy switching regulator

Specifiche

Topology	Boost, Buck, Flyback, Forward	Control mode	Current
Duty cycle (max) (%)	100	Switching frequency (max) (kHz)	500
Features	Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology	UVLO thresholds on/off (V)	8.4/7.6
Operating temperature range (°C)	0 to 70	Rating	Catalog
Gate drive (typ) (A)	1	Vin (max) (V)	28

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