UC3843N Texas Instruments - Yeehing Electronics

Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, 0C to 70C

Pricing (USD)

Quantity	Unit Price
1 — 99	1.018
100 — 249	0.783
250 — 999	0.576
1,000 +	0.29

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Switching Controllers
RoHS	Y
Topology	Boost, Buck, Flyback, Forward
Number of Outputs	1 Output
Switching Frequency	450 kHz
Duty Cycle - Max	100 %
Output Current	1 A
Minimum Operating Temperature	0 C
Maximum Operating Temperature	+ 70 C
Mounting Style	Through Hole
Package / Case	PDIP-8
Packaging	Tube
Operating Temperature Range	0 C to + 70 C
Series	UC3843
Type	Current Mode PWM Controllers
Brand	Texas Instruments
Fall Time	50 ns
Product Type	Switching Controllers
Rise Time	50 ns
Factory Pack Quantity	50
Subcategory	PMIC - Power Management ICs
Unit Weight	0.018646 oz

For more information, please refer to datasheet

Documents

UC3843N Datasheet

More Information

The UCx84x series of control integrated circuits provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of external components. The internally implemented circuits include an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator that also provides current-limit control, and a totem-pole output stage that is designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.