UC3843DR-8

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Texas Instruments

SWITCHING CONTROLLER

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UC3843DR-8

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Texas Instruments

SWITCHING CONTROLLER

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Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UC3843DR-8

Clock Sync	False
Control Features	Frequency Control
Duty Cycle (Max) [Max]	97 %
Function	Step-Up, Step-Up/Step-Down, Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	False
Topology	Flyback, Buck-Boost, Forward, Boost, Buck

UC3843A Series

30-V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0°C to 70°C

Part	Applications	Current - Supply	Package / Case [x]	Package / Case [y]	Package / Case	Operating Temperature [Max]	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Voltage - Input [Min]	Voltage - Input [Max]	Supplier Device Package	Package / Case	Package / Case	Duty Cycle (Max) [Max]	Number of Outputs	Output Configuration	Topology	Output Type	Output Phases	Function	Control Features
Texas Instruments UC3843ADTR	PWM Controller	11 mA	0.154 in	3.9 mm	14-SOIC	70 °C	30 VDC	7.6 V	Surface Mount	-3 V	6.3 V
Texas Instruments UC3843D8	PWM Controller	11 mA	0.154 in	3.9 mm	8-SOIC	70 °C	28 V	12 V	Surface Mount	-3 V	6.3 V	8-SOIC
Texas Instruments UC3843NG4	PWM Controller	11 mA			8-DIP	70 °C	28 V	12 V	Through Hole	-3 V	6.3 V	8-PDIP	0.3 in	7.62 mm
Texas Instruments UC3843AD	PWM Controller	11 mA	0.154 in	3.9 mm	14-SOIC	70 °C	30 VDC	7.6 V	Surface Mount	-3 V	6.3 V
Texas Instruments UC3843D			0.154 in	3.9 mm	14-SOIC	70 °C			Surface Mount
Texas Instruments UC3843DR-8			0.154 in	3.9 mm	8-SOIC	70 °C			Surface Mount			8-SOIC			97 %	1	Isolation Capable Positive	Boost Buck Buck-Boost Flyback Forward	Transistor Driver	1	Step-Down Step-Up Step-Up/Step-Down	Frequency Control
Texas Instruments UC3843ANG4	PWM Controller	11 mA			8-DIP	70 °C	30 VDC	7.6 V	Through Hole	-3 V	6.3 V	8-PDIP	0.3 in	7.62 mm
Texas Instruments UC3843AD8TR	PWM Controller	11 mA	0.154 in	3.9 mm	8-SOIC	70 °C	30 VDC	7.6 V	Surface Mount	-3 V	6.3 V	8-SOIC
Texas Instruments UC3843D8TR	PWM Controller	11 mA	0.154 in	3.9 mm	8-SOIC	70 °C	28 V	12 V	Surface Mount	-3 V	6.3 V	8-SOIC
Texas Instruments UC3843AD8	PWM Controller	11 mA	0.154 in	3.9 mm	8-SOIC	70 °C	30 VDC	7.6 V	Surface Mount	-3 V	6.3 V	8-SOIC

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	485	$ 0.62

Description

General part information

UC3843A Series

The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.

Documents

Technical documentation and resources

No documents available