UC2843D

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Texas Instruments

30-V, 1-A, 500KHZ CURRENT MODE PWM CONTROLLER WITH 8.4V/7.6V UVLO 100% DUTY CYCLE, -40C TO 85C

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Search across all available documentation for this part.

DocumentsConditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A)DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty +12

UC2843D

Active

Texas Instruments

30-V, 1-A, 500KHZ CURRENT MODE PWM CONTROLLER WITH 8.4V/7.6V UVLO 100% DUTY CYCLE, -40C TO 85C

Deep-Dive with AI

DocumentsConditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A)DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty +12

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UC2843D

Applications	PWM Controller
Current - Supply	11 mA
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	14-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Voltage - Input [Max]	6.3 V
Voltage - Input [Min]	-3 V
Voltage - Supply [Max]	28 V
Voltage - Supply [Min]	12 V

UC2843A-Q1 Series

30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 40°C to 85°C

Part	Current - Supply	Voltage - Input [Min]	Voltage - Input [Max]	Grade	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Qualification	Voltage - Supply [Max]	Voltage - Supply [Min]	Applications	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments UC2843AD8TR	11 mA	-3 V	6.3 V	Automotive	8-SOIC	3.9 mm	0.154 in	Surface Mount	AEC-Q100	30 VDC	7.6 V	PWM Controller	8-SOIC	85 °C	-40 °C
Texas Instruments UC2843D	11 mA	-3 V	6.3 V		14-SOIC	3.9 mm	0.154 in	Surface Mount		28 V	12 V	PWM Controller		85 °C	-40 °C
Texas Instruments UC2843D8TR	11 mA	-3 V	6.3 V		8-SOIC	3.9 mm	0.154 in	Surface Mount		28 V	12 V	PWM Controller	8-SOIC	85 °C	-40 °C
Texas Instruments UC2843AQD8R	11 mA	-3 V	6.3 V		8-SOIC	3.9 mm	0.154 in	Surface Mount		30 VDC	7.9 V	PWM Controller	8-SOIC	125 °C	-40 °C
Texas Instruments UC2843AQD8RQ1	11 mA	-3 V	6.3 V		8-SOIC	3.9 mm	0.154 in	Surface Mount		30 VDC	7.9 V	PWM Controller	8-SOIC	125 °C	-40 °C
Texas Instruments UC2843AD8TRG4	11 mA	-3 V	6.3 V	Automotive	8-SOIC	3.9 mm	0.154 in	Surface Mount	AEC-Q100	30 VDC	7.6 V	PWM Controller	8-SOIC	85 °C	-40 °C
Texas Instruments UC2843D8G4	11 mA	-3 V	6.3 V		8-SOIC	3.9 mm	0.154 in	Surface Mount		28 V	12 V	PWM Controller	8-SOIC	85 °C	-40 °C
Texas Instruments UC2843D8TRG4	11 mA	-3 V	6.3 V		8-SOIC	3.9 mm	0.154 in	Surface Mount		28 V	12 V	PWM Controller	8-SOIC	85 °C	-40 °C
Texas Instruments UC2843AQ	11 mA	-3 V	6.3 V		20-LCC (J-Lead)			Surface Mount		30 VDC	7.9 V	PWM Controller	20-PLCC (9x9)	125 °C	-40 °C
Texas Instruments UC2843AD8	11 mA	-3 V	6.3 V	Automotive	8-SOIC	3.9 mm	0.154 in	Surface Mount	AEC-Q100	30 VDC	7.6 V	PWM Controller	8-SOIC	85 °C	-40 °C

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.49
		10	$ 1.34
		50	$ 1.26
		100	$ 1.08
		250	$ 1.01
		500	$ 0.88
		1000	$ 0.73
		2500	$ 0.68
		5000	$ 0.66
Texas Instruments	TUBE	1	$ 1.36
		100	$ 1.04
		250	$ 0.77
		1000	$ 0.55

Description

General part information

UC2843A-Q1 Series

The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is designed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.

The difference between members of this family are shown in the table below.