UC3842ADW

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Texas Instruments

30-V, 1A, 500KHZ CURRENT MODE PWM CONTROLLER WITH 16V/10V UVLO 100% DUTY CYCLE, 0°C TO 70°C

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DocumentsUCx84xA Current-Mode PWM Controller datasheet (Rev. H)Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)+11

UC3842ADW

Active

Texas Instruments

30-V, 1A, 500KHZ CURRENT MODE PWM CONTROLLER WITH 16V/10V UVLO 100% DUTY CYCLE, 0°C TO 70°C

Deep-Dive with AI

DocumentsUCx84xA Current-Mode PWM Controller datasheet (Rev. H)Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)+11

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UC3842ADW

Applications	PWM Controller
Current - Supply	11 mA
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	16-SOIC
Package / Case [x]	0.295 in
Package / Case [y]	7.5 mm
Supplier Device Package	16-SOIC
Voltage - Input [Max]	6.3 V
Voltage - Input [Min]	-3 V
Voltage - Supply [Max]	30 VDC
Voltage - Supply [Min]	10 VDC

UC3842A Series

30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 100% duty cycle, 0°C to 70°C

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Current - Supply	Voltage - Input [Min]	Voltage - Input [Max]	Package / Case	Package / Case [y]	Package / Case [x]	Supplier Device Package	Applications	Operating Temperature [Max]	Topology	Control Features	Output Type	Output Configuration	Number of Outputs	Output Phases	Duty Cycle (Max) [Max]	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Function	Package / Case	Package / Case
Texas Instruments UC3842AD8	30 VDC	10 VDC	Surface Mount	11 mA	-3 V	6.3 V	8-SOIC	3.9 mm	0.154 in	8-SOIC	PWM Controller	70 °C
Texas Instruments UC3842AD	30 VDC	10 VDC	Surface Mount	11 mA	-3 V	6.3 V	14-SOIC	3.9 mm	0.154 in		PWM Controller	70 °C
Texas Instruments UC3842AD8TRG4	30 VDC	10 VDC	Surface Mount	11 mA	-3 V	6.3 V	8-SOIC	3.9 mm	0.154 in	8-SOIC	PWM Controller	70 °C
Texas Instruments UC3842ADTR	30 VDC	10 VDC	Surface Mount	11 mA	-3 V	6.3 V	14-SOIC	3.9 mm	0.154 in		PWM Controller	70 °C
Texas Instruments UC3842DG4			Surface Mount				14-SOIC	3.9 mm	0.154 in			70 °C	Boost Buck Buck-Boost Flyback Forward	Frequency Control	Transistor Driver	Isolation Capable Positive	1	1	97 %	30 V	10 V	Step-Down Step-Up Step-Up/Step-Down
Texas Instruments UC3842D8	28 V	12 V	Surface Mount	11 mA	-3 V	6.3 V	8-SOIC	3.9 mm	0.154 in	8-SOIC	PWM Controller	70 °C
Texas Instruments UC3842ADW	30 VDC	10 VDC	Surface Mount	11 mA	-3 V	6.3 V	16-SOIC	7.5 mm	0.295 in	16-SOIC	PWM Controller	70 °C
Texas Instruments UC3842AD8TR	30 VDC	10 VDC	Surface Mount	11 mA	-3 V	6.3 V	8-SOIC	3.9 mm	0.154 in	8-SOIC	PWM Controller	70 °C
Texas Instruments UC3842ANG4	30 VDC	10 VDC	Through Hole	11 mA	-3 V	6.3 V	8-DIP			8-PDIP	PWM Controller	70 °C											0.3 in	7.62 mm
Texas Instruments UC3842AN	30 VDC	10 VDC	Through Hole	11 mA	-3 V	6.3 V	8-DIP			8-PDIP	PWM Controller	70 °C											0.3 in	7.62 mm

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	$ 1.42
		10	$ 1.27
		40	$ 1.21
		120	$ 0.99
		280	$ 0.93
		520	$ 0.82
TME	N/A	1	$ 1.23
		10	$ 0.89
		40	$ 0.80
Texas Instruments	TUBE	1	$ 1.05
		100	$ 0.81
		250	$ 0.60
		1000	$ 0.43

Description

General part information

UC3842A 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.