UC3843AN ,Voltage Regulator - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

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221 points

Part No

UC3843AN
Manufacturer

TI
ChipWorker Part#

CW504404
Category

Voltage Regulator
Package

DIP-8
Description

Driver; PWM controller; 1A; 1W; Channels:1; 8.4÷30V; 500kHz; DIP8
Documentation

Datasheet
Ships from

Moscow
Наличие

In Stock
Estimated Price

$ 0.85

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UC3843AN Specifications

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Attribute	Attribute Value

Part Number	UC3843AN
Manufacturer	TI
ChipWorker Part#	CW504404
Category	Voltage Regulator
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	8 Pin
Case/Package	DIP-8
Frequency	500 kHz
Supply Voltage (DC)	12.0V (min)
Operating Voltage	8.4V ~ 30V
Power Rating	1 W
Number of Outputs	1 Output
Input Voltage (DC)	25.0V ~ 5.0V
Output Voltage	15 V
Output Current	1 A
Supply Current	11.0 mA
Number of Channels	1 Channel
Number of Positions	8 Position
Input Current	11.0 mA
Power Dissipation	1.00 W
Quiescent Current	11.0 mA
Number of Regulated Outputs	1 Output
Rise Time	50 ns
Switching Frequency	500 kHz
Topology	Buck, Boost, Flyback, Forward
Duty Cycle	100 %
Maximum Duty Cycle	100 %
Fall Time	50 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Power Dissipation (Max)	1000 mW
Supply Voltage	30 V
Supply Voltage (Max)	25 V
Supply Voltage (Min)	12 V
Input Voltage	25 V
	expand all
Size-Length	9.81 mm
Size-Width	6.35 mm
Size-Height	4.57 mm
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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Product Description

The UC3843AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed 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.
Optimized for off-line and DC to DC converters
Low start up current (<0.5mA)
Trimmed oscillator discharge current
Automatic feed forward compensation
Pulse-by-pulse current limiting
Enhanced load response characteristics
Under-voltage lockout with hysteresis
Double pulse suppression
High current totem pole output
Internally trimmed bandgap reference
Low RO error amp
Green product and no Sb/Br

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