UC3843AD8 - TI

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

Part No

UC3843AD8
Manufacturer

TI
ChipWorker Part#

CW5694303
Category

Voltage Regulator
Package

SOIC-8
Description

Driver; PWM controller; 1A; 1W; Channels:1; 8.4÷30V; 500kHz; SO8
Documentation

Datasheet

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UC3843AD8 Specifications

Attribute	Attribute Value

Part Number	UC3843AD8
Manufacturer	TI
ChipWorker Part#	CW5694303
Category	Voltage Regulator
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-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)	25.0 V
Output Voltage	5 V
Output Current	1 A
Number of Channels	1 Channel
Number of Positions	8 Position
Input Current	11 mA
Power Dissipation	1 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 %
Output Current (Max)	1 A
Maximum Duty Cycle	100 %
Fall Time	50 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	7.6.30 VDC
Supply Voltage (Max)	25 V
Supply Voltage (Min)	12 V
Input Voltage	25 V
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Size-Length	4.9 mm
Size-Width	3.91 mm
Size-Height	1.58 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

Product Description

The UC3843AD8 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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- Carefully tested and packaged by ChipWorker
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