UC3844AD8 - TI

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

Part No

UC3844AD8
Manufacturer

TI
ChipWorker Part#

CW17657050
Category

PWM Controller IC
Package

SOIC-8
Description

TEXAS INSTRUMENTS UC3844AD8 Current Mode PWM, 25V-12V supply, 500kHz, 5V/200mA out, SOIC-8
Documentation

Datasheet

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UC3844AD8 Specifications

Attribute	Attribute Value

Part Number	UC3844AD8
Manufacturer	TI
ChipWorker Part#	CW17657050
Category	PWM Controller IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Frequency	500 kHz
Supply Voltage (DC)	12.0V (min)
Number of Outputs	1 Output
Input Voltage (DC)	15.0V ~ 5.0V
Output Voltage	5 V
Output Current	1 A
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	450 kHz
Topology	Buck, Boost, Flyback, Forward
Duty Cycle	48 %
Output Current (Max)	1 A
Maximum Duty Cycle	50 %
Fall Time	50 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Power Dissipation (Max)	1000 mW
Supply Voltage	10V ~ 30V
Supply Voltage (Max)	25 V
Supply Voltage (Min)	12 V
Input Voltage	15 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
ECCN Code	EAR99

Product Description

The UC3844AD8 is a current-mode Pulse Width Modulation (PWM) Controller providing the necessary features to control current-mode switched mode power supplies. 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
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 amplifier
Green product and no Sb/Br

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