UC2843BD1 - ST Microelectronics

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

Part No

UC2843BD1
Manufacturer

ST Microelectronics
ChipWorker Part#

CW6737526
Category

Power Management IC
Package

SOIC-8
Description

STMICROELECTRONICS UC2843BD1 Current Mode PWM, 30V supply, 500kHz, 5V/1A out, SOIC-8
Documentation

Datasheet

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UC2843BD1 Specifications

Attribute	Attribute Value

Part Number	UC2843BD1
Manufacturer	ST Microelectronics
ChipWorker Part#	CW6737526
Category	Power Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Frequency	500 kHz
Number of Outputs	1 Output
Input Voltage (DC)	30.0 V
Output Voltage	5 V
Output Current	1 A
Supply Current	17 mA
Number of Positions	8 Position
Power Dissipation	1.25 W
Rise Time	50 ns
Switching Frequency	500 kHz
Duty Cycle	100 %
Maximum Duty Cycle	100 %
Fall Time	50 ns
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1250 mW
Supply Voltage	10V ~ 30V
Supply Voltage (Max)	30 V
Input Voltage	15 V
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Size-Length	5 mm
Size-Width	4 mm
Size-Height	1.65 mm
Operating Temperature	-25℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

Product Description

The UC2843BD1 is a high performance current mode PWM Controller IC. It is provides the necessary features to implement off-line or DC-to-DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise duty cycle control under-voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-channel MOSFETs is low in the off-state.
Trimmed oscillator for precise frequency control
Automatic feed forward compensation
Latching PWM for cycle-by-cycle current limiting
Internally trimmed reference with under-voltage lockout
High current totem pole output
Under-voltage lockout with hysteresis
Low start-up and operating current

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