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Updated at 01/11/2025 10:30:15(UTC+8)

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Description

The UC2846N is a current-mode Pulse Width Modulation (PWM) Controller provides all of the necessary features to implement fixed-frequency, current-mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters and the ability to parallel while maintaining equal current sharing. The protection circuitry includes built-in under-voltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off. Other features include fully-latched operation, double-pulse suppression.
Automatic feed forward compensation
Programmable pulse-by-pulse current limiting
Automatic symmetry correction in push-pull configuration
Enhanced load response characteristics
Parallel operation capability for modular power systems
Differential current sense amplifier with wide common mode range
Double-pulse suppression
500mA (Peak) Totem-pole outputs
±1% Band gap reference
Undervoltage lockout
Soft-start capability
Shutdown terminal
Error amplifier
Green product and no Sb/Br

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UC2846N Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	16 Pin
Case/Package	PDIP-16
Frequency	500 kHz
Supply Voltage (DC)	7.70V (min)
Number of Outputs	2 Output
Input Voltage (DC)	15.0 V
Output Voltage	13.5 V
Output Current	500 mA
Supply Current	21 mA
Number of Positions	16 Position
Power Dissipation	1 W
Number of Regulated Outputs	2 Output
Rise Time	50 ns
Switching Frequency	500 kHz
Topology	Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
Duty Cycle	50 %
Maximum Duty Cycle	50 %
Fall Time	50 ns
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1000 mW
Supply Voltage	7.7V ~ 40V
Supply Voltage (Max)	40 V
Supply Voltage (Min)	7.7 V
Input Voltage	15 V
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Size-Length	19.3 mm
Size-Width	6.35 mm
Size-Height	4.57 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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