UC1842J - TI

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

Part No

UC1842J
Manufacturer

TI
ChipWorker Part#

CW19848254
Category

PWM Controller IC
Package

CDIP
Description

Current Mode PWM Controller 200mA 500kHz 8Pin CDIP Tube
Documentation

Datasheet

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UC1842J Specifications

Attribute	Attribute Value

Part Number	UC1842J
Manufacturer	TI
ChipWorker Part#	CW19848254
Category	PWM Controller IC
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	8 Pin
Case/Package	CDIP
Output Current	1000 mA
Supply Current	25 mA
Power Dissipation	1 W
Number of Regulated Outputs	1 Output
Rise Time	50 ns
Switching Frequency	500 kHz
Topology	Boost, Flyback, Forward
Duty Cycle	100 %
Maximum Duty Cycle	100 %
Fall Time	50 ns
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-55 ℃
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Operating Temperature	-55℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	Non-Compliant
Lead-Free Status	Contains Lead
ECCN Code	EAR99

Product Description

DESCRIPTION
The UC1842/3/4/5 family of control ICs 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 under-voltage lockout featuring start up current less than 1mA, 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.
FEATURES
• Optimized For Off-line And DC To DC Converters
• Low Start Up Current (<1mA)
• 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
• 500khz Operation
• Low ROError Amp

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