Texas Instruments UC3841N

Name: UC3841N
Brand: Texas Instruments
SKU: 3752524-UC3841N
Availability: InStock
Rating: 5 (1 reviews)

Part Number:: UC3841N

Manufacturer:: Texas Instruments

Ventron No:: 3752524-UC3841N

Description:: 32V, 1A , 0.5MHz off-line PWM controller , 0C to 70C

ECAD Model:

Datasheet:: uc3841

Overview

Description
The UC1841 family of PWM controllers offers a comprehensive suite of features for power converter applications. These devices integrate all necessary control, driving, monitoring, and protection functions, simplifying design and enhancing performance.

Features
All-inclusive control, driving, monitoring, and protection functions
Low-current, off-line start circuit
Voltage feed forward or current mode control
Guaranteed duty cycle clamp
PWM latch for single pulse per period
Pulse-by-pulse current limiting with over-current fault shutdown
No start-up or shutdown transients
Slow turn-on both initially and after fault shutdown
Shutdown upon over- or under-voltage sensing
Latch off or continuous retry after fault
PWM output switch usable to 1A peak current
1% reference accuracy
500kHz operation

Applications
The UC1841 family is suitable for a wide range of power converter applications, including:
Forward and flyback power converters
Low and high voltage input DC to DC converters

Specifications

Texas Instruments UC3841N technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UC3841N.

Factory Lead Time
6 Weeks
Lifecycle Status
ACTIVE (Last Updated: 6 days ago)
Mounting Type
Through Hole
Package / Case
18-DIP (0.300, 7.62mm)
Surface Mount
NO
Number of Pins
18
Weight
1.206102g
Operating Temperature
0°C~70°C TA
Packaging
Tube
JESD-609 Code
e4
Pbfree Code
yes
Part Status
Active
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Number of Terminations
18
ECCN Code
EAR99
Terminal Finish
Nickel/Palladium/Gold (Ni/Pd/Au)
Additional Feature
CURRENT MODE OPERATION IS ALSO POSSIBLE
Subcategory
Switching Regulator or Controllers
Technology
BICMOS
Terminal Position
DUAL
Terminal Pitch
2.54mm
Frequency
450kHz
Base Part Number
UC3841
Function
Step-Up, Step-Up/Step-Down
Number of Outputs
1
Output Voltage
40V
Output Type
Transistor Driver
Input Voltage-Nom
20V
Analog IC - Other Type
SWITCHING CONTROLLER
Output Configuration
Positive, Isolation Capable
Output Current
400mA
Voltage - Supply (Vcc/Vdd)
8V~32V
Control Features
Current Limit, Enable, Frequency Control, Ramp, Reset, Soft Start
Topology
Boost, Flyback, Forward Converter
Control Mode
CURRENT-MODE
Frequency - Switching
500kHz
Control Technique
PULSE WIDTH MODULATION
Synchronous Rectifier
No
Nominal Input Voltage
30V
Switcher Configuration
BUCK-BOOST
Max Duty Cycle
95 %
Input Current
10mA
Height
5.08mm
Length
22.48mm
Width
6.35mm
Thickness
4.57mm
REACH SVHC
No SVHC
RoHS Status
ROHS3 Compliant
Lead Free
Lead Free