HomedatasheetUC3843BD1013TR

UC3843BD1013TR Datasheet

PMIC - Voltage Regulators - DC DC Switching Controllers
Share:
Manufacturer

Description

The UC3843BD1013TR 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 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 offstate.Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC3842B and UC3843BD1013TR have UVLO thresholds of 16V (on) and 10V (off), ideally suited off-line applications The corresponding thresholds for the UC3843BD1013TR and UC3845B are 8.5 V and 7.9 V. The UC3842B and UC3843BD1013TR can operate to duty cycles approaching 100%. A range of the zero to < 50 % is obtained by the UC3844B and UC3845B by the addition of an internal toggle flip flop which blanks the output off every other clock cycle. UC3843BD1013TR Features &bull; TRIMMED OSCILLATOR FOR PRECISE FRE-&bull; QUENCY CONTROL OSCILLATOR FREQUENCY GUARANTEED&bull; AT 250kHz .CURRENT MODE OPERATION TO 500kHz AUTOMATIC FEED FORWARD COMPENSA. TION LATCHING PWM FOR CYCLE-BY-CYCLE&bull; CURRENT LIMITING INTERNALLY TRIMMED REFERENCE WITH&bull; UNDERVOLTAGE LOCKOUT .HIGH CURRENT TOTEM POLE OUTPUT UNDERVOLTAGE LOCKOUT WITH HYSTER. ESIS LOW START-UP AND OPERATING CURRENT
Features

Parameters

[{"Name":"Number of Outputs","Value":"1"},{"Name":"Frequency - Max","Value":"500kHz"},{"Name":"Duty Cycle","Value":"100%"},{"Name":"Voltage - Supply","Value":"8.2 V ~ 25 V"},{"Name":"Operating Temperature","Value":"0°C ~ 70°C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

LITTELFUSE

Littelfuse offers innovative circuit protection solutions. Wherever one looks, Littelfuse is there. Streetlights, office buildings, cars, trucks, factories, computers, heating and cooling systems, electronic games, telecommunications equipment, even the satellites in the sky are protected by Littelfuse circuit protection products.

Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
Request for Datasheet

  • Part No     :
  • Your Email:
  • Content     :

related datasheet
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us

+86-755-83536845

One to One Customer Service

17190417227