Datasheet Texas Instruments UC3841NG4 — Ficha de datos

FabricanteTexas Instruments
SerieUC3841
Numero de parteUC3841NG4
Datasheet Texas Instruments UC3841NG4

Programable, fuera de línea, controlador PWM 18-PDIP 0 a 70

Hojas de datos

Programmable, Off-Line, PWM Controller datasheet
PDF, 937 Kb, Archivo publicado: sept 5, 1999
Extracto del documento

Precios

Estado

Estado del ciclo de vidaActivo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante

Embalaje

Pin18
Package TypeN
Industry STD TermPDIP
JEDEC CodeR-PDIP-T
Package QTY20
CarrierTUBE
Device MarkingUC3841N
Width (mm)6.35
Length (mm)22.48
Thickness (mm)4.57
Pitch (mm)2.54
Max Height (mm)5.08
Mechanical DataDescargar

Paramétricos

Control MethodPeak Current Mode
Duty Cycle(Max)100 %
Frequency(Max)500 kHz
Frequency(Min)26 kHz
Gate Drive(Typ)1 A
Operating Temperature Range0 to 70 C
Package GroupPDIP
RatingCatalog
Special FeaturesError Amplifier,Multi-topology,Soft Start,Synchronization Pin
TopologyBoost,Buck,Buck-Boost,Flyback,Forward
UVLO Thresholds On/Off8/7.8 V
Vin(Max)400 V
Vin(Min)8 V

Plan ecológico

RoHSObediente

Notas de aplicación

  • DN-28 UC3840/UC3841/UC3851 PWM Controllers - Summary of Functions & Differences
    PDF, 22 Kb, Archivo publicado: sept 5, 1999
    The UC3840/UC3841 and UC3851 PWM controllers incorporate numerous protection features for switch mode power supplies. The list includes programmable undervoltage lockout thresholds, programmable current-limit thresholds, overvoltage protection, soft-start, and external stop/reset capability. While these controllers are similar in concept, there are subtle differences among them in the operation of
  • Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps
    PDF, 61 Kb, Archivo publicado: marzo 23, 2000
    The switch-mode power supply primary current is often sensed using a power resistor. Using an op amp to amplify the current-sense signal can reduce cost and improve noise performance and efficiency. This report reviews the advantages of using an op amp circuit and analyzes the design criteria needed to choose the proper op amp.

Linea modelo

Serie: UC3841 (3)

Clasificación del fabricante

  • Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller