Datasheet Texas Instruments UC1844AL883B — Datenblatt

HerstellerTexas Instruments
SerieUC1844A
ArtikelnummerUC1844AL883B
Datasheet Texas Instruments UC1844AL883B

Aktueller Modus PWM-Controller 20-LCCC -55 bis 125

Datenblätter

UCx84xA Current-Mode PWM Controller datasheet
PDF, 3.2 Mb, Revision: F, Datei veröffentlicht: Jan 6, 2017
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Preise

Status

Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityNo

Verpackung

Pin20202020
Package TypeFKFKFKFK
Industry STD TermLCCCLCCCLCCCLCCC
JEDEC CodeS-CQCC-NS-CQCC-NS-CQCC-NS-CQCC-N
Package QTY1111
CarrierTUBETUBETUBETUBE
Device Marking5962-UC1844AL/883B8670407XA
Width (mm)8.898.898.898.89
Length (mm)8.898.898.898.89
Thickness (mm)1.831.831.831.83
Pitch (mm)1.271.271.271.27
Max Height (mm)2.032.032.032.03
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Parameter

Control MethodCurrent
Duty Cycle(Max)50 %
Frequency(Max)500 kHz
Operating Temperature Range-55 to 125 C
Package GroupLCCC
Package Size: mm2:W x L20LCCC: 79 mm2: 8.89 x 8.89(LCCC) PKG
RatingMilitary
Special FeaturesError Amplifier,Multi-topology
TopologyBoost,Flyback,Forward
UVLO Thresholds On/Off16/10 V
Vin(Max)30 V
Vin(Min)10 V

Öko-Plan

RoHSSee ti.com

Anwendungshinweise

  • DN-30 Programmable Electronic Circuit Breaker
    PDF, 164 Kb, Datei veröffentlicht: Sep 5, 1999
    This design note describes a programmable electronic circuit breaker that uses the UC3843A control IC to facilitate a high-speed turnoff following an overcurrent condition. This low-cost industry-standard IC contains the required protection features and drive capability in a single 8-pin device.
  • DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection
    PDF, 51 Kb, Datei veröffentlicht: Sep 5, 1999
    Excessive power dissipation can occur in switch-mode power supplies during startup and overload conditions. Many sophisticated PWM controllers provide the means for protection against these problems; however simple low-cost controllers require additional circuitry. This design note describes a circuit that uses only one additional resistor and transistor to enhance the performance of the UC3842A
  • DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit
    PDF, 155 Kb, Datei veröffentlicht: Sep 5, 1999
    The UC1842/3/4/5 family of control ICs can implement off-line or DC-to-DC fixed-frequency current-mode control schemes with a minimal external parts count. This design note describes a circuit with low startup current (less than 0.5mA) MOSFET-compatible undervoltage lockout thresholds programmable restart-delay HICCUP fault protection auxiliary 5V precision reference and overvoltage/overtemper
  • DN-27 UC1842/UC1842A Family - Summary of Functional Differences
    PDF, 21 Kb, Datei veröffentlicht: Sep 5, 1999
    The UC1842A/3A/4A/5A family of control ICs is a pin-for-pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current-mode switched-mode power supplies this device has been improved for higher frequency off-line power supplies. This new A series of controllers UC1842A/43A/44A/45A is superior to its predecessors in startup current requirements
  • DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty
    PDF, 39 Kb, Datei veröffentlicht: Sep 5, 1999
    This design note details programming frequency and maximum duty cycle using the UC3842 and UC3842-A PWM oscillator ICs. Simplified equations are used to develop obtainable ranges for parameters over IC tolerances.
  • DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802
    PDF, 42 Kb, Datei veröffentlicht: Sep 5, 1999
    The UCC3802 offers numerous advantages that allow the power supply design engineer to meet requirements for lower power for battery-operated equipment higher switching frequencies for reduced magnetics size higher levels of circuit integration for improved reliability and lower cost. The UCC3802 family of devices is pin-out compatible with the UC3842 and UC3842A families; however it is not plu

Modellreihe

Serie: UC1844A (5)

Herstellerklassifikation

  • Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter