Datasheet Texas Instruments UC1842AJ883B — Ficha de datos

Fabricante	Texas Instruments
Serie	UC1842A
Numero de parte	UC1842AJ883B

Controlador PWM en modo actual 8-CDIP -55 a 125

Hojas de datos

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PDF, 3.2 Mb, Revisión: F, Archivo publicado: enero 6, 2017

Extracto del documento

Precios

Estado

Estado del ciclo de vida	Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante	No

Embalaje

Pin	8	8
Package Type	JG	JG
Industry STD Term	CDIP	CDIP
JEDEC Code	R-GDIP-T	R-GDIP-T
Package QTY	1	1
Carrier	TUBE	TUBE
Device Marking	UC1842A	8670405PA
Width (mm)	6.67	6.67
Length (mm)	9.6	9.6
Thickness (mm)	4.57	4.57
Pitch (mm)	2.54	2.54
Max Height (mm)	5.08	5.08
Mechanical Data	Descargar	Descargar

Paramétricos

Control Method	Current
Duty Cycle(Max)	100 %
Frequency(Max)	500 kHz
Operating Temperature Range	-55 to 125 C
Package Group	CDIP
Package Size: mm2:W x L	See datasheet (CDIP) PKG
Rating	Military
Special Features	Error Amplifier,Multi-topology
Topology	Boost,Flyback,Forward
UVLO Thresholds On/Off	16/10 V
Vin(Max)	30 V
Vin(Min)	10 V

Plan ecológico

RoHS	See ti.com

Notas de aplicación

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DN-30 Programmable Electronic Circuit Breaker
PDF, 164 Kb, Archivo publicado: sept 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.
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DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection
PDF, 51 Kb, Archivo publicado: sept 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
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DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit
PDF, 155 Kb, Archivo publicado: sept 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
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DN-27 UC1842/UC1842A Family - Summary of Functional Differences
PDF, 21 Kb, Archivo publicado: sept 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
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DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty
PDF, 39 Kb, Archivo publicado: sept 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.
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DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode
PDF, 66 Kb, Archivo publicado: sept 5, 1999
This design note explains the differences between voltage-mode and current-mode switching power supply topologies. It includes a circuit diagram for each mode and suggests criteria for choosing which mode to use.
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DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802
PDF, 42 Kb, Archivo publicado: sept 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

Linea modelo

Serie: UC1842A (5)

5962-8670405PA 5962-8670405XA UC1842AJ UC1842AJ883B UC1842AL883B

Clasificación del fabricante

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