Datasheet Texas Instruments UC1843AL883B — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | UC1843A |
| Numero de parte | UC1843AL883B |
Controlador PWM en modo actual 20-LCCC -55 a 125
Hojas de datos
UCx84xA Current-Mode PWM Controller datasheet
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 | 20 | 20 | 20 | 20 |
| Package Type | FK | FK | FK | FK |
| Industry STD Term | LCCC | LCCC | LCCC | LCCC |
| JEDEC Code | S-CQCC-N | S-CQCC-N | S-CQCC-N | S-CQCC-N |
| Package QTY | 1 | 1 | 1 | 1 |
| Carrier | TUBE | TUBE | TUBE | TUBE |
| Device Marking | UC1843AL/ | 5962- | 8670406XA | 883B |
| Width (mm) | 8.89 | 8.89 | 8.89 | 8.89 |
| Length (mm) | 8.89 | 8.89 | 8.89 | 8.89 |
| Thickness (mm) | 1.83 | 1.83 | 1.83 | 1.83 |
| Pitch (mm) | 1.27 | 1.27 | 1.27 | 1.27 |
| Max Height (mm) | 2.03 | 2.03 | 2.03 | 2.03 |
| Mechanical Data | Descargar | Descargar | Descargar | Descargar |
Paramétricos
| Control Method | Current |
| Duty Cycle(Max) | 100 % |
| Frequency(Max) | 500 kHz |
| Operating Temperature Range | -55 to 125 C |
| Package Group | LCCC |
| Package Size: mm2:W x L | 20LCCC: 79 mm2: 8.89 x 8.89(LCCC) PKG |
| Rating | Military |
| Special Features | Error Amplifier,Multi-topology |
| Topology | Boost,Flyback,Forward |
| UVLO Thresholds On/Off | 8.4/7.6 V |
| Vin(Max) | 30 V |
| Vin(Min) | 7.6 V |
Plan ecológico
| RoHS | See ti.com |
Notas de aplicación
- DN-30 Programmable Electronic Circuit BreakerPDF, 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. - DN-29 UC3842A Family - Frequency Foldback Technique Provides ProtectionPDF, 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 - DN-26 UC3842A Low-Cost Start-up and Fault Protection CircuitPDF, 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 - DN-27 UC1842/UC1842A Family - Summary of Functional DifferencesPDF, 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 - DN-40 The Effects of Oscillator Discharge Current Variations on Maximum DutyPDF, 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.
Linea modelo
Serie: UC1843A (5)
- 5962-8670406PA 5962-8670406XA UC1843AJ UC1843AJ883B UC1843AL883B
Clasificación del fabricante
- Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter