Datasheet Texas Instruments UC2846DWTR/81265 — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | UC2846 |
| Numero de parte | UC2846DWTR/81265 |
Controlador PWM en modo actual 16-SOIC
Hojas de datos
UCx846/7 Current Mode PWM Controller datasheet
PDF, 1.6 Mb, Revisión: C, Archivo publicado: enero 4, 2016
Extracto del documento
Precios
Estado
| Estado del ciclo de vida | Obsoleto (El fabricante ha interrumpido la producción del dispositivo) |
| Disponibilidad de muestra del fabricante | No |
Embalaje
| Pin | 16 |
| Package Type | DW |
| Industry STD Term | SOIC |
| JEDEC Code | R-PDSO-G |
| Width (mm) | 7.5 |
| Length (mm) | 10.3 |
| Thickness (mm) | 2.35 |
| Pitch (mm) | 1.27 |
| Max Height (mm) | 2.65 |
| Mechanical Data | Descargar |
Paramétricos
| Approx. Price (US$) | 1.39 | 1ku |
| Control Method | Current |
| Duty Cycle(Max)(%) | 50 |
| Frequency(Max)(kHz) | 500 |
| Gate Drive(Typ)(A) | 0.5 |
| Operating Temperature Range(C) | -40 to 85 |
| Package Group | SOIC |
| Rating | Catalog |
| Special Features | Error Amplifier Multi-topology Soft Start Synchronization Pin |
| Topology | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull |
| UVLO Thresholds On/Off(V) | 7.7/6.95 |
| Vin(Max)(V) | 40 |
| Vin(Min)(V) | 7.7 |
Plan ecológico
| RoHS | Desobediente |
| Pb gratis | No |
Notas de aplicación
- Modeling Analysis and Compensation of the Current-Mode ConverterPDF, 189 Kb, Archivo publicado: sept 5, 1999
As current-mode conversion increases in popularity several peculiarities associated with fixed-frequency peak-current detecting schemes have surfaced. These include instability above 50% duty cycle a tendency towards subharmonic oscillation non-ideal loop response and an increased sensitivity to noise. This application note attempts to show that the performance of any current-mode converter c - DN-45 UC3846 UC3856 and UCC3806 Push Pull PWM Current Mode Control ICsPDF, 27 Kb, Archivo publicado: sept 5, 1999
The UC3856 is a pin-for-pin-compatible high-performance bipolar version of the industry standard UC3846. It can replace the UC3846 with few circuit modifications and it features increased speed higher gate-drive current and reduced propagation delays. The UCC3806 is a BiCMOS pin-for-pin compatible ultra-low-power version ideal for battery low-power and high-speed applications. The UCC3806 - U-93 A New Integrated Circuit for Current Mode ControlPDF, 411 Kb, Archivo publicado: sept 5, 1999
Advantages of current-mode control over conventional PWM approaches to switching power converters include automatic feed-forward automatic symmetry correction inherent current-limiting simple loop-compensation enhanced load-response and the capability for parallel operation. This application note introduces the first control integrated circuit specifically designed for this topology defines - DN-62 Switching Power Supply Topology Voltage Mode vs. Current ModePDF, 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.
Linea modelo
Serie: UC2846 (9)
- UC2846DW UC2846DWG4 UC2846DWTR UC2846DWTR/81265 UC2846DWTR/81265G4 UC2846DWTRG4 UC2846N UC2846NG4 UC2846QTR
Clasificación del fabricante
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller