Datasheet Texas Instruments LM2745 — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | LM2745 |
1-14V, controlador Buck síncrono en modo de voltaje con arranque previo al sesgo y sincronización de reloj opcional
Hojas de datos
LM2745/48 Synch Buck Controller w/ Pre-Bias Startup & Optional Clk Synch datasheet
PDF, 1.3 Mb, Revisión: E, Archivo publicado: abr 3, 2013
Extracto del documento
Precios
Estado
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | Sí | No |
Embalaje
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| N | 1 | 2 |
| Pin | 14 | 14 |
| Package Type | PW | PW |
| Industry STD Term | TSSOP | TSSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 94 | 2500 |
| Carrier | TUBE | LARGE T&R |
| Device Marking | MTC | 2745 |
| Width (mm) | 4.4 | 4.4 |
| Length (mm) | 5 | 5 |
| Thickness (mm) | 1 | 1 |
| Pitch (mm) | .65 | .65 |
| Max Height (mm) | 1.2 | 1.2 |
| Mechanical Data | Descargar | Descargar |
Paramétricos
| Parameters / Models | LM2745MTC/NOPB | LM2745MTCX/NOPB |
|---|---|---|
| Control Mode | Voltage Mode | Voltage Mode |
| Duty Cycle(Max), % | 86 | 86 |
| Iout(Max), A | 20 | 20 |
| Iq(Typ), mA | 1.7 | 1.7 |
| Number of Phases | 1 | 1 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 |
| Package Group | TSSOP | TSSOP |
| Rating | Catalog | Catalog |
| Regulated Outputs | 1 | 1 |
| Special Features | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification,Tracking | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification,Tracking |
| Switching Frequency(Max), kHz | 1000 | 1000 |
| Switching Frequency(Min), kHz | 250 | 250 |
| Type | Controller | Controller |
| Vin(Max), V | 14 | 14 |
| Vin(Min), V | 1 | 1 |
| Vout(Max), V | 12 | 12 |
| Vout(Min), V | 0.6 | 0.6 |
Plan ecológico
| LM2745MTC/NOPB | LM2745MTCX/NOPB | |
|---|---|---|
| RoHS | Obediente | Obediente |
Notas de aplicación
- Analyzing Power ModulesPDF, 503 Kb, Archivo publicado: marzo 22, 2007
- AN-1603 LM274X Reference Designs (Rev. C)PDF, 222 Kb, Revisión: C, Archivo publicado: mayo 1, 2013
This application note presents several reference designs that implement the LM274X synchronous buckcontroller. The designs address various applications in a wide variety of configurations. The designreference will give an engineer a head start on their project, with designs encompassing sequencing,tracking, synchronizing multiple power supplies, DDR termination, buck-boost, low PCB real esta - Current Limit Foldback Improves Short Circuit Protection in LM274X Family (Rev. B)PDF, 89 Kb, Revisión: B, Archivo publicado: abr 23, 2013
This application report discusses the function of the low side current limit used in the LM274X, andpresents a simple method to enhance the short-circuit protection. the current limit is required to protect thepower components from thermal stress, which can reduce life span. Typically, high side current limitdesigns require an internal rising edge blanking time or external filter to avoid no - Optmiz Pwr Cntrlr Dsigns thru Utiliz Freq & Sync, Ext Ref, Trking & Precis ENPDF, 359 Kb, Archivo publicado: abr 24, 2008
- Reduce buck-converter EMI and voltage stress by minimizing inductive parasiticsPDF, 926 Kb, Archivo publicado: jul 21, 2016
Linea modelo
Serie: LM2745 (2)
Clasificación del fabricante
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Controller (External Switch)