Datasheet Texas Instruments LM1770UMF/NOPB — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | LM1770 |
| Numero de parte | LM1770UMF/NOPB |
Controlador de inversión sincrónico SOT23 de bajo voltaje sin compensación externa 5-SOT-23 -40 a 125
Hojas de datos
LM1770 Low-V SOT23 Synch Buck Cntrr w/No Ext Compensation datasheet
PDF, 862 Kb, Revisión: C, Archivo publicado: abr 3, 2013
Extracto del documento
Precios
Estado
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | Sí |
Embalaje
| Pin | 5 |
| Package Type | DBV |
| Industry STD Term | SOT-23 |
| JEDEC Code | R-PDSO-G |
| Package QTY | 1000 |
| Carrier | LARGE T&R |
| Device Marking | SKLB |
| Width (mm) | 1.6 |
| Length (mm) | 2.9 |
| Thickness (mm) | 1.2 |
| Pitch (mm) | .95 |
| Max Height (mm) | 1.45 |
| Mechanical Data | Descargar |
Paramétricos
| Control Mode | Constant on-time (COT) |
| Duty Cycle(Max) | 98 % |
| Iout(Max) | 4 A |
| Iq(Typ) | 0.4 mA |
| Number of Phases | 1 |
| Operating Temperature Range | -40 to 125 C |
| Package Group | SOT-23 |
| Rating | Catalog |
| Regulated Outputs | 1 |
| Special Features | Light Load Efficiency |
| Switching Frequency(Max) | 2000 kHz |
| Switching Frequency(Min) | 500 kHz |
| Type | Controller |
| Vin(Max) | 5.5 V |
| Vin(Min) | 2.8 V |
| Vout(Max) | 4.5 V |
| Vout(Min) | 0.8 V |
Plan ecológico
| RoHS | Obediente |
Kits de diseño y Módulos de evaluación
- Evaluation Modules & Boards: LM1770EVAL
Low-Voltage SOT23 Synchronous Buck Controller With No External Compensation
Estado del ciclo de vida: Activo (Recomendado para nuevos diseños)
Notas de aplicación
- AN-1414 LM1770 Design Reference (Rev. A)PDF, 226 Kb, Revisión: A, Archivo publicado: abr 23, 2013
This application report presents several reference designs that can be used to implement the TexasInstruments LM1770 Synchronous Buck Controller in a wide variety of configurations. - Advanced Topics in Powering FPGAsPDF, 645 Kb, Archivo publicado: marzo 22, 2007
- Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A)PDF, 178 Kb, Revisión: A, Archivo publicado: abr 23, 2013
Of all the voltage regulator control strategies ever devised, the hysteretic regulator is probably about thesimplest. This control methodology simply turns a switch on when the output voltage is below a referenceand turns the switch off when the output rises to a slightly higher reference. The output ripple is thereforea direct function of the difference between the upper and lower reference
Linea modelo
Serie: LM1770 (5)
- LM1770SMF/NOPB LM1770TMF/NOPB LM1770TMFX/NOPB LM1770UMF/NOPB LM1770UMFX/NOPB
Clasificación del fabricante
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Down (Buck) > Buck Controller (External Switch)