Datasheet Texas Instruments LM34925 — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | LM34925 |
7.5-100V Wide Vin, regulador de polarización secundario integrado de 100mA para convertidores CC / CC aislados
Hojas de datos
LM34925 Integrated Secondary-Side Bias Regulator for Isolated DC-DC Converters datasheet
PDF, 1.3 Mb, Revisión: F, Archivo publicado: nov 11, 2014
Extracto del documento
Precios
Estado
| LM34925MR/NOPB | LM34925MRX/NOPB | LM34925SD/NOPB | LM34925SDX/NOPB | |
|---|---|---|---|---|
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | Sí | No | Sí | No |
Embalaje
| LM34925MR/NOPB | LM34925MRX/NOPB | LM34925SD/NOPB | LM34925SDX/NOPB | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Pin | 8 | 8 | 8 | 8 |
| Package Type | DDA | DDA | NGU | NGU |
| Industry STD Term | HSOIC | HSOIC | WSON | WSON |
| JEDEC Code | R-PDSO-G | R-PDSO-G | S-PDSO-N | S-PDSO-N |
| Package QTY | 95 | 2500 | 1000 | 4500 |
| Carrier | TUBE | LARGE T&R | SMALL T&R | LARGE T&R |
| Device Marking | S000YB | S000YB | L34925 | L34925 |
| Width (mm) | 3.9 | 3.9 | 4 | 4 |
| Length (mm) | 4.89 | 4.89 | 4 | 4 |
| Thickness (mm) | 1.48 | 1.48 | .8 | .8 |
| Pitch (mm) | 1.27 | 1.27 | .8 | .8 |
| Max Height (mm) | 1.7 | 1.7 | .8 | .8 |
| Mechanical Data | Descargar | Descargar | Descargar | Descargar |
Paramétricos
| Parameters / Models | LM34925MR/NOPB | LM34925MRX/NOPB | LM34925SD/NOPB | LM34925SDX/NOPB |
|---|---|---|---|---|
| Iout, A | 0.1 | 0.1 | 0.1 | 0.1 |
| Package Group | SO PowerPAD | SO PowerPAD | WSON | WSON |
| Package Size: mm2:W x L, PKG | 8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD) | 8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD) | See datasheet (WSON) | See datasheet (WSON) |
| Rating | Catalog | Catalog | Catalog | Catalog |
| Soft Start | None | None | None | None |
| Special Features | Adjustable UVLO,Enable | Adjustable UVLO,Enable | Adjustable UVLO,Enable | Adjustable UVLO,Enable |
| Switching Frequency(Max), kHz | 1000 | 1000 | 1000 | 1000 |
| Switching Frequency(Min), kHz | 150 | 150 | 150 | 150 |
| Topology | Buck,Flybuck | Buck,Flybuck | Buck,Flybuck | Buck,Flybuck |
| Type | Converter (Integrated Switch) | Converter (Integrated Switch) | Converter (Integrated Switch) | Converter (Integrated Switch) |
| Vin(Max), V | 100 | 100 | 100 | 100 |
| Vin(Min), V | 9 | 9 | 9 | 9 |
| Vout(Max), V | 90 | 90 | 90 | 90 |
| Vout(Min), V | 1.25 | 1.25 | 1.25 | 1.25 |
Plan ecológico
| LM34925MR/NOPB | LM34925MRX/NOPB | LM34925SD/NOPB | LM34925SDX/NOPB | |
|---|---|---|---|---|
| RoHS | Obediente | Obediente | Obediente | Obediente |
Notas de aplicación
- LM34925 Isolated Evaluation Board (Rev. A)PDF, 516 Kb, Revisión: A, Archivo publicado: abr 23, 2013
An isolated bias supply is implemented in this evaluation board with LM34925 Constant-On-Timeregulator. The LM34925 regulator integrates both the high and low side power switches essential forcreating isolated buck converter.The following include the board specifications:Input Range: 20V to 100VPrimary Output Voltage: 10VSecondary (Isolated) Output Voltage: - Fly-Buck(TM) converter provides EMC and isolation in PLC applicationsPDF, 201 Kb, Archivo publicado: enero 29, 2015
- AN-2292 Designing an Isolated Buck (Fly-Buck) Converter (Rev. C)PDF, 870 Kb, Revisión: C, Archivo publicado: dic 17, 2014
In many applications, one or more low-cost, simple to use, isolated power supplies working from input voltages up to 100 V are needed. Traditional solutions use flyback converters to generate this bias supply. Flyback designs typically utilize asymmetric transformers turns ratios for primary and secondary power windings, with an optocoupler and reference, or an auxiliary winding for feedback regul
Linea modelo
Serie: LM34925 (4)
Clasificación del fabricante
- Semiconductors> Power Management> Offline and Isolated DC/DC Controllers and Converters> Isolated DC/DC Converter