Datasheet Texas Instruments LM3508
| Manufacturer | Texas Instruments |
| Series | LM3508 |
Synchronous Magnetic Constant Current White LED Driver
Datasheets
LM3508 Synchronous Magnetic Constant Current White LED Driver datasheet
PDF, 2.7 Mb, Revision: C, File published: May 3, 2013
Extract from the document
Prices
Status
| LM3508TL/NOPB | LM3508TLX/NOPB | |
|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No | Yes |
Packaging
| LM3508TL/NOPB | LM3508TLX/NOPB | |
|---|---|---|
| N | 1 | 2 |
| Pin | 9 | 9 |
| Package Type | YZR | YZR |
| Industry STD Term | DSBGA | DSBGA |
| JEDEC Code | R-XBGA-N | R-XBGA-N |
| Package QTY | 250 | 3000 |
| Carrier | SMALL T&R | LARGE T&R |
| Device Marking | 31 | D |
| Width (mm) | 1.8 | 1.8 |
| Length (mm) | 2 | 2 |
| Thickness (mm) | .675 | .675 |
| Pitch (mm) | .5 | .5 |
| Max Height (mm) | .675 | .675 |
| Mechanical Data | Download | Download |
Parametrics
| Parameters / Models | LM3508TL/NOPB | LM3508TLX/NOPB |
|---|---|---|
| Number of Channels | 1 | 1 |
| Duty Cycle(Max), % | 91 | 91 |
| LED | 4 | 4 |
| LED Current Per Channel, mA | 30 | 30 |
| Operating Temperature Range, C | -30 to 85 | -30 to 85 |
| Package Group | DSBGA | DSBGA |
| Package Size: mm2:W x L, PKG | See datasheet (DSBGA) | See datasheet (DSBGA) |
| Peak Efficiency, % | 85 | 85 |
| Rating | Catalog | Catalog |
| Shutdown Current(Typ), uA | 0.01 | 0.01 |
| Special Features | OVP | OVP |
| Switching Frequency(Max), kHz | 850 | 850 |
| Topology | Boost | Boost |
| Type | Inductive | Inductive |
| Vin(Max), V | 5.5 | 5.5 |
| Vin(Min), V | 2.7 | 2.7 |
| Vout(Max), V | 17.5 | 17.5 |
| Vout(Min), V | 10 | 10 |
Eco Plan
| LM3508TL/NOPB | LM3508TLX/NOPB | |
|---|---|---|
| RoHS | Compliant | Compliant |
Application Notes
- Analog PWM Dimming in White-LED DriversPDF, 539 Kb, File published: Dec 21, 2016
Pulse-width modulation (PWM) is a common type of dimming used to adjust the current in white-LEDdriver devices. PWM dimming takes a rectangle waveform with variable positive duty cycle (D) and adjuststhe LED current proportionally. For many smaller format white LED drivers (7-inch screen size or smaller),the PWM signal is converted to a DC control voltage and made to drive the LED current in
Model Line
Series: LM3508 (2)
Manufacturer's Classification
- Semiconductors> Power Management> LED Driver> Backlight
