Datasheet Texas Instruments LM3509
| Manufacturer | Texas Instruments |
| Series | LM3509 |
High Efficiency Boost for White LED's and/or OLED Displays with Dual Current Sinks
Datasheets
HE Boost for White LED's / OLED Displays w/ Dual Sinks & I2C Brightness Control datasheet
PDF, 2.7 Mb, Revision: D, File published: May 3, 2013
Extract from the document
Prices
Status
| LM3509SD/NOPB | LM3509SDE/NOPB | LM3509SDX/NOPB | |
|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No | Yes | Yes |
Packaging
| LM3509SD/NOPB | LM3509SDE/NOPB | LM3509SDX/NOPB | |
|---|---|---|---|
| N | 1 | 2 | 3 |
| Pin | 10 | 10 | 10 |
| Package Type | DSC | DSC | DSC |
| Industry STD Term | WSON | WSON | WSON |
| JEDEC Code | S-PDSO-N | S-PDSO-N | S-PDSO-N |
| Package QTY | 1000 | 250 | 4500 |
| Carrier | SMALL T&R | SMALL T&R | LARGE T&R |
| Device Marking | L3509 | L3509 | L3509 |
| Width (mm) | 3 | 3 | 3 |
| Length (mm) | 3 | 3 | 3 |
| Thickness (mm) | .75 | .75 | .75 |
| Pitch (mm) | .5 | .5 | .5 |
| Max Height (mm) | .8 | .8 | .8 |
| Mechanical Data | Download | Download | Download |
Parametrics
| Parameters / Models | LM3509SD/NOPB | LM3509SDE/NOPB | LM3509SDX/NOPB |
|---|---|---|---|
| Number of Channels | 2 | 2 | 2 |
| Duty Cycle(Max), % | 90 | 90 | 90 |
| LED | 10 | 10 | 10 |
| LED Current Per Channel, mA | 30 | 30 | 30 |
| Operating Temperature Range, C | -40 to 85 | -40 to 85 | -40 to 85 |
| Package Group | WSON | WSON | WSON |
| Package Size: mm2:W x L, PKG | See datasheet (WSON) | See datasheet (WSON) | See datasheet (WSON) |
| Peak Efficiency, % | 88 | 88 | 88 |
| Rating | Catalog | Catalog | Catalog |
| Shutdown Current(Typ), uA | 3.6 | 3.6 | 3.6 |
| Special Features | I2C Control | I2C Control | I2C Control |
| Switching Frequency(Max), kHz | 1250 | 1250 | 1250 |
| Topology | Boost | Boost | Boost |
| Type | Inductive | Inductive | Inductive |
| Vin(Max), V | 5.5 | 5.5 | 5.5 |
| Vin(Min), V | 2.7 | 2.7 | 2.7 |
| Vout(Max), V | 21 | 21 | 21 |
Eco Plan
| LM3509SD/NOPB | LM3509SDE/NOPB | LM3509SDX/NOPB | |
|---|---|---|---|
| RoHS | Compliant | 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: LM3509 (3)
Manufacturer's Classification
- Semiconductors> Power Management> LED Driver> Backlight
