Datasheet Texas Instruments LM3697
| Manufacturer | Texas Instruments |
| Series | LM3697 |
3 String Backlight Driver with 11-bits of Exponential Dimming
Datasheets
LM3697 High-Efficiency Three-String White LED Driver datasheet
PDF, 1.5 Mb, Revision: C, File published: Oct 23, 2015
Extract from the document
Status
| LM3697YFQR | |
|---|---|
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
Packaging
| LM3697YFQR | |
|---|---|
| N | 1 |
| Pin | 12 |
| Package Type | YFQ |
| Industry STD Term | DSBGA |
| JEDEC Code | R-XBGA-N |
| Package QTY | 3000 |
| Carrier | LARGE T&R |
| Device Marking | D8 |
| Thickness (mm) | .42 |
| Pitch (mm) | .4 |
| Max Height (mm) | .675 |
| Mechanical Data | Download |
Parametrics
| Parameters / Models | LM3697YFQR |
|---|---|
| Number of Channels | 3 |
| Duty Cycle(Max), % | 94 |
| LED | 30 |
| LED Current Per Channel, mA | 30 |
| Operating Temperature Range, C | -40 to 125 |
| Package Group | DSBGA |
| Package Size: mm2:W x L, PKG | See datasheet (DSBGA) |
| Peak Efficiency, % | 91 |
| Rating | Catalog |
| Shutdown Current(Typ), uA | 1 |
| Special Features | I2C Control,OVP,PWM Control |
| Switching Frequency(Max), kHz | 1100 |
| Topology | Boost |
| Type | Inductive |
| Vin(Max), V | 5.5 |
| Vin(Min), V | 2.7 |
| Vout(Max), V | 41.1 |
Eco Plan
| LM3697YFQR | |
|---|---|
| RoHS | 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: LM3697 (1)
Manufacturer's Classification
- Semiconductors> Power Management> LED Driver> Backlight