LM3697YFQR
Active3 STRING BACKLIGHT DRIVER WITH 11-BITS OF EXPONENTIAL DIMMING
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LM3697YFQR
Active3 STRING BACKLIGHT DRIVER WITH 11-BITS OF EXPONENTIAL DIMMING
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM3697YFQR |
|---|---|
| Applications | Backlight |
| Current - Output / Channel | 30 mA |
| Frequency | 1 MHz, 500 kHz |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 3 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | DSBGA, 12-WFBGA |
| Supplier Device Package | 12-DSBGA (1.64x1.24) |
| Topology | Step-Up (Boost) |
| Type | DC DC Regulator |
| Voltage - Output | 40 V |
| Voltage - Supply (Max) | 5.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 0.80 | |
| 10 | $ 0.70 | |||
| 25 | $ 0.66 | |||
| 100 | $ 0.54 | |||
| 250 | $ 0.50 | |||
| 500 | $ 0.42 | |||
| 1000 | $ 0.34 | |||
| Digi-Reel® | 1 | $ 0.80 | ||
| 10 | $ 0.70 | |||
| 25 | $ 0.66 | |||
| 100 | $ 0.54 | |||
| 250 | $ 0.50 | |||
| 500 | $ 0.42 | |||
| 1000 | $ 0.34 | |||
| Tape & Reel (TR) | 3000 | $ 0.26 | ||
| Texas Instruments | LARGE T&R | 1 | $ 0.52 | |
| 100 | $ 0.40 | |||
| 250 | $ 0.29 | |||
| 1000 | $ 0.21 | |||
Description
General part information
LM3697 Series
The LM3697 11-bit LED driver provides high-performance backlight dimming for 1, 2, or 3 series LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.
The LM3697 is a high-efficiency three-string power source for backlight or keypad LEDs in smart-phone handsets. The high-voltage inductive boost converter provides the power for three-series LED strings for display backlight and keypad functions (HVLED1, HVLED2, and HVLED3).
An additional feature is a pulse width modulation (PWM) control input for content adjustable backlight control, which can be used to control any high-voltage current sink.
Documents
Technical documentation and resources
