STEVAL-TLL011V1
Driver for up to 40 white LEDs for mid-sized LCD display backlight based on the STLD41-
Active
The STEVAL-TLL011V1 demonstration board demonstrates the performance of the STLD41, a boost converter that operates from 3.0 V to 21 V and which can provide an output voltage as high as 38 V.
It can drive up to 40 white LEDs connected in 4 strings of 10 LEDs in series. The total output current capability is 120 mA at an output voltage of 38 V.
Regulation is performed by the internal error amplifier which works with the feedback voltage from the sensing resistor.
The device can be turned ON/OFF by way of the logic signal connected to the EN pin.
The LEDs can be dimmed by applying a PWM signal to the PWM input.
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Datasheet
Key Features
- Boost DC-DC converter
- Drives up to 40 LEDs (4 strings of 10) with a total current up to 120 mA
- Input voltage range: 3.0 V to 21 V
- Output current control
- 1.8 MHz fixed frequency PWM control
- PWM input for output current dimming with a frequency range of 25 kHz - 50 kHz
- 2 A integrated switch
- Overvoltage protection
- Chip overtemperature detection and protection
- Less than 1 μA standby current
- Soft-start function
- RoHS compliant
Image
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DB1654: Driver for up to 40 white LEDs for mid-sized LCD display backlight based on the STLD41
|
2.0 | 215 KB |
Hardware Resources
Board Manufacturing Specification
| Description | Version | Size |
|---|---|---|
STEVAL-TLL011V1 gerber files
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1.0.0 | 65 KB |
Bill of Materials
| Description | Version | Size |
|---|---|---|
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STEVAL-TLL011V1 BOM
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1.0.0 | 9 KB |
Schematic Pack
| Description | Version | Size |
|---|---|---|
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STEVAL-TLL011V1 schematics
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1.0.0 | 26 KB |
Publications and Collaterals
Brochure
| Description | Version | Size |
|---|---|---|
|
Energy-efficient solutions for LED lighting
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1.0.0 | 4,215 KB |
Sample & Buy
Top| Part Number | Marketing Status | Core Product | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-TLL011V1 | Active | STLD41 | 134.92 |
| Ecopack2 | - | |||||||||||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors (**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices. |
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