# Title: LED Driver 7 Click Board™ ## Description: How Does The LED Driver 7 Click Board™ Work? The LED Driver 7 Click Board™ features the LTC3490, single cell 350mA LED driver from Analog Devices. It provides a constant current drive for 1W LED applications. It is a high efficiency boost converter. Some of its key features include the 350mA Constant Current Output, Fixed Frequency Operation: 1.3MHz, Low Quiescent Current: <1mA and Dimming Control. The LED Driver 7 Click Board™ also features the AD5171, a 64-position OTP digital potentiometer from Analog Devices. The AD5171 is used for changing the voltage on the CTRL/SHDN pin. This voltage can control the LED drive current from 0mA to 350mA. The AD5171 uses fuse link technology to achieve the memory retention of the resistance setting function. OTP is a cost-effective alternative over the EEMEM approach for users who do not need to reprogram new memory settings in the digital potentiometer. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. The AD5171 is programmed using a 2-wire, I2 C®- compatible digital control. It allows unlimited adjustments before permanently setting the resistance value. During the OTP activation, a permanent fuse blown command is sent after the final value is determined, freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer). Given the options its features offer, the LED Driver 7 Click Board™ is ideally used for Portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements. The LED Driver 7 Click Board™ is designed to be operated only with 3.3V logic level. A proper logic voltage level conversion should be performed before the Click Board™ is used with MCUs with logic levels of 5V. SPECIFICATIONS Type LED Drivers Applications Portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements On-board modules LTC3490, single cell 350mA LED driver from Analog Devices AD5171, a 64-position OTP digital potentiometer also from Analog Devices Key Features Dimming Control, 350mA Constant Current Output, I2C-compatible digital interface Interface I2C Compatibility mikroBUS Click Board™ size S (28.6 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout on LED Driver 7 Click Board™ corresponds to the pinout on the mikroBUS socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator ## Product type: Click Board ## Vendor: Mikroelektronika d.o.o. ## Tags: Analog Devices, Click Board, Display Interface, LED Driver, Linear Technology, MikroE ## Price range: 19.6 - 19.6 GBP ## Link: https://thedebugstore.com/products/mikroe-3901-led-driver-7-click-uk ## Compare-at price range: 28.0 - 28.0 GBP ## Options - Title: Default Title ## Collections - [New Products](https://thedebugstore.com/a/llms/collections/new-products-debug-store) - [Mikroelektronika d.o.o. (MikroE)](https://thedebugstore.com/a/llms/collections/mikroelektronika-catalogue-uk) - [Analog Devices Development Boards and Support Tools | Debug Store](https://thedebugstore.com/a/llms/collections/analog-devices-device-support-uk) - [Comprehensive Device Support and Solutions from Linear Technology for Debug Store](https://thedebugstore.com/a/llms/collections/linear-technology-device-support) - [Display & Interface Click Boards™](https://thedebugstore.com/a/llms/collections/display-interface-click-boards-catalogue) - [MikroE Click Boards™](https://thedebugstore.com/a/llms/collections/mikroe-click-boards-catalogue-uk) - [LED Driver Click Boards™](https://thedebugstore.com/a/llms/collections/led-driver-click-boards-catalogue) - [Click Boards™ Summer Sale](https://thedebugstore.com/a/llms/collections/inventory-sale) - [MikroE Sale](https://thedebugstore.com/a/llms/collections/mikroe-sale) - [MIKROE Stock](https://thedebugstore.com/a/llms/collections/mikroe-products-in-stock-sale) ## Variants - Default Title, SKU: MIKROE-3917, Available: yes, Inventory: 1 ## Metafields - full_description:

How Does The LED Driver 7 Click Board™ Work?

The LED Driver 7 Click Board™ features the LTC3490, single cell 350mA LED driver from Analog Devices. It provides a constant current drive for 1W LED applications. It is a high efficiency boost converter. Some of its key features include the 350mA Constant Current Output, Fixed Frequency Operation: 1.3MHz, Low Quiescent Current: <1mA and Dimming Control.

LED Driver 7 Click Board™

The LED Driver 7 Click Board™ also features the AD5171, a 64-position OTP digital potentiometer from Analog Devices. The AD5171 is used for changing the voltage on the CTRL/SHDN pin. This voltage can control the LED drive current from 0mA to 350mA. The AD5171 uses fuse link technology to achieve the memory retention of the resistance setting function. OTP is a cost-effective alternative over the EEMEM approach for users who do not need to reprogram new memory settings in the digital potentiometer. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. The AD5171 is programmed using a 2-wire, I2 C®- compatible digital control. It allows unlimited adjustments before permanently setting the resistance value. During the OTP activation, a permanent fuse blown command is sent after the final value is determined, freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer).

Given the options its features offer, the LED Driver 7 Click Board™ is ideally used for Portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements.

The LED Driver 7 Click Board™ is designed to be operated only with 3.3V logic level. A proper logic voltage level conversion should be performed before the Click Board™ is used with MCUs with logic levels of 5V.

SPECIFICATIONS

Type LED Drivers
Applications Portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements
On-board modules LTC3490, single cell 350mA LED driver from Analog Devices AD5171, a 64-position OTP digital potentiometer also from Analog Devices
Key Features Dimming Control, 350mA Constant Current Output, I2C-compatible digital interface
Interface I2C
Compatibility mikroBUS
Click Board™ size S (28.6 x 25.4 mm)
Input Voltage 3.3V

 

PINOUT DIAGRAM

This table shows how the pinout on LED Driver 7 Click Board™ corresponds to the pinout on the mikroBUS socket (the latter shown in the two middle columns).

Notes Pin mikroBUS logo.png Pin Notes
  NC 1 AN PWM 16 NC  
  NC 2 RST INT 15 NC  
  NC 3 CS RX 14 NC  
  NC 4 SCK TX 13 NC  
  NC 5 MISO SCL 12 SCL I2C Clock
  NC 6 MOSI SDA 11 SDA I2C Data
Power Supply 3.3V 7 3.3V 5V 10 NC  
Ground GND 8 GND GND 9 GND Ground


ONBOARD SETTINGS AND INDICATORS

Label Name Default  Description
LD1 PWR - Power LED Indicator

 

- description_tag: The LED Driver 7 Click Board™ is equipped with the LTC3490, single-cell 350mA LED driver from Analog Devices. The LED Driver 7 Click Board™ can be used for portable lighting, rechargeable torches, system calibration, electronics level setting, and automotive electronics adjustments. Available from Debug Store UK. - title_tag: MikroE LED Driver 7 Click Board™ (MIKROE-3917) - manufacturer: Mikroelektronika d.o.o. - warranty: 12 months - amazon_enable: TRUE - amazon_title: LED Driver 7 Click Board - amazon_product_type: computercomponent - amazon_block: FALSE - amazon_prime_enable: FALSE - amazon_search: MikroElektronika Microelectronica MIKROE-1100 - amazon_uk_price: 20.24 - amazon_uk_currency: GBP - amazon_de_currency: EUR - amazon_de_price: 22.8712 - amazon_fr_currency: EUR - amazon_fr_price: 22.8712 - amazon_es_currency: EUR - amazon_es_price: 22.8712 - amazon_nl_currency: EUR - amazon_nl_price: 22.8712 - amazon_it_currency: EUR - amazon_it_price: 22.8712 - amazon_se_curency: SEK - amazon_se_price: 230.736 - amazon_product_id: 8606018719068 - amazon_product_id_type: EAN - amazon_update: Update - amazon_short_description: The LED Driver 7 Click Board™ is equipped with the LTC3490, single cell 350mA LED driver from Analog Devices. The LED Driver 7 Click Board™ can be used for portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements.The LED drive current can be reduced by changing the voltage on the CTRL/SHDN pin with AD5171, a 64-position OTP digital potentiometer from Analog Devices (ADI). - amazon_long_description:

The LED Driver 7 Click board™ is equipped with the LTC3490, single cell 350mA LED driver from Analog Devices. The LED Driver 7 click can be used for portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements.The LED drive current can be reduced by changing the voltage on the CTRL/SHDN pin with AD5171, a 64-position OTP digital potentiometer from Analog Devices (ADI).

LED Driver 7 click is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.

How Does The LED Driver 7 Click Board™ Work?

LED Driver 7 click features the LTC3490, single cell 350mA LED driver from Analog Devices. It provides a constant current drive for 1W LED applications. It is a high efficiency boost converter. Some of its key features include the 350mA Constant Current Output, Fixed Frequency Operation: 1.3MHz, Low Quiescent Current: <1mA and Dimming Control.

The LED Driver 7 click also features the AD5171, a 64-position OTP digital potentiometer from Analog Devices. The AD5171 is used for changing the voltage on the CTRL/SHDN pin. This voltage can control the LED drive current from 0mA to 350mA. The AD5171 uses fuse link technology to achieve the memory retention of the resistance setting function. OTP is a cost-effective alternative over the EEMEM approach for users who do not need to reprogram new memory settings in the digital potentiometer. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. The AD5171 is programmed using a 2-wire, I2 C®- compatible digital control. It allows unlimited adjustments before permanently setting the resistance value. During the OTP activation, a permanent fuse blown command is sent after the final value is determined, freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer).

Given the options its features offer, the LED Driver 7 click is ideally used for Portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements.

This Click Board™ is designed to be operated only with 3.3V logic level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with logic levels of 5V.

- amazon_main_image: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-front.jpg - amazon_other_image_1: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-back.jpg - amazon_other_image_2: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-fusion.jpg - amazon_other_image_3: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-shuttle.jpg - amazon_other_image_4: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-clicker.jpg - amazon_other_image_5: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-breadboard.jpg - amazon_other_image_6: https://www.thedebugstore.com/images/product/lg-led-driver-7-click-3917-breadboard.jpg - amazon_browse_node: 428655031 - mpn: MIKROE-3917 - backorder_label: If no stock shown above, check availability - examples:

We provide a library for the LED Driver 7 Click Board™ on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

Library provides full control of the LED's illumination. User can change the LED's brightness and apply "One Time Programming" with write function, or check the wiper and OTB bits with read function.

Key Functions

Example Description

The application is composed of three sections :

void application_task ( )
{
    for ( n_pos = 12; n_pos < pos_num; n_pos++ )
    {
        leddriver7_write ( LEDDRIVER7_NORM_OP_MODE, n_pos );
        ByteToStr( n_pos, test_log );
        mikrobus_logWrite( "Position :", _LOG_TEXT );
        mikrobus_logWrite( test_log, _LOG_LINE );
        Delay_ms( 500 );
    }
}

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

Additional Notes and Information

Depending on the development board you are using, you may need a USB UART Click Board™, USB UART 2 Click Board™ or RS232 Click Board™ to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

MIKROSDK

The LED Driver 7 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click Board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

- attachments: [{"download_file":[{"download_file":"LED Driver 7 Click Board™ Schematic"}],"download_filetype":[{"download_filetype":"pdf"}]},{"download_file":[{"download_file":"Analog Devices LTC3490 LED Driver Datasheet"}],"download_filetype":[{"download_filetype":"pdf"}]},{"download_file":[{"download_file":"Analog Devices AD5171 Digital Potentiometer Datasheet"}],"download_filetype":[{"download_filetype":"pdf"}]}] - condition: new - custom_product: false - mpn: MIKROE-3917 - google_product_category: Electronics - custom_label_0: Click Board - device_vendor: Analog Devices Inc., Linear Technology/Analog Devices - device_type: AD5171BRJZ50-R2, LTC3490ES8#PBF - warranty: 12 months - brand: MikroE - manufacturer: Mikroelektronika d.o.o. - badge: - widget:

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The LED Driver 7 Click Board™ is equipped with the LTC3490, single-cell 350mA LED driver from Analog Devices. The LED Driver 7 Click Board™ can be used for portable lighting, rechargeable flashlights, system calibrations, electronics level settings, automotive electronics adjustments, mechanical trimmers and potentiometer replacements. The LED drive current can be reduced by changing the voltage on the CTRL/SHDN pin with AD5171, a 64-position OTP digital potentiometer from Analog Devices (ADI).