Catalog(1 parts)
| Part | Voltage - Supply (Min)▲▼ | Voltage - Output▲▼ | Voltage - Output▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Type | Voltage - Supply (Max)▲▼ | Current - Output / Channel▲▼ | Number of Outputs▲▼ | Mounting Type | Dimming | Topology | Package / Case | Frequency▲▼ | Supplier Device Package | Applications | Internal Switch(s)▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LP5520TL/NOPBLED Driver IC 3 Output DC DC Regulator Step-Up (Boost) PWM Dimming 60mA 25-uSMD | 2.9000000953674316 V | 5 V | 20 V | -30 °C | 85 °C | DC DC Regulator | 5.5 V | 0.05999999865889549 A | 3 ul | Surface Mount | PWM | Step-Up (Boost) | 25-WFBGA | 1220 Hz, 19520 Hz | 25-uSMD | Backlight |
Key Features
• Temperature Compensated LED Intensity and ColorIndividual Calibration Coefficients for Each ColorColor Accuracy ΔX and ΔY ≤ 0.00312-Bit ADC for Measurement of 2 SensorsAdjustable Current Outputs for Red, Green, and Blue (RGB) LED0.2% Typical LED Output Current MatchingPWM Control Inputs for Each ColorSPI and I2C-Compatible InterfaceStand-Alone Mode With One-Wire ControlSequential Mode for One Color at a TimeMagnetic High Efficiency Boost ConverterProgrammable Output Voltage from 5 V to 20 VAdaptive Output Voltage Control Option< 2-µA Typical Shutdown CurrentTemperature Compensated LED Intensity and ColorIndividual Calibration Coefficients for Each ColorColor Accuracy ΔX and ΔY ≤ 0.00312-Bit ADC for Measurement of 2 SensorsAdjustable Current Outputs for Red, Green, and Blue (RGB) LED0.2% Typical LED Output Current MatchingPWM Control Inputs for Each ColorSPI and I2C-Compatible InterfaceStand-Alone Mode With One-Wire ControlSequential Mode for One Color at a TimeMagnetic High Efficiency Boost ConverterProgrammable Output Voltage from 5 V to 20 VAdaptive Output Voltage Control Option< 2-µA Typical Shutdown Current
Description
AI
The LP5520 is an RGB backlight LED driver for small format color LCDs. RGB backlights enable better colors on the display and power savings compared with white LED backlights. The device offers a small and simple driver solution without need for optical feedback. Calibration in display module production can be done in one temperature. The LP5520 produces true white light over a wide temperature range. Three independent LED drivers have accurate programmable current sinks and PWM modulation control. Using internal calibration memory and external temperature sensor, the RGB LED currents are adjusted for perfect white balance independent of the brightness setting or temperature. The user programmable calibration memory has intensity vs temperature data for each color. This white balance calibration data can be programmed to the memory on the production line of a backlight module.
The device has a magnetic boost converter that creates a supply voltage of up to 20 V LED from the battery voltage. The output can be set at 1-V steps from 5 V to 20 V. In adaptive mode the circuit automatically adjusts the output voltage to minimum sufficient level for lowest power consumption. Temperature is measured using an external temperature sensor placed close to the LEDs. The second ADC input can be used, for example, for ambient light measurement.
The LP5520 is an RGB backlight LED driver for small format color LCDs. RGB backlights enable better colors on the display and power savings compared with white LED backlights. The device offers a small and simple driver solution without need for optical feedback. Calibration in display module production can be done in one temperature. The LP5520 produces true white light over a wide temperature range. Three independent LED drivers have accurate programmable current sinks and PWM modulation control. Using internal calibration memory and external temperature sensor, the RGB LED currents are adjusted for perfect white balance independent of the brightness setting or temperature. The user programmable calibration memory has intensity vs temperature data for each color. This white balance calibration data can be programmed to the memory on the production line of a backlight module.
The device has a magnetic boost converter that creates a supply voltage of up to 20 V LED from the battery voltage. The output can be set at 1-V steps from 5 V to 20 V. In adaptive mode the circuit automatically adjusts the output voltage to minimum sufficient level for lowest power consumption. Temperature is measured using an external temperature sensor placed close to the LEDs. The second ADC input can be used, for example, for ambient light measurement.