GUI for evaluation module (EVM)
Data sheet
LP5009
- Operating voltage range:
- VCC range: 2.7 V to 5.5 V
- EN, SDA, and SCL pins compatible with 1.8-V, 3.3-V, and 5-V power rails
- Output maximum voltage: 6 V
- 12 Constant-current sinks with high precision
- 25.5 mA Maximum per channel with VCC in full range
- 35 mA Maximum per channel when VCC ≥ 3.3 V
- Device-to-device error: ±5%; channel-to-channel error: ±5%
- Ultra-low quiescent current:
- Shutdown mode: 1 µA (maximum) with EN low
- Power-saving mode: 10 µA (typical) with EN high and all LEDs off for > 30 ms
- Integrated 12-bit, 29-kHz PWM generator for each channel:
- Independent color-mixing register per channel
- Independent brightness-control register per RGB LED module
- Optional logarithmic- or linear-scale brightness control
- Integrated 3-phase PWM-shifting scheme
- 3 Programmable banks (R, G, B) for easy software control of each color
- 2 External hardware address pins allow connecting up to 4 devices
- Broadcast slave address allows configuring multiple devices simultaneously
- Auto-increment allows writing or reading consecutive registers within one transmission
- Up to 400-kHz fast-mode I2C speed
In smart homes and other applications that use human-machine-interaction, high-performance RGB LED drivers are required. LED animation effects such as flashing, breathing and chasing that greatly improves user experience, and minimal system noise is essential.
The LP50xx device is an 9- or 12-channel constant current sink LED driver. The LP50xx device includes integrated color mixing and brightness control, and pre-configuration simplifies the software coding process. Integrated 12-bit, 29-kHz PWM generators for each channel enable smooth, vivid color for LEDs, and eliminate audible noise.
The LP50xx device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color mixing and intensity control registers make the software coding straightforward. When targeting a fade-in, fade-out type breathing effect, the global R, G, B bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.
The LP50xx device implements an automatic power-saving mode to achieve ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, which makes the LP50xx device a potential choice for battery-powered end equipment.
Technical documentation
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View all 5 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LP50xx 9-, 12-Channel, 12-Bit PWM Ultra-low Quiescent Current I2C RGB LED Drivrs datasheet (Rev. B) | 21 Aug 2020 | |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Application note | System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device | 08 Apr 2020 | ||
| Application note | How to Select a RGB LED Driver | 08 Aug 2019 | ||
| EVM User's guide | LP5012EVM User's Guide | 08 May 2019 |
Design & development
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Evaluation board
LP5012EVM — LP5012EVM, 12-bit PWM ultralow quiescent current I2C RGB LED driver evaluation module, suitable for
The LP5012EVM (evaluation module) helps the user evaluate the features of the Texas Instruments LP5012, whichis an I2C bus-controlled, 12-channel, constant-current LED driver. The user’s guide includes set-up instructions, a schematic diagram, a bill of materials, printed-circuit board layout (...)
User guide: PDF
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (PW) | 24 | Ultra Librarian |
| WQFN (RUK) | 20 | Ultra Librarian |
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