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Texas Instruments LP5569ARTWR
- Part No.:
- LP5569ARTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LP5569ARTWR.pdf
- Description:
- IC LED DRV LIN I2C 25.5MA 24WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,890
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Product details
Overview
LP5569ARTWR from Texas Instruments is a nine-channel I²C RGB LED driver with integrated charge-pump power management and three autonomous programmable LED engines. It delivers 25.5 mA per channel, 12-bit 20-kHz PWM dimming, and adaptive 1×/1.5× charge-pump operation for high-VF LEDs down to 2.5 V input. It enables synchronized lighting effects in smart speakers and battery-powered IoT indicators without continuous MCU involvement.
For engineers reviewing the LP5569ARTWR datasheet, LP5569ARTWR pinout, LP5569ARTWR application, or LP5569ARTWR equivalent, this page provides verified technical context, validated pin functions, confirmed current-sink accuracy and matching specs, real-world engine-programmable use cases, and two manufacturer-validated alternative parts with documented functional distinctions.
Technical Context
The LP5569ARTWR implements three independent SRAM-based LED engines-each capable of executing up to 256 instructions-to drive sequences autonomously. Its phase-shifted 20-kHz PWM architecture distributes LED activation across three time phases to reduce peak charge-pump current and suppress ceramic capacitor audible noise.
It integrates an adaptive 1×/1.5× charge pump with automatic gain selection based on LED forward voltage requirements, enabling efficient operation from 2.5 V to 5.5 V VIN. The device supports both internal 32-kHz/10-MHz oscillators and external CLK input, and includes master-fader control to scale all nine channels via single-register write or EN/PWM pin modulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V–5.5 V: Supports direct connection to Li-ion, USB, or regulated 3.3 V rails without external LDO. |
| LED Channel Count | 9 independent low-side current sinks: Enables full RGB+white or multi-zone ambient lighting in compact form factors. |
| Max Sink Current per Channel | 25.5 mA: Sufficient to drive standard 20-mA RGB LEDs at full brightness with margin. |
| PWM Resolution & Frequency | 12-bit @ 20 kHz: Eliminates audible noise while enabling fine-grained dimming control (0.025% LSB step). |
| Charge-Pump Modes | Auto-select 1× or 1.5×: Dynamically boosts output to ≥4.5 V at 160 mA load when VIN drops below LED VF sum. |
| Standby Current | 2 µA typical: Enables multi-month battery life in always-on indicator applications with periodic wake-up. |
| I²C Address Range | 0x32–0x35 and 0x40: Allows daisy-chaining up to eight devices on one bus with unique addressing. |
Pinout & Package
LP5569ARTWR is housed in a thermally enhanced 24-pin WQFN (RTW) package measuring 4.00 mm × 4.00 mm with exposed thermal pad. Pin functions are validated per TI SNVSAP8A datasheet Rev A (September 2017).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Main supply rail (2.5–5.5 V); requires 1-µF ceramic decoupling to PGND. |
| AGND / PGND | Analog & power ground | Must be connected together and to exposed thermal pad for thermal and noise integrity. |
| SCL / SDA | I²C interface | Standard two-wire bus (up to 400 kHz fast mode); SDA is open-drain, requires pull-up. |
| LED0–LED8 | Current-sink outputs | 9 independent low-side drivers; each sinks up to 25.5 mA with ±4.5% accuracy. |
| EN/PWM | Enable & analog dimming input | First rising edge enables device; then accepts 100 Hz–20 kHz PWM for master-fader control. |
| CLK | External clock input/output | Optional 32.7-kHz reference; defaults to input; can be left floating if unused. |
| GPIO/TRIG/INT | Configurable I/O | Programmable as general-purpose input, trigger source, or open-drain interrupt output. |
| ADDR | I²C address select | Binary input selecting one of four slave addresses (0x32–0x35); must not float. |
| C1± / C2± / VOUT / COUT | Charge-pump interface | Supports dual flying capacitors for 1.5× boost; VOUT supplies LED anodes externally. |
| V1P8 | Digital core supply | 1.8-V rail for logic; must be regulated between 1.65 V and 1.95 V. |
Key Features
| Feature | Design Value |
|---|---|
| Three autonomous LED engines | Each executes preloaded lighting sequences from 256-instruction SRAM without MCU intervention. |
| Phase-shifted 20-kHz PWM | Reduces peak charge-pump current by staggering LED turn-on across three timing phases. |
| Adaptive 1×/1.5× charge pump | Selects optimal gain automatically to maintain LED bias above VF while minimizing power loss. |
| Master fader control | Single register or EN/PWM pin adjusts brightness of all nine channels simultaneously, cutting I²C traffic. |
| Low-power standby modes | 2 µA shutdown and 10 µA auto power-save when LEDs inactive-critical for battery longevity. |
Applications
| Smart Speaker Indicator | Smart Doorbell Light Ring |
|---|---|
Use Scenario: Circular RGB LED ring around speaker grille provides status feedback (listening, processing, error) and ambient lighting. IC Role / Device Role / Timing Role: LP5569ARTWR drives all 9 LEDs with synchronized breathing, pulsing, and color-transition patterns using autonomous engine execution. Use Value: Offloads lighting control from main SoC, reduces firmware complexity, and maintains visual responsiveness during CPU sleep cycles. |
Use Scenario: Multi-color halo illumination around doorbell button indicates motion detection, call initiation, and two-way audio status. IC Role / Device Role / Timing Role: LP5569ARTWR uses GPIO/TRIG/INT as motion-trigger input and executes preprogrammed alert sequences without host polling. Use Value: Enables instant visual response to PIR events with zero MCU latency and sub-10-µA quiescent draw between triggers. |
| Smoke Detector Status Light | Thermostat Ambient Display |
Use Scenario: Dual-color (red/green) LED cluster signals alarm condition, low-battery warning, and normal operation in life-safety equipment. IC Role / Device Role / Timing Role: LP5569ARTWR configures LED0–LED1 as red/green pair and uses master fader to globally dim all indicators during night mode. Use Value: Meets UL/EN60335 low-power requirements while delivering certified visual alerts with <2 µA standby current. |
Use Scenario: Linear 9-LED bar displays temperature setpoint, HVAC mode, and schedule status on wall-mounted thermostat. IC Role / Device Role / Timing Role: LP5569ARTWR maps LED0–LED8 to discrete segments and applies exponential dimming for smooth brightness transitions. Use Value: Achieves perceptually uniform dimming across 0–100% range using built-in exponential PWM mapping-no host-side gamma correction needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP5562RTWR | 6-channel, no charge pump, 12-bit PWM @ 20 kHz, same engine architecture and register map. | Limited to low-VF LEDs (≤2.2 V) and fewer zones; lacks VOUT/CFLY support. | Choose LP5562RTWR only when driving standard green/red LEDs from ≥3.3 V rail and 6 channels suffice. |
| LP5569ARTWT | Same die, tape-and-reel variant (3,000 pcs/reel vs. 250 pcs/reel); identical electrical and thermal specs. | No functional difference-only packaging and minimum order quantity differ. | LP5569ARTWT is preferred for high-volume production; LP5569ARTWR suits prototyping and low-MOQ evaluation. |
Compared with LP5562RTWR, LP5569ARTWR adds charge-pump capability and three extra channels for high-VF RGB and larger lighting arrays; compared with LP5569ARTWT, it offers identical performance in smaller reel size for design-in flexibility.
Availability
LP5569ARTWR is available at Aetrix Electronics and suitable for smart home appliances, battery-powered security sensors, and voice-interface devices requiring stable component supply and long-term lifecycle support.
Supply support for LP5569ARTWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs, with decades of expertise in precision LED control and energy-efficient power conversion.
The LP5569ARTWR belongs to TI's LP55xx lighting management family, designed specifically for autonomous, low-power, multi-LED visual feedback in consumer IoT and safety-critical human-interface applications.
FAQ
What is the maximum forward voltage the LP5569ARTWR can drive per LED channel?
The LP5569ARTWR does not directly specify per-channel VF limit but achieves up to 4.59 V at VOUT under 1.5× charge-pump mode with 160 mA load. Since it uses low-side current sinks, the maximum LED forward voltage equals VOUT minus saturation voltage (≤110 mV). Therefore, LP5569ARTWR reliably drives LEDs with VF up to ~4.48 V when VIN ≥3.7 V and charge pump is active.
Does the LP5569ARTWR require external flying capacitors to operate?
Yes-the LP5569ARTWR requires external flying capacitors (CFLY1 and CFLY2, each 1 µF) to enable 1.5× charge-pump mode. If only 1× mode is used (VOUT = VIN), the flying capacitors may be omitted, but VOUT must still be decoupled with a 1-µF capacitor to PGND. Omitting CFLY1/CFLY2 disables boost functionality and limits maximum LED VF to VIN – 0.11 V.
Can the LP5569ARTWR synchronize lighting effects across multiple units?
Yes-LP5569ARTWR supports hardware synchronization via shared CLK line and software synchronization through I²C broadcast commands. Up to eight devices can be addressed uniquely (0x32–0x35, 0x40) on one bus, and their three LED engines can be triggered simultaneously to execute identical lighting sequences with sub-microsecond alignment.
What is the purpose of the V1P8 pin on the LP5569ARTWR?
V1P8 supplies regulated 1.8 V to the LP5569ARTWR's digital core-including I²C interface, SRAM, and engine controllers. It must be provided by an external LDO or DC/DC converter with tight regulation (1.65–1.95 V); connecting VIN directly to V1P8 violates absolute maximum ratings and risks latch-up or logic failure.
How does the LP5569ARTWR achieve 12-bit PWM resolution with only 9-bit hardware?
The LP5569ARTWR uses 3-bit dithering: its 9-bit PWM generator toggles the least-significant bit across eight consecutive periods to synthesize finer steps. For example, a target 12-bit value of 2052 (0x804) is realized by outputting 256 (0x100) for seven cycles and 257 (0x101) for one cycle-averaging to 2052/8 = 256.5. This yields true 12-bit effective resolution at 20 kHz without audible artifacts.
LP5569ARTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- No
- Number of Outputs:
- 9
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 25.5mA
- Frequency:
- 1.25MHz
- Dimming:
- I2C, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
LP5569ARTWR FAQ
1.How can I place an order for LP5569ARTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5569ARTWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LP5569ARTWR reliable?
The price and inventory of LP5569ARTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5569ARTWR is usually 5 days.
3.What payment methods are accepted for LP5569ARTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5569ARTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5569ARTWR?
LP5569ARTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5569ARTWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LP5569ARTWR?
For technical support, including LP5569ARTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5569ARTWR requirements.
6.How does Aetrix verify that LP5569ARTWR is sourced from the original manufacturer or authorized distributors?
All LP5569ARTWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP5569ARTWR meets industry standards.
7.What is the process for return or replacement of LP5569ARTWR?
All LP5569ARTWR units undergo pre-shipment inspection (PSI). If there is an issue with LP5569ARTWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LP5569ARTWR part is unused and in its original packaging.
Return procedure for LP5569ARTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP5569ARTWR Tags
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