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Texas Instruments LP5009PWR
- Part No.:
- LP5009PWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LP5009PWR.pdf
- Description:
- IC LED DRVR LIN PWM 35MA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,889
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Product details
Overview
LP5009PWR from Texas Instruments is a 9-channel, 12-bit PWM constant-current sink LED driver optimized for RGB indicator lighting in battery-constrained human-machine interfaces. It delivers up to 25.5 mA per channel across 2.7–5.5 V supply, features ultra-low 10 µA power-save mode current, and integrates independent color-mixing and brightness-control registers for smooth 29-kHz dimming without audible noise - deployed in smart speakers and video doorbells.
For engineers reviewing the LP5009PWR datasheet, LP5009PWR pinout, LP5009PWR application, or LP5009PWR equivalent, this page provides verified technical context on I²C-controlled RGB LED driving, thermal performance in TSSOP-24, bank-based animation control, and validated alternatives for low-quiescent-current multi-channel LED systems.
Technical Context
The LP5009PWR implements nine independent 12-bit, 29-kHz PWM generators with programmable logarithmic or linear intensity scaling and integrated 3-phase PWM phase-shifting to reduce input ripple. Each channel operates as a precision constant-current sink with ±5% device-to-device and channel-to-channel current matching at 10 mA.
It uses a single external resistor (IREF) to set global output current, supports up to four devices via two hardware address pins (ADDR0/ADDR1), and enters 10 µA power-save mode automatically after all LEDs remain off for >30 ms - enabling long battery life in always-on indicators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 5.5 V - supports direct connection to common logic rails without level shifters. |
| Output Channels | 9 constant-current sinks - drives full RGB modules (3×LED per module) with one LP5009PWR. |
| Max Sink Current | 25.5 mA per channel (full VCC range); 35 mA when VCC ≥ 3.3 V - enables bright indicator operation with standard red/green/blue LEDs. |
| PWM Resolution & Freq | 12-bit effective resolution (9-bit + 3-bit dithering) at 29 kHz - eliminates audible noise and enables smooth dimming curves. |
| Quiescent Current | 10 µA typical in power-save mode (EN high, all LEDs off >30 ms) - critical for battery-powered endpoint longevity. |
| I²C Speed | Up to 400 kHz fast-mode - allows rapid configuration of all 9 channels in <1 ms over standard microcontroller I²C peripherals. |
| Current Accuracy | ±5% device-to-device and ±5% channel-to-channel error - ensures consistent color balance across multiple LP5009PWR units and outputs. |
Pinout & Package
LP5009PWR is packaged in a 24-pin TSSOP (PW) with 7.80 mm × 4.40 mm body size and exposed thermal pad connected to PGND/AGND/DGND. Pin functions are validated per TI SLVSEH2B Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Chip enable input | Active-high enable; pulls device into shutdown (1 µA max) when low - used for system-level power gating. |
| SCL / SDA | I²C bus interface | Standard bidirectional I²C lines compatible with 1.8 V / 3.3 V / 5 V logic - no external level shifters required. |
| ADDR0 / ADDR1 | Slave address selection | Two binary inputs allowing up to four unique I²C addresses on same bus - simplifies multi-driver designs. |
| OUT0–OUT8 | Constant-current sink outputs | Nine dedicated current sinks; each drives one LED anode via external VLED rail - supports independent RGB channel control. |
| IREF | Global current reference | Connects external resistor to set all channel currents simultaneously - enables precise, matched brightness scaling. |
| VCAP | LDO output filter | Requires 1-µF ceramic capacitor to GND - stabilizes internal 1.8-V LDO powering digital core and PWM logic. |
| VCC / AGND / PGND / DGND | Power and ground domains | Separate analog, power, and digital grounds must be tied together externally - ensures low-noise PWM timing and current accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Independent color-mixing register per channel | 8-bit per channel (OUTx_COLOR) enables >16M color combinations across 3 RGB modules - eliminates software color math overhead. |
| Programmable logarithmic or linear brightness scale | Configurable via Log_Scale_EN register - preserves color fidelity during dimming while matching human eye response. |
| Three programmable LED banks (R/G/B) | Global R/G/B bank registers allow synchronized breathing/fade effects across all 9 outputs with single register writes - reduces MCU interrupt load by >70% vs per-channel updates. |
| Automatic power-save mode | Enters 10 µA state after 30 ms idle - extends coin-cell battery life to >1 year in always-on smart lock indicators. |
| 3-phase PWM phase-shifting | Distributes LED turn-on events across three time domains - cuts peak input current by ~40% and suppresses ceramic capacitor ringing. |
Applications
| Smart Speaker Indicator | Video Doorbell Status Light |
|---|---|
|
Use Scenario: Visual feedback for voice assistant wake state, mute status, and network connectivity in compact audio enclosures. IC Role / Device Role / Timing Role: 9-channel constant-current sink driving three RGB LEDs (front panel, top ring, status bar) with synchronized breathing and color-coded alerts. Use Value: 29-kHz PWM eliminates coil whine in proximity to audio components; 10 µA power-save mode enables always-on readiness without draining USB-powered backup batteries. |
Use Scenario: Real-time doorbell press indication, motion detection alert, and Wi-Fi pairing status on outdoor-rated enclosures. IC Role / Device Role / Timing Role: Drives dual RGB LEDs (front-facing + side-mounted) using bank-controlled fade-in/fade-out and color-shift animations. Use Value: ±5% channel matching ensures uniform color across both LEDs; I²C broadcast addressing allows simultaneous firmware update of multiple doorbells in a home network. |
| Smart Home Appliance UI | Electronic Smart Lock |
|
Use Scenario: Touch-responsive status lighting on refrigerator displays, oven control panels, and laundry machine interfaces. IC Role / Device Role / Timing Role: Controls 9-output RGB array for multi-zone backlighting and dynamic icon highlighting under variable ambient light. Use Value: Independent color/brightness registers enable real-time hue adjustment without flicker; VCC compatibility with 3.3 V MCU rails simplifies PCB routing. |
Use Scenario: Secure entry confirmation, low-battery warning, and tamper-alert lighting on battery-operated deadbolts. IC Role / Device Role / Timing Role: Powers three RGB LEDs (keypad, status ring, interior indicator) with ultra-low-power fade sequences and secure color-coded alerts. Use Value: 1 µA shutdown current extends CR123A battery life beyond 2 years; thermal shutdown (160 °C) prevents overheating in sealed metal housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RGB LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59116IPWPR | 16-channel, 12-bit PWM, but no integrated phase-shifting or bank control; higher 25 mA/channel max; 200 µA standby current. | Lacks automatic power-save mode and RGB bank abstraction - requires more MCU cycles for synchronized effects. | Choose when higher channel count is needed and battery life is secondary to feature density. |
| PCA9635D,118 | 16-channel, 8-bit PWM, 1.8–5.5 V operation; 10 µA standby but no logarithmic dimming or phase-shifting; ±10% current accuracy. | Lower resolution and accuracy limit color fidelity; no bank control requires per-channel register writes for group effects. | Choose for cost-sensitive, non-critical indicator applications where 8-bit dimming suffices and thermal constraints are relaxed. |
Compared with TLC59116IPWPR and PCA9635D,118, the LP5009PWR delivers superior battery efficiency via its 10 µA power-save mode, maintains color integrity with ±5% matching and logarithmic scaling, and reduces firmware complexity through hardware-accelerated bank control - making it optimal for consumer HMI requiring vivid, low-power RGB animation.
Availability
LP5009PWR is available at Aetrix Electronics and suitable for smart speaker interfaces, video doorbell status lighting, and electronic smart lock indicators requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LP5009PWR 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 U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and interface solutions.
The LP50xx family - including LP5009PWR - was designed specifically for ultra-low-quiescent-current RGB LED driving in battery-powered human-machine interfaces, emphasizing simplified firmware, noise-free operation, and consistent color rendering.
FAQ
What is the maximum output current per channel for LP5009PWR?
The LP5009PWR delivers up to 25.5 mA per channel across its full 2.7–5.5 V VCC range. When VCC is ≥3.3 V, it supports up to 35 mA per channel using the Max_Current_Option bit. This is set globally via the IREF pin resistor and applies uniformly to all nine OUT0–OUT8 outputs.
Does LP5009PWR support logarithmic dimming for human-eye-friendly brightness control?
Yes, LP5009PWR supports configurable logarithmic or linear brightness scaling via the Log_Scale_EN register. Unlike single-register drivers, its independent color-mixing and intensity-control architecture prevents color distortion during logarithmic dimming - a key advantage for accurate RGB indicator rendering.
How does LP5009PWR reduce input power supply ripple during multi-LED activation?
LP5009PWR implements a 3-phase PWM phase-shifting scheme that staggers the turn-on timing of its nine output channels across three temporal domains. This distributes peak current demand, reducing input ripple by ~40% and suppressing ceramic capacitor audible ringing - critical in noise-sensitive audio and security devices.
Can LP5009PWR drive more than three RGB LEDs?
Yes, LP5009PWR's nine constant-current sinks can drive up to three full RGB LED modules (3×3 = 9 channels), or be configured for mixed topologies - e.g., three RGB + three single-color indicators. Its bank control (R/G/B) and independent channel registers support flexible allocation without hardware changes.
What package options are available for LP5009PWR?
LP5009PWR is offered exclusively in the 24-pin TSSOP (PW) package with 7.80 mm × 4.40 mm body size and internal thermal pad connected to AGND/PGND/DGND. This package is distinct from the WQFN (RUK) variant used for LP5009RUK - pinout, thermal performance, and PCB layout are not interchangeable.
LP5009PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- No
- Number of Outputs:
- 9
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 0V ~ 5.5V
- Current - Output / Channel:
- 35mA
- Frequency:
- 29kHz
- Dimming:
- Analog, PWM
- Applications:
- LED Lighting
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
LP5009PWR FAQ
1.How can I place an order for LP5009PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5009PWR 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 LP5009PWR reliable?
The price and inventory of LP5009PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5009PWR is usually 5 days.
3.What payment methods are accepted for LP5009PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5009PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5009PWR?
LP5009PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5009PWR 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 LP5009PWR?
For technical support, including LP5009PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5009PWR requirements.
6.How does Aetrix verify that LP5009PWR is sourced from the original manufacturer or authorized distributors?
All LP5009PWR 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 LP5009PWR meets industry standards.
7.What is the process for return or replacement of LP5009PWR?
All LP5009PWR units undergo pre-shipment inspection (PSI). If there is an issue with LP5009PWR, 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 LP5009PWR part is unused and in its original packaging.
Return procedure for LP5009PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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