Texas Instruments LP5521YQ/NOPB
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 24-VFQFN Exposed Pad |
| Frequency | 1.25MHz |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -30°C ~ 85°C (TA) |
| Type | DC DC Regulator |
| Number of Outputs | 3 |
| Voltage - Output | 4.55V |
| Applications | Backlight |
| Supplier Device Package | 24-WQFN (5x4) |
| Dimming | I²C |
| Topology | Switched Capacitor (Charge Pump) |
| Current - Output / Channel | 25.5mA |
| Internal Switch(s) | Yes |
| Voltage - Supply (Max) | 5.5V |
| Voltage - Supply (Min) | 2.7V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | LP5521 |
| REACH Status | REACH Unaffected |
| Standard Package | 1,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LP5521YQ/NOPB programmable LED driver
The LP5521YQ/NOPB is a programmable 9-channel LED driver from Texas Instruments, designed for advanced lighting control in IoT devices, wearables, and automotive interior lighting. This I²C-configurable IC features individual 8-bit PWM control per channel, enabling 16 million color mixing with smooth dimming transitions (0.1% resolution). Its integrated charge pump supports 1x/1.5x/2x modes, efficiently driving LEDs (up to 25mA/channel) from 2.7V to 5.5V inputs while maintaining 85% peak efficiency. The auto-incrementing sequencer engine executes standalone lighting patterns (stored in 16-step program memory) without host intervention, ideal for battery-powered smart tags, gaming peripherals, and HMI status indicators.
The LP5521YQFN/NOPB includes adaptive current scaling to compensate for LED forward voltage variations, ensuring consistent brightness across temperature. Packaged in a 24-pin WQFN (4mm×4mm), it features ±8kV ESD protection and operates from -40°C to +85°C, suitable for automotive ambient lighting and industrial panel displays. Texas Instruments provides Lighting Designer GUI for real-time pattern prototyping, accelerating development for dynamic RGB lighting, biometric feedback UIs, and retail signage.
Alternative LED Driver IC Models
● LP55231YQFR: TI's 9-channel driver with higher 50mA/channel current and adaptive headroom control.
● IS31FL3236A-QFLS4: Lumissil's 36-channel LED driver with 12-bit PWM for cinematic lighting.
● MAX6969ATH+T: Maxim's 8-port driver with 64-step animation engine for matrix displays.
● PCA9633DP2: NXP's 4-channel I²C driver with group dimming/blinking for cost-sensitive designs.
● AW99703BQR: Diodes's 6-channel driver with audio synchronization for smart speakers.
