LP5521YQ/NOPB
Active3 CHANNEL RGB/WHITE LED DRIVER WITH INTERNAL PROGRAM MEMORY AND INTEGRATED CHARGE PUMP
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LP5521YQ/NOPB
Active3 CHANNEL RGB/WHITE LED DRIVER WITH INTERNAL PROGRAM MEMORY AND INTEGRATED CHARGE PUMP
Technical Specifications
Parameters and characteristics for this part
| Specification | LP5521YQ/NOPB |
|---|---|
| Applications | Backlight |
| Current - Output / Channel | 25.5 mA |
| Dimming | I2C |
| Frequency | 1.25 MHz |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 3 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -30 °C |
| Package / Case | 24-VFQFN Exposed Pad |
| Supplier Device Package | 24-WQFN (5x4) |
| Topology | Switched Capacitor (Charge Pump) |
| Type | DC DC Regulator |
| Voltage - Output | 4.55 V |
| Voltage - Supply (Max) | 5.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.96 | |
| 10 | $ 1.76 | |||
| 25 | $ 1.66 | |||
| 100 | $ 1.42 | |||
| 250 | $ 1.33 | |||
| 500 | $ 1.16 | |||
| Digi-Reel® | 1 | $ 1.96 | ||
| 10 | $ 1.76 | |||
| 25 | $ 1.66 | |||
| 100 | $ 1.42 | |||
| 250 | $ 1.33 | |||
| 500 | $ 1.16 | |||
| Tape & Reel (TR) | 1000 | $ 0.96 | ||
| 2000 | $ 0.90 | |||
| 5000 | $ 0.86 | |||
| 10000 | $ 0.83 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.47 | |
| 100 | $ 1.22 | |||
| 250 | $ 0.87 | |||
| 1000 | $ 0.66 | |||
Description
General part information
LP5521 Series
The LP5521 is a three-channel LED driver designed to produce variety of lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521 can operate autonomously without processor control allowing power savings.
The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.
Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.
Documents
Technical documentation and resources
