LP8557IAYFQR
Active28V 6 BOOST CONVERTER DC-DCVOLTAGE STABILIZER 25MA 2.7V~5.5V DSBGA-16 LED DRIVERS ROHS
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LP8557IAYFQR
Active28V 6 BOOST CONVERTER DC-DCVOLTAGE STABILIZER 25MA 2.7V~5.5V DSBGA-16 LED DRIVERS ROHS
Technical Specifications
Parameters and characteristics for this part
| Specification | LP8557IAYFQR |
|---|---|
| Applications | Backlight |
| Current - Output / Channel [custom] | 25 mA |
| Dimming | PWM |
| Frequency | 1 MHz, 500 kHz |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 6 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -30 °C |
| Package / Case | 16-WFBGA, DSBGA |
| Supplier Device Package | 16-DSBGA |
| Topology | Step-Up (Boost) |
| Type | DC DC Regulator |
| Voltage - Output | 28 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 | $ 2.20 | |
| Digi-Reel® | 1 | $ 2.20 | ||
| Tape & Reel (TR) | 3000 | $ 1.01 | ||
| 6000 | $ 0.97 | |||
| LCSC | Piece | 1 | $ 1.39 | |
| 200 | $ 0.54 | |||
| 500 | $ 0.52 | |||
| 1000 | $ 0.51 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.66 | |
| 100 | $ 1.37 | |||
| 250 | $ 0.98 | |||
| 1000 | $ 0.74 | |||
Description
General part information
LP8557 Series
The LP8557 and LP8557I are high-efficiency LED drivers each featuring an integrated DC-DC inductive boost converter and six high-precision current sinks. LP8557 is intended for applications that exclusively use a pulse width modulated (PWM) signal for controlling the brightness while LP8557I is intended for applications that can utilize an I2C master as well.
The boost converter has adaptive output voltage control. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level under all conditions.
The adaptive current sink headroom voltage control scales the headroom voltage with the LED current for optimal system efficiency.
Documents
Technical documentation and resources
