LP5861T

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18-Kanal-RGB-LED-Treiber, mit 8-Bit-Analog- und 8-/16-Bit-PWM-Dimmfunktion

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Datenblatt

document-pdfAcrobat LP5861T 18-Channel High-Current LED Driver with 8-Bit Analog and 8-Bit or 16-Bit PWM Dimming datasheet (Rev. A) (Englisch) PDF | HTML

LP5861T

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Datenblatt

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VQFN (RSM)

32

16 mm² 4 x 4

Operating voltage range:
- V CC/V LED range: 2.7 V to 5.5 V
- Logic pins compatible with 1.8 V, 3.3 V, and 5 V
18 high current and precision constant current sinks:
- 125-mA per current sink when V CC ≥ 3.3 V
- Device-to-device error: ±5%
- Channel-to-channel error: ±5%
- Phase-shift for balanced transient power
Ultra-low power consumption:
- Shutdown mode: I CC ≤ 2 µA when EN = Low
- Standby mode: I CC ≤ 10 µA when EN = High and CHIP_EN = 0 (data retained)
- Active mode: I CC = 5 mA (typical) when channel current = 12.5 mA
Flexible dimming options:
- Individual ON/OFF control for each LED dot
- Analog dimming (current gain control)
  - Global 3-bit Maximum Current (MC) setting for all LED dots
  - 3 groups of 7-bit Color Current (CC) setting for red, green, and blue
  - Individual 8-bit Dot Current (DC) setting for each LED dot
- PWM dimming with audible-noise-free frequency
  - Global 8-bit PWM dimming for all LED dots
  - 3 programmable groups of 8-bit PWM dimming for LED dot arbitrary mapping
  - Individual 8-bit or 16-bit PWM dimming for each LED dot
Full addressable SRAM to minimize data traffic
Individual LED dot open and short detection
Deghosting and low brightness compensation
Interface options:
- 1-MHz (max.) I 2C interface when IFS = Low
- 12-MHz (max.) SPI interface when IFS = High

Operating voltage range:
- V CC/V LED range: 2.7 V to 5.5 V
- Logic pins compatible with 1.8 V, 3.3 V, and 5 V
18 high current and precision constant current sinks:
- 125-mA per current sink when V CC ≥ 3.3 V
- Device-to-device error: ±5%
- Channel-to-channel error: ±5%
- Phase-shift for balanced transient power
Ultra-low power consumption:
- Shutdown mode: I CC ≤ 2 µA when EN = Low
- Standby mode: I CC ≤ 10 µA when EN = High and CHIP_EN = 0 (data retained)
- Active mode: I CC = 5 mA (typical) when channel current = 12.5 mA
Flexible dimming options:
- Individual ON/OFF control for each LED dot
- Analog dimming (current gain control)
  - Global 3-bit Maximum Current (MC) setting for all LED dots
  - 3 groups of 7-bit Color Current (CC) setting for red, green, and blue
  - Individual 8-bit Dot Current (DC) setting for each LED dot
- PWM dimming with audible-noise-free frequency
  - Global 8-bit PWM dimming for all LED dots
  - 3 programmable groups of 8-bit PWM dimming for LED dot arbitrary mapping
  - Individual 8-bit or 16-bit PWM dimming for each LED dot
Full addressable SRAM to minimize data traffic
Individual LED dot open and short detection
Deghosting and low brightness compensation
Interface options:
- 1-MHz (max.) I 2C interface when IFS = Low
- 12-MHz (max.) SPI interface when IFS = High

The LP5861T is a high-current and high-performance LED matrix driver. The device integrates 18 constant current sinks with N (N = 6/8/11) switching MOSFETs to support N × 18 LED dots or N × 6 RGB LEDs. The LP5861T is the direct driving version to support 18 LED dots or 6 RGB LEDs.

The LP5861T supports both analog dimming and PWM dimming methods. For analog dimming, each LED dot can be adjusted with 256 steps. For PWM dimming, the integrated 8-bit or 16-bit configurable PWM generators enable smooth and audible-noise-free dimming control. Each LED dot can also be arbitrarily mapped into 8-bit Group PWM to achieve dimming control together.

The LP5861T device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5861T also supports LED open and short detection functions. Both 1-MHz (maximum) I 2C and 12-MHz (maximum) SPI are available in LP5861T.

The LP5861T is a high-current and high-performance LED matrix driver. The device integrates 18 constant current sinks with N (N = 6/8/11) switching MOSFETs to support N × 18 LED dots or N × 6 RGB LEDs. The LP5861T is the direct driving version to support 18 LED dots or 6 RGB LEDs.

The LP5861T supports both analog dimming and PWM dimming methods. For analog dimming, each LED dot can be adjusted with 256 steps. For PWM dimming, the integrated 8-bit or 16-bit configurable PWM generators enable smooth and audible-noise-free dimming control. Each LED dot can also be arbitrarily mapped into 8-bit Group PWM to achieve dimming control together.

The LP5861T device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5861T also supports LED open and short detection functions. Both 1-MHz (maximum) I 2C and 12-MHz (maximum) SPI are available in LP5861T.

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Data sheet	LP5861T 18-Channel High-Current LED Driver with 8-Bit Analog and 8-Bit or 16-Bit PWM Dimming datasheet (Rev. A)	PDF \| HTML	09 Aug 2023
	Certificate	LP5861TEVM EU Declaration of Conformity (DoC)		30 Jun 2023

Design und Entwicklung

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Evaluierungsplatine

LP5861TEVM — LP5861T Evaluierungsmodul für 18-kanaligen Hochstrom-LED-Treiber

Das Evaluierungsmodul LP5861T zeigt alle Funktionen des LP5861T-LED-Matrixtreibers. Die grafische Benutzeroberfläche (GUI) LP586x wird als Schnittstelle zwischen USB2ANY und dem EVM verwendet. Das EVM verfügt über SPI und I2C Eingänge über den USB2ANY-Schnittstellenadapter.

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LP5861T

18-Kanal-RGB-LED-Treiber, mit 8-Bit-Analog- und 8-/16-Bit-PWM-Dimmfunktion

LP5861T

Produktdetails

Technische Dokumentation

Design und Entwicklung

LP5861TEVM — LP5861T Evaluierungsmodul für 18-kanaligen Hochstrom-LED-Treiber

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

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