Low

LP55231SQE/NOPB - 

LED-Treiber, 9 Ausgänge, Ladepumpe, 2.7V-5.5Vin, 1.25MHz Schaltfrequenz, 5.5V/25.5mAout, WQFN-24

TEXAS INSTRUMENTS LP55231SQE/NOPB

Abbildung ggf. ähnlich. Alle Angaben ohne Gewähr. Ausschlaggebend sind die Produktinformationen des Herstellers.

Herstellerteilenummer:
LP55231SQE/NOPB
Bestellnummer:
2492301
Technisches Datenblatt:
(EN)
Technische Dokumentation anzeigen

Produktspezifikationen

:
24Pin(s)
:
2.7V
:
WQFN
:
-40°C
:
1.25MHz
:
5.5V
:
Ladungspumpe
:
85°C
:
9Ausgänge
:
-
:
5.5V
:
25.5mA
:
Stückweise
:
-
:
MSL 1 - unbegrenzt
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Produktbeschreibung

The LP55231SQE/NOPB is a 9-channel LED Driver designed to produce lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-ion battery voltage range. The device is equipped with an internal program memory, which allows operation without processor control. It has an I²C-compatible control interface with four pin-selectable addresses. The INT pin can be used to notify processor when a lighting sequence has ended (interrupt function). Also, the device has a trigger input interface, which allows synchronization, for example, between multiple LP55231 devices. Excellent efficiency is maintained over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements. The device is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10µA (typical).
  • Adaptive high-efficiency 1x/1.5x fractional charge pump - efficiency up to 94%
  • LED drive efficiency up to 93%
  • Charge pump with soft-start
  • Overcurrent and short-circuit protection
  • Built-in LED test
  • Two-wire I²C-compatible control interface
  • Flexible instruction set
  • Large SRAM program memory
  • Small application circuit
  • Source (high-side) drivers
  • Architecture supports colour control
  • 200nA Typical standby current
  • 10µA (IVDD) Typical automatic power save mode
  • Green product and no Sb/Br

Anwendungen

LED-Beleuchtung