Catalog
Single channel programmable LED driver
Key Features
• Programmable Blinking Sequence1 to 3 Programmable Pulses1 ms to 255 ms LED on Time10 ms to 2500 ms LED Off TimeSingle or Continuous Run of Programmed Blinking SequenceConstant Current High Side Output DriverAdjustable Current with External Resistor0.2 µA Typical Shutdown CurrentAutonomous Operation without External ClockDSBGA-6 Package with 0.4 mm Pitch:1.215 mm x 0.815 mm x 0.6 mm (LxWxH)All trademarks are the property of their respective owners.Programmable Blinking Sequence1 to 3 Programmable Pulses1 ms to 255 ms LED on Time10 ms to 2500 ms LED Off TimeSingle or Continuous Run of Programmed Blinking SequenceConstant Current High Side Output DriverAdjustable Current with External Resistor0.2 µA Typical Shutdown CurrentAutonomous Operation without External ClockDSBGA-6 Package with 0.4 mm Pitch:1.215 mm x 0.815 mm x 0.6 mm (LxWxH)All trademarks are the property of their respective owners.
Description
AI
The LP5522 is a simple single wire programmable LED controller in six bump DSBGA package. It provides constant current flow through high side driver. Output current can be set from 1 mA to 20 mA by using an external resistor on the ISET pin. If no external resistor is used, output current is set to 5 mA default current. The LP5522 is controlled using only one signal. The signal controls either directly the LED driver or it launches previously programmed blinking sequence.
The LP5522 works autonomously without a clock signal from the master device. Very low LED driver headroom voltage makes possible to use supply voltages close to LED forward voltage. Current consumption of the LP5522 is minimized when LED is turned off and once controller is disabled all supporting functions are also shut down. Very small DSBGA package together with minimum number of external components is a best fit for handheld devices.
The LP5522 is a simple single wire programmable LED controller in six bump DSBGA package. It provides constant current flow through high side driver. Output current can be set from 1 mA to 20 mA by using an external resistor on the ISET pin. If no external resistor is used, output current is set to 5 mA default current. The LP5522 is controlled using only one signal. The signal controls either directly the LED driver or it launches previously programmed blinking sequence.
The LP5522 works autonomously without a clock signal from the master device. Very low LED driver headroom voltage makes possible to use supply voltages close to LED forward voltage. Current consumption of the LP5522 is minimized when LED is turned off and once controller is disabled all supporting functions are also shut down. Very small DSBGA package together with minimum number of external components is a best fit for handheld devices.
