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
Applications
LED Lighting
Product details
| Device Topology |
Charge Pump |
| Input Voltage Min |
2.7V |
| Input Voltage Max |
5.5V |
| Output Voltage Max |
5.5V |
| Output Current Max |
25.5mA |
| Switching Frequency |
1.25MHz |
| No. of Outputs |
9Outputs |
| IC Mounting |
Surface Mount |
| Driver Case Style |
WQFN |
| No. of Pins |
24Pins |
| Operating Temperature Min |
-40°C |
| Operating Temperature Max |
85°C |
| Product Range |
- |
| Automotive Qualification Standard |
- |
| MSL |
MSL 1 - Unlimited |
Other details
| Brand |
TEXAS INSTRUMENTS |
| Part Number |
LP55231SQE/NOPB |
| Quantity |
Each (Supplied on Cut Tape) |
| Product Change Notice EN |
 |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
