LP5521YQX/NOPB Clock Timer ICS LED Lighting Drivers 3 channel RGB/White LED driver with internal program memory and inte
timer ic chip
,time delay ic chip
LP5521YQX/NOPB Clock Timer ICS LED Lighting Drivers 3 channel RGB/White LED driver with internal program memory and inte
1 Features
- Adaptive Charge Pump With 1× and 1.5× Gain Provides Up to 95% LED Drive Efficiency
-
Charge Pump with Soft Start and Overcurrent, Short-Circuit Protection
-
Low Input Ripple and EMI
-
Very Small Solution Size, No Inductor or Resistors Required
-
200-nA Typical Shutdown Current
-
Automatic Power Save Mode
-
I2C-Compatible Interface
-
Independently Programmable Constant Current Outputs with 8-Bit Current Setting and 8-Bit PWM Control
-
Typical LED Output Saturation Voltage 50 mV and Current Matching 1%
-
Three Program Execution Engines with Flexible Instruction Set
-
Autonomous Operation Without External Control
-
Large SRAM Program Memory
-
Two General Purpose Digital Outputs
2 Applications
-
Fun and Indicator Lights
-
LCD Sub-Display Backlighting
-
Keypad RGB Backlighting and Phone Cosmetics
-
Vibra, Speakers, Waveform Generator
-
Blood Glucose Meter
-
Handheld POS Terminals
-
Electronic Access Control
-
Where RGB Indication is Needed
3 Description
The LP5521 is a three-channel LED driver designed to produce variety of lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521 can operate autonomously without processor control allowing power savings.
The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.
Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.
The LP5521 has a flexible digital interface. Trigger I/O and a 32-kHz clock input allow synchronization between multiple devices. Interrupt output can be used to notify processor, when LED sequence has ended. The LP5521 has four pin selectable I2C- compatible addresses. This allows connecting up to four parallel devices in one I2C-compatible bus. GPO and INT pins can be used as a digital control pin for other devices.
The LP5521 requires only four small, low-cost ceramic capacitors.
Comprehensive application tools are available, including command compiler for easy LED sequence programming.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE |
|
LP5521TM |
DSBGA (20) |
2.093 mm × 1.733 mm (MAX) |
|
LP5521YQ |
WQFN (24) |
5.00 mm × 4.00 mm (NOM) |
W25N01GVZEIG SLC Nand Flash Memory IC 3V 1G BIT Winbond TW SPI
PF48F4400P0VBQEK NEW AND ORIGINAL STOCK
DSPIC30F3011-30I/PT Flash Memory IC NEW AND ORIGINAL STOCK
IR2110PBF NEW AND ORIGINAL STOCK
S25FL032P0XMFI010 SOP8 104MHz Flash Memory IC Chip
W25Q80DVSNIG Serial Flash Chip 3V 8M BIT Dual Quad Spi Memory Integrated Circuit
MOS Tube Field Effect Single-Chip Drive PWM Controlador Module IRF520
MAX485, RS485 Module TTL To RS-485 Module TTL To 485
SKY65336-11 NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
W25N01GVZEIG SLC Nand Flash Memory IC 3V 1G BIT Winbond TW SPI |
FLASH - NAND (SLC) Memory IC 1Gbit SPI - Quad I/O 104 MHz 7 ns 8-WSON (8x6)
|
|
|
|
PF48F4400P0VBQEK NEW AND ORIGINAL STOCK |
FLASH - NOR (MLC) Memory IC 512Mbit CFI 52 MHz 110 ns 64-LBGA (11x13)
|
|
|
|
DSPIC30F3011-30I/PT Flash Memory IC NEW AND ORIGINAL STOCK |
dsPIC dsPIC™ 30F Microcontroller IC 16-Bit 30 MIPs 24KB (8K x 24) FLASH 44-TQFP (10x10)
|
|
|
|
IR2110PBF NEW AND ORIGINAL STOCK |
Half-Bridge Gate Driver IC Non-Inverting 14-DIP
|
|
|
|
S25FL032P0XMFI010 SOP8 104MHz Flash Memory IC Chip |
FLASH - NOR Memory IC 32Mbit SPI - Quad I/O 104 MHz 8-SOIC
|
|
|
|
W25Q80DVSNIG Serial Flash Chip 3V 8M BIT Dual Quad Spi Memory Integrated Circuit |
FLASH - NOR Memory IC 8Mbit SPI - Quad I/O 104 MHz 8-SOIC
|
|
|
|
MOS Tube Field Effect Single-Chip Drive PWM Controlador Module IRF520 |
N-Channel 100 V 9.2A (Tc) 60W (Tc) Through Hole TO-220AB
|
|
|
|
MAX485, RS485 Module TTL To RS-485 Module TTL To 485 |
1/1 Transceiver Half RS422, RS485 8-uMAX/uSOP
|
|
|
|
SKY65336-11 NEW AND ORIGINAL STOCK |
RF Front End 2.4GHz ISM 28-MCM (8x8)
|