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LP3931

Features: · High Efficiency Programmable 300 mA Magnetic Boost DC-DC converter· 2 separately controlled PWM RGB LED drivers with programmable color, brightness, turn on/off slopesand blinking patterns· FLASH function with up to 6 outputs, each up to 120 mA·Functions software controlled through SPI...

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SeekIC No. : 004398857 Detail

LP3931: Features: · High Efficiency Programmable 300 mA Magnetic Boost DC-DC converter· 2 separately controlled PWM RGB LED drivers with programmable color, brightness, turn on/off slopesand blinking patter...

LP3931 Data Sheet

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Part Number:
LP3931
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· High Efficiency Programmable 300 mA Magnetic Boost DC-DC converter
· 2 separately controlled PWM RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking patterns
· FLASH function with up to 6 outputs, each up to 120 mA
·Functions software controlled through SPI interface
·Additional LED on/off and dimming hardware control
· Programmable low current Standby mode
· Low voltage digital interface down to 1.8V
· Space efficient 24-pin LLP package


Application

·GSM Cellular Phones
· WCDMA, CDMA and CDMA2000 Phones
· PHS and PDC Cellular Phone


Pinout

Connection Diagram


Specifications

V (SW, FB, R1- 2, G1-2, B1-2) pins:
Voltage to GND (Notes 3, 4)   .....................−0.3V to +7.2V
VDD1, VDD2, VDD_IO ..........................−0.3V to +6.0V
Voltage on Logic Pins ........................0.3V to VDD_IO
.................................+0.3V, with 6.0V max
I (R1, G1, B1, R2, G2, B2)
(Note 5)   ...................................150 mA
I (VREF) .....................................10 A
Continuous Power Dissipation
(Note 6) Internally Limited
Junction Temperature (T J-MAX)........................ 125°C
Storage Temperature Range................... −65°C to +150°C
Maximum Lead Temperature
(Reflow soldering, 3 times)
(Note 7).................................... 240°C
ESD Rating (Note 8)
Human Body Model: ............................... 2 kV
Machine Model:  .................................200V


Description

The LP3931 is a RGB LED driver with high current boost DC-DC converter designed for portable wireless applications. It contains 2 sets of RGB LED drivers that are PWMdriven with programmable color, intensity and blinking patterns. They additionally feature a FLASH function to support picture taking with camera-enabled cellular phones.

An efficient magnetic boost DC/DC converter provides the required bias, operating from a single Li-Ion battery. The DC/DC converter output voltage is user programmable for adapting to different LED types and for efficiency optimization.

All functions are software controllable through the SPI interface and internal registers.




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