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LP3933

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` 4 constant current LED drivers with pro...

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SeekIC No. : 004398858 Detail

LP3933: 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 patte...

LP3933 Data Sheet

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Part Number:
LP3933
Supply Ability:
5000

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  • 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
` 4 constant current LED drivers with programmable 8-bit adjustment (0 . 25 mA/LED)
` 2 constant current LED drivers with programmable 8-bit adjustment (0 . 25 mA/LED)
`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 32-pin thin CSP laminate package


Pinout

Connection Diagram


Specifications

V (SW, FB, WLED1-4, CLED1-2,
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 (TJ-MAX) .....................125°C
Storage Temperature Range   ...............−65°C to +150°C
Maximum Lead Temperature
(Reflow soldering, 3 times)
(Note 7)  ................................260°C


Description

The LP3933 is a complete lighting management system designed for portable wireless applications. It contains a boost DC/DC converter, 4 white-LED drivers to drive the main LCD panel backlight, 2 white-LED drivers for the sub- LCD panel and two sets of RGB/FLASH LED drivers.

Both backlight drivers have 8-bit constant current drivers that are separately adjustable and matched to 0.5% (typ.). The RGB LED drivers are PWM-driven with programmable color, intensity and blinking patterns. In addition, they feature a FLASH function to support picture taking with cameraenabled cellular phones.

An efficient magnetic boost DC/DC converter provides the required bias for LEDs, operating from a single Li-Ion battery. The DC/DC converter output voltage is user programmable from 4.1V to 5.3V for adapting to different LED types and for efficiency optimization. All functions are software controllable through a SPI interface and 19 internal registers.




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