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LP3936

Features: `High Efficiency 250 mA Magnetic Boost DC-DC Converter with Programmable Output Voltage`PWM controlled RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking` FLASH function with 3 drivers, each up to 120 mA current`4 constant current White LED drivers with ...

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SeekIC No. : 004398860 Detail

LP3936: Features: `High Efficiency 250 mA Magnetic Boost DC-DC Converter with Programmable Output Voltage`PWM controlled RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking`...

LP3936 Data Sheet

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Part Number:
LP3936
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 250 mA Magnetic Boost DC-DC Converter with Programmable Output Voltage
`PWM controlled RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking
` FLASH function with 3 drivers, each up to 120 mA current
`4 constant current White LED drivers with programmable 8-bit adjustment (0 . 25 mA/LED)
` 2 constant current White LED drivers with programmable 8-bit adjustment (0 . 25 mA/LED)
` 8-bit ADC for ambient light sensor with averaging
` Combined MicroWire/SPI and I2C compatible serial interface
` Low current Standby mode (software controlled)
`Low voltage digital interface down to 1.8V
` Space efficient 32-pin thin CSP laminate package




Application

·Cellular Phones
· PDAs




Pinout

Connection Diagram




Specifications

VDD1, VDD2, VDD_IO, V(OUT, FB) ..........................-0.3V to 6.0V
Voltage on Logic Pins............................. -0.3V to VDD_IO +
.......................................0.3V, with 6.0V max
Voltage on LED Output Pins..........................-0.3V to V(FB) +
.......................................0.3V, with 6.0V max
Voltage on All Other Pins ...........................-0.3V to VDD1,2 +
.......................................0.3V, with 6.0V max
I (ROUT, GOUT, BOUT) .................................150 mA
I (VREF) ..........................................10 A
Continuous Power Dissipation (Note 3) Internally Limited
Junction Temperature (TJ-MAX) .............................125°C
Storage Temperature Range ........................−65°C to +150°C
Maximum Lead Temperature .............................. 260°C
(Reflow soldering, 3 times) (Note 4)
ESD Rating (Note 5)
Human Body Model: ....................................2 kV
Machine Model: ......................................200V

Regulated LEDs 6
LED Configuration Parallel
Current Matching 0.50%
Boost Type Inductive
Switching Frequency 1000 kHz
Switching Type PWM
Total LED Current 250 mA
Efficiency (peak) 90 %
PowerWise Technology Programmable RGB Driver
Boost Voltage Regulated
Supply Current 1 mA
Input Min Voltage 3 Volt
Input Max Voltage 6 Volt
OutputMax Voltage 5.3 Volt
PWM BrightCtrl Yes
Analog-V BrightCtrl No
Ambient Light Compensation Yes
RGB-LED Yes
Temperature Min -40 deg C
Temperature Max 85 deg C
RegType Lighting Management Unit
PowerWise Yes
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Description

LP3936 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 sub-LCD panel and 1 set of RGB LED drivers.

Both WLED groups have 8-bit programmable constant current drivers that are separately adjustable and matched to 1% (typ.). For efficient backlighting the backlight intensity can be adjusted using the 8-bit ADC with ambient light detection circuit.

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 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 an I2C and MicroWire/SPI compatible interface and 16 internal registers.






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