LP3361 Datasheet, PDF (1/6 Pages) Lowpower Semiconductor inc – 6-Channel Constant Current White LED Driver

Preliminary Datasheet
LP3361
6-Channel Constant Current White LED Driver
General Description
The LP3361 is a low-dropout bias supply for white LEDs is
a high-performance alternative to the simple ballast
resistors used in conventional white LED designs. It
supports 6 white LEDs with regulated constant current for
uniform intensity. The LP3361 maintains low dropout
current regulators. The LP3361 requires a 45mV dropout
at a 20mA load on each output to match the LED brightness.
The brightness of LEDs can be tuned through a pulse width
modulated signal at the PWM pin,the PWM frequency from
200Hz to 10KHz and the Duty from 0 to 100%.
The LP3361 is available in a TDFN-10 package.
Order Information
LP3361 - □ □ □
F: Pb-Free
Package Type
QV:TDFN-10
Applications
— LCD Panel
— Cellular and Smart mobile phone
— PDA/DSC
— PMP
Features
— 2.7V to 6V Input Voltage
— 20mA maxim sink current
— Dual Panel Driver of WLED
— PWM tuned LED brightness through EN pin
— Soft Start Function
— Built-in Thermal Protection
— IQ<1uA in Shutdown
— TDFN-10 Package
— RoHS Compliant and 100% Lead (Pb)-Free
Typical Application Circuit
VBAT
ON/OFF
LP3361
Main_Panel
3 _VDD1
8 _VDD2
1
LED1
LED2 ⁴
5
LED3
VBAT
2 _EN1
LED4 ⁶
7
EN2
9
LED5
11 _GND
LED6 ¹⁰
Sub_Panel
2.2uF
Marking Information
Please see website.
LP3361 – Ver. 1.0 Datasheet Nov.-2008
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