LP3359 datasheet(2/9 Pages) POWER

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LP3359

LP3359-datasheet

Ver.1.1

Nov.-2005

-2

Functional Pin Description

Pin Number

Pin Name

Pin Function

Vin

Input Voltage

GND

Power Ground.

EN/PWM

Active-High Enable Input – There is no internal pull-down resistor.

Iset

Current Set Input-The resistor value tied between this pin and ground sets the

output current.

5-8

LEDx

Current Source Outputs 1- 4 - Connect directly to LED’s

Function Block Diagram

Fig1.

LP3359 Block Diagram

Absolute Maximum Ratings

VIN ------------------------------------------------------------------------------------------------------------------0.3V to 6V max

EN/PWM-----------------------------------------------------------------------------------------0.3V to (VIN+0.3V) w/ 6 max

Continuous Power Dissipation ---------------------------------------------------------------------- Internally Limited

DFN-8L , 3 ×3,θJA -------------------------------------------------------------------------------------------------------- 50°C/W

TSSOP-8L , θJA ----------------------------------------------------------------------------------------------------------- 70°C/W

Junction Temperature (TJ ) ---------------------------------------------------------------------------------------------150°C

Storage Temperature Range ------------------------------------------------------------------------------ -65°C to 150°C

Lead Temp (Soldering, 5sec) ------------------------------------------------------------------------------------------ 260°C

ESD Rating Human Body Model -----------------------------------------------------------------------------------------2kV

Operating Conditions

Input Voltage (VIN) -------------------------------------------------------------------------------------------------- 3V to 5.5V

Ambient Temperature (TA) ---------------------------------------------------------------------------------- -40°C to 85°C

LP3359 Datasheet(PDF) 2 Page - Lowpower Semiconductor inc