LP3359

LP3359-datasheet

Ver.1.1

Nov.-2005

3

Electrical Characteristics

(Limits in standard typeface and typical values apply for TA=25°C. Limits in boldface type apply over the operating junction temperature

range (-40°C~+85°C). Unless otherwise specified: VIN=5V, VLEDX=3.6V, RSET=7.5k, V(EN/PWM)=VIN.)

Symbol

Description

Conditions

Min

Typ

Max

Units

ILEDx

LED Current

3.0V ≤ VIN ≤ 5.5V 2.0V ≤ VLEDX ≤

(VIN-0.4V) RSET=7.5k

14.3

15.8

17.3

mA

Current Matching Between

Any Two Outputs

±0.3

±1

%

ISET Pin Voltage

1.06

(-8%)

1.18

1.3

(+8%)

V

Output Current to Current

Set Ratio

100

ILED=95% × ILED(nom), RSET= 4.7K

(ILED(nom) approx. 25mA)

320

440

Current Source Headroom

Voltage

ILED=95% × ILED(nom), RSET= 12K

(ILED(nom) approx. 10mA)

130

220

mV

ILED=0mA, RSET=Open

175

285

Quiescent Supply Current

ILED=0mA, RSET=7.5k

325

uA

Shutdown Supply Current

EN/PWM=0

0.01

1

V