LM3595 datasheet(3/11 Pages) NSC

Part #	LM3595

Description	The LM3595 is a parallel white-LED driver that is capable of driving four white LEDs.

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Manufacturer	NSC [National Semiconductor (TI)]

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Absolute Maximum Ratings (Notes 1,

2)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

V

IN

−0.3V to 6.0V

EN, BR-ON, BRGT

-0.3V to

(V

IN+ 0.3V) w/

6.0V max

Junction Temperature (T

J-MAX-ABS)

150˚C

Continuous Power Dissiation

(Note 3)

Internally Limited

Storage Temperature Range

-65˚C to 150˚C

Lead Temperature

(Soldering, 5 Sec.)

260˚C

ESD Rating (Note 4)

Human-body model

Machine model

2kV

200V

Operating Ratings

(Notes 1, 2)

Input Voltage Range (Note 5)

3.0V to 5.5V

Output Voltage Range (Note 5)

2.0V to 5.5V

Junction Temperature Range

(Note 6)

-40˚C to 105˚C

Ambient Temperature Range

(Note 6)

-40˚C to 85˚C

Thermal Information

Junction-to-Ambient Thermal

Resistance, LLP-10 Package (

θ

JA)

(Note 7)

55˚C/W

Electrical Characteristics

(Notes 2, 8)

Limits in standard typeface and typical values apply for T

J =25

oC. Limits in boldface type apply over the operating junction

temperature range. Unless otherwise specified: V

IN = 5V, VOUTX = 3.6V, RSET = 8.25k

Ω, V(EN) = V

IN, V(BR-ON) = 0V

Symbol

Parameter

Conditions

Min

Typ

Max

Units

I

OUTX

Output Current Regulation

(Note 5)

3.0V

≤ V

IN

≤ 5.5V

2.0V

≤ V

OUTX

≤ (V

IN - 0.7V)

R

SET = 4.99k

Ω

22.54

(-8%)

24.5

26.46

(+8%)

mA

(%)

3.0V

≤ V

IN

≤ 5.5V

2.0V

≤ V

OUTX

≤ (V

IN - 0.42V)

R

SET = 8.25k

Ω

13.80

(-8%)

15.0

16.20

(+8%)

3.0V

≤ V

IN

≤ 5.5V

2.0V

≤ V

OUTX

≤ (V

IN - 0.28V)

R

SET = 12.4k

Ω

9.20

(-8%)

10.0

10.80

(+8%)

I

OUTX-BRGT

Analog Brightness Control

Current Regulation

V(BRGT) = 3.0V, V(BR-ON) = V

IN

13.83

(-6.5%)

14.8

15.77

(+6.5%)

mA

(%)

V(BRGT) = 0V, V(BR-ON) = V

IN

100

250

µA

I

OUT-MATCH

Current Matching Between

Any Two Outputs

0.5

4

%

V

SET

I

SET Pin Voltage

1.147

(-6%)

1.22

1.293

(+6%)

V

(%)

I

OUTX/ISET

Output Current to Current

Set Ratio

95

(-5%)

100

105

(+5%)

V

HR

Current Source Headroom

Voltage (Note 5)

I

OUT =95%xIOUT(nom)

R

SET = 4.99k

Ω (I

OUT(nom) approx. 25mA)

500

690

mV

I

OUT =95%xIOUT(nom)

R

SET = 12.4k

Ω (I

OUT(nom) approx. 10mA)

200

280

I

Q

Quiescent Supply Current

I

OUTX = 0mA, V(BR-ON) = VIN,RSET =

Open

200

300

µA

I

OUTX = 0mA, V(BR-ON) = VIN,RSET =

8.25k

Ω

350

I

SD

Shutdown Supply Current

EN = 0, V(BR-ON) = V

IN

0.03

1

µA

V

EN-IH

EN Input Logic High

3.0V

≤ V

IN

≤ 5.5V

1.2

V

IN

V

EN-IL

EN Input Logic Low

3.0V

≤ V

IN

≤ 5.5V

0

.5

V

BRON-IH

BR-ON Input Logic High

3.0V

≤ V

IN

≤ 5.5V

.65xV

IN

V

IN

V

BRON-IL

BR-ON Input Logic Low

3.0V

≤ V

IN

≤ 5.5V

0

.35xV

IN

V

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