LM3535 datasheet(3/26 Pages) NSC

部件名	LM3535

功能描述	Multi-Display LED Driver with Ambient Light Sensing and Dynamic Backlight Control Compatibility

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制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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3 / 26 page

Absolute Maximum Ratings (Note 1, Note

2)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

V

IN pin voltage

-0.3V to 6.0V

SCL, SDIO, HWEN, PWM pin

voltages

-0.3V to (V

IN+0.3V)

w/ 6.0V max

I

Dxx Pin Voltages

-0.3V to

(V

VOUT+0.3V)

w/ 6.0V max

Continuous Power Dissipation

(Note 3)

Internally Limited

Junction Temperature (T

J-MAX)

150°C

Storage Temperature Range

-65°C to +150° C

Maximum Lead Temperature

(Soldering)

(Note 4)

ESD Rating(Note 5)

Human Body Model

2.0kV

Operating Rating

(Note 1, Note 2)

Input Voltage Range

2.7V to 5.5V

LED Voltage Range

2.0V to 4.0V

Junction Temperature (T

J) Range

-30°C to +110°C

Ambient Temperature (T

A) Range

(Note 6)

-30°C to +85°C

Thermal Properties

Junction-to-Ambient Thermal

Resistance (

θ

JA),

TMD20 Package

(Note 7)

40°C/W

Electrical Characteristics (Note 2, Note 8)

Limits in standard typeface are for T

A = 25°C, and limits in boldface type apply over the full operating temperature range (-30°C to

+85°C). Unless otherwise specified: V

IN = 3.6V; VHWEN = VIN; VPWM = 0V;VDxA = VDxB = VDxC = 0.4V; GroupA = GroupB = GroupC

= Fullscale Current; ENxA, ENxB, ENxC Bits = “1”; 53A, 62A Bits = "0"; C1 = C2 = C

IN= COUT= 1.0µF. (Note 9)

Symbol

Parameter

Condition

Min

Typ

Max

Units

I

Dxx

Output Current Regulation

GroupA

2.7V

≤ V

IN ≤ 5.5V

EN1A to EN4A = '1', 53A = 62A = '0'', EN53

= EN62 = ENxB = ENxC = '0'

4 LEDs in GroupA

23.6

(-5.6%)

25

26.3

(+5.2%)

mA

(%)

2.7V

≤ V

IN ≤ 5.5V

EN1A to EN4A = EN53 = EN62 = '1', 53A =

62A = '1'', ENxB = ENxC = '0'

6 LEDs in GroupA

23.2

(-7.2%)

25

26.3

(+5.2%)

mA

(%)

Output Current Regulation

GroupB

2.7V

≤ V

IN ≤ 5.5V

EN1B = EN53 = EN62 = '1', 53A = 62A = '0',

ENxA = ENC = '0'

3 LEDs in GroupB

23.3

(-6.8%)

25

26.0

(+4.0%)

mA

(%)

Output Current Regulation

IDC

2.7V

≤ V

IN ≤ 5.5V

ENC = '1', ENxA = ENxB = '0'

23.8

(-4.8%)

25

26.8

(+7.2%)

mA

(%)

Output Current Regulation

GroupA, GroupB, and GroupC

Enabled

3.2V

≤ V

IN ≤ 5.5V

V

LED = 3.6V

25

DxA

mA

25

DxB

25

DxC

I

Dxx-

MATCH

LED Current Matching(Note 10)

2.7V

≤ V

IN ≤ 5.5V

GroupA (4 LEDs)

0.25

2.40

%

GroupA (6 LEDs)

0.55

2.78

GroupB (3 LEDs)

0.25

2.41

V

DxTH

V

Dxx 1x to 3/2x Gain Transition

Threshold

V

DxA and/or VDxB Falling

130

mV

V

HR

Current sink Headroom Voltage

Requirement

(Note 11)

I

Dxx = 95% ×IDxx (nom.)

(I

Dxx (nom) = 25mA)

100

mV

R

OUT

Open-Loop Charge Pump Output

Resistance

Gain = 3/2

2.4

Ω

Gain = 1

0.5

3

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