LM3535 datasheet(3/26 Pages) NSC

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Absolute Maximum Ratings (Note 1, Note

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

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

Dxx Pin Voltages

-0.3V to

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 (

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

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%)

26.3

(+5.2%)

(%)

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%)

26.3

(+5.2%)

(%)

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%)

26.0

(+4.0%)

(%)

Output Current Regulation

IDC

2.7V

≤ V

IN ≤ 5.5V

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

23.8

(-4.8%)

26.8

(+7.2%)

(%)

Output Current Regulation

GroupA, GroupB, and GroupC

Enabled

3.2V

≤ V

IN ≤ 5.5V

LED = 3.6V

DxA

DxB

DxC

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

DxTH

Dxx 1x to 3/2x Gain Transition

Threshold

DxA and/or VDxB Falling

130

Current sink Headroom Voltage

Requirement

(Note 11)

Dxx = 95% ×IDxx (nom.)

Dxx (nom) = 25mA)

100

OUT

Open-Loop Charge Pump Output

Resistance

Gain = 3/2

2.4

Ω

Gain = 1

0.5

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