LT3486 datasheet(2/20 Pages) LINER

Part #	LT3486

Description	Dual 1.3A White LED Step-Up Converters with Wide Dimming

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3486

2

3486f

16

15

14

13

12

11

10

9

17

DHC PACKAGE

16-LEAD (5mm

× 3mm) PLASTIC DFN

EXPOSED PAD (PIN 17) IS GND

MUST BE SOLDERED TO PCB

1

2

3

4

5

6

7

8

SW2

REF

OVP2

SHDN

VC2

FB2

CTRL2

PWM2

SW1

VIN

OVP1

RT

VC1

FB1

CTRL1

PWM1

Input Voltage (VIN) ...................................................25V

⎯S⎯H⎯D⎯N Voltage..........................................................25V

SW1, SW2 Voltages .................................................40V

OVP1, OVP2 Voltages...............................................40V

CTRL1, CTRL2 Voltages ...........................................10V

PWM1, PWM2 Voltages ...........................................10V

FB1, FB2 Voltages.....................................................10V

ORDER PART

NUMBER

DHC PART

MARKING

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges.

(Note 1)

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3V, VCTRL1 = 3V, VCTRL2 = 3V, VPWM1 = 3V, VPWM2 = 3V,

VSHDN = 3V, unless otherwise noted.

Operating Temperature Range (Note 2) ...– 40°C to 85°C

Storage Temperature Range

DFN ...................................................– 65°C to 125°C

TSSOP ............................................... –65°C to 150°C

Maximum Junction Temperature .......................... 125°C

Lead Temperature (Soldering, 10sec, TSSOP) ...... 300°C

ORDER PART

NUMBER

FE PART

MARKING

3486EFE

LT3486EFE

SW2

REF

OVP2

SHDN

VC2

FB2

CTRL2

PWM2

SW1

VIN

OVP1

RT

VC1

FB1

CTRL1

PWM1

FE PACKAGE

16-LEAD PLASTIC TSSOP

EXPOSED PAD IS GND (PIN 17)

MUST BE SOLDERED TO PCB

1

2

3

4

5

6

7

8

TOP VIEW

16

15

14

13

12

11

10

9

17

TJMAX = 125°C, θJA = 43°C/W, θJC = 4°C/W

TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

LT3486EDHC

3486

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operating Voltage

2.5

V

Maximum Operating Voltage

24

V

Feedback Voltage (FB1, FB2)

●

194

200

206

mV

Offset between FB1 and FB2

VOS = |FB1-FB2|

0

3

6

mV

Feedback Pin Bias Current (FB1, FB2)

VFB1 = VFB2 = 0.2V (Note 3)

10

45

100

nA

Quiescent Current

VFB1 = VFB2 = 1V

9

14

mA

⎯S⎯H⎯D⎯N = 0V, CTRL1 = CTRL2 = 0V

0.1

1

µA

Switching Frequency

RT = 53.6k

0.75

1

1.25

MHz

Oscillator Frequency Range

(Note 4)

200

2000

kHz

Nominal RT Pin Voltage

RT = 53.6k

0.54

V

FOR ATIO

PACKAGE/ORDER I

ELECTRICAL CHARACTERISTICS

ABSOLUTE

AXI U

RATI GS

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