LT3498

2

3498f

PACKAGE/ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

CTRL1 and CTRL2 Voltage........................................12V

FB2 Voltage..............................................................2.5V

SW1 and SW2 Voltage ..............................................32V

CAP1 and CAP2 Voltage............................................32V

LED1 Voltage ............................................................32V

Operating Junction Temperature Range ...– 40°C to 85°C

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

Storage Temperature Range...................– 65°C to 150°C

(Notes 1, 2)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operating Voltage

2.5

V

Maximum Operating Voltage

12

V

Supply Current (LED Off, OLED Off)

810

µA

Supply Current (LED On, OLED Off)

1.6

2

mA

Supply Current (LED Off, OLED On)

230

280

µA

Supply Current (LED On, OLED On)

1.65

2.05

mA

●

1.5

V

●

125

mV

●

75

mV

CTRL1, CTRL2 Pin Bias Current

100

nA

LED Driver

●

190

200

210

mV

CAP1, LED1 Pin Bias Current

20

30

µA

2.5

V

Switching Frequency

●

1.8

2.3

2.8

MHz

Maximum Duty Cycle

88

90

%

Switch Current Limit

●

300

425

mA

250

mV

TOP VIEW

13

DDB PACKAGE

12-LEAD (3mm

× 2mm) PLASTIC DFN

LED1

CTRL1

GND1

GND2

CTRL2

FB2

CAP1

SW1

SW2

CAP2

8

7

10

9

11

12

5

6

4

2

3

1

EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB

ORDER PART NUMBER

DDB PART MARKING

LT3498EDDB

LCQF

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/

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