LTH2 Marking, LT3465 datasheet(4/12 Pages) LINER

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LT3465/LT3465A

3465af

TYPICAL PERFOR A CE CHARACTERISTICS

Quiescent Current (CTRL = 3V)

VIN (V)

0.5

1.0

1.5

2.0

2.5

3.0

510

3465A G10

–50

°C

100

°C

DUTY CYCLE (%)

150

200

250

100

3465A G11

100

300

350

400

–50

°C

100

°C

TEMPERATURE (

°C)

–50

3465A G12

100

20mA

10mA

15mA

LT3465

LT3465A

Switching Current Limit

VIN = 3.6V, 4 LEDs

PI FU CTIO S

VOUT (Pin 1): Output Pin. Connect to output capacitor and

LEDs. Minimize trace between this pin and output capaci-

tor to reduce EMI.

GND (Pin 2): Ground Pin. Connect directly to local ground

plane.

FB (Pin 3): Feedback Pin. Reference voltage is 200mV.

Connect LEDs and a resistor at this pin. LED current is

determined by the resistance and CTRL pin voltage:

When V

LED

CTRL

LED

CTRL

≈>

≈<

200

•

CTRL (Pin 4): Dimming Control and Shutdown Pin. Ground

this pin to shut down the device. When VCTRL is greater

than about 1.8V, full-scale LED current is generated. When

VCTRL is less than 1V, LED current is reduced.

VIN (Pin 5): Input Supply Pin. Must be locally bypassed

with a 1

µF X5R or X7R type ceramic capacitor.

SW (Pin 6): Switch Pin. Connect inductor here.

TEMPERATURE (

°C)

–50

VR = 25

VR = 16

VR = 10

3465A G13

050

100

Schottky Leakage Current

TEMPERATURE (

°C)

–50

190

192

196

198

200

210

204

–10

3465A G09

194

206

208

202

–30

Feedback Voltage

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