LCFX datasheet(2/20 Pages) LINER

Part #	LCFX

Description	Photofl ash Chargers with Adjustable Input Current and IGBT Drivers

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3585-0/LT3585-1

LT3585-2/LT3585-3

2

3585f

VIN Voltage................................................................16V

VBATT Voltage ............................................................16V

SW Voltage ...............................................................60V

SW Pin Negative Current...........................................–1A

CHRG/IADJ Voltage...................................................10V

IGBTPWR Voltage .....................................................10V

IGBTIN Voltage .........................................................10V

IGBTPU Voltage ........................................................10V

IGBTPD Voltage ........................................................10V

DONE Voltage ...........................................................10V

Current Into DONE Pin ............................... 0.2mA/–1mA

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

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

Storage Temperature Range................... –65°C to 125°C

(Note 1)

The

● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = VBAT = VCHRG = 3V unless otherwise noted (Note 2). Speciﬁcations

are for the LT3585-0, LT3585-1, LT3585-2, LT3585-3 unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Quiescent Current

VCHRG = 3V, Not Switching

VCHRG = 0V, In Shutdown

5

0

8

1

mA

µA

VIN Voltage Range

●

2.5

16

V

VBAT Voltage Range

●

1.5

16

V

Switch Current Limit

LT3585-3 (Note 3)

LT3585-0 (Note 3)

LT3585-2 (Note 3)

LT3585-1 (Note 3)

1.55

1.1

0.75

0.45

1.7

1.2

0.85

0.55

1.85

1.3

0.95

0.65

A

Switch VCESAT

LT3585-3, ISW = 1.4A

LT3585-0, ISW = 1A

LT3585-2, ISW = 700mA

LT3585-1, ISW = 400mA

485

330

230

140

mV

VOUT Comparator Trip Voltage

Measured as VSW – VBAT

●

31

30.5

31.5

32

32.5

V

VOUT Comparator Overdrive

300ns Pulse Width

200

400

mV

DCM Comparator Trip Voltage

Measured as VSW – VBAT

80

130

180

mV

CHRG/IADJ Pin Current

VCHRG = 3V

VCHRG = 0V

45

0

70

0.1

µA

Switch Leakage Current

VBAT = VSW = 5V, In Shutdown

●

0.01

1

µA

CHRG/IADJ Minimum Enable Voltage

●

1.1

V

ELECTRICAL CHARACTERISTICS

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

TOP VIEW

11

DDB PACKAGE

10-LEAD (3mm

× 2mm) PLASTIC DFN

IGBTIN

IGBTPWR

GND

VIN

VBAT

IGBTPU

IGBTPD

SW

CHRG/IADJ

DONE

6

8

7

9

10

5

4

2

3

1

TJMAX = 125°C, θJA = 76°C/W

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

ORDER PART NUMBER

DDB PART MARKING

LT3585EDDB-0

LT3585EDDB-1

LT3585EDDB-2

LT3585EDDB-3

LCLK

LCLJ

LCLH

LCFX

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.

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