LT3468_15 datasheet(2/12 Pages) LINER

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LT3468/LT3468-1/LT3468-2

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

SW Voltage ................................................ –0.4V to 50V

CHARGE Voltage ...................................................... 10V

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

Current into DONE Pin .......................................... ±1mA

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

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

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

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

ORDER PART

NUMBER

S5 PART

MARKING

TJMAX = 125°C

θJA = 150°C ON BOARD OVER

GROUND PLANE

θJC = 90°C/W

LTAEC

LTAGQ

LTBCH

LT3468ES5

LT3468ES5-1

LT3468ES5-2

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating

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

are for the LT3468, LT3468-1 and LT3468-2 unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Quiescent Current

Not Switching

VCHARGE = 0V

µA

Input Voltage Range

●

2.5

Switch Current Limit

LT3468 (Note 3)

1.1

1.2

1.3

LT3468-2

0.77

0.87

0.97

LT3468-1

0.45

0.55

0.65

Switch VCESAT

LT3468, ISW = 1A

330

430

LT3468-2, ISW = 650mA

210

280

LT3468-1, ISW = 400mA

150

200

VOUT Comparator Trip Voltage

Measured as VSW – VIN

●

31.5

VOUT Comparator Overdrive

300ns Pulse Width

200

400

DCM Comparator Trip Voltage

Measured as VSW – VIN

●

CHARGE Pin Current

VCHARGE = 3V

µA

VCHARGE = 0V

0.1

µA

Switch Leakage Current

VIN = VSW = 5V, in Shutdown

●

0.01

µA

CHARGE Input Voltage High

●

CHARGE Input Voltage Low

●

0.3

Minimum Charge Pin Low Time

High→Low→High

µs

DONE Output Signal High

100kΩ from VIN to DONE

DONE Output Signal Low

33µA into DONE Pin

100

200

DONE Leakage Current

VDONE = 3V, DONE NPN Off

100

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

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT3468E/LT3468E-1/LT3468E-2 are guaranteed to meet

performance specifications from 0°C to 70°C. Specifications over the

–40°C to 85°C operating temperature range are assured by design,

characterization and correlation with statistical process.

Note 3: Specifications are for static test. Current limit in actual application

will be slightly higher.

5 VIN

4 CHARGE

SW 1

TOP VIEW

S5 PACKAGE

5-LEAD PLASTIC TSOT-23

GND 2

DONE 3

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