LT3501EFE datasheet(2/28 Pages) LINER

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LT3501

3501fb

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

VIN1/2, SHDN, PG1/2 ...................................... 25V/–0.3V

SW1/2....................................................................VIN1/2

BST1/2 ........................................................... 35V/–0.3V

BST1/2 Pins Above SW1/2........................................25V

IND1/2 .....................................................................±5A

VOUT1/2........................................................ VIN1/2/–0.3V

FB1/2, SS1/2, RT/SYNC............................................5.5V

VC1/2 ......................................................................±1mA

Operating Junction Temperature Range

LT3501EFE (Notes 2, 8) ..................... –40°C to 125°C

LT3501IFE (Notes 2, 8) ...................... –40°C to 125°C

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

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

(Note 1)

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TJ = 25°C. VVIN1/2 = 15V, VBST1/2 = open, VRT/SYNC = 2V, VVOUT1/2 = open,

unless otherwise speciﬁed.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SHDN Threshold

VOUT1/2 = 0V, RT/SYNC = 133k

●

1.23

1.28

1.37

SHDN Input Current

VSHDN = 1.375V

VSHDN = 1.225V

µA

Minimum Input Voltage Ch 1 (Note 3)

VFB1/2 = 0V, VVOUT1/2 = 0V, VIND1/2 = 0V, RT/SYNC = 133k

2.8

Minimum Input Voltage Ch 2

VFB1/2 = 0V, VVOUT1/2 = 0V, VIND1/2 = 0V

2.8

Supply Shutdown Current Ch 1

VSHDN = 0V

●

930

µA

Supply Shutdown Current Ch 2

VSHDN = 0V

µA

Supply Quiescent Current Ch 1

VFB1/2 = 0.9V

3.5

Supply Quiescent Current Ch 2

VFB1/2 = 0.9V

200

500

µA

Feedback Voltage Ch 1/2

VVC1/2 = 1V

●

0.784

0.8

0.816

Feedback Voltage Line Regulation

VVIN1/2 = 3V to 25V

●

–1

Feedback Voltage Offset Ch 1 to Ch 2

VVC1/2 = 1V

●

–16

Feedback Bias Current Ch 1/2

VFB1/2 = 0.8V, VVC1/2 = 1V

●

–250

250

Error Ampliﬁer gm Ch 1/2

VVC1/2 = 1V, IVC1/2 = ±5µA

●

150

275

450

µmho

Error Ampliﬁer Gain Ch 1/2

1000

V/V

Error Ampliﬁer to Switch Gain Ch 1/2

3.3

A/V

FE PACKAGE

20-LEAD PLASTIC TSSOP

TOP VIEW

VIN1

SW1

IND1

VOUT1

PG1

PG2

VOUT2

IND2

SW2

VIN2

BST1

SS/TRACK1

VC1

FB1

RT/SYNC

SHDN

FB2

VC2

SS/TRACK2

BST2

TJMAX = 125°C, θJA = 45°C/W, θJC(PAD) = 10°C/W

EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB

ORDER PART NUMBER

LT3501EFE

LT3501IFE

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.

PACKAGE/ORDER INFORMATION

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