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LT3487

3487f

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

VBAT Voltage............................................................. 16V

SWP, SWN Voltage................................................... 32V

CAP, VPOS .................................................................30V

DN Voltage ............................................................. –32V

RUN/SS Voltage ..........................................................8V

FBP Voltage................................................................ 6V

FBN Voltage ................................................ –0.2V to 6V

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

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

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

ORDER PART NUMBER

DD PART MARKING

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

LBXB

LT3487EDD

(Note 1)

The

● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3.6V, VBAT = 3.6V, unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range

2.3

Quiescent Current

RUN/SS = 3V, Not Switching

RUN/SS = 0V

3.7

5.3

µA

RUN/SS Voltage Threshold (Full Current)

(Note 3)

1.6

RUN/SS Voltage Threshold (Shutdown)

●

100

160

RUN/SS Pin Current

RUN/SS = 0V (Note 4)

1.4

µA

FBP (Positive Channel) Pin Voltage

●

1.19

1.23

1.27

FBN (Negative Channel) Pin Voltage

●

–7

FBP Pin Voltage Line Regulation

0.007

%/V

FBN Pin Voltage Line Regulation

0.001

mV/V

FBP Pin Bias Current

●

24.4

25.6

µA

FBN Pin Bias Current

●

24.4

25.6

µA

FBP Threshold (Percent of Final Value)

to Start Negative Channel

Switching Frequency

1.85

2.15

MHz

Maximum Duty Cycle

●

Positive Channel Switch Current Limit

(Note 5)

●

750

920

Negative Channel Switch Current Limit

(Note 5)

●

900

1090

Positive Channel VCESAT

ISWP = 400mA

280

Negative Channel VCESAT

ISWN = 600mA

340

ELECTRICAL CHARACTERISTICS

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

TOP VIEW

DD PACKAGE

10-LEAD (3mm

× 3mm) PLASTIC DFN

VPOS

FBP

RUN/SS

FBN

VIN

CAP

SWP

VBAT

SWN

θJA = 43°C/W, θJC = 3°C/W

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

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/

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