LTC3538

2

3538fb

PIN CONFIGURATION

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

SW1,SW2 Voltage

DC............................................................ –0.3V to 6V

Pulsed < 100ns........................................ –0.3V to 7V

BURST, FB, VC Voltage................................. –0.3V to 6V

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

Maximum Junction Temperature (Note 3)............. 125°C

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

(Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage

●

2.4

5.5

V

Feedback Voltage

(Note 4)

●

0.980

1.00

1.020

V

Feedback Input Current

(Note 4)

1

50

nA

1.5

5

μA

FB = 0.8V

1

1.8

mA

35

60

μA

NMOS Switch Leakage

Switches B and C

0.1

7

μA

PMOS Switch Leakage

Switches A and D

0.1

10

μA

NMOS Switch On-Resistance

Switches B and C

0.17

Ω

PMOS Switch On-Resistance

Switches A and D

0.2

Ω

Input Current Limit

●

1.4

2

A

Reverse Current Limit

0.5

A

Burst Mode Operational Peak Current

0.9

A

Maximum Duty Cycle

Boost (%Switch C On)

Buck (% Switch A On)

Buck (% Switch D On)

●

●

●

70

100

100

88

%

%

%

TOP VIEW

SW1

SW2

FB

VC

GND

BURST

DCB PACKAGE

8-LEAD (2mm × 3mm) PLASTIC DFN

9

3

4

2

1

6

5

7

8

EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3538EDCB#PBF

LTC3538EDCB#TRPBF

LCRB

8-Lead (2mm × 3mm) Plastic DFN

–40°C to 85°C

LEAD BASED FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3538EDCB

LTC3538EDCB#TR

LCRB

8-Lead (2mm × 3mm) Plastic DFN

–40°C to 85°C

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

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/