LT3471

2

3471fb

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

(Note 1)

SW1, SW2 Voltage..................................... –0.4V to 42V

SHDN/SS1, SHDN/SS2 Voltage ............................... 16V

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

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

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

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operating Voltage

2.1

2.4

V

Reference Voltage

l

0.991

0.987

1.000

1.009

1.013

V

V

Reference Voltage Current Limit

(Note 3)

1

1.4

mA

Reference Voltage Load Regulation

0.1

0.2

%/100μA

Reference Voltage Line Regulation

0.03

0.08

%/V

Error Amplifier Offset

±2

±3

mV

FB Pin Bias Current

l

60

100

nA

Quiescent Current

2.5

4

mA

Quiescent Current in Shutdown

0.01

1

μA

Switching Frequency

11.2

1.4

MHz

Maximum Duty Cycle

l

90

86

94

%

%

Minimum Duty Cycle

15

%

Switch Current Limit

At Minimum Duty Cycle

At Maximum Duty Cycle (Note 4)

1.5

0.9

2.05

1.45

2.6

2.0

A

A

150

250

mV

Switch Leakage Current

0.01

1

μA

SHDN/SS Input Voltage High

1.8

V

The

TOP VIEW

11

DD PACKAGE

10-LEAD (3mm × 3mm) PLASTIC DFN

10

9

6

7

8

4

5

3

2

1

SW1

SHDN/SS1

SHDN/SS2

SW2

FB1N

FB1P

FB2P

FB2N

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

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3471EDD#PBF

LT3471EDD#TRPBF

LBHM

10-Lead (3mm × 3mm) Plastic DFN

–40°C to 85°C

LEAD BASED FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3471EDD

LT3471EDD#TR

LBHM

10-Lead (3mm × 3mm) Plastic DFN

–40°C to 85°C

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