LTC4449

2

4449fa

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

Supply Voltage

BOOST – TS............................................. –0.3V to 7V

BOOST Voltage .......................................... –0.3V to 42V

TS ................................................................. –5V to 38V

IN Voltage .................................................... –0.3V to 7V

Driver Output TG (with Respect to TS)......... –0.3V to 7V

Driver Output BG.......................................... –0.3V to 7V

Operating Junction Temperature Range

(Notes 2, 3)............................................–40°C to 125°C

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

(Note 1)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Range

3

6.5

V

DC Supply Current

IN = Floating

730

900

μA

UVLO

Undervoltage Lockout Threshold

Hysteresis

l

l

2.5

2.4

2.75

2.65

100

3

2.9

V

V

mV

Operating Range

4

6.5

V

DC Supply Current

IN = Floating

300

400

μA

UVLO

Undervoltage Lockout Threshold

Hysteresis

l

l

2.75

2.60

3.20

3.04

160

3.65

3.50

V

V

mV

DC Supply Current

IN = Floating

300

400

μA

The

PIN CONFIGURATION

TOP VIEW

BOOST

IN

TG

TS

BG

GND

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

LTC4449EDCB#PBF

LTC4449EDCB#TRPBF

LFKC

8-Lead (2mm × 3mm) Plastic DFN

–40°C to 125°C

LTC4449IDCB#PBF

LTC4449IDCB#TRPBF

LFKC

8-Lead (2mm × 3mm) Plastic DFN

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container.

Consult LTC Marketing for information on lead based finish parts.