LTM8040

2

8040p

ABSOLUTE MAXIMUM RATINGS

BIAS..........................................................................25V

LEDA.........................................................................15V

PWM .........................................................................10V

ADJ .............................................................................6V

SHDN........................................................................36V

BIAS Current ...............................................................1A

Internal Operating Temperature (Note 2).... –40 to 125°C

Storage Temperature Range....................... –45 to 125°C

(Note 1)

PIN CONFIGURATION

LEAD FREE FINISH

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE (NOTE 3)

LTM8040EV#PBF

LTM8040V

60-Lead 15mm × 9mm LGA Package

0°C to 125°C

LTM8040IV#PBF

LTM8040V

60-Lead 15mm × 9mm LGA Package

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Consult LTC Marketing for information on non-standard lead based finish parts.

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

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

l

3.5

4

V

Input Quiescent Current

Not Switching

2.6

4

mA

Shutdown Current

SHDN =0.3V, BIAS = 0V, LEDA = 0V

0.01

2

μA

LEDA Current

ADJ open

l

l

0.98

0.965

0.49

0.481

1

0.5

1.02

1.035

0.51

0.525

A

A

A

A

ADJ Bias Current

ADJ = 0V, Current flows out of pin

24.5

μA

ADJ Pull-up Resistor

5

5.11

5.22

kΩ

Switching Frequency

RT open

470

500

530

kHz

SHDN Threshold

2.60

1

V

V

PWM Threshold

0.4

1.2

V

V

The

unless otherwise noted (Note 3).

ORDER INFORMATION

BANK 3

LEDA

BANK 1

GND

BANK 2

PWM

SHDN

ADJ

RT

BIAS

GND

LPWR

60 Lead (15mm × 9mm × 2.82mm)