LTM4614IV#PBF【PDF 2/20 页】IC UMODULE DC/DC DUAL 4A 144LGA

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LTM4614

ABSOLUTE MAXIMUM RATINGS

(Note 1)

PIN CONFIGURATION

(See Pin Functions, Pin Configuration Table)

FB1

V IN1 , V IN2 , PGOOD1, PGOOD2...................... –0.3V to 6V

COMP1, COMP2, RUN/SS1, RUN/SS2

FB1, FB2,TRACK1, TRACK2 ......................... –0.3V to V IN

SW1, SW2, V OUT1 , V OUT2 .............. –0.3V to (V IN + 0.3V)

Internal Operating Temperature Range

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

Storage Temperature Range .................. –55°C to 125°C

Body Temperature, Solder Reflow ......................... 245°C

V IN1

SW1

RUN/SS1

M

L

K

J

H

G

PGOOD1

TRACK1 COMP1

TOP VIEW

GND1

V OUT1

F

V IN2

SW2

E

D

C

B

A

GND2

V OUT2

1

2

3

4

5

6

7

8

9

10

11

12

RUN/SS2

PGOOD2

TRACK2

COMP2

FB2

LGA PACKAGE

144-LEAD (15mm × 15mm × 2.82mm)

T JMAX = 125°C, θ JCbottom = 2-3°C/W, θ JA = 15°C/W, θ JCtop = 25°C/W, θ Values Determined

Using a 4-Layer 95mm × 76mm PCB, Weight = 1.7g

ORDER INFORMATION

LEAD FREE FINISH

LTM4614EV#PBF

LTM4614IV#PBF

TRAY

LTM4614EV#PBF

LTM4614IV#PBF

PART MARKING*

LTM4614V

LTM4614V

PACKAGE DESCRIPTION

144-Lead (15mm × 15mm × 2.82mm) LGA

144-Lead (15mm × 15mm × 2.82mm) LGA

TEMPERATURE RANGE (Note 2)

–40°C to 125°C

–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.

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

This product is only offered in trays. For more information go to: http://www.linear.com/packaging/

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal

operating temperature range (Note 2), otherwise specifications are at T A = 25°C. V IN = 5V unless otherwise noted. Refer to Figure 1.

Specified as each channel (Note 5).

SYMBOL

V IN(DC)

PARAMETER

Input DC Voltage

CONDITIONS

l

MIN

2.375

TYP

MAX

5.5

UNITS

V

V OUT(DC)

V IN(UVLO)

Output Voltage

Undervoltage Lockout Threshold

C IN = 22μF, C OUT = 100μF, R FB = 5.76k

V IN = 2.375V to 5.5V, I OUT = 0A to 4A (Note 4)

0°C ≤ T J ≤ 125°C

I OUT = 0A

l

1.460

1.45

1.6

1.49

1.49

2

1.508

1.512

2.3

V

V

V

I INRUSH(VIN)

Input Inrush Current at Start-Up

I OUT = 0A, C IN = 22μF, C OUT = 100μF, V OUT = 1.5V

V IN = 5.5V

0.35

A

I Q(VIN)

Input Supply Bias Current

V IN = 2.375V, V OUT = 1.5V, Switching Continuous

V IN = 5.5V, V OUT = 1.5V, Switching Continuous

Shutdown, RUN = 0, V IN = 5V

20

35

7

12

mA

mA

μA

4614fb

2

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