LTM4642 datasheet(2/32 Pages) LINER

2 / 32 page

LTM4642

4642fb

For more information www.linear.com/LTM4642

pin conFiguraTion

absoluTe MaxiMuM raTings

VIN1, VIN2, SW1, SW2, CPWR .................... –0.3V to 22V

INTVCC, DRVCC, PGOOD1,2, RUN1,2, EXTVCC,

VFB1, VFB2 (Note 4) ....................–0.3V to INTVCC + 0.3V

COMP1, COMP2 (Note 4).......................... –0.3V to 2.7V

MODE/PLLIN, FREQ, PHASMD,

VRNG1.........................................–0.3V to INTVCC + 0.3V

VOUT1, VOUT2, VOUTS1................................... –0.3V to 6V

VOUTS– .......................................................0.3V to 2.75V

TK/SS1, TK/SS2............................................. 0.3V to 5V

Internal Operating Temperature Range

(Note 2).................................................. –40°C to 125°C

Maximum Reflow Body Temperature.................... 245°C

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

(Note 1)

VOUT2

GND

SW2

RUN2

PHASMD

COMP2 CLKOUT

RUN1

SW1

COMP1 FREQ

SGND

VOUTS–

VOUT1

MODE/PLLIN

CPWR

PGOOD2

TRACK/SS2

TRACK/SS1

GND

VIN2

VFB2

VFB1

PGOOD1

DRVCC

EXTVCC

INTVCC

VRNG1

VIN1

BGA Package

56-Lead (9mm × 11.25mm × 4.92mm)

VOUTS1

TJMAX = 125°C, θJA = 15°C/W, θJP = 4°C/W

θJA DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS

WEIGHT = 1.2635g

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN(DC)

Input DC Voltage

VIN ≤ 4.5V, Connect CPWR to a Bias > 4.5V

2.375

VOUT1,2(RANGE) Output Voltage Range

VIN = 6V to 20V

0.6

5.5

VOUT1,2(DC)

Output Voltage, Total Variation

with Line and Load

CIN = 10µF ×2, COUT = 47µF Ceramic, 100µF POSCAP,

RSET = 40.2kΩ

VIN = 12V, VOUT = 1.5V, IOUT = 4A

1.4775

1.5

1.5225

Input Specifications

IINRUSH(VIN)

Input Inrush Current at Start-Up

IOUT = 0A, CIN = 10µF, COUT = 47µF Ceramic and 100µF

POSCAP, VOUT = 1.5V

VIN = 12V

0.25

orDer inForMaTion

elecTrical characTerisTics The

denotes the specifications which apply over the full internal

operating temperature range (Note 2), otherwise specifications are at TA = 25°C, VIN = 12V. Per typical application in Figure 27.

Specified as each channel. (Note 3)

PART NUMBER

PAD OR BALL FINISH

PART MARKING*

PACKAGE

TYPE

MSL

RATING

TEMPERATURE RANGE

(SEE NOTE 2)

DEVICE

FINISH CODE

LTM4642EY#PBF

SAC305 (RoHS)

LTM4642Y

BGA

–40°C to 125°C

LTM4642IY#PBF

SAC305 (RoHS)

LTM4642Y

BGA

–40°C to 125°C

LTM4642IY

SnPb (63/37)

LTM4642Y

BGA

–40°C to 125°C

• Consult Marketing for parts specified with wider operating temperature

ranges. *Pad or ball finish code is per IPC/JEDEC J-STD-609.

• Terminal Finish Part Marking: www.linear.com/leadfree

• Recommended LGA and BGA PCB Assembly and Manufacturing

Procedures: www.linear.com/umodule/pcbassembly

• LGA and BGA Package and Tray Drawings: www.linear.com/packaging

http://www.linear.com/product/LTM4642#orderinfo

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