MAX8649 datasheet(2/31 Pages) MAXIM

Part #	MAX8649

Description	1.8A Step-Down Regulator with Differential Remote Sense in 2mm x 2mm WLP

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Manufacturer	MAXIM [Maxim Integrated Products]

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1.8A Step-Down Regulator with Differential

Remote Sense in 2mm x 2mm WLP

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN1 = VIN2 = 3.6V, VAGND = VPGND = 0V, VDD = 1.8V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at

TA = +25°C.) (Note 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

IN1, IN2 to AGND ..................................................-0.3V to +6.0V

VDD to AGND.........................................................-0.3V to +4.0V

LX, SNS+, VID0, VID1, EN to AGND..........-0.3V to (VIN1 + 0.3V)

SCL, SDA, SYNC to AGND.........................-0.3V to (VDD + 0.3V)

PGND, SNS- to AGND...........................................-0.3V to +0.3V

RMS LX Current ..............................................................1800mA

Continuous Power Dissipation (TA = +70°C)

16-Bump WLP 0.5mm Pitch

(derate 13mW/°C above +70°C) ............................1040mW

Operating Temperature Range ...........................-40°C to +85°C

Junction to Ambient Thermal Resistance (

θJA) (Note 1)..76°C/W

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Bump Temperature (soldering, reflow) ............................+260°C

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IN1, IN2 Operating Range

2.5

5.5

V

VDD Operating Range

1.8

3.6

V

VDD Undervoltage Lockout

(UVLO) Threshold

VDD falling

0.54

0.865

1.35

V

VDD UVLO Hysteresis

50

mV

IN_ Undervoltage Lockout

(UVLO) Threshold

VIN falling

2.10

2.15

2.20

V

IN_ UVLO Hysteresis

70

mV

TA = +25°C

0.01

1

VDD Shutdown Supply Current

VIN1 = VIN2 = 5.5V,

EN = VDD = AGND

TA = +85°C

0.01

µA

TA = +25°C

0.25

1

IN1, IN2 Shutdown Supply

Current

VIN1 = VIN2 = 5.5V,

EN = VDD = AGND

TA = +85°C

0.25

µA

TA = +25°C

0.35

1

IN1, IN2 Standby Supply Current

VIN1 = VIN2 = 5.5V, SCL = SDA =

VDD, EN = AGND, I

2C ready

TA = +85°C

0.35

µA

TA = +25°C

0.02

1

VDD Standby Supply Current

VIN1 = VIN2 = VDD = 3.6V,

SCL = SDA = VDD, EN = AGND,

I

2C ready

TA = +85°C

0.02

µA

LOGIC INTERFACE

EN, VID0, VID1

1.4

Logic Input High Voltage (VIH)

VIN1 = VIN2 = 2.5V to 5.5V,

VDD = 1.8V to 3.6V

SYNC, SCL, SDA

0.7 x VDD

V

EN, VID0, VID1

0.4

Logic Input Low Voltage (VIL)

VIN1 = VIN2 = 2.5V to 5.5V,

VDD = 1.8V to 3.6V

SYNC, SCL, SDA

0.3 x VDD

V

TA = +25°C

-1

0.01

+1

SDA, SCL, SYNC Logic Input

Current

VIL = 0V or VIH = 3.6V,

EN = AGND

TA = +85°C

0.01

µA

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

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