MAX5090ASLASHBSLASHC datasheet(2/17 Pages) MAXIM

2 / 17 page

(Voltages referenced to PGND, unless otherwise specified.)

VIN, DRAIN............................................................-0.3V to +80V

SGND, PGND.......................................................-0.3V to +0.3V

LX ...............................................................-0.8V to (VIN + 0.3V)

BST..............................................................-0.3V to (VIN + 10V)

BST to LX..............................................................-0.3V to +10V

ON/OFF......................................................-0.3V to (VIN + 0.3V)

VD, SYNC .............................................................-0.3V to +12V

SS.............................................................................. -0.3 to +4V

MAX5090A/MAX5090B .....................................-0.3V to +15V

MAX5090C ................ 1mA (internally clamped to +2V, -0.3V)

VOUT Short-Circuit Duration......................................Continuous

VD Short-Circuit Duration..........................................Continuous

Continuous Power Dissipation (TA = +70°C)*

16-Pin TQFN (derate 33.3mW/°C above +70°C) ........2.667W

Operating Junction Temperature Range ...... -40°C to +125°C

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

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

Lead Temperature (soldering, 10s) .............................+300°C

*As per JEDEC 51 Standard Multilayer Board.

(VIN = +12V, VON/OFF = +12V, VSYNC = 0V, IOUT = 0, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at

TA = +25°C. See the Typical Operating Circuit.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

VIN

6.5

76.0

Undervoltage Lockout

UVLO

VIN rising

5.70

6.17

6.45

UVLO Hysteresis

UVLOHYS

0.5

Output Voltage

VOUT

MAX5090A VIN = 6.5V to 76V, IOUT = 0 to 2A

3.20

3.3

3.39

MAX5090B VIN = 7.5V to 76V, IOUT = 0 to 2A

4.85

5.0

5.15

MAX5090B VIN = 7V to 76V, IOUT = 0 to 1A

4.85

5.0

5.15

Output Voltage Range

VOUT

MAX5090C only

1.265

11.000

Feedback Voltage

VFB

MAX5090C, VIN = 6.5V to 76V

1.191

1.228

1.265

Efficiency

MAX5090A VIN = 12V, IOUT = 1A

MAX5090B VIN = 12V, IOUT = 1A

MAX5090C VIN = 12V, VOUT = 5V, IOUT = 1A

Quiescent Supply Current

(Note 2)

MAX5090A VIN = 6.5V to 28V

310

550

µA

MAX5090B VIN = 7V to 28V

310

550

MAX5090C VIN = 6.5V to 28V

310

550

Quiescent Supply Current

(Note 2)

MAX5090A VIN = 6.5V to 40V

310

570

µA

MAX5090B VIN = 7V to 40V

310

570

MAX5090C VIN = 6.5V to 40V

310

570

Quiescent Supply Current

(Note 2)

MAX5090A VIN = 6.5V to 76V

310

650

µA

MAX5090B VIN = 7V to 76V

310

650

MAX5090C VIN = 6.5V to 76V

310

650

Shutdown Current

ISHDN

VON/OFF = 0V, VIN = 14V

µA

SOFT-START

Default Internal Soft-Start

Period

CSS = 0

700

µs

Soft-Start Charge Current

ISS

4.5

16.0

µA

Soft-Start ReferenceVoltage

VSS(REF)

1.23

1.46

1.65

MAX5090A/B/C

2A, 76V, High-Efficiency MAXPower

Step-Down DC-DC Converters

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Absolute Maximum Ratings

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.

Electrical Characteristics

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