MAXM17543_V01 datasheet(2/20 Pages) MAXIM

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IN to PGND (Note 2) .............................................-0.3V to +48V

EN to SGND (Note 2)............................................-0.3V to +48V

VCC.............................................-0.3V to min (VIN + 0.3V, 6.5V)

FB, RESET, SS, CF, MODE,

SYNC, RT to SGND .........................................-0.3V to +6.5V

OUT to PGND (VIN < 25V).........................-0.3V to (VIN + 0.3V)

OUT to PGND (VIN ≥ 25V)....................................-0.3V to +25V

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

BST to PGND........................................................-0.3V to +53V

BST to VCC ...........................................................-0.3V to +48V

BST to LX.............................................................-0.3V to +6.5V

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

Junction Temperature......................................................+125°C

Storage Temperature Range.............................-65ºC to +125°C

Lead Temperature (soldering, 10s) .................................+245°C

PACKAGE TYPE: 29 SiP

Package Code

L32915+1

Outline Number

21-0879

Land Pattern Number

90-0459

THERMAL RESISTANCE, FOUR-LAYER BOARD

Junction to Ambient (θJA)

30.8°C/W

(VIN = VEN = 24V, RRT = 40.2kΩ (500kHz) to SGND, VPGND = VMODE = VSYNC = VSGND = 0V, VCC = LX = SS = RESET = OUT =

open, VBST to VLX = 5V, VFB = 1V, TA = TJ = -40ºC to +125ºC, unless otherwise noted. Typical values are at TA = +25°C. All voltages

are referenced to SGND, unless otherwise noted.) (Note 4)

Note 1: SGND and PGND are internally connected.

Note 2: See Pin Description for the connection of the backside exposed pad.

Note 3: Data taken using Maxim's evaluation kit, MAXM17543EVKIT#.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT SUPPLY (VIN)

IN Input Voltage Range

VIN

4.5

Input Shutdown Current

IIN_SH

VEN = 0V

10.5

μA

Input Quiescent Current

IQ_PFM_HIB MODE = RT = open

125

μA

IQ_DCM

MODE = VCC

1.16

1.8

IQ_PWM

Normal switching mode, no load

9.5

Absolute Maximum Ratings (Notes 1, 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.

Electrical Characteristics

For the latest package outline information and land patterns (footprints), go to

www.maximintegrated.com/packages. Note that a “+”,

“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.

Package Information

www.maximintegrated.com

Maxim Integrated │ 2

MAXM17543

4.5V to 42V, 2.5A High-Efficiency, DC-DC Step-Down

Power Module with Integrated Inductor

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