MAX15014 datasheet(2/25 Pages) MAXIM

2 / 25 page

IN_SW, IN_LDO, DRAIN, EN_SYS, EN_SW

to SGND ............................................................-0.3V to +45V

IN_LDO to IN_SW................................................-0.3V to +0.3V

LX to SGND.........................................-0.3V to (VIN_SW + 0.3V)

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

BST to SGND.......................................-0.3V to (VIN_SW + 12V)

BST to LX..............................................................-0.3V to +12V

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

REG, DVREG, SYNC, RESET, CT to SGND .......-0.3V to +12V

FB, COMP_SW, SS to SGND................-0.3V to (VREG + 0.3V)

SET_LDO, LDO_OUT to SGND............................-0.3V to +12V

C+ to PGND

(MAX15015/MAX15016 only)............(VDVREG - 0.3V) to 12V

C- to PGND

(MAX15015/MAX15016 only)........ -0.3V to (VDVREG + 0.3V)

LDO_OUT Output Current................................Internally Limited

Switch DC Current (DRAIN and LX pins combined)

TJ = +125°C .........................................................................1.9A

TJ = +150°C .......................................................................1.25A

RESET Sink Current ............................................................5mA

Continuous Power Dissipation (TA = +70°C)

36-Pin TQFN (derate 26.3mW/°C above +70°C)

Single-Layer Board....................................................2105mW

36-Pin TQFN (derate 35.7mW/°C above +70°C)

Multilayer Board.........................................................2857mW

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

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

Storage Temperature Range............................ -60°C to +150°C

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

(VIN_SW = VIN_LDO = VDRAIN = 14V, VEN_SYS = VEN_SW = 2.4V, VREG = VDVREG, VSYNC = VSET_LDO = VSGND = VPGND = 0V,

CREG = 1μF, CIN_SW = 0.1μF, CIN_LDO = 0.1μF, CLDO_OUT = 10μF, CDRAIN = 0.22μF, TA = TJ = -40°C to +125°C, unless otherwise

noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

System Supply Current (Not

Switching)

ISYS

No load

VFB = 1.3V,

MAX15014/MAX15017

0.7

1.8

VFB = 1.3V,

MAX15015/MAX15016

0.85

1.8

Switching System Supply

Current

ISW

No load

VFB = 0V, MAX15014/

MAX15017

5.6

VFB = 0V, MAX15015/

MAX15016

8.6

LDO Quiescent Current

ILDO

VEN_SYS = 14V,

VEN_SW = 0V

ILDO_OUT = 100µA

µA

ILDO_OUT = 50mA

130

200

System Shutdown Current

ISHDN

VEN_SYS = 0V, VEN_SW = 0V

µA

System Enable Voltage

VEN_SYSH EN_SYS = high, system on

2.4

VEN_SYSL

EN_SYS = low, system off

0.8

System Enable Hysteresis

220

System Enable Input Current

IEN_SYS

VEN_SYS = 2.4V

0.5

µA

VEN_SYS = 14V

0.6

BUCK CONVERTER

Input Voltage Range

VIN_SW

MAX15014/MAX15017

7.5

40.0

MAX15015/MAX15016

4.5

40.0

MAX15014–MAX15017

1A, 4.5V to 40V Input Buck Converters with

50mA Auxiliary LDO Regulators

www.maximintegrated.com

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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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