MAX14523A datasheet(2/10 Pages) MAXIM

2 / 10 page

250mA to 1.5A, Adjustable

Current-Limit Switches

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = +1.7V to +5.5V, RSETI = 94.2k

Ω, CIN = COUT = 1µF, and TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values

are at VIN = +3.3V, 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.

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-turorial.

(All voltages referenced to GND.)

IN, ON, ON, FLAG, OUT, and SETI to GND .............-0.3V to +6V

Current into Any Pin (Except IN, OUT)................................20mA

Out Short Circuit to GND...................................Internally Limited

Continuous Power Dissipation (TA = +70°C) for multilayer board:

8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1952mW

Junction-to-Case Thermal Resistance (

θJC)

(Note 1) ...................................................................8.0°C/W

Junction-to-Ambient Thermal Resistance (

θJA)

(Note 1) .................................................................41.0°C/W

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

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

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY OPERATION

Operating Voltage

VIN

1.7

5.5

Quiescent Current

IOUT = 0A, switch on, VIN = 3.3V

170

300

μA

Latchoff Current

ILATCH

VIN = 3.3V, IOUT = 0A , after an overcurrent

fault (MAX14523B)

μA

Shutdown Forward Current

ISHDN

VON = 0V, VON = VIN, VIN = 5.5V, VOUT = 0V

0.5

μA

Shutdown Reverse Current

IRSHDN

VON = 0V, VON = VIN, VIN = 1.7V, VOUT =

5.5V (current into OUT)

0.01

0.6

μA

INTERNAL FET

Switch-On Resistance

RON

VIN = 3.3V, IOUT lower than ILIM

130

RSETI = 91.78k , VIN - VOUT = 1V

1350

1500

1650

Forward-Current Limit

ILIM

RSETI = 563.12k , VIN - VOUT = 1V

225

250

275

(RSETI +2.48k ) × ILIM Product

ILIM = 250mA to 1500mA,

VIN - VOUT = 1V

127.2

141.4

155.5

Reverse Blocking Current

VOUT > VIN + 140mV, after reverse-current-

limit shutdown

μA

Reverse Blocking Threshold

VOUT - VIN

VOUT - VIN = 300mV, OUT falling until

switch turns on

140

FLAG Assertion Drop Voltage

Threshold

VFA

Increase (VIN - VOUT) drop until

FLAG

asserts, IOUT limiting, VIN = 3.3V

350

ON,

ON INPUT

ON,

ON Input Leakage

ILEAK

VON, VON = VIN or VGND

-1

μA

ON,

ON Input Logic-High Voltage

VIH

1.6

ON,

ON Input Logic-Low Voltage

VIL

0.4

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