MAX4772 datasheet(2/10 Pages) MAXIM

2 / 10 page

200mA/500mA Selectable

Current-Limit Switches

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = +2.0V to +4.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = +3.3V, TA = +25°C.) (Note 1)

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.

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

OUT Short Circuit to GND .................................Internally Limited

Continuous Power Dissipation (TA = +70°C)

6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW

6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW

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

Operating Voltage

VIN

2.0

4.5

Quiescent Current

VON = VIN, switch on

VIN = +3.3V

125

µA

Latch-Off Current (Note 2)

ILATCH

VON = VIN, after an

overcurrent fault (MAX4772)

VIN = +3.3V

µA

Shutdown Current

ISHDN

VON = 0V, SEL = low or floating

0.03

µA

SEL = low, VIN = 3.3V, VOUT = GND

200

320

Forward-Current Limit

SEL = high, VIN = 3.3V, VOUT = GND

500

800

SEL = low

320

Reverse-Current Limit

SEL = high

800

ON Input Leakage

-1

µA

Shutdown Forward Leakage

VON = 0V, VOUT = 0V

0.01

µA

Shutdown Reverse Leakage

VON = 0V, VIN = 2V, VOUT = 4.5V

µA

SEL Pulldown Current

After power-up (VIN > 2V, 0V < VSEL < 0.5V)

100

µA

SEL Input Current

Measured after first low-to-high transition

-1

µA

SEL = low, ILOAD = 100mA

0.45

0.9

On-Resistance (Note 3)

RON

SEL = high, ILOAD = 100mA

0.18

0.36

Ω

VIN = 2V to 3.6V

1.4

ON, SEL Input Logic High

Voltage

VIH

VIN > 3.6V

ON, SEL Input Logic Low Voltage

VIL

0.5

FLAG Output Logic Low Voltage

ISINK = 1mA

0.4

FLAG Output High Leakage

Current

VIN = VFLAG = VON = 4.5V

µA

Thermal Shutdown

150

°C

Thermal-Shutdown Hysteresis

°C

DYNAMIC

Turn-On Time (Note 4)

VON from low to high, IOUT = 10mA,

CL = 0.1µF

120

µs

Turn-Off Time (Note 4)

VON from high to low, IOUT = 10mA,

CL = 0.1µF

100

Blanking Time

tBLANK

Overcurrent fault (Figures 4 and 5)

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