MAX1946 datasheet(4/13 Pages) MAXIM

Part #	MAX1946

Description	Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN

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Manufacturer	MAXIM [Maxim Integrated Products]

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Single USB Switch with Autoreset and

Fault Blanking in Tiny TDFN

4

_______________________________________________________________________________________

Note 1: All parts are 100% tested at TA = +25

°C. Limits over the operating temperature range are guaranteed by design.

Note 2: Short-circuit detect threshold is the output voltage at which the device transitions from short-circuit current limit to continuous

current limit.

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 5V, CIN = 0.1µF, COUT = 1µF, TA = -40°C to +85°C, unless otherwise noted.) (Note1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Turn-Off Delay

tOFF

ROUT = 10

Ω, time from ON to 90% of VOUT,

does not include fall time

2ms

VIN = 2.7V to 4V

1.6

V

ON, SEL Input High Level

VIH

VIN = 4V to 5.5V

2

V

VIN = 2.7V to 4V

0.6

V

ON, SEL Input Low Level

VIL

VIN = 4V to 5.5V

0.8

V

ON, SEL Input Leakage Current

VON, VSEL = 0 or VIN

-1

+1

µA

FAULT Output Low Voltage

VOL

ISINK = 1mA, VIN = 2.7V

0.5

V

OUT Output Current Autoreset

Mode

In latched off state, VOUT = 0

10

45

mA

OUT Autoreset Threshold

In latched off state, VOUT rising

0.4

0.6

V

OUT Autoreset Blanking Time

In latched off state, VOUT > 0.5V

10

35

ms

QUIESCENT SUPPLY CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

10

20

30

40

50

0

5.5

VSEL = VON = GND

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

33

36

39

42

45

30

-40

85

VSEL = VON = GND

VIN = 5V

VIN = 5.5V

VIN = 2.7V

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

-15

10

2.7

2.8

2.9

3.0

3.1

3.2

3.3

3.4

2.6

-40

85

ON = GND, VSEL = 5V

Typical Operating Characteristics

(Circuit of Figure 2, VIN = 5V, CIN = 0.1µF, COUT = 1µF, ON = SEL, TA = +25°C, unless otherwise noted.)

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