MAX1946ETA(2003) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX1946ETA
(Rev.:2003)

Single USB Switch with Autoreset and Fault Blanking in Tiny QFN

Maxim Integrated 

Single USB Switch with Autoreset and

Fault Blanking in Tiny QFN

ABSOLUTE MAXIMUM RATINGS

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

FAULT to GND .............................................-0.3V to (VIN + 0.3V)

IN to OUT..................................................................-0.3V to +6V

OUT Continuous Switch Current (internally limited)..............1.3A

FAULT DC Current ..............................................................10mA

Continuous Power Dissipation (TA = +70°C)

Exposed Pad Must be Soldered to PC Board

8-Pin QFN (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

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

(VIN = 5V, CIN = 0.1µF, COUT = 1µF, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Supply Voltage Range

Switch On-Resistance

Standby Supply Current

VIN

RON

VIN = 5, TA = +25°C

VIN = 5V

VIN = 3.3V

Switch disabled

2.7

5.5

V

75

90

110

mΩ

125

3

10

µA

Quiescent Supply Current

OUT Off-Leakage Current

Undervoltage Lockout Threshold

Continuous Load Current

IIN

ILKG

VULVO

Switch enabled, IOUT = 0

Switch disabled, VOUT = 0, TA = +25°C

Switch disabled, VOUT = 0, TA = +85°C

Rising edge, 3% hysteresis

40

60

µA

0.01

1

µA

0.2

2.3

2.5

2.7

V

500

mA

Continuous Current Limit

Short-Circuit Current Limit

Short-Circuit Detect Threshold

ILIM

VIN_ - VOUT = 0.5V

ISC

VOUT = 0 (IOUT pulsing)

(Note 2)

0.74

0.8

1.1

1.2

0.35

1

1.20

1.6

A

APK

ARMS

V

Continuous Current-Limit

Blanking Timeout Period

From continuous current-limit condition to

FAULT asserted

10

20

35

ms

Short-Circuit Blanking Timeout

Period

From short-circuit current-limit condition to

FAULT asserted

7.5

18

35.0

ms

Turn-On Delay

Output Rise Time

Turn-Off Delay

Output Fall Time

Thermal-Shutdown Threshold

tON

ROUT = 10Ω, time from ON to 10% of VOUT,

does not include rise time

0.25

0.6 1.50

ms

tRISE ROUT = 10Ω, from 10% to 90% of VOUT

1.2

ms

tOFF

ROUT = 10Ω, time from ON to 90% of VOUT,

does not include fall time

0.8

2

ms

tFALL

ROUT = 10Ω, from 90% to 10% of VOUT

15oC hysteresis

3

ms

160

°C

2 _______________________________________________________________________________________

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