TPS2115A-Q1 datasheet(5/20 Pages) TI1

No. de pieza	TPS2115A-Q1

Descripción Electrónicos	AUTO-SWITCHING POWER MULTIPLEXER

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Fabricante Electrónico	TI1 [Texas Instruments]

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ELECTRICAL CHARACTERISTICS

TPS2115A-Q1

www.ti.com........................................................................................................................................................................................... SBVS124 – NOVEMBER 2008

over operating free-air temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 Ω (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Power Switch (1)

VI(IN1) = VI(IN2) = 5.0 V

84

110

TA = 25°C, IL = 500 mA

VI(IN1) = VI(IN2) = 3.3 V

84

110

VI(IN1) = VI(IN2) = 2.8 V

84

110

Drain-source on-state

rDS(on)

m

Ω

resistance (INx to OUT)

VI(IN1) = VI(IN2) = 5.0 V

150

TA = 85°C, IL = 500 mA

VI(IN1) = VI(IN2) = 3.3 V

150

VI(IN1) = VI(IN2) = 2.8 V

150

Logic Inputs (D0 and D1)

D0 or D1 = high, sink current

1

II

Input current at D0 or D1

µA

D0 or D1 = low, source current

0.5

1.4

5

Supply and Leakage Currents

D1 = high, D0 = low (IN1 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A

55

90

D1 = high, D0 = low (IN1 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A

1

12

Supply current from IN1 (operating)

µA

D0 = D1 = low (IN2 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A

75

D0 = D1 = low (IN2 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A

1

D1 = high, D0 = low (IN1 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A

1

D1 = high, D0 = low (IN1 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A

75

Supply current from IN2 (operating)

µA

D0 = D1 = low (IN2 active), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 A

1

12

D0 = D1 = low (IN2 active), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 A

55

90

VI(IN1) = 5.5 V, VI(IN2) = 3.3 V

0.5

2

Quiescent current from IN1 (standby)

D0 = D1 = high (inactive), IO(OUT) = 0 A

µA

VI(IN1) = 3.3 V, VI(IN2) = 5.5 V

1

VI(IN1) = 5.5 V, VI(IN2) = 3.3 V

1

Quiescent current from IN2 (standby)

D0 = D1 = high (inactive), IO(OUT) = 0 A

µA

VI(IN1) = 3.3 V, VI(IN2) = 5.5 V

0.5

2

Forward leakage current from IN1

D0 = D1 = high (inactive), VI(IN1) = 5.5 V, IN2 open, VO(OUT) = 0 V (shorted),

0.1

5

µA

(measured from OUT to GND)

TA = 25°C

Forward leakage current from IN2

D0 = D1= high (inactive), VI(IN2) = 5.5 V, IN1 open, VO(OUT) = 0 V (shorted),

0.1

5

µA

(measured from OUT to GND)

TA = 25°C

Reverse leakage current to INx

D0 = D1 = high (inactive), VI(INx) = 0 V, VO(OUT) = 5.5 V, TA = 25°C

0.3

5

µA

(measured from INx to GND)

Current Limit Circuit

RILIM = 400 Ω

0.95

1.25

1.56

Current limit accuracy

A

RILIM = 700 Ω

0.47

0.71

0.99

td

Current limit settling time

Time for short-circuit output current to settle within 10% of its steady state value

1

ms

II

Input current at ILIM

VI(ILIM) = 0 V, IO(OUT) = 0 A

–15

0

µA

UVLO

Falling edge

1.15

1.25

IN1 and IN2 UVLO

V

Rising edge

1.30

1.35

IN1 and IN2 UVLO hysteresis

30

57

65

mV

Falling edge

2.4

2.53

Internal VDD UVLO (the higher of IN1

V

and IN2)

Rising edge

2.58

2.8

Internal VDD UVLO hysteresis

30

50

75

mV

UVLO deglitch for IN1, IN2

Falling edge

110

µs

Reverse Conduction Blocking

Minimum input-to-output

D0 = D1 = high, VI(INx) = 3.3 V. Connect OUT to a 5-V supply through a series

ΔVIO(blk) voltage difference to block

1-k

Ω resistor. Set D0 = low. Slowly decrease the supply voltage until OUT

80

100

120

mV

switching

connects to IN1.

(1)

The TPS2115A can switch a voltage as low as 1.5 V as long as there is a minimum of 2.8 V at one of the input power pins. In this

specific case, the lower supply voltage has no effect on the IN1 and IN2 switch on-resistances.

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