TPS56300 datasheet(10/40 Pages) TI1

No. de pieza	TPS56300

Descripción Electrónicos	DUAL-OUTPUT LOW-INPUT-VOLTAGE DSP POWER SUPPLY CONTROLLER WITH SEQUENCING

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Fabricante Electrónico	TI1 [Texas Instruments]

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TPS56300

DUALOUTPUT LOW INPUT VOLTAGE

DSP POWER SUPPLY CONTROLLER WITH SEQUENCING

SLVS261B − DECEMBER 1999 − SEPTEMBER 2000

10

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electrical characteristics TJ = −40° to 125°C, VCC = 2.8 V to 5.5 V (unless otherwise noted)

high-side VDS sensing

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Gain

2

V/V

Initial accuracy

VHISENSE = 3.3 V,

VIOUTLO = 3.2 V,

Differential input to Vds sensing amp = 100 mV

194

208

mV

Common-mode rejection ratio

VHISENSE=2.8 V to 5.5 V,

VHISENSE− VIOUTLO=100 mV

69

75

dB

Sink current (IOUTLO)

2.8 V < VIOUTLO < 5.5 V

250

nA

Source current (IOUT)

VIOUT = 0.5 V,

VHISENSE=3.3 V,

VIOUTLO=2.8 V

500

µA

Sink current (IOUT)

VIOUT = 0.05 V,

VHISENSE=3.35 V,

VIOUTLO=3.3 V

50

µA

VHISENSE=5.5 V,

RIOUT = 10 kΩ

0

1.75

Output voltage swing

VHISENSE=4.5 V,

RIOUT = 10 kΩ

0

1.5

V

Output voltage swing

VHISENSE=3 V,

RIOUT = 10 kΩ

0

0.75

V

LOSENSE high level input voltage

VHISENSE=2.8 V,

See Note 2

1.77

V

LOSENSE low level input voltage

VHISENSE=2.8 V,

See Note 2

1.49

V

LOSENSE high level input voltage

VHISENSE=4.5 V,

See Note 2

2.85

V

LOSENSE low level input voltage

VHISENSE=4.5 V,

See Note 2

2.4

V

LOSENSE high level input voltage

VHISENSE=5.5 V,

See Note 2

3.80

V

LOSENSE low level input voltage

VHISENSE=5.5 V,

See Note 2

3.2

V

VHISENSE = 6 V,

See Note 2

70

90

Sample/hold resistance

VHISENSE = 4.5 V,

See Note 2

80

100

Ω

Sample/hold resistance

VHISENSE = 3.6 V,

See Note 2

90

120

Ω

VHISENSE = 2.8 V,

See Note 2

120

180

VHISENSE = 2.55 V,

VIOUTLO pulsed from 2.55 V to 2.45 V,

100 ns rise and fall times,

See Note 2

4

Response time (measured from 90% of

VHISENSE = 2.8 V,

VIOUTLO pulsed from 2.8 V to 2.7 V,

100 ns rise and fall times,

See Note 2

3.5

s

Response time (measured from 90% of

VIOUTLO to 90% of VIOUT)

VHISENSE = 4.5 V,

VIOUTLO pulsed from 4.5V to 4.4V,

100 ns rise and fall times,

See Note 2

3

µs

VHISENSE = 5.5 V,

VIOUTLO pulsed from 5.5 V to 5.9 V,

100 ns rise and fall times,

See Note 2

3

Short circuit protection rising edge delay

LOSENSE grounded,

See Note 2

300

500

ns

Sample/hold switch turnon/turnoff delay

2.8V < VHISENSE < 5.5V,

VLOSENSE = VHISENSE,

See Note 2

30

100

ns

NOTE 2. Ensured by design, not production tested.

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