LTC2978CUPPBF datasheet(10/64 Pages) LINER

Part #	LTC2978CUPPBF

Description	Octal PMBus Power Supply Monitor and Controller with EEPROM

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC2978

0

2978fa

Typical perForMance characTerisTics

Voltage Buffered IDAC Offset

Voltage vs Temperature

Voltage Buffered IDAC-INL

Voltage Buffered IDAC Load

Regulation (Sourcing)

IDAC Voltage Buffer Load

Regulation (Sinking)

IDAC Voltage Buffer Short-Circuit

Current vs Temperature

IDAC Voltage Buffer Transient

Response to 1LSB DAC Code

Change

IDAC Voltage Buffer Soft Connect

Transient Response when

Transitioning from Hi-Z State to

ON State

Voltage Buffered IDAC DNL

IDAC Voltage Buffer Soft Connect

Transient Response when

Transitioning from ON State to

Hi-Z State

TEMPERATURE (°C)

–50

2.5

2.3

2.1

1.9

1.7

1.5

1.3

1.1

0.9

0.7

0.5

70

2978 G16

–20

–35

10

–5

40 55

85

25

100

DAC CODE

0

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

800

2978 G17

200

400

600

1000

DAC CODE

0

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

800

2978 G18

200

400

600

1000

CURRENT (mA)

0

2.678

2.680

2.684

2.686

2.688

2.698

85°C

2.692

–0.5

–1 –1.25

2978 G19

2.682

2.694

2.696

2.690

–0.25

–0.75

–1.50 1.75 –2

25°C

–40°C

CURRENT (mA)

0

0.5

1 1.25

2

2978 G20

0.25

0.75

1.5 1.75

0.1038

0.1036

0.1034

0.1032

85°C

25°C

0.1030

0.1028

0.1026

–40°C

TEMPERATURE (°C)

8.70

8.80

8.90

9.00

8.75

8.85

8.95

–20

10

40

70

2978 G21

100

–35

–50

–5

25

55

85

10mV/DIV

500µs/DIV

100k SERIES RESISTANCE ON

CODE: ‘h1FF

2978 G23

HI-Z

CONNECTED

10mV/DIV

500µs/DIV

100k SERIES RESISTANCE ON

CODE: ‘h1FF

2978 G24

CONNECTED

HI-Z

500µV/DIV

2µs/DIV

2978 G22

CODE ‘h1FF

CODE ‘h200

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LTC2978CUPPBF Datasheet(PDF) 10 Page - Linear Technology

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