LTC2978CUP-PBF(RevA) Просмотр технического описания (PDF) - Linear Technology

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Компоненты Описание

производитель

LTC2978CUP-PBF
(Rev.:RevA)

Octal PMBus Power Supply Monitor and Controller with EEPROM

Linear Technology 

LTC2978

Typical Performance Characteristics

Voltage Buffered IDAC Offset

Voltage vs Temperature

2.5

2.3

2.1

1.9

1.7

1.5

1.3

1.1

0.9

0.7

0.5

–50 –35 –20 –5 10 25 40 55 70 85 100

TEMPERATURE (°C)

2978 G16

Voltage Buffered IDAC Load

Regulation (Sourcing)

2.698

2.696

85°C

2.694

2.692

25°C

2.690

2.688

2.686

2.684

2.682

2.680

–40°C

2.678

0 –0.25 –0.5 –0.75 –1 –1.25–1.50 1.75 –2

CURRENT (mA)

2978 G19

IDAC Voltage Buffer Transient

Response to 1LSB DAC Code

Change

Voltage Buffered IDAC-INL

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

200 400 600 800 1000

DAC CODE

2978 G17

IDAC Voltage Buffer Load

Regulation (Sinking)

0.1038

0.1036

0.1034

0.1032

85°C

25°C

0.1030

0.1028

–40°C

0.1026

0 0.25 0.5 0.75 1 1.25 1.5 1.75 2

CURRENT (mA)

2978 G20

IDAC Voltage Buffer Soft Connect

Transient Response when

Transitioning from Hi-Z State to

ON State

Voltage Buffered IDAC DNL

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

200 400 600 800 1000

DAC CODE

2978 G18

IDAC Voltage Buffer Short-Circuit

Current vs Temperature

9.00

8.95

8.90

8.85

8.80

8.75

8.70

–50 –35 –20 –5 10 25 40 55 70 85 100

TEMPERATURE (°C)

2978 G21

IDAC Voltage Buffer Soft Connect

Transient Response when

Transitioning from ON State to

Hi-Z State

CODE ‘h200

500µV/DIV

CODE ‘h1FF

HI-Z

10mV/DIV

HI-Z

10mV/DIV

CONNECTED

CONNECTED

2µs/DIV

2978 G22

500µs/DIV

100k SERIES RESISTANCE ON

CODE: ‘h1FF

2978 G23

500µs/DIV

100k SERIES RESISTANCE ON

CODE: ‘h1FF

2978 G24

2978fa

10

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