LTM2883 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTM2883

SPI/Digital or I2C µModule Isolator with Adjustable ±12.5V and 5V Regulated Power

Linear Technology 

LTM2883

Typical Performance Characteristics TA = 25°C, LTM2883-3 VCC = 3.3V,

LTM2883-5 VCC = 5V, VL = 3.3V, GND = GND2 = 0V, ON = VL unless otherwise noted.

Power On Sequence

ON

V+

vVsCCV2+,CrVo–sLsoRaedgulation

5.2

5.1

14

LTM2883-3

VCC = 3.3V 13

ICC2 = 15mA

12

VCC2

11

5V/DIV

5.0

10

9

200µs/DIV

V–

2883 G34

4.9

4.8

0

VVC+C2

V–

10

20

30

LOAD CURRENT (mA)

8

7

6

40

2883 G35

vVsCCV2+,CrVo–sLsoRaedgulation

5.2

5.1

14

LTM2883-5

VCC = 5V

ICC2 = 15mA

13

12

11

5.0

10

9

4.9

4.8

0

VVC+C2

V–

10

20

30

LOAD CURRENT (mA)

8

7

6

40

2883 G36

Isolated Supply Efficiency with

Equal Load Current

60

1.0

0.9

50

0.8

40

0.7

EFFICIENCY

0.6

30

0.5

0.4

20

0.3

POWER LOSS

10

0.2

LTM2883-3, VCC = 3.3V 0.1

LTM2883-5, VCC = 5V

0

0

0

5

10

15

20

25

LOAD CURRENT (mA)

2883 G37

V+ Cross Regulation vs V– Load

14

LTM2883-3

13

VCC = 3.3V

12

11

10

9

8

V+, I+ = 10mA

V–, I+ = 10mA

7

V+, I+ = 15mA

V–, I+ = 15mA

6

0

5

10

15

20

25

LOAD CURRENT (mA)

2883 G38

V+ Cross Regulation vs V– Load

14

LTM2883-5

13

VCC = 5V

12

11

10

9

8

V+, I+ = 10mA

V–, I+ = 10mA

7

V+, I+ = 15mA

V–, I+ = 15mA

6

0 5 10 15 20 25 30 35

LOAD CURRENT (mA)

2883 G39

2883f

11

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