LTM2887 datasheet(9/38 Pages) LINER

9 / 38 page

LTM2887

2887fb

For more information www.linear.com/LTM2887

TYPICAL PERFORMANCE CHARACTERISTICS T

A = 25°C, LTM2887-3 VCC = 3.3V,

LTM2887-5 VCC = 5V, VL = 3.3V, GND = GND2 = 0V, ON = VL unless otherwise noted.

VCC2 or VL2 Transient Response

100mA Load Step

VCC2 or VL2 Ripple

200µs/DIV

2887 G09

0.2V/

DIV

50mA/

DIV

400ns/DIV

2887 G10

5mV/

DIV

LOAD = 100mA

LOAD = 1mA

VCC2 or VL2 Noise

10ms/DIV

2887 G11

2mV/

DIV

LOAD = 100mA

LOAD = 1mA

VCC Supply Current

vs Single Channel Data Rate

Logic Input Threshold

vs VL Supply Voltage

Logic Output Voltage

vs Load Current

DATA RATE (Hz)

100k

10k

2887 G12

100M

10M

LTM2887-5

CL = 1nF

CL = 330pF

CL = 100pF

CL = 20pF

VL SUPPLY VOLTAGE (V)

3.5

2.5

0.5

1.0

2.0

3.0

1.5

2887 G13

INPUT RISING

INPUT FALLING

|LOAD CURRENT| (mA)

2887 G14

VL = 5.5V

VL = 3.3V

VL = 1.62V

Power On Sequence

VCC2 and VL2 Efficiency with

Equal Load Current

2887 G15

1V/DIV

1ms/DIV

5V/DIV

VCC2

or VL2

VL = 5V

LOAD CURRENT (mA)

1.4

0.8

0.4

0.6

0.2

1.0

1.2

0.0

100

2887 G16

125

LTM2887-3, VCC = 3.3V

LTM2887-5, VCC = 5V

POWER LOSS

EFFICIENCY

BASED ON THERMAL IMAGING

OF DEMO CIRCUIT 1791A

VCC2 and VL2 EQUALLY LOADED

LTM2887-3, VCC = 3.3V

LTM2887-5, VCC = 5V

TEMPERATURE (°C)

100

125

100

200

300

400

500

600

2887 G17

Derating for 125°C Maximum

Internal Operating Temperature

LTM2887 Datasheet(PDF) 9 Page - Linear Technology

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