MP8124 – 500mA, LNB POWER SUPPLY AND CONTROL REGULATOR

MP8124 Rev. 1.0

www.MonolithicPower.com

5

11/11/2015

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© 2015 MPS. All Rights Reserved.

noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

9

ms

LDO sink current protection

on time

(5)

9

ms

450

ms

LDO sink current protection

off time

(5)

450

ms

Tone Signal

External tone source

frequency range

(7)

duty = 50%

20

22

24

kHz

Peak-to-peak amplitude

0.45

0.65

0.85

V

Duty cycle

40

50

60

%

Rise and fall time

5

10

15

μs

Logic Interface

Input logic low voltage

VLI

0.8

V

Input logic high voltage

VHI

2

V

Logic input current

Connect to 5V or 0V

-10

10

μA

NOTES:

5) Guaranteed by characterization test, not tested in production.

6) Can withstand the back voltage for an indefinite period of time. Once the fault condition is removed, the device resumes normal operation.

7) The input tone signal source must be limited in this range to guarantee EXTM function.

8) The input voltage connected to these logic pins should be limited below the absolute maximum ratings and cannot be pulled directly up to

a high voltage through one pull-up resistor. For default high-level input connection, pull LINEDROP and 13V/18V to the BYPASS voltage

and pull EN to VIN through the resistor divider. Refer to Figure 4 on page 20 for connection details.