MP8125 – LNB POWER SUPPLY AND CONTROL VOLTAGE REGULATOR

MP8125 Rev. 1.11

www.MonolithicPower.com

3

5/9/2013

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ELECTRICAL CHARACTERISTICS

Parameter

Symbol Condition

Min

Typ

Max

Units

General

Input Voltage Range

8

12

14

V

Input Supply Current

(5)

EN=High, no load

5

mA

Under Voltage Lockout

UVLO

7

8

V

UVLO Hysteresis

350

mV

2

V

EN Input Logic Threshold

0.8

V

2

V

13V/18V

Input

Logic

Threshold

0.8

V

2

V

LINEDROP

Input

Logic

Threshold

0.8

V

TCAP pin current

TCAP capacitor charging

7

μA

Output Backward Leakage

Current

(6)

24V, VBOOST is float

0.7

1

mA

Voltage on BYPASS pin

5

V

SWITCHING REGULATOR

Boost Switch On Resistance

(5)

500

mΩ

Boost Frequency

352

kHz

LINEAR REGULATOR

Dropout Voltage

(5)

0.9

V

OUTPUT

LINEDROP=Low,

12.8

13.2

13.6

V

LINEDROP=Low,

17.6

18.14

18.7

V

LINEDROP=High,

13.72

14.2

14.58

V

Output Voltage

LINEDROP=High,

18.57

19.14

19.73

V

Output Line Regulation

4

40

mV

13V/18V=Low

20

mV

Output Load Regulation

(5)

13V/18V=High

30

mV