MP8126DF datasheet(4/13 Pages) MPS

4 / 13 page

MP8126 – LNB POWER SUPPLY AND CONTROL VOLTAGE REGULATOR

MP8126 Rev. 1.03

www.MonolithicPower.com

5/27/2013

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

ELECTRICAL CHARACTERISTICS (continued)

VIN = 12V, TA = 25°C, unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

TONE Signal

VEXTM_High VEXTM rising

EXTM Input Logic Threshold

VEXTM_Low VEXTM falling

0.8

EXTM Frequency Range

(7)

VEXTM_High=3.3V, VEXTM_Low=0V

kHz

Peak-to-Peak Amplitude

VPP

IOUT = 0 to 100mA

0.4

0.6

0.8

Duty Cycle

RL=1kΩ, CL=0.1μF

Rise and Fall Time

RL=1kΩ, CL=0.1μF

μs

Over-Current Protection

Output Current Limit

ILIMIT

RLIMIT=10kΩ

600

770

1100

Dynamic Overload-

Protection Off Time

τOFF

Time between restart attempts

Dynamic Overload-

Protection On Time

τON

Time to onset of shutdown

POK

POK Upper-Trip Threshold

(5)

VFB with respect to nominal

POK Lower-Trip Threshold

VFB with respect to nominal

-12

POK Output Lower Voltage

ISINK = 5mA

0.3

Thermal Protection

Over-Temperature

Shutdown

(5)

150

°C

Over-Temperature

Protection Hysteresis

°C

Notes:

5) Guaranteed by design.

6) Shall withstand the back voltage for an indefinite period of time. On removal of the fault condition the device returns to normal operation

7) This range is used to guarantee EXTM function.

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