EV8126DF-00A
550mA, 8-14V Input, LNB Power Supply and
Control Voltage Regulator Evaluation Board
EV8126DF-00A Rev. 1.0 www.MonolithicPower.com 1
4/19/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV8126DF-00A is an evaluation board for
MP8126, which is LNB power supply and control
voltage regulator. The board provides efficient,
low noise power to the Satellite receiver’s RF
LNB (Low Noise Block) converter.
The board accepts the supply voltage from 8V to
14V and the load current can be up to 550mA.
The current limit can be adjustable with an
external resistor.
The board provides a number of features
described in the European EUTELSAT
specification (DiSEqC) including: voltage
selection of horizontal or vertical polarization
directions of LNB and a selectable V
OUT
compensation for voltage drop on the long
coaxial cable. In accordance with DiSEqC
standard, the part can detect 22kHz signal and
output it with the builtin amplitudes and rise/fall
times.
ELECTRICAL SPECIFICATION
Parameter Symbol Value Units
Input Voltage V
IN
8-14 V
Output Voltage V
OUT
19 V
Output Current I
OUT
0-0.55 A
FEATURES
DiSEqC 1.x Compatibility
8V to 14V Input Voltage
Up to 550mA Output Current
Programmable Current Limit
1V Line Drop Compensation
Adjustable Soft-start Time
POK Indicator
Short Circuit Protection
Over Temperature Protection
APPLICATIONS
LNB Power Supply and Control for Satellite
Set Top Boxes
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
EV8126DF-00A EVALUATION BOARD
EFFICIENCY (%)
Effi ciency for 19V output
60
70
80
90
100
0.01 0.1 1
I
OUT
(A)
(L x W x H) 2.9” x 2.9” x 0.4”
7.3cm x 7.3cm x 1cm
Board Number MPS IC Number
EV8126DF-00A MP8126DF
