MP8128
MP8128 is LNB Voltage Regulator manufactured by Monolithic Power Systems.
DESCRIPTION
The MP8128 is a highly integrated voltage regulator designed to provide efficient, lownoise power and interface signals to a satellite receiver’s low noise block downconverter (LNB) at the antenna port. The device provides a 22k Hz tone signal and a standard I2C interface for satellite receivers. It is patible with both Di SEq C 1.x and Di SEq C 2.x.
The MP8128 integrates a boost regulator followed by a tracking linear regulator. The boost regulator provides a power source that exceeds the final output voltage by 1.1V, while the tracking linear regulator provides low noise power and protects the output against overloads or shorts.
The device provides a number of features including voltage selection, over-current protection (OCP), and 22k Hz tone signal control. The MP8128 offers a simple solution with a low ponent count and high efficiency.
The MP8128 is available in QFN-20 (3mmx3mm) package.
FEATURES
- Di SEq C 1.x and Di SEq C 2.x patible
- Integrated I2C Interface
- 8V to 14V Input Voltage
- 40V VOUT Rating
- Up to 1A Configurable Current Limit
- Low-Noise LDO Output
- 440k Hz Switching Frequency
- Selectable Internal or External 22k Hz Signal
Source
- Selectable Output Voltage
- OCP, SCP, and OVP
- Over-Temperature Protection (OTP)
- Available in QFN-20 (3mmx3mm) Package
Optimized Performance with MPS Inductor MPL-AL6060 Series
APPLICATIONS
- LNB Power Supplies and Control for Satellite Set Top Boxes
- TV Satellite Receivers
- PC Card Satellite Receivers
All MPS parts are lead-free, halogen-free, and adhere to the Ro HS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
TYPICAL APPLICATION
C3 D1
L1
VDD = 8V to 14V
C1A
C1B
EN Tone
C7
C4
VBOOST BST
SW...
