MP8126 550mA, 8V-to-14V Input, LNB-Power Supply and Control-Voltage Regulator The Future of Analog IC Technology DESCRIPTION FEATURES The MP8126 is a voltage regulator designed to DiSEqC 1.x Compatibility provide efficient, low-noise power to a satellite Up to 550mA Output Current receivers RF LNB (Low Noise Block) converter. Programmable Current Limit It connects using a coaxial cable through a link 8V-to-14V Input Voltage that is compatible with the European Boost Converter with Internal Switch EUTELSAT specification (DiSEqC) 1.x that Low-Noise LDO Output receives instructions from a dedicated controller. Built-In 22kHz Signal Shaper The MP8126 integrates a current-mode boost 1V Line-Drop Compensator regulator followed by a tracking linear regulator. Adjustable Soft-Start Time The boost regulator provides a clean and quiet POK Indicator power source that will not contaminate the low- Short-Circuit Protection noise RF signal as it is down-converted to the Over-Temperature Protection receiver. The tracking linear regulator protects TSSOP16 Exposed Pad and 24-pin QFN the output against overloads or shorts. (4X4mm) Packages The MP8126 provides a number of features APPLICATIONS described in the DiSEqC, including voltage LNB Power Supply and Control for Satellite selection of horizontal or vertical LNB Set Top Boxes polarization directions, and selectable VOUT compensation for substantial voltage drops on All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Products, Quality Assurance. long coaxial cable. In accordance with DiSEqC, MPS and The Future of Analog IC Technology are Registered Trademarks of the part can detect a 22kHz signal and output a Monolithic Power Systems, Inc. shaped signal. The MP8126 is available in a thermally- enhanced TSSOP16EP and 24-pin QFN (4X4mm) packages. TYPICAL APPLICATION MP8126 Rev. 1.03 www.MonolithicPower.com 1 3/28/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP8124MP8126 LNB POWER SUPPLY AND CONTROL VOLTAGE REGULATOR ORDERING INFORMATION Part Number Package Top Marking TSSOP16EP MP8126DF* MP8126 QFN24 (4X4mm) MP8126DR** MP8126 * For Tape & Reel, add suffix Z (e.g. MP8126DFZ). For RoHS compliant packaging, add suffix LF (e.g. MP8126DFLFZ) ** For Tape & Reel, add suffix Z (e.g. MP8126DRZ). For RoHS compliant packaging, add suffix LF (e.g. MP8126DRLFZ) PACKAGE REFERENCE TOP VIEW TOP VIEW 24 23 22 21 20 19 SGND 1 16 PGND BYPASS 2 15 SW NC 1 18 NC VDD 3 14 BST 2 17 VDD BST COMP 4 EP 13 VBOOST 3 16 NC VBOOST EXPOSED PAD EN 5 12 VOUT COMP 4 CONNECT TO GND 15 VBOOST LINEDROP 6 11 ILIMIT 5 14 EN VOUT POK 7 10 TCAP 6 13 LINEDROP VOUT 13V/18V 8 9 EXTM 7 8 9 10 11 12 TSSOP-16EP QFN24 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC VDD ................................................-0.3V to 16V TSSOP-16EP..........................45 ....... 8.... C/W VOUT, SW, VBOOST ....................-0.3V to 25V QFN24(4x4mm) ......................42 ....... 9.... C/W BST.....................................................V +7V Boost All Other Pins................................-0.3V to 6.5 V Notes: (2) 1) Exceeding these ratings may damage the device. Continuous Power Dissipation..(T =+25C) A 2) The maximum allowable power dissipation is a function of the TSSOP-16EP2.8W maximum junction temperature T(MAX), the junction-to- J ambient thermal resistance , and the ambient temperature QFN24(4x4mm)2.9W JA T . The maximum allowable continuous power dissipation at A Junction Temperature...............................150C any ambient temperature is calculated by P (MAX)=(T (MAX)- D J Lead Temperature ....................................260C T )/ . Exceeding the maximum allowable power dissipation A JA will cause excessive die temperature, and the regulator will go Storage Temperature................. -65C to 150C into thermal shutdown. Internal thermal shutdown circuitry (3) protects the device from permanent damage. Recommended Operating Conditions 3) The device is not guaranteed to function outside of its Supply Voltage VIN.............................8V to 14V operating conditions. 4) Measured on JESD51-7 4-layer PCB Output Voltage VOUT............ 13V/14V/18V/19V Operating Junction Temp. (T ). -40C to +125C J MP8126 Rev. 1.03 www.MonolithicPower.com 2 3/28/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP8124 PQK BYPASS 13V/18V BYPASS NC SGND PGND EXTM PGND TCAP ILIMIT SW