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RT9712 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9712 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
1 / 14 page RT9712 ® DS9712-04 November 2012 www.richtek.com 1 © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. 90m Ω Ω Ω Ω Ω, 1A/1.5A High-Side Dual Power Switches with Flag Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Pin Configurations SOP-8/MSOP-8 (TOP VIEW) RT9712A/C RT9712B/D Features 90m Ω Ω Ω Ω Ω N-MOSFET Switch Operating Voltage Range : 2.7V to 5.5V Reverse Blocking Current Under Voltage Lockout Deglitched Fault Report (FLGx) Thermal Protection with Foldback Over Current Protection Short Circuit Protection UL Approved −−−−−E219878 Nemko Approved-NO49352 RoHS Compliant and Halogen Free GND VIN VOUT2 VOUT1 EN1 EN2 2 3 4 5 8 7 6 FLG2 FLG1 GND VIN VOUT2 VOUT1 EN1 EN2 2 3 4 5 8 7 6 FLG2 FLG1 Applications USB Peripherals Notebook PCs RT9712 Package Type S : SOP-8 F : MSOP-8 Lead Plating System G : Green (Halogen Free and Pb Free) Output Current/ENx Function A : 1.5A/Active High B : 1.5A/Active Low C : 1A/Active High D : 1A/Active Low Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. General Description The RT9712 power-distribution switches are designed to fulfill the applications in heavy capacitive loads and short- circuit situations. The device incorporates two 90m Ω N- MOSFET power switches to fit power distribution systems requiring multiple power switches in a single package. During switching process, an internal charge pump is designed to provide the gate drive for the purpose of power- switch rise times and fall times controlling to minimize the current surges. The charge pump can operate in supply voltage as low as 2.7V and needs no external components. If the output load exceeds the current-limit threshold or a short-circuit occurs.The RT9712 series pull the overcurrent (FLGx) logic output low by switching into the constant- current mode to maintain the output current in a safe level, A thermal protection circuit turns off the switch to prevent the device from damage when power dissipation is increased by continuous heavy overloads and short-circuits in the switch and finally cause the rise of the junction temperature. The device automatically recovers when it has sufficiently cooled down. The RT9712A/B are designed for the current limit at typically 2A and RT9712C/D are designed for the current limit at typically 1.5A. Internal circuitry controls the switch to remain off until valid input voltage is presented. |
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