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MIC5010 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC5010 Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 16 page  April 1998 5-87 MIC5010 Micrel 5 =24V IRCZ44 (S=2590, R=11m Ω) 10µF 43 Ω 20k Ω 4.3k Ω R R1 Figure 1. High-Side Driver with Current-Sensing MOSFET LOAD Control Input V + + Inhibit Input Thresh Sense Source Gnd Fault V+ C1 Com C2 Gate 1 2 3 4 5 6 78 9 10 11 12 13 14 MIC5010 NC NC S R1= 100mV SRR (SR+R ) V + SR( +100mV) R I – ( +100mV) R = R = –1000 2200 V TRIP S For this example: =30A (trip current) I L =100mV V TRIP S S TH V TRIP V TRIP L RTH SENSE SOURCE KELVIN Ordering Information Part Number Temperature Range Package MIC5010BN –40 °C to +85°C 14-pin Plastic DIP MIC5010BM –40 °C to +85°C 14-pin SOIC MIC5010 Full-Featured High- or Low-Side MOSFET Driver Not Recommended for New Designs General Description The MIC5010 is the full-featured member of the Micrel MIC501X driver family. These ICs are designed to drive the gate of an N-channel power MOSFET above the supply rail in high-side power switch applications. The MIC5010 is compatible with standard or current-sensing power FETs in both high- and low-side driver topologies. The MIC5010 charges a 1nF load in 60 µs typical and protects the MOSFET from over-current conditions. Faster switching is achieved by adding two 1nF charge pump capacitors. The current sense trip point is fully program- mable and a dynamic threshold allows high in-rush current loads to be started. A fault pin indicates when the MIC5010 has turned off the FET due to excessive current. Other members of the Micrel driver family include the MIC5011 minimum parts count 8 pin driver, MIC5012 dual driver, and MIC5013 protected 8 pin driver. Features • 7V to 32V operation • Less than 1 µA standby current in the “OFF” state • Internal charge pump to drive the gate of an N-channel power FET above supply • Available in small outline SOIC packages • Internal zener clamp for gate protection •25 µs typical turn-on time to 50% gate overdrive • Programmable over-current sensing • Dynamic current threshold for high in-rush loads • Fault output pin indicates current faults • Implements high- or low-side switches Applications • Lamp drivers • Relay and solenoid drivers • Heater switching • Power bus switching • Motion control • Half or full H-bridge drivers Typical Application Protected under one or more of the following Micrel patents: patent #4,951,101; patent #4,914,546 Note: The MIC5010 is ESD sensitive. |
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