MIC5011YM

MIC5011 Micrel, Inc. MIC5011 Minimum Parts High- or Low-Side MOSFET Driver General Description Features The MIC5011 is the “minimum parts count” 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 8-pin MIC5011 is extremely easy to use, requiring only a power FET and nominal supply decoupling to implement either a high- or low-side switch. The MIC5011 charges a 1nF load in 60µs typical with no external components. Faster switching is achieved by adding two 1nF charge pump capacitors. Operation down to 4.75V allows the MIC5011 to drive standard MOSFETs in 5V low-side applications by boosting the gate voltage above the logic supply. In addition, multiple paralleled MOSFETs can be driven by a single MIC5011 for ultra-high current applications. Other members of the Micrel driver family include the MIC5013 protected 8-pin driver. For new designs, Micrel recommends the pin-compatible MIC5014 MOSFET driver. • 4.75V to 32V operation • Less than 1µA 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 • Minimum external parts count • Can be used to boost drive to low-side power FETs operating on logic supplies • 25µs typical turn-on time with optional external capacitors • Implements high- or low-side drivers Typical Applications Ordering Information Applications • • • • Lamp drivers Relay and solenoid drivers Heater switching Power bus switching Part Number 14.4V ON 10µF + MIC5011 1 V+ C1 8 2 Input Com 7 3 Source C2 6 4 Gnd Gate 5 Control Input OFF Standard Pb-Free MIC5011BN MIC5011YN Temperature Range Package –40ºC to +85ºC 8-pin Plastic DIP MIC5011BM MIC5011YM –40ºC to +85ºC 8-pin SOIC IRF531 #6014 Figure 1. High Side Driver ON 5V 10µF + MIC5011 1 V+ Control Input OFF Note: The MIC5011 is ESD sensitive. 48V C1 8 2 Input Com 7 3 Source C2 6 4 Gnd Gate 5 100W Heater IRF530 Protected under one or more of the following Micrel patents: patent #4,951,101; patent #4,914,546 Figure 2. Low Side Driver Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 2005 1 MIC5011 MIC5011 Micrel, Inc. Absolute Maximum Ratings (Note 1, 2) Operating Ratings (Notes 1, 2) Supply Voltage Pin 1 Input Voltage, Pin 2 Source Voltage, Pin 3 Current into Pin 3 Gate Voltage, Pin 5 Junction Temperature Power Dissipation 1.25W θJA (Plastic DIP) 100°C/W θJA (SOIC) 170°C/W Ambient Temperature: B version –40°C to +85°C Storage Temperature –65°C to +150°C Lead Temperature 260°C (Soldering, 10 seconds) Supply Voltage (V+), Pin 1 4.75V to 32V high side 4.75V to 15V low side (V+), –0.5V to 36V –10V to V+ –10V to V+ 50mA –1V to 50V 150°C Pin Description (Refer to Typical Applications) Pin Number Pin Name 1 V+ Pin Function Supply; must be decoupled to isolate from large transients caused by the power FET drain. 10µF is recommended close to pins 1 and 4. 2 Input Turns on power MOSFET when taken above threshold (3.5V typical). Requires