MIC5014/5015 Micrel, Inc. MIC5014/5015 Low-Cost High- or Low-Side MOSFET Driver General Description Features MIC5014 and MIC5015 MOSFET drivers are designed for 2.75V to 30V operation gate control of N-channel, enhancement-mode, power 100A maximum supply current (5V supply) MOSFETs used as high-side or low-side switches. 15A typical off-state current The MIC5014/5 can sustain an on-state output indefinitely. Internal charge pump TTL compatible input The MIC5014/5 operates from a 2.75V to 30V supply. In high- Withstands 60V transient (load dump) side configurations, the driver can control MOSFETs that Reverse battery protected to 20V switch loads of up to 30V. In low-side configurations, with Inductive spike protected to 20V separate supplies, the maximum switched voltage is limited Overvoltage shutdown at 35V only by the MOSFET. Internal 15V gate protection The MIC5014/5 has a TTL compatible control input. Minimum external parts The MIC5014 is noninverting while the MIC5015 is inverting. Operates in high-side or low-side configurations The MIC5014/5 features an internal charge pump that can 1A control input pull-off sustain a gate voltage greater than the available supply Inverting and noninverting versions voltage. The driver is capable of turning on a logic-level MOSFET from a 2.75V supply or a standard MOSFET from a Applications 5V supply. The gate-to-source output voltage is internally limited to approximately 15V. Automotive electrical load control Battery-powered computer power management The MIC5014/5 is protected against automotive load dump, Lamp control reversed battery, and inductive load spikes of 20V. Heater control The drivers overvoltage shutdown feature turns off the exter- Motor control nal MOSFET at approximately 35V to protect the load against Power bus switching power supply excursions. The MIC5014 is an improved pin-for-pin compatible replace- ment in many MIC5011 applications. The MIC5014/5 is available in plastic 8-pin DIP and 8-pin SOIC pacakges. Typical Application +3V to +4V 10F MIC5014 1 8 V+ NC Control Input 2 7 ON Input NC OFF 3 6 Source NC 4 5 Gnd Gate IRLZ24 Figure 1. 3V Sleep-Mode Switch with a Logic-Level MOSFET Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 MIC5014/5015 Micrel, Inc. Ordering Information Part Number Temperature Standard Pb-Free Range Configuration Package MIC5014BM MIC5014YM 40C to +85C Non-Inverting 8-Pin SOIC MIC5014BN MIC5014YN 40C to +85C Non-Inverting 8-Pin PDIP MIC5015BM MIC5015YM 40C to +85C Inverting 8-Pin SOIC MIC5015BN MIC5015YN 40C to +85C Inverting 8-Pin PDIP Block Diagram V+ (1) Charge Pump Gate (5) 15V Source (3) Input (2) * * Only on the inverting version Ground (4) Pin Description Pin Number Pin Name Pin Function 1V+ Supply. Must be decoupled to isolate from large transients caused by the power MOSFET drain. 10F is recommended close to pins 1 and 4. 2 Input Turns on power MOSFET when taken above (or below) threshold (1.0V typical). Pin 2 requires ~ 1A to switch. 3 Source Connects to source lead of power MOSFET and is the return for the gate clamp zener. Pin 3 can safely swing to 20V when turning off inductive loads. 4 Ground 5 Gate Drives and clamps the gate of the power MOSFET. 6, 7, 8 NC Not internally connected. MIC5014/5015 2 June 2005