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Technical content
Features
Ultra-small 4-pin 1.2mm x 1.2mm thin QFN package +4.5V to +18V operating supply voltage range 1.5A peak current – 3.5 Ω output resistance at 18V – 9 Ω output resistance at 5V Low steady-state supply current – 77µA control input low – 445µA control input high 12ns rise and fall times into 1000pF load MIC4414 (non-inverting) MIC4415 (inverting) -40°C to +125°C junction temperature range
Applications
Switch mode power supplies Solenoid drivers Motor driver Typical Application
Micrel, Inc. MIC4414/MIC4415 August 2012 2 M9999-080112-A
Ordering Information
Part Number Marking Configuration Package Junction Temperature Range Lead Finish MIC4414YFT D9 Non-Inverting 4-pin 1.2mm x 1.2mm Thin QFN -40°C to +125°C Pb-Free MIC4415YFT D8 Inverting 4-pin 1.2mm x 1.2mm Thin QFN -40°C to +125°C Pb-Free Note: 1.Thin QFN pin 1 identifier = “▲” Pin Configuration 1.2mm x 1.2mm Thin QFN (Top View) Pin Description Pin Number Pin Name Pin Function 1 OUT Gate Output: Connection to gate of external MOSFET. 2 GND Ground. 3 IN Control Input: MIC4414: Logic high drives the gate output above the supply voltage. Logic low forces the gate output near ground. Do not leave floating. MIC4415: Logic low drives the gate output above the supply voltage. Logic high forces the gate output near ground. Do not leave floating. 4 VDD Supply Voltage: +4.5V to +18V supply.
Micrel, Inc. MIC4414/MIC4415 August 2012 3 M9999-080112-A Absolute Maximum Ratings(1) Operating Ratings(3) Thermal Resistance Electrical Characteristics(4) 4.5V VDD 18V, CL = 1000pF; TA = 25°C, Bold values indicate 40°C ≤ TJ ≤ +125°C. Parameter Condition Min Typ Max Units MIC4414: IN = 0V, VDD = 18V MIC4415: IN = 5V, VDD = 18V 77 200 Supply Current MIC4414: IN = 5V, VDD = 18V MIC4415: IN = 0V, VDD = 18V 445 1500 µA IN = Logic Low 0.8 V IN Voltage IN = Logic High 3 V IN Current 0V VIN VDD -10 +10 µA VDD = 5V, CL = 1000pF 30 Output Rise Time VDD = 18V, CL = 1000pF 12 ns VDD = 5V, CL = 1000pF 33 Output Fall Time VDD = 18V, CL = 1000pF 12 ns VDD = 5V, CL = 1000pF 52 Delay Time, IN Rising VDD = 18V, CL = 1000pF 29 ns VDD = 5V, CL = 1000pF 58 Delay Time, IN Falling VDD = 18V, CL = 1000pF 30 ns OUT = High -25 Output Offset Voltage OUT = Low 25 mV Source 9 VDD = 5V, IOUT = 10mA Sink 9 Source 3.5 10 Output Resistance VDD = 18V, IOUT = 10mA Sink 3.5 10 Ω Output Reverse Current 250 mA Notes: 1. Exceeding the absolute maximum rating may damage the device. 3. The device is not guaranteed to function outside operating range. 4. Specification for packaged product only.
Micrel, Inc. MIC4414/MIC4415 August 2012 4 M9999-080112-A Timing Diagram Source State Sink State (P-Channel On, N-Channel Off) (P-Channel Off, N-Channel On) MIC4414/MIC4415 Operating States MIC4414 (Non-Inverting) MIC4415 (Inverting)
Micrel, Inc. MIC4414/MIC4415 August 2012 5 M9999-080112-A Typical Characteristics MIC4414 ON IN=5V, OFF IN=0V. MIC4415 ON IN=0V, OFF IN=5V. Supply Current vs. Supply Voltage 100 200 300 400 500 0 3 6 9 12 15 18 SUPPLY VOLTAGE (V) SUPPLY CURRENT (µA) IN = ON IN = OFF IN Bias Current vs. Supply Voltage 0.2 0.4 0.6 0.8 0 3 6 9 12 15 18 SUPPLY VOLTAGE (V) IN BIAS CURRENT (µA) IN = ON Output Source Resistance vs. Supply Voltage 0369 1 2 1 5 1 8 SUPPLY VOLTAGE (V) ON RESISTANCE (Ω) IOUT = 10mA Output Sink Resistance vs. Supply Voltage 0369 1 2 1 5 1 8 SUPPLY VOLTAGE (V) ON RESISTANCE (Ω) IOUT = 10mA Rise and Fall Time vs. Supply Voltage 0 3 6 9 12 15 18 SUPPLY VOLTAGE (V) TIME (ns) CL =1000pF IN = 1MHz, 50% DUTY CYCLE FALL RISE Delay Time vs. Supply Voltage 0 3 6 9 12 15 18 SUPPLY VOLTAGE (V) DELAY TIME (ns)IN RISE IN FALL Peak Output Current vs. Supply Voltage 0.0 0.6 1.2 1.8 2.4 3.0 0 3 6 9 12 15 18 SUPPLY VOLTAGE (V) CURRENT (A) SOURCE SINK Supply Current vs. Temperature 100 200 300 400 500 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) SUPPLY CURRENT (µA) VDD = 5V, IN = ON VDD = 18V, IN = ON VDD = 5V, IN = OFF VDD = 18V, IN = OFF Output Source Resistance vs. Temperature -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) ON-RESISTANCE (Ω) VDD = 5V IOUT = 3mA VDD = 18V IOUT = 3mA
Micrel, Inc. MIC4414/MIC4415 August 2012 6 M9999-080112-A Typical Characteristics (Continued) MIC4414 ON IN=5V, OFF IN=0V. MIC4415 ON IN=0V, OFF IN=5V. Output Sink Resistance vs. Temperature -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) ON-RESISTANCE (Ω) VDD = 5V IOUT = 3mA VDD = 18V IOUT = 3mA Rise and Fall Time vs. Temperature -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) TIME (ns) FALL RISE VDD = 5V IN = 1MHz, 50% DUTY CYCLE CL =1000pF Rise and Fall Time vs. Temperature -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) TIME (ns) VDD = 18V IN = 1MHz, 50% DUTY CYCLE CL =1000pF RISE FALL Delay Time vs. Temperature -50 -20 10 40 70 100 130 TEMPERATURE (°C) TIME (ns) VDD = 5V IN FALL IN RISE Delay Time vs. Temperature -50 -20 10 40 70 100 130 TEMPERATURE (°C) TIME (ns) VDD = 18V IN RISE IN FALL Supply Current vs. Load Capacitance 0.1 100 1 10 100 CAPACITANCE (nF) SUPPLY CURRENT (mA) VDD = 5V DUTY CYCLE = 50% IN = 1MHz IN = 10kHz IN = 100kHz Supply Current vs. Load Capacitance 0.1 100 1 10 100 CAPACITANCE (nF) SUPPLY CURRENT (mA) VDD = 18V Duty Cycle = 50% IN = 1MHz IN = 100kHz IN = 10kHz Output Rise and Fall Time vs. Load Capacitance 0.01 0.1 100 1 10 100 CAPACITANCE (nF) TIME (µs) VDD = 5V IN = 1kHz, 50% DUTY CYCLE FALL RISE Output Rise and Fall Time vs. Load Capacitance 0.01 0.1 100 1 10 100 CAPACITANCE (nF) TIME (µs) VDD = 18V IN = 1kHz; 50% DUTY CYCLE RISE FALL
Micrel, Inc. MIC4414/MIC4415 August 2012 7 M9999-080112-A Typical Characteristics (Continued) MIC4414 ON IN=5V, OFF IN=0V. MIC4415 ON IN=0V, OFF IN=5V. VDD Supply Current vs. Frequency 0.1 100 0 1 10 100 1000 10000 IN FREQUENCY (kHz) VDD SUPPLY CURRENT (mA) VDD = 5V CL = 0pF CL = 1000pF CL = 2000pF CL = 5000pF CL = 10000pF VDD Supply Current vs. Frequency 0.1 100 0 1 10 100 1000 10000 IN FREQUENCY (kHz) VDD SUPPLY CURRENT (mA) VDD = 18V CL = 10000pF CL = 5000pF CL = 2000pF CL = 1000pF CL = 0pF
Micrel, Inc. MIC4414/MIC4415 August 2012 8 M9999-080112-A Functional Diagram Functional Description The MIC4414 is a non-inverting driver. A logic high on the IN (control) pin produces gate drive output. The MIC4415 is an inverting driver. A logic low on the IN (control) pin produces gate drive output. The OUT is used to turn on an external N-channel MOSFET. The OUT pin will be driven to 0V or VDD depending on the status of IN pin. VDD VDD (supply) is rated for +4.5V to +18V. External capacitors are recommended to decouple noise. IN IN must be forced high or low by an external signal. A floating input will cause unpredictable operation. A high input turns on Q1, which sinks the output of the 0.3mA and the 0.6mA current source, forcing the input of the first inverter low. Hysteresis The control threshold voltage, wh en IN is rising, is slightly higher than the control threshold voltage when IN is falling. When IN is low, Q2 is on, which applies the additional 0.6mA current source to Q1. Forcing IN high turns on Q1 which must sink 0.9mA from the two current sources. The higher current through Q1 causes a larger drain-to-source voltage drop across Q1. A slightly higher control voltage is required to pull the input of the first inverter down to its threshold. Q2 turns off after the first inverter output goes high. This reduces the current through Q1 to 0.3mA. The lower current reduces the drain-to-source voltage drop across Q1. A slightly lower control voltage will pull the input of the first inverter up to its threshold. Drivers The second (optional) inverter permits the driver to be manufactured in inverting and non-inverting versions. The last inverter functions as a driver for the output MOSFETs Q3 and Q4. OUT OUT is designed to drive a capacitive load. The OUT voltage is either approximat ely the supply voltage or approximately ground, depending on the logic state applied to IN. If IN is high, and VDD (supply) drops to zero, the gate output will be floating (unpredictable). ESD Protection D1 protects VDD from negative ESD voltages. D2 and D3 clamp positive and negative ESD voltages applied to IN. R1 isolates the gate of Q1 from sudden changes on the IN pin. D4 and D5 prevent Q1’s gate voltage from exceeding the supply voltage or going below ground.
Micrel, Inc. MIC4414/MIC4415 August 2012 11 M9999-080112-A When the MOSFET is driven off, the slower rise occurs because the MOSFET’s output capacitance recharges through the load resistance (RC circuit). A lower load resistance allows the output to rise faster. For the fastest driver operation, choose the smallest power MOSFET that will safely handle the desired voltage, current, and safety margin. The smallest MOSFETs generally have the lowest capacitance.
Micrel, Inc. MIC4414/MIC4415 August 2012 12 M9999-080112-A Evaluation Board Schematic Bill of Materials Item Part Number Manufacturer Description Qty. C1 GRM188R71E104KA01D Murata (1) 0.1µF/25V Ceramic Capacitor, X7R, Size 0603 1 C2012X5R1E475K TDK (2) GRM21BR61E475KA12L Murata C2 08053D475KAT2A AVX (3) 4.7µF/25V Ceramic Capacitor, X5R, Size 0805 1 C3 (OPEN) Used as gate Capacitor, different values Q1 (OPEN) U1 MIC4414YFT MIC4415YFT Micrel, Inc.(4) 1.5A/4.5V to 18V Low Side MOSFET Driver 1 Notes: 1. Murata: www.murata.com. 2. TDK: www.tdk.com. 3. AVX: www.avx.com.
Micrel, Inc. MIC4414/MIC4415 August 2012 14 M9999-080112-A
Package Information
4-Pin 1.2mm x 1.2mm Thin QFN (FT) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2012 Micrel, Incorporated.