MIC4416

MIC4416_05 MICREL | Alldatasheet

Document overview

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Technical content

Features

• +4.5V to +18V operation
• Low steady-state supply current 50µA typical, control input low 370µA typical, control input high
• 1 .2A nominal peak output 3.5Ω typical output resistance at 18V supply 7.8Ω typical output resistance at 5V supply
• 25mV maximum output offset from supply or ground
• Operates in low-side switch circuits
• TTL-compatible input withstands –20V
• ESD protection
• I nverting and noninverting versions

Applications

• Battery conservation
• Solenoid and motion control
• Lamp control
• Switch-mode power supplies MIC4416/4417 IttyBitty™ Low-Side MOSFET Driver General Description The MIC4416 and MIC4417 IttyBitty™ low-side MOSFET drivers are designed to switch an N-channel enhancement- type MOSFET from a TTL-compatible control signal in low- side switch applications. The MIC4416 is noninverting and the MIC4417 is inverting. These drivers feature short delays and high peak current to produce precise edges and rapid rise and fall times. Their tiny 4-lead SOT-143 package uses minimum space. The MIC4416/7 is powered from a +4.5V to +18V supply voltage. The on-state gate drive output voltage is approxi- mately equal to the supply voltage (no internal regulators or clamps). High supply voltages, such as 10V, are appropriate for use with standard N-channel MOSFETs. Low supply voltages, such as 5V, are appropriate for use with logic-level N-channel MOSFETs. In a low-side configuration, the driver can control a MOSFET that switches any voltage up to the rating of the MOSFET. The MIC4416 is available in the SOT-143 package and is rated for –40°C to +85°C ambient temperature range. Typical Application On Off VS CTL G GND MIC4416 4.7µF Si9410DY* N-channel MOSFET Load Voltage† Load +12V † Load voltage limited only by MOSFET drain-to-source rating *S iliconix 30mΩ, 7A max. 0.1µF Low-Side Power Switch Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

MIC4416/4417 Micrel, Inc. MIC4416/4417 2 May 2005 Pin Configuration GND CTLVS G Dxx Part Identification SOT-143 (M4) Pin Description Pin Number Pin Name Pin Function 1 GND Ground: Power return. 2G Gate (Output) : Gate connection to external MOSFET. 3V S Supply (Input): +4.5V to +18V supply. 4 CTL Control (Input): TTL-compatible on/off control input. MIC4416 only: Logic high forces the gate output to the supply voltage. Logic low forces the gate output to ground. MIC4417 only: Logic high forces the gate output to ground. Logic low forces the gate output to the supply voltage. Part Number Marking Code* Temperature Standard Pb-Free Standard Pb-Free Range Configuration Package MIC4416BM4 MIC4416YM4 D10 D10 –40ºC to +85ºC Non-Inverting SOT-143 MIC4417BM4 MIC4417YM4 D11 D11 –40ºC to +85ºC Inverting SOT-143 *Under bar symbol (_) may not be to scale.

MIC4416/4417 Micrel, Inc. Electrical Characteristics(Note 3) Parameter Condition (Note 1) Min Typ Max Units Supply Current 4.5V ≤ VS ≤ 18V V CTL = 0V 50 200 µA VCTL = 5V 370 1500 µA Control Input Voltage 4.5V ≤ VS ≤ 18V V CTL for logic 0 input 0.8 V VCTL for logic 1 input 2.4 V Control Input Current 0V ≤ VCTL ≤ VS –10 10 µA Delay Time, VCTL Rising V S = 5V C L = 1000pF, Note 2 42 ns VS = 18V C L = 1000pF, Note 2 33 60 ns Delay Time, VCTL Falling V S = 5V C L = 1000pF, Note 2 42 ns VS = 18V C L = 1000pF, Note 2 23 40 ns Output Rise Time V S = 5V C L = 1000pF, Note 2 24 ns VS = 18V C L = 1000pF, Note 2 14 40 ns Output Fall Time V S = 5V C L = 1000pF, Note 2 28 ns VS = 18V C L = 1000pF, Note 2 16 40 ns Gate Output Offset Voltage 4.5V ≤ VS ≤ 18V V G = high –25 mV VG = low 25 mV Output Resistance V S = 5V, IOUT = 10mA P-channel (source) MOSFET 7.6 Ω N-channel (sink) MOSFET 7.8 Ω VS = 18V, IOUT = 10mA P-channel (source) MOSFET 3.5 10 Ω N-channel (sink) MOSFET 3.5 10 Ω Gate Output Reverse Current No latch up 250 mA General Note: Devices are ESD protected, however handling precautions are recommended. Note 1: Typical values at TA = 25°C. Minimum and maximum values indicate performance at –40°C ≥ TA ≥ +85°C. Parts production tested at 25°C. Note 2: Refer to “MIC4416 Timing Definitions” and “MIC4417 Timing Definitions” diagrams (see next page). Note 3: Specification for packaged product only. Absolute Maximum Ratings Operating Ratings (soldered to 0.25in2 copper ground plane)

MIC4416/4417 Micrel, Inc. MIC4416/4417 4 May 2005 Definitions VS CTL G GND MIC4416/7 VSUPPLY VOUT ≈ VSUPPLY Source State (P-channel on, N-channel off) IOUTISUPPLY VS CTL G GND MIC4416/7 VSUPPLY VOUT ≈ GND Sink State (P-channel off, N-channel on) IOUTISUPPLY MIC4416 = high MIC4417 = low MIC4416 = low MIC4417 = high MIC4416/MIC4417 Operating States 90% 10% rise time 10% fall time VS OUTPUT INPUT 90% delay time delay time pulse width 2.5V MIC4416 (Noninverting) Timing Definitions delay time 90% 10% rise time 10% delay time fall time VS OUTPUT INPUT 90% 2.5V pulse width MIC4417 (Inverting) Timing Definitions Test Circuit VS CTL G GND MIC4416/7 VSUPPLY 4 CL VOUT

MIC4416/4417 Micrel, Inc. 0369 1 2 1 5 1 8 TIME (ns) SUPPLY VOLTAGE (V) Rise and Fall Time vs. Supply Voltage FALL RISE fCTL = 1MHz -60 -30 0 30 60 90 120 150 TIME (ns) TEMPERATURE (°C) Rise and Fall Time vs. Temperature RISE VSUPPLY = 5V fCTL = 1MHz FALL -60 -30 0 30 60 90 120 150 TIME (ns) TEMPERATURE (°C) Rise and Fall Time vs. Temperature RISE VSUPPLY = 18V fCTL = 1MHz FALL Typical Characteristics Note 3 100 200 300 400 500 0369 1 2 1 5 1 8 SUPPLY CURRENT (µA) SUPPLY VOLTAGE (V) Quiescent Supply Current vs. Supply Voltage VCTL = 5V VCTL = 0V 0.1 100 11 0 100 SUPPLY CURRENT (mA) CAPACITANCE (nF) Supply Current vs. Load Capacitance VSUPPLY = 5V 100kHz 10kHz 1MHz 0.1 100 100 1000 2000 SUPPLY CURRENT (mA) FREQUENCY (kHz) Supply Current vs. Frequency VSUPPLY = 18V 0.01 0.1 100 11 0 100 TIME (µs) CAPACITANCE (nF) Output Rise and Fall Time vs. Load Capacitance FALL RISE VSUPPLY = 5V fCTL = 50kHz 0369 1 2 1 5 1 8 TIME (ns) SUPPLY VOLTAGE (V) Delay Time vs. Supply Voltage VCTL RISE VCTL FALL -60 -30 0 30 60 90 120 150 TIME (ns) TEMPERATURE (°C) Delay Time vs. Temperature VSUPPLY = 5V VCTL RISE VCTL FALL -60 -30 0 30 60 90 120 150 TIME (ns) TEMPERATURE (°C) Delay Time vs. Temperature VSUPPLY = 18V VCTL RISE VCTL FALL 0.1 100 11 0 100 SUPPLY CURRENT (mA) CAPACITANCE (nF) Supply Current vs. Load Capacitance VSUPPLY = 18V 100kHz 10kHz 1MHz 0.01 0.1 11 0 100 TIME (µs) CAPACITANCE (nF) Output Rise and Fall Time vs. Load Capacitance FALL RISE VSUPPLY = 18V fCTL = 50kHz

MIC4416/4417 Micrel, Inc. MIC4416/4417 6 May 2005 200 400 600 800 1000 1200 02 0 4 06 08 0 1 0 0 VOLTAGE DROP (mV) OUTPUT CURRENT (mA) Output Voltage Drop vs. Output Source Current VSUPPLY = 5V 18V NOTE 4 200 400 600 800 1000 1200 02 0 4 06 08 0 1 0 0 VOLTAGE DROP (mV) OUTPUT CURRENT (mA) Output Voltage Drop vs. Output Sink Current VSUPPLY = 5V 18V NOTE 5 100 200 300 400 500 600 0369 1 2 1 5 1 8 HYSTERESIS (mV) SUPPLY VOLTAGE (V) Control Input Hysteresis vs. Supply Voltage 0369 1 2 1 5 1 8 ON RESISTANCE (Ω) SUPPLY VOLTAGE (V) Output Source Resistance IOUT = 10mA 200 400 600 800 -60 -30 0 30 60 90 120 150 HYSTERESIS (mV) TEMPERATURE (°C) Control Input Hysteresis vs. Temperature VSUPPLY = 18V -60 -30 0 30 60 90 120 150 ON-RESISTANCE (Ω) TEMPERATURE (°C) Output Source Resistance vs. Temperature VSUPPLY = 5V IOUT ≈ 3mA VSUPPLY = 18V IOUT ≈ 3mA 0369 1 2 1 5 1 8 ON RESISTANCE (Ω) SUPPLY VOLTAGE (V) Output Sink Resistance IOUT = 10mA -60 -30 0 30 60 90 120 150 ON-RESISTANCE (Ω) TEMPERATURE (°C) Output Sink Resistance vs. Temperature VSUPPLY = 5V IOUT ≈ 3mA VSUPPLY = 18V IOUT ≈ 3mA 0.5 1.0 1.5 2.0 2.5 0369 1 2 1 5 1 8 CURRENT (A) SUPPLY VOLTAGE (V) Peak Output Current vs. Supply Voltage Sink NOTE 7 Source NOTE 6 0.1 100 1x102 1x103 1x104 1x105 1x106 1x107 SUPPLY CURRENT (mA) FREQUENCY (Hz) Supply Current vs. Frequency 0pF 1,000pF 2,000pF 5,000pF CL = 10,000pF VSUPPLY = 5V 0.1 100 1x102 1x103 1x104 1x105 1x106 1x107 SUPPLY CURRENT (mA) FREQUENCY (Hz) Supply Current vs. Frequency 0pF 1,000pF 2,000pF 5,000pF CL = 10,000pF VSUPPLY = 18V Note 3: Typical Characteristics at TA = 25°C, VS = 5V, CL = 1000pF unless noted. Note 4: Source-to-drain voltage drop across the internal P-channel MOSFET = V S – VG. Note 5: Drain-to-source voltage drop across the internal N-channel MOSFET = VG – VGND. (Voltage applied to G.) Note 6: 1µs pulse test, 50% duty cycle. OUT connected to GND. OUT sources current. (MIC4416, V CTL = 5V; MIC4417, VCTL = 0V) Note 7: 1µs pulse test, 50% duty cycle. VS connected to OUT. OUT sinks current. (MIC4416, V CTL = 0V; MIC4417, VCTL = 5V)

MIC4416/4417 Micrel, Inc. Functional Description Refer to the functional diagram. The MIC4416 is a noninverting driver. A logic high on the CTL (control) input produces gate drive output. The MIC4417 is an inverting driver. A logic low on the CTL (control) input produces gate drive output. The G (gate) output is used to turn on an external N-channel MOSFET. Supply VS (supply) is rated for +4.5V to +18V. External capacitors are recommended to decouple noise. Control CTL (control) is a TTL-compatible input. CTL 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, when CTL is rising, is slightly higher than the control threshold voltage when CTL is falling. When CTL is low, Q2 is on, which applies the additional 0.6mA current source to Q1. Forcing CTL 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. Functional Diagram Logic-Level Input VS CTL G MIC4417 INVERTING MIC4416 NONINVERTING 0.3mA 0.6mA GND Load VSWITCHED VSUPPLY D1 D4 D5D3 35V Functional Diagram with External Components 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 manu- factured in inverting and noninverting versions. The last inverter functions as a driver for the output MOSFETs Q3 and Q4. Gate Output G (gate) is designed to drive a capacitive load. V G (gate output voltage) is either approximately the supply voltage or approximately ground, depending on the logic state applied to CTL. If CTL is high, and VS (supply) drops to zero, the gate output will be floating (unpredictable). ESD Protection D1 protects VS from negative ESD voltages. D2 and D3 clamp positive and negative ESD voltages applied to CTL. R1 isolates the gate of Q1 from sudden changes on the CTL input. D4 and D5 prevent Q1’s gate voltage from exceeding the supply voltage or going below ground.

MIC4416/4417 Micrel, Inc. MIC4416/4417 10 May 2005

Package Information

0.150 (0.0059) 0.089 (0.0035)8° 0.400 (0.016) TYP 3 PLACES 2.50 (0.098) 2.10 (0.083) 1.40 (0.055) 1.20 (0.047) 0.950 (0.0374) TYP 3.05 (0.120) 2.67 (0.105) 0.800 (0.031) TYP 1.12 (0.044) 0.81 (0.032) 0.10 (0.004) 0.013 (0.0005) DIMENSIONS: MM (INCH) 0.41 (0.016) 0.13 (0.005) CL CL 4-Pin SOT-143 (M4) 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 This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. 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. © 2001 Micrel Incorporated