MIC5018_06 MICREL | Alldatasheet

Document overview

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Technical content

Features

  • +2.7V to +9V operation
  • 150µA typical supply current at 5V supply
  • ≤1µA typical standby (off) current
  • Charge pump for high-side low-voltage applications
  • Internal zener diode gate-to-ground MOSFET protection
  • Operates in low- and high-side configurations
  • TTL compatible input
  • ESD protected

Applications

  • Battery conservation
  • Power bus switching
  • Solenoid and motion control
  • Lamp control Typical Applications On Off VS CTL G GND MIC50184.7 µF IRFZ24* N-Channe l MOSFET +5V Load* International Rectifier 100m , 17A max. TO-220 package On Off VS CTL G GND MIC50184.7 µF Si9410DY * N-channel MOSFET VLOAD SUPPLY‡ Load+2.7 to +9V ‡ Load voltage limited only by MOSFET drain-to-source rating * Siliconix 30m , 7A max., 30VV DS max. 8-lead SOIC package Low-Voltage High-Side Power Switch Low-Side Power Switch

Micrel, Inc. MIC5018 April 2006 2 M9999-042406 (408) 955-1690

Ordering Information

Standard Pb-Free Standard Pb-Free Temp. Range Package MIC5018BM4 MIC5018YM4 H10 H1 0 –40ºC to +85ºC SOT-143 Pin Configuration GND CTLG VS H10 Part Identification H10Early production identification : MH10 SOT-143 (M4) Pin Description Pin Number Pin Name Pin Function 1 GND Ground: Power return. 2 VS Supply (Input): +2.7V to +9V supply. 3 G Gate (Output): Gate connection to external MOSFET. 4 CTL Control (Input): TTL compatible on/off control input. Logic high drives the gate output above the supply voltage. Logic low forces the gate output near ground.

Micrel, Inc. MIC5018 April 2006 3 M9999-042406 (408) 955-1690 Absolute Maximum Ratings Operating Ratings Package Thermal Resistance SOT-143 (θ

Electrical Characteristics

Parameter Conditions (1) Min Typ Max Units VSUPPLY = 3.3V VCTL = 0V VCTL = 3.3V 0.01 140 µA µA Supply Current VSUPPLY = 5V VCTL = 0V VCTL = 5V 150 300 µA µA 2.7V ≤ VSUPPLY ≤ 9V VCTL for logic 0 input 0 0.8 V 2.7V ≤ VSUPPLY ≤ 5V VCTL for logic 1 input 2.0 V SUPPLY V Control Input Voltage 5V ≤ VSUPPLY ≤ 9V VCTL for logic 1 input 2.4 V SUPPLY V Control Input Current 2.7V ≤ VSUPPLY ≤ 9V 0.01 1 µA Control Input Capacitance (2) 5 pF Zener Diode Output Clamp VSUPPLY = 9V 13 16 19 V VSUPPLY = 2.7V 6.3 7.1 V VSUPPLY = 3.0V 7.1 8.2 V Gate Output Voltage VSUPPLY = 4.5V 11.4 13.4 V Gate Output Current V SUPPLY = 5V VOUT = 10V(3) 9.5 µA Gate Turn-On Time VSUPPLY = 4.5V CL = 1000pF(4) CL = 3000pF(4) 0.75 2.1 1.5 4.2 Ms ms Gate Turn-Off Time VSUPPLY = 4.5V CL = 1000pF(5) CL = 3000pF(5) µs µs Notes: General Note: Devices are ESD protected, however handling precautions are recommended. 1. Typical values at T A = 25°C. Minimum and maximum values indicate performance at –40°C ≥ TA ≥ +85°C. Parts production tested at 25°C. 2. Guaranteed by design. 3. Resistive load selected for V OUT = 10V. 4. Turn-on time is the time required for gate voltage to rise to 4V greater than the supply voltage. This represents a typical MOSFET gate threshold voltage. 5. Turn-off time is the time required for the gate voltage to fa ll to 4V above the supply voltage. This represents a typical MOSFET gate threshold voltage. Test Circuit VS CTL G GND MIC5018 VSUPPLY 4 CL VOUT 0.1 µF

Micrel, Inc. MIC5018 April 2006 4 M9999-042406 (408) 955-1690 Typical Characteristics(4) 0.2 0.4 0.6 0.8 1.0 0246 8 1 0 SUPPLY VOLTAGE (V) Supply Current vs. Supply Voltage -40°C 125°C 25°C Note 4: TA = 25°C, VSUPPLY = 5V unless noted. Note 5: Full turn-on time is the time between VCTL rising to 2.5V and the VG rising to 90% of its steady on-state value. Note 6: Full turn-off time is the time between VCTL falling to 0.5V and the VG falling to 10% of its steady on-state value. 0246 8 1 0 SUPPLY VOLTAGE (V) Gate Output Voltage vs. Supply Voltage 25°C-40°C 125°C

Micrel, Inc. MIC5018 April 2006 5 M9999-042406 (408) 955-1690 Functional Diagram CHARGE PUMP EN VS CTL 15k R1 2k GND G MIC5018 +2.7V to +9V Load On Off 20µA 16V 35V D3 16V Functional Diagram with External Components (High-Side Driver Configuration) Functional Description Refer to the functional diagram. The MIC5018 is a noninverting device. Applying a logic high signal to 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 +2.7V to +9V. An external capacitor is 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 may cause unpredictable operation. A high input turns on Q2, which sinks the output of current source I1, making the input of the first inverter low. The inverter output becomes high enabling the charge pump. Charge Pump The charge pump is enabled when CTL is logic high. The charge pump consists of an oscillator and voltage quadrupler (4×). Output voltage is limited to 16V by a zener diode. The charge pump output voltage will be approximately: V G = 4 × VSUPPLY – 2.8V, but not exceeding 16V The oscillator operates from approximately 70kHz to approximately 100kHz depending upon the supply voltage and temperature. Gate Output The charge pump output is conne cted directly to the G (gate) output. The charge pump is active only when CTL is high. When CTL is low, Q3 is turned on by the second inverter and discharges the gate of the external MOSFET to force it off. If CTL is high, and the voltage applied to VS drops to zero, the gate output will be floating (unpredictable). ESD Protection D1 and D2 clamp positive and negative ESD voltages. R1 isolates the gate of Q2 from sudden changes on the CTL input. Q1 turns on if the emitter (CTL input) is forced below ground to provide additional input protection. Zener D3 also clamps ESD voltages for the gate (G) output.

Micrel, Inc. MIC5018 April 2006 8 M9999-042406 (408) 955-1690

Package Information

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 The 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. © 1997 Micrel, Incorporated.