MIC4742YTSE Micrel Inc, MIC4742YTSE Datasheet

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... All support documentation can be found on Micrel’s web site at: www.micrel.com. Typical Application 2A 2MHz Dual Buck Regulator MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( March 2009 MIC4742 2 MHz Dual 2A Integrated Switch Buck Regulator Features • ...

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... Micrel, Inc. Ordering Information Part Number MIC4742YML MIC4742YTSE Note: ® MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. Pin Configuration 16-Pin 3mm x 3mm MLF March 2009 Voltage Junction Temp. Range Adj. –40° to +125°C Adj. –40° to +125°C ® ...

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Micrel, Inc. Pin Description Pin Number Pin Number ® (MLF ) (EPAD-TSSOP (1) ( 3,4 9, 6,15 5,12 7,14 4, 9,10 15,16 (1) ( ...

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Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ......................................... -0.3V to +6V IN Output Switch Voltage (V V SW1, SW2 Output Switch Current (I I )………...Internally Limited SW1, SW2 Input Voltage ( .......................-0.3V to ...

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Micrel, Inc. Typical Characteristics 3.3Vin 1.0Vout Efficiency 3.0Vin 64 3.3Vin 62 3.6Vin 60 0 0.4 0.8 1.2 1.6 OUTPUT CURRENT (A) 5.0Vin 1.2Vout Efficiency ...

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Micrel, Inc. Typical Characteristics (continue) Line Regulation 0.9950 0.9948 0.9946 0.9944 0.9942 0.9940 0.9938 0.9936 0.9934 0.9932 0.9930 2.9 3.3 3.7 4.1 4.5 4.9 5.3 SUPPLY VOLTAGE (V) Feedback Voltage vs. Supply Voltage 0.8 0.6 0.4 0.2 0 ...

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Micrel, Inc. Functional Characteristics March 2009 7 MIC4742 M9999-030209-D ...

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Micrel, Inc. Functional Diagram March 2009 MIC4742 Block Diagram 8 MIC4742 M9999-030209-D ...

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Micrel, Inc. Pin Description VIN1/VIN2 VIN pins (two pins for VIN1 and two pins for VIN2) provide power to the source of the internal P-channel MOSFET along with the current limiting sensing. VIN1 pins and VIN2 pins are internally connected ...

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Micrel, Inc. Application Information The MIC4742 is a dual 2A PWM non-synchronous buck regulator. By switching an input voltage supply, and filtering the switched voltage through an inductor and capacitor, a regulated DC voltage is obtained. Figure 1 shows a ...

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Micrel, Inc. ( − OUT = + OUT × 2 fsw Figure 4 demonstrates the off-time. During the off-time, the high-side internal P-channel MOSFET turns off. Since the current in the inductor has to ...

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Micrel, Inc. Where D is the duty cycle. Since the MIC4742 uses an internal P-channel MOSFET, Rdson losses are inversely proportional to supply voltage. Higher supply voltage yields a higher gate to source voltage, reducing the Rdson, reducing the MOSFET ...

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Micrel, Inc. Component Selection Input Capacitor A 10µF ceramic is recommended on each VIN pin for bypassing. X5R or X7R dielectrics are recommended for the input capacitor. Y5V dielectrics lose most of their capacitance over temperature and are therefore, not ...

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Micrel, Inc. Loop Stability and Bode Analysis Bode analysis is an excellent way to measure small signal stability and loop response in power supply designs. Bode analysis monitors gain and phase of a control loop. This is done by breaking ...

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Micrel, Inc. Gain and Phase vs. Frequency 0 -5 -10 -15 -20 100 1000 10000 FREQUENCY (Hz) The graph above shows the effects on the gain and phase of the system caused by feedback resistors and a feedforward capacitor. The ...

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Micrel, Inc. Ripple Measurements To properly measure ripple on either input or output of a switching regulator, a proper ring in tip measurement is required. Standard oscilloscope probes come with a grounding clip long wire with an alligator ...

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Micrel, Inc. Bill of Materials Item Part Number C11,C12 GRM188R60J106M C21,C22 C1608X5R0J106M 06036D106KMAT2A C13*,C23* VJ0603A681KXXCW C14,C24 VJ0603A820KXXCW C15,C25 GRM188R60J475K C1608 X5R0J475M 0603D475MAT C16,C26,C7 VJ0603Y104KXXAT C18,C28 D1,D2 SS2P3L SSA23L B230A L1,L2 IHLP2525AH-01 1R0 RLF7030-1R0 N HCP0703-1R0 R11,R12 CRCW060310K0FKXX R12,R22 CRCW06033K16FKXX CRCW06034K99FKXX ...

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Micrel, Inc. Item Part Number R13*, R23* CRCW06032R70FKXX R14, R24 CRCW060349K9FKXX R5 CRCW060310R0FKXX U1 MIC4742YML Notes: 1. Murata: www.murata.com 2. TDK: www.tdk.com 3. AVX: www.avx.com 4. Vishay: www.vishay.com 5. Cooper: www.cooperbussmann.com 6. Diode: www.diodes.com 7. Micrel, Inc : www.micrel.com * ...

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Micrel, Inc. MIC4742YML Layout Recommendation: 2A Evaluation Board March 2009 Recommended TOP Layout Recommended Bottom Layout 19 MIC4742 M9999-030209-D ...

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Micrel, Inc. March 2009 Recommended Mid-Layer 1 Layout Recommended Mid-Layer 2 Layout 20 MIC4742 M9999-030209-D ...

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Micrel, Inc. Package Information March 2009 ® 16-Pin 3mm x 3mm MLF (ML) 21 MIC4742 M9999-030209-D ...

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Micrel, Inc. March 2009 16-Pin ETSSOP 22 MIC4742 M9999-030209-D ...

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Micrel, Inc. 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 ...