MIC23051-945YML MICREL [Micrel Semiconductor], MIC23051-945YML Datasheet
MIC23051-945YML
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MIC23051-945YML Summary of contents
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... General Description The Micrel MIC23051 is a high efficiency 600mA PWM synchronous buck (step-down) HyperLight Load™, a patented switching scheme that offers best in class light load efficiency and transient performance while providing components and low output ripple at all loads. The MIC23051 has an output voltage scaling feature that can toggles between two different voltage levels ...
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... Micrel, Inc. Ordering Information Part Number Marking MIC23051-CGYML JCG MIC23051-C4YML JC4 MIC23051-16YML J16 MIC23051-945YML 945 Note 1. Other output voltage combinations (0.72 to 3.3V) available, contact Micrel Marketing for details. ® 2. MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. 3. Over bar symbol ( ¯¯ ) may not be to scale. ...
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... V EN) ) ..................–40°C ≤ .................................................90°C 20mA unless otherwise specified. OUT Min Typ 2.7 2.45 2.55 100 20 0.01 -2.5 -2 0.65 = 3.6V 0.5 0 0.5 0 0.45 0 650 0.5 20 800 800 0.5 35 0.1 165 20 MIC23051 IN ≤ +125°C J Max Units V 5.5 2. µA 35 µ +2 +2.5 % µ Ω Ω MHz MHz µs 1 µs V 1.2 mV µA 2 ° ...
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... Temperature 0.80 0.78 0.76 0.74 0.72 0.70 0.68 0. 3. 1.8V OUT 0.62 No Load 0. TEMPERATURE (°C) Output Voltage vs. Load 1.90 1.85 1.8 1. 3.6V IN 1.70 0 100 200 300 400 500 600 LOAD (mA) 4 MIC23051 Efficiency OUT OUT L = 1µ 100 1000 OUTPUT CURRENT (mA) Switching Frequency vs. Temperature 5.5 5.0 4.5 4.0 3 ...
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... Micrel, Inc. Functional Characteristics July 2009 5 MIC23051 M9999—070809-F ...
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... Micrel, Inc. Functional Characteristics (continued) July 2009 6 MIC23051 M9999—070809-F ...
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... Micrel, Inc. Functional Diagram VSC EN UVLO REFERENCE July 2009 CONTROL LOGIC TIMER & SOFTSTART Current Limit ZERO 1 ERROR COMPARATOR MIC23051 Simplified Block Diagram 7 VIN GATE SW DRIVE ISENSE PGND SNS R15 CFF R17 AGND M9999—070809-F MIC23051 ...
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... July 2009 CFF The CFF pin is connected to the SNS pin of MIC23051 with a feed-forward capacitor of 560pF. The CFF pin itself is compared with the internal reference voltage (V the device and provides the control path to control the output ...
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... Refer to the Application Circuit and Bill of Material for details. DC resistance (DCR) is also important. While DCR is inversely proportional to size, DCR can represent a July 2009 significant Considerations. Compensation The MIC23051 is designed to be stable with a 0.47µH to 2.2µH inductor with a 2.2µF ceramic (X5R) output losing most of their capacitor. Efficiency Considerations Efficiency is defined as the amount of useful output power, divided by the amount of power supplied ...
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... July 2009 . This improves HyperLight Load Mode™ DSON MIC23051 uses a minimum on and off time proprietary control loop. When the output voltage falls below the increasingly critical in regulation threshold, the error comparator begins a switching cycle that turns the PMOS on and keeps it on for the duration of the minimum-on-time ...
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... Micrel, Inc. MIC23051 Typical Application Circuit Bill of Materials Item Part Number C1, C2 C1608X5R0J476K C3 C1608C0G1H561J LQM21PN1R0MC0D LQH32CN1R0M33 LQM31PN1R0M00 L1 CPL2512T1R0M LQM31PNR47M00 MIPF2520D1R5 U1 MIC23051-xxYML Notes: 1. TDK: www.tdk.com 2. Murata: www.murata.com 3. FDK: www.fdk.co.jp 4. Micrel, Inc: www.micrel.com July 2009 Manufacturer (1) TDK 4.7µF Ceramic Capacitor, 6.3V, X5R, Size 0603 ...
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... Micrel, Inc. PCB Layout Recommendations July 2009 Top Layer Bottom Layer 12 MIC23051 M9999—070809-F ...
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... 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 July 2009 8-Pin 2mm x 2mm MLF indemnify Micrel for any damages resulting from such use or sale. © 2007 Micrel, Incorporated. 13 ® (ML) MIC23051 M9999—070809-F ...