MIC2145BML Micrel Inc, MIC2145BML Datasheet

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... MSOP-8 and 3mm×3mm MLF™-10L Applications • Flash LED driver • LCD bias supply • White LED driver • DSL bias supply • Local conversion Ordering Information Part Number Standard Pb-Free MIC2145BMM MIC2145YMM MIC2145BML MIC2145YML L1 10µ OUT EN SW 10V/150mA 4 ...

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MIC2145 Pin Configuration RSET 3 PGND 4 8-Lead MSOP (MM) Pin Description Pin Number Pin Number Pin Name MSOP MLF ...

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MIC2145 Absolute Maximum Ratings Supply Voltage (V ) .................................................... 18V DD Switch Voltage (V ) .................................................... 18V SW Feedback Voltage (V ) ................................................ 18V FB Switch Current (I ) ........................................................ 2A SW Enable Voltage(V ), Note 5 ........................................ 18V EN ...

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MIC2145 Typical Characteristics Efficiency-Basic Configuration 100 3. 10V OUT L = 10µH 50 OUTPUT CURRENT (A) Line Regulation 16.0 15.8 15.6 15 10mA OUT 15.2 15.0 14.8 14.6 14.4 ...

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MIC2145 Soft Start Current vs. Temperature 3. -40 - 100 TEMPERATURE (°C) April 2005 Peak Current Limit vs. Temperature 1 200 1.3 ...

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MIC2145 Functional Diagram RSET 3 R SET Thermal Shutdown EN On(/Off) 1 M9999-042205 VDD 6 Current Limit Comparator Soft One Shot Start 800nS Feedback Comparator / Figure 1. Block Diagram ...

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MIC2145 Functional Description See “Application Information” for component selection and pre-designed circuits. Overview The MIC2145 is a 2.5W boost regulator with programmable peak current limit and a constant off time. Quiescent current for the MIC2145 is typically 200µA when the ...

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MIC2145 Application Information Pre-designed circuit information is at the end of this section. Output Voltage The output voltage of the regulator can be set between 2.4V and 16V by connecting a resistor divider at the FB pin. The resistor values ...

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MIC2145 Bootstrap A bootstrapped configuration is recommended for applica- tions that require high efficiency at heavy loads (>70mA). This is achieved by connecting the 3.6V C1 10µF/6.3V Murata GRM42-6 X5R 106K 6 3.6V C1 10µF/6.3V ...

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MIC2145 Inductor The MIC2145 has a programmable peak current to allow the usage of small surface mount inductors. A 10µH or 4.7µH inductor is recommended for most portable applications such as powering white LEDs and biasing LCD panels. The V ...

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MIC2145 Diode A Schottky diode should be used for the output diode. Most of the application circuits on this data sheet specify the Motorola MBR0530 surface mount Schottky diode. It has a forward current of 0.5A and a low forward ...

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MIC2145 Pre-designed Application Circuits V IN 3.0V-5.0V C1 10µF/6.3V Murata GRM42-6 X5R 106K 6.3 JP1 R1 R2 100k 10k Figure 8. White LED Driver Application (Drives LEDs in Parallel) M9999-042205 L1 10µH Sumida CR32-100 D1 On Semiconductor ...

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MIC2145 V IN 3.0V-5.0V C1 10µF/6.3V Murata GRM42-6 X5R 106K 6.3 Figure 9. LCD Application — Bootstrap Configuration April 2005 L1 10µH Sumida CR32-100 D1 On Semiconductor MBR0530T1 PGND SW JP1 EN VDD MIC2145 FB RSET SS SGND R1 R2 ...

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MIC2145 V IN 3.0V-5.0V C1 10µF/6.3V Murata GRM42-6 X5R 106K 6.3 JP1 R1 R2 100k 10k M9999-042205 L1 10µH Sumida CR32-100 D1 On Semiconductor MBR0530T1 PGND SW EN VDD 100pF MIC2145 FB RSET R3 78.7k SS SGND ...

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... MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL 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. ...