ML4865ES-2 Micro Linear, ML4865ES-2 Datasheet
ML4865ES-2
Related parts for ML4865ES-2
ML4865ES-2 Summary of contents
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High Voltage High Current Boost Regulator GENERAL DESCRIPTION The ML4865 is a high voltage, continuous conduction boost regulator designed for conversion in multiple cell battery powered systems. Continuous conduction allows the regulator to maximize output current for ...
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ML4865 PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION 1 SENSE Programming pin for setting the output to any value lower than the normal fixed voltage 2 GND Ground 3 V Battery input voltage Boost inductor connection L1 ...
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... Threshold Voltage Input Bias Current Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions. OPERATING CONDITIONS Temperature Range ML4865CS-2 .............................................. 0ºC to 70ºC ML4865ES-2 ............................................ –20ºC to 70ºC V Voltage Range IN Without external rectifier ............................ 1. With external rectifier ................................ 1.8V to 10V = Operating Temperature Range (Note 1) ...
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ML4865 V IN 100µ 150m Figure 2. PFM Regulator Detailed Block Diagram OUT Figure 3. Inductor Current and Voltage Waveforms 4 ML4865 SENSE V OUT GND SHDN ...
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FUNCTIONAL DESCRIPTION The ML4865 combines a unique form of current mode control with a synchronous rectifier to create a boost converter that can deliver high currents while maintaining high efficiency. Current mode control allows the use of a very small, ...
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ML4865 DESIGN CONSIDERATIONS INPUT VOLTAGE RANGE The input voltage range determines whether an external Schottky diode is necessary or optional. If the input voltage lower, the ML4865 can be operated as a stand alone boost regulator with ...
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DESIGN CONSIDERATIONS INDUCTOR SELECTION The ML4865 is able to operate over a wide range of inductor values. A value of 22µH or 33µ good choice, but any value between 15µH and 50µH is acceptable. As the inductor value ...
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ML4865 DESIGN CONSIDERATIONS SHUTDOWN The SHDN pin is a high impedance input and is noise sensitive. Either drive the SHDN input from a low impedance source or bypass the pin to GND with a 10nF ceramic capacitor. SENSE The SENSE ...
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DESIGN EXAMPLE In order to design a boost converter using the ML4865 necessary to define the values of a few parameters. For this example, assume the following design parameters 4.75 to 5.25V 12V ...
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... ORDERING INFORMATION PART NUMBER ML4865CS-2 ML4865ES-2 (Obsolete) © Micro Linear 1998 registered trademark of Micro Linear Corporation. All other trademarks are the property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; ...