ML4875CS-3 MICRO-LINEAR [Micro Linear Corporation], ML4875CS-3 Datasheet
ML4875CS-3
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ML4875CS-3 Summary of contents
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Low Voltage Boost Regulator with Shutdown GENERAL DESCRIPTION The ML4875 is a boost regulator designed for conversion cell battery powered systems. The combination of BiCMOS process technology, internal synchronous rectification, variable frequency operation, ...
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ML4875 PIN CONNECTION PIN DESCRIPTION PIN NO. NAME FUNCTION 1 V Battery input voltage IN 2 SHDN Pulling this pin high shuts down the regulator, isolating the load from the input 3 GND Analog signal ground 4 DETECT When this ...
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... Note 1: Limits are guaranteed by 100% testing, sampling or correlation with worst case test conditions. Lead Temperature (Soldering 10 sec.) ..................... 260°C Thermal Resistance ( OPERATING CONDITIONS Temperature Range ML4875CS-X .............................................. 0°C to 70°C 7V ML4875ES-X ........................................... –20°C to 70°C + 0.3V OUT V Operating Range IN 1.5A ML4875CS-X ................................. 1. 300mA ML4875ES-X .................................. 1. Operating Temperature Range (Note 1). A CONDITIONS – 0.2V IN OUT V = 4.8V, SHDN = V IN ...
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ML4875 V IN START- (Sumida CD75) 100 F V PWR GND IN SHDN RESET GND V L DETECT V OUT 100 F Figure 1. Application Test Circuit ...
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FUNCTIONAL DESCRIPTION The ML4875 combines Pulse Frequency Modulation (PFM) and synchronous rectification to create a boost converter that is both highly efficient and simple to use. A PFM regulator charges a single inductor for a fixed period of time and ...
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ML4875 ML4875-5 15µH 400 300 200 100 0 0 1.0 2.0 3.0 4.0 V (V) IN tolerances. Assuming that 2V is the end of life voltage of a two cell input, Figure 4 shows that with a 2V ...
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ML4875-5.0 100 1.0 2.0 3.0 V (V) IN OUTPUT CAPACITOR The choice of output capacitor is also important controls the output ripple and optimizes the efficiency of the circuit. Output ripple is ...
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ML4875 INPUT CAPACITOR Unless the input source is a very low impedance battery, it will be necessary to decouple the input with a capacitor with a value of between 47µF and 100µF. This provides the benefits of preventing input ripple ...
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TABLE 1. MAXIMUM OUTPUT CURRENT AND EFFICIENCY. ML4875-5.0 V (V) I (mA OUT L = 15µH 1.0 237.5 35.7 1.5 373.3 86.2 2.0 494.6 151.8 2.5 616.0 233.5 3.0 710.5 319.7 3.5 793.9 410 27µH ...
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... ML4875 PHYSICAL DIMENSIONS ORDERING INFORMATION PART NUMBER ML4875CS-T (Obsolete) ML4875CS-3 ML4875CS-5 ML4875ES-T ML4875ES-3 (End Of Life) ML4875ES-5 (End Of Life) © Micro Linear 1996 is a registered trademark of Micro Linear Corporation Products described in this document may be covered by one or more of the following patents: 4,897,611; 4,964,026; ...