LM3420AM5-4.2 National Semiconductor, LM3420AM5-4.2 Datasheet
LM3420AM5-4.2
Specifications of LM3420AM5-4.2
LM3420AM5-4.2
LM3420AM5-4.2TR
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LM3420AM5-4.2 Summary of contents
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... LM3420 allows for precision end-of- charge control for Lithium-Ion rechargeable batteries. Typical Application and Functional Diagram SIMPLE SWITCHER ® registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation The LM3420 is available in a sub-miniature 5-lead SOT23-5 surface mount package thus allowing very compact designs. Features ...
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Connection Diagrams and Order Information 5-Lead Small Outline Package (M5) *No internal connection, but should be soldered to PC board for best heat transfer. Top View For Ordering Information See Figure 1 in this Data SheetSee NS Package Number MF05A ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage V(IN) Output Current Junction Temperature Storage Temperature Lead Temperature Vapor Phase (60 seconds) Infrared (15 seconds) Power Dissipation (T = 25˚C) A (Note 2) LM3420-4 ...
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LM3420-8.2 Electrical Characteristics Specifications with standard type face are for T ture Range. Unless otherwise specified, V(IN Symbol Parameter V Regulation Voltage I REG OUT Regulation Voltage I OUT Tolerance I Quiescent Current I q OUT 20 µA ...
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LM3420-8.4 Electrical Characteristics Specifications with standard type face are for T ture Range. Unless otherwise specified, V(IN Symbol Parameter 1V ≤ Voltage Gain V ∆V /∆ 470Ω (Note 6) OUT REG L 1V ≤ ...
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LM3420-16.8 Electrical Characteristics Specifications with standard type face are for T ture Range. Unless otherwise specified, V(IN Symbol Parameter V Regulation Voltage I REG OUT Regulation Voltage I OUT Tolerance I Quiescent Current I q OUT 20 µA ...
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Typical Performance Characteristics 4.2V Bode Plot 01235917 8.2V and 8.4V Bode Plot 01235920 12.6V Bode Plot 01235923 16.8V Bode Plot 01235926 Response Time for 4.2V Version 01235918 Response Time for 8.2V, 8.4V Versions 01235921 Response Time for 12.6V Version 01235924 ...
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Typical Performance Characteristics Regulation Voltage vs Output Voltage and Load Resistance 01235929 Regulation Voltage vs Output Voltage and Load Resistance 01235932 Regulation Voltage vs Output Voltage and Load Resistance 01235935 www.national.com (Continued) Circuit Used for Bode Plots 01235930 Quiescent Current ...
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Typical Performance Characteristics Regulation Voltage vs Output Voltage and Load Resistance 01235938 (Continued) 9 www.national.com ...
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... V In some applications, (even under normal operating condi- tions) the voltage on the IN pin can be forced above the V voltage. In these instances, the maximum voltage REG www.national.com Order Package Information Marking LM3420AM5-4.2 D02A LM3420AM5X-4.2 D02A LM3420M5-4.2 D02B LM3420M5X-4.2 D02B LM3420AM5-8.2 D07A LM3420AM5X-8.2 D07A LM3420M5-8 ...
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Compensation (Continued) ≈ 75 kΩ for the 4.2V part, R ≈ 181 kΩ for the 8.4V where ≈ 287 kΩ for the 12.6V part, and R part 16.8V part. The resistor ( the ...
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V External Voltage Trim REG (Continued) Increasing V REG Decreasing V REG FIGURE 4. Changing V Formulas for selecting trim resistor values are shown below, based on the percent of increase (%incr) or percent of decrease (%decr) of the output ...
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Application Circuits (Continued) FIGURE 6. Low Drop-Out Constant Current/Constant Voltage 2-Cell Charger Transistor Q1 provides a disconnect between the battery and the LM3420 when the input voltage is removed. This prevents the 85 µA quiescent current of the LM3420 from ...
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Application Circuits FIGURE 7. High Efficiency Switching Regulator Constant Current/Constant Voltage 2-Cell Charger FIGURE 8. Low Dropout Constant Current/Constant Voltage Li-Ion Battery Charger A switching regulator, constant-current, constant-voltage two-cell Li-Ion battery charging circuit is shown in Figure 7. This circuit ...
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Application Circuits (Continued) FIGURE 10. (Fast) Pulsed Constant Current 2-Cell Charger FIGURE 9. High Efficiency Switching Charger with High Side Current Sensing 15 01235914 01235915 www.national.com ...
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Application Circuits A rapid charge Lithium-Ion battery charging circuit is shown in Figure 10. This configuration uses a switching regulator to deliver the charging current in a series of constant current pulses. At the beginning of the charge cycle (constant- ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...