mm1446 Mitsumi Electronics, Corp., mm1446 Datasheet
mm1446
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mm1446 Summary of contents
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... Protection of Lithium Ion Battery (one cell) Monolithic IC MM1446 Outline This lithium ion battery protection IC that adds control using a fuse to the method of overcurrent detection control used in the familiar MM1301 series. An OSI pin (charge control pin) also has been provided. 1-Cell Protection ICs ...
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Block Diagram 1: Over-discharge detection voltage * 2: Over-charge detection voltage * Pin Assignment SOP - 8B 8 GND CS1 GD CS2 OC2 TD OC1 ...
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Pin Description PIN No. PIN Name Negative power supply for this IC. Also act as detection voltage pin for the battery GND 1 connected between Vcc-GND. Detection pin for voltage between CS1-GND. When CS1 is connected with the Source of ...
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... Overcurrent Protection Release (Ta=25°C) Symbol T STG T OPR V max max. OC1 V max. CS1 V max. OC2 V max. CS2 P D Symbol T OPR V OP (Unless otherwise specified Ta=25°C, model name MM1446E) Symbol Measurement Conditions I V =4.5V R CC1 =3.5V CC2 =1.9V CC3 =1.9V (Ta=70°C) CC4 CC V =4.5V CC5 R =∞ ...
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Item Overdischarge Detection Delay Time Overcurrent Detection Delay Time 1 Overcurrent Detection Delay Time 2 Overcharge Detection Delay Time 1 Overcharge Detection Delay Time 2 Operating Limit Voltage ( Terminal Output Voltage H GD Terminal Output Voltage ...
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Measuring Circuit Measuring Circuit 1 Measuring Circuit 2 Note : 0.2V V CS1 1V/100µ 1V/100µ ALM 4. ...
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Timing Chart Charge Normal mode Over discharging mode V ALM V ALML DDF OC1 OV OC2 OV Undecided CS1 Undecided (V ) CS2 CS2 ...
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Example using discharge FET on resistance to detect overcurrent. Note: Applicable circuits shown are typical examples provided for reference purposes. Mitsumi cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement ...