MIC79110 Micrel Semiconductor, MIC79110 Datasheet
MIC79110
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MIC79110 Summary of contents
Page 1
... In the event the input voltage to the charger is discon- nected, the MIC79110 also provides minimal reverse-current and reversed-battery protection. Available in both fixed 4.2V and adjustable outputs, the MIC79110 is offered in the leadless 3mm x 3mm MLF-10 with an operating junction temperature range of –40˚C to +125˚C. Typical Application SHUTDOWN ...
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... MIC79110 Ordering Information Part Number Voltage Marking MIC79110-4.2BML 4.2V L942 MIC79110BML ADJ L9AA Pin Configuration SD 1 RSET 2 SNS 3 BAT 4 VIN 5 3mm x 3mm Fixed Output Pin Description Pin Number Pin Name SET 3 SNS 3 ADJ 4 BAT CHG 8 D EOC ...
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... MIC79110 Absolute Maximum Ratings Input Supply Voltage (V ) .................................. 0V to 18V IN Shutdown Input Voltage (V) ................................ 0V to 18V Output Voltage (ADJ) .................................................... 10V Power Dissipation .................................... Internally Limited Junction Temperature .............................. –40°C to +125°C Electrical Characteristics T = 25°C with 1V OUT LOAD unless otherwise specified. ...
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... CHG Current Limit Sense + V Thermal REF Shutdown End of Charge Detect Current Limit Set A CHG MIC79110 Block Diagram 4 , the D output is low, currents lower EOC EOC BAT SNS D EOC R GND EOC Micrel July 2004 ...
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... MIC79110 PSRR -90 -80 -70 -60 0mA -50 250mA 50mA -40 500mA -30 - +1V OUT IN - 4.2V OUT 0 0 100 1000 FREQUENCY (kHz) Ground Current vs. Temperature 1.2A SET 40 -40 - 100 TEMPERATURE (ºC) Ground Current vs. Supply Voltage 3.5 I =0A BAT 3.0 2.5 2.0 1.5 1.0 0 ...
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... MIC79110 Battery Current vs. Battery Voltage 4 2kΩ SET 4 +1V IN OUT 3 4.2V OUT 3.0 2.5 2.0 1.5 1.0 0 100 200 300 400 500 600 BATTERY CURRENT (mA) Reverse Current vs. Battery Voltage =0V RSET BATTERY VOLTAGE (V) M9999-072004 Battery Current vs ...
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... MIC79110 Line Transient 16V 5V TIME (20µs/div.) Shutdown Transient TIME (100µs/div.) July 2004 =3. Load Transient V = 3.6V 1. =3.6V IN 100µA TIME (100µs/div.) Battery Current Enable Transient TIME (200µs/div.) M9999-072004 Micrel ...
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... The shutdown pin enables low quiescent current when not charging. Current Limit Mode MIC79110 features an internal current limit that is set by the Rset pin with a resistor-to-ground. The maximum current is calculated by the following equation (0.2/R ) × ...
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... MIC79110 capacity. An increase in the charge current during stage 1 does not shorten the total charge time. It will only shorten the time for stage 1 to complete and lengthen the time in stage 2. The lithium-ion loses charge due to aging whether it is used or not. Do not store the batteries at full charge and high heat because it will accelerate the aging process ...
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... MIC79110 Simple Charger - External Trigger to Reset Charge Cycle reset Reset charge cycle. SD GND RSET REOC 200Ω VSENSE DEOC VBAT ACHG VIN VIN The V voltage steps voltage greater than V IN When Vin is below Vbat, the Ibat current is near zero and the reverse shutoff circuit is turning the charge to the battery off ...
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... V MAX ( Bat min ( ) 0.975 - Vbat set (4.2V) The MIC79110 can be connected to a wall wart with a rectified DC voltage and protected from over voltages at the input. Vbat low set by divider. SD Voltage because EOC EOC 11 SD GND RSET REOC 2kΩ VSENSE ...
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... MIC79110 Package Information 3.00 BSC. 0.48 typ 0.20 dia TOP 0.50 BSC. ODD TERMINAL SIDE MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The 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. ...