isl9212 Intersil Corporation, isl9212 Datasheet
isl9212
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isl9212 Summary of contents
Page 1
... Data Sheet Charging System Safety Circuit The ISL9212 is an integrated circuit (IC) optimized to provide a Li-ion battery redundant safety protection from failures of a charging system. The IC monitors the input voltage, the battery voltage, and the charge current. When any of the three parameters exceeds its limit, the IC turns off an internal P-channel MOSFET to remove the power from the charging system ...
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... EN Internal Pull Down Resistor WRN Output Logic Low WRN Output Logic High Leakage Current POWER MOSFET On Resistance 2 ISL9212 Thermal Information Thermal Resistance (Notes 2, 3) 4x3 DFN Package . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150°C Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C Maximum Lead Temperature (Soldering 10s 300° ...
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... WRN 3 ISL9212 VB (Pin 8) Battery voltage monitoring input. This pin is connected to the battery pack positive terminal via an isolation resistor. ILIM (Pin 9) Overcurrent protection threshold setting pin. Connect a resistor between this pin and GND to set the OCP threshold. OUT (Pins 10, 11) Output pin ...
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... GRADUALLY RISES TO THE INPUT OVERVOLTAGE THRESHOLD VIN (2V/div) ILIM (1V/div) WRN (5V/div) FIGURE 6. TRANSIENT WAVEFORMS WHEN INPUT STEPS FROM ZERO ISL9212 The test conditions for the Typical Operating Performance are 25.5kΩ 200kΩ, Unless Otherwise Noted. ILIM VB Time: 5ms/div FIGURE 3 ...
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... FALLING THRESHOLD 2.48 2.46 -50 - TEMPERATURE (°C) FIGURE 12 TEMPERATURE POR 5 ISL9212 The test conditions for the Typical Operating Performance are 25.5kΩ 200kΩ, Unless Otherwise Noted. (Continued) ILIM VB VIN (1V/div) OUT (1V/div) Load Current (500mA/div) WRN (5V/div) FIGURE 9. ZOOMED-IN VIEW OF FIGURE 8 (BLUE: LOAD ...
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... TEMPERATURE (°C) FIGURE 18. BATTERY OVP BLANKING TIME 6 ISL9212 The test conditions for the Typical Operating Performance are 25.5kΩ 200kΩ, Unless Otherwise Noted. (Continued) ILIM VB 6.5V 70 100 130 FIGURE 15. OVERCURRENT PROTECTION BLANKING TIME ...
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... FIGURE 20. EN INPUT THRESHOLD vs TEMPERATURE FIGURE 22. ON RESISTANCE vs TEMPERATURE AT DIFFERENT INPUT VOLTAGES AND LOAD CURRENTS Theory of Operation The ISL9212 is an integrated circuit (IC) optimized to provide a redundant safety protection to a Li-ion battery from charging system failures. The IC monitors the input voltage, the battery voltage, and the charge current. When any of the ...
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... MOSFET. The IC does not resume operation until the internal temperature drops below 90°C. External Enable Control The ISL9212 offers an enable (EN) input. When the EN pin is pulled to logic HIGH, the protection IC is shut down. The internal control circuit as well as the power PFET are turned off ...
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... ISL9212 pins under a failure mode. The recommended resistance ranges from 10kΩ to 100kΩ. The selection of the R is dependent on the IO voltage (VIO) of the MCU should be selected so that the ISL9212 EN pin voltage is above the disable threshold when the GPIO output of the MCU is high. 9 ISL9212 ...
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... In practice, the input decoupling capacitor is recommended to use a 16V X5R dielectric ceramic capacitor with a value between 0.1µF to 1µF. The output of the ISL9212 and the input of the charging circuit typically share one decoupling capacitor. The selection of that capacitor is mainly determined by the requirement of the charging circuit. When using the ISL6292 family chargers, a 1µ ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 11 ISL9212 L12.4x3A 2X 12 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE ...