ISL9212B Intersil Corporation, ISL9212B Datasheet
ISL9212B
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ISL9212B Summary of contents
Page 1
... PFET quickly when input overvoltage is detected in order to remove the power before any damage occurs. The ISL9212B has a logic warning output to indicate the fault and an enable input to allow the system to remove the input power. ...
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... EN Internal Pull Down Resistor WRN Output Logic Low WRN Output Logic High Leakage Current POWER MOSFET ON-Resistance 2 ISL9212B Thermal Information Thermal Resistance (Notes 2, 3) 4x3 TDFN 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 ISL9212B 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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... IN ILIM (1V/div) I (2V/DIV) LIM WRN (5V/div) WRN (5V/DIV) FIGURE 6. TRANSIENT WAVEFORMS WHEN INPUT STEPS FROM ISL9212B The test conditions for the Typical Operating Performance are 25.5kΩ 200kΩ, Unless Otherwise Noted. ILIM VB 200mA/DIV Time: 5ms/div TIME: 5ms/DIV FIGURE 3. CAPTURED WAVEFORMS WHEN THE INPUT ...
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... FALLING THRESHOLD 2.48 2.46 -50 - TEMPERATURE (°C) FIGURE 12 TEMPERATURE POR 5 ISL9212B The test conditions for the Typical Operating Performance are 25.5kΩ 200kΩ, Unless Otherwise Noted. (Continued) ILIM (1V/DIV) (1V/DIV) VIN (1V/div) VIN (1V/div OUT (1V/div) OUT (1V/div) ...
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... TEMPERATURE (°C) FIGURE 18. BATTERY OVP BLANKING TIME 6 ISL9212B 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 ISL9212B 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 ISL9212B 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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... BATTERY VOLTAGE (V) FIGURE 23. LITHIUM-SAFE OPERATING REGIONS Interfacing to MCU The ISL9212B has the enable (EN) and the warning (WRN) digital signals that can be interfaced to a microcontroller unit (MCU). Both signals can be left floating if not used. When interfacing to an MCU highly recommended to insert a resistor between the ISL9212B signal pin and the MCU GPIO pin, as shown in Figure 24 ...
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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 ISL9212B 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 ISL9212B L12.4x3A 2X 12 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE ...