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ISL6292 Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL6292 Datasheet(HTML) 8 Page - Intersil Corporation |
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8 / 20 page  8 FN9105.8 November 14, 2006 Pin Description VIN (Pin 1, 15, 16 for 4x4, 5x5; Pin 1 for 3x3) VIN is the input power source. Connect to a wall adapter. Fault (Pin 2) FAULT is an open-drain output indicating fault status. This pin is pulled to LOW under any fault conditions. Status (Pin 3) STATUS is an open-drain output indicating charging and inhibit states. The STATUS pin is pulled LOW when the charger is charging a battery. Time (Pin 4) The TIME pin determines the oscillation period by connecting a timing capacitor between this pin and GND. The oscillator also provides a time reference for the charger. GND (Pin 5) GND is the connection to system ground. TOEN (Pin 6 for 4x4, 5x5; N/A for 3x3) TOEN is the TIMEOUT enable input pin. Pulling this pin to LOW disables the TIMEOUT charge-time limit for the fast charge modes. Leaving this pin HIGH or floating enables the TIMEOUT limit. EN (Pin 7 for 4x4, 5x5; Pin 6 for 3x3) EN is the enable logic input. Connect the EN pin to LOW to disable the charger or leave it floating to enable the charger. V2P8 (Pin 8 for 4x4, 5x5; Pin 7 for 3x3) This is a 2.8V reference voltage output. This pin outputs a 2.8V voltage source when the input voltage is above POR threshold and outputs zero otherwise. The V2P8 pin can be used as an indication for adapter presence. IREF (Pin 9 for 4x4, 5x5; Pin 8 for 3x3) This is the programming input for the constant charging current. IMIN (Pin 10 for 4x4, 5x5; N/A for 3x3) IMIN is the programmable input for the end-of-charge current. TEMP (Pin 11 for 4x4, 5x5; Pin 9 for 3x3) TEMP is the input for an external NTC thermistor. The TEMP pin is also used for battery removal detection. VBAT (Pin 12, 13, 14 for 4x4, 5x5; Pin 10 for 3x3) VBAT is the connection to the battery. Typically a 10 μF Tantalum capacitor is needed for stability when there is no battery attached. When a battery is attached, only a 0.1 μF ceramic capacitor is required. Typical Applications V2P8 EN GND VBAT IREF FAULT VIN 5V Wall Adapter Battery Pack IMIN TEMP STATUS TIME ISL6292 V2P8 TOEN T C 1 F μ 1 1k Ω R 1 1k Ω R 2 C 2 1 F μ R T R U F μ 1 C 3 R IREF Ω k 80 C TIME nF 15 D 1 D 2 R IMIN Ω k 80 Typical Application Circuit For 4x4 or 5x5 QFN Package Options ISL6292 |
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