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ISL6292DCR4-T Datasheet(PDF) 4 Page - Renesas Technology Corp |
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ISL6292DCR4-T Datasheet(HTML) 4 Page - Renesas Technology Corp |
4 / 13 page ISL6292D FN9166 Rev.0.00 Page 4 of 13 July 2004 Pin Description VIN (Pin 1, 15, 16) VIN is the input power source. Connect to a wall adapter. STAT2 (Pin 2) STAT2 is an open-drain output to indicate the charger status. This pin is pulled to LOW during charging and to HIGH when not charging. When a fault situation occurs, the pin outputs a one-speed blinking indication. STAT1 (Pin 3) STAT1 is an open-drain output to indicate the charger status. The STAT1 pin is pulled LOW when the charger is charging a battery and to HIGH when the charge finishes. This pin outputs two different speeds of blinking signal depending on the type of the fault case. 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) 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) 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) 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. Use a 1 F ceramic capacitor to stabilize the internal linear regulator. IREF (Pin 9) This is the programming input for the constant charging current. IMIN (Pin 10) IMIN is the programmable input for the end-of-charge current. TEMP (Pin 11) TEMP is the input for an external NTC thermistor. The TEMP pin is also used for battery removal detection. VBAT (Pin 12, 13, 14) VBAT is the connection to the battery. Typically a 10 F Tantalum capacitor is needed for stability when there is no battery attached. When a battery is attached, only a 0.1 F ceramic capacitor is required as the minimum decoupling capacitor. Typical Application V2P8 EN GND VBAT IREF STAT2 VIN 5V WALL ADAPTER BATTERY PACK IMIN TEMP STAT1 TIME ISL6292D V2P8 TOEN T C1 10µF 330 R1 C2 1µF RT RU C3 RIREF 80k CTIME 15nF D1 RIMIN 80k 1µF + - |
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