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ISL6292B Datasheet(PDF) 4 Page - Intersil Corporation |
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ISL6292B Datasheet(HTML) 4 Page - Intersil Corporation |
4 / 12 page 4 FN9139 .1 April 19, 2005 Pin Description VIN VIN is the input power source. Connect to a wall adapter. RED, GRN RED and GRN are two open-drain outputs to drive a red and a green LED in the same package. The RED and the GRN pins are guaranteed to be capable of sinking at least 5mA current. TIME The TIME pin determines the oscillation period by connecting a timing capacitor between this pin and GND. The oscillator provides a time reference for the charger. GND GND is the connection to system ground. V2P9 This is a 2.9V untrimmed voltage output. This pin outputs a 2.9V voltage source when the input voltage is above POR threshold, independent on the EN pin input. The V2P9 pin can be used as an indication for adapter presence. EN EN is the enable logic input. Connect the EN pin to LOW to enable the charger or leave it floating to disable the charger. This pin is pulled up to 2.9V when left floating. IREF This is the programming input for the constant charging current in a linear charger. In the typical application of a dual-mode charger, the IREF pin programs the trickle charge current as well as the protection current level. IMIN IMIN is the programmable input for the end-of-charge current. TEMP TEMP is the input for an external NTC thermistor. DT DT is the input to set the temperature difference before and after the charging starts. This pin can also be used as an indication whether or not the charger is charging. VSEN VSEN is the battery voltage sensing input. This pin allows remote sense of the battery pack voltage. BAT BAT is the charger output. Typical Application VIN V2P9 TEMP GND BAT Input C 1 To Battery C 3 BAT+ BAT- ID R 1 R 2 R T C 2 DT RED GRN D 2 D 1 EN TIME C TIM E IREF R IREF IMIN R IM IN VSEN C 4 R 3 R S R 4 R 5 C1, C3:1µF X5R ceramic capacitor C2, C4:0.1µF X5R ceramic capacitor CTIME : 22nF X5R or better timing capacitor D1, D2: dual-color (red and green) LED in one package R1:41.2kΩ, 1% R2: TBD, value dependent on the ∆T (2.3kΩ for 20°C) RT: ECTH-160808-103-J-3800HT, 10kΩ at 25°C, 5% RS:1.33kΩ, 1% R3:10kΩ, 5% (R3 and C4 are for improving ESD protection) RIREF :80kΩ, 1% RIMIN : 133kΩ, 1% R4, R5:330Ω, 5% ISL6292B |
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