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ICS1700AS Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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2 / 24 page 2 ICS1700A Pin Configuration Pin Definitions ICS1700A CHG DCHG PFN OTN CMN AVSS RC THERM VREF VIN VDD SEL0 VSS MRN SEL1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 unused 16-Pin DIP 20-Pin SOIC Pin Number DIP SOIC Pin Name Type Definition 1 1 CHG OUT Active high TTL compatible signal used to turn on an external current source to provide current to charge the battery. 2 2 DCHG OUT Active high TTL compatible signal available to turn on a discharge circuit. 3 3 PFN OUT Polling fault indicator. An active low turns on an external indicator to show the controller is either polling for the presence of the battery or has determined the battery has been removed. 4 5 CMN OUT Charge mode indicator. A continuous low shows the controller is in a soft start or fast charge. The indicator flashes during the topping and maintenance charges. 5 7 OTN OUT Out-of-temperature range indicator. An active low turns on an external indicator showing the battery is out of the normal fast charge temperature range. 6 8 SEL0 IN Input used with the SEL1 pin to program the device for the desired charge rate. 7 9 VSS Ground. 8 10 AVSS Ground. 9 11 SEL1 IN Input used with the SEL0 pin to program the device for the desired charge rate. 10 12 MRN IN Master reset signal. A logic low pulse greater than 700 ms initiates a device reset. 11 13 RC IN An external resistor and capacitor sets the frequency of the internal clock. 12 14 THERM IN Thermistor or thermal switch input for temperature sensing. 13 16 VREF 1.26V voltage reference. 14 18 VIN IN Battery voltage normalized to one cell with an external resistor divider. 15 19 unused Ground. 16 20 VDD Device supply =+5.0 VDC Note: (DIP/SOIC) Pin 6/8 has an internal pull-up. Pin 9/11 has an internal pull-up. Pin 10/12 has an internal pull-up. Pin 12/14 has an internal pull-up. Pins 4, 6, 15, and 17 are unconnected in the SOIC package. |
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