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EUP9232AHQIR1 Datasheet(PDF) 4 Page - Eutech Microelectronics Inc |
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EUP9232AHQIR1 Datasheet(HTML) 4 Page - Eutech Microelectronics Inc |
4 / 20 page EUP9232 DS9232 Ver1.1 Feb. 2007 4 Application Circuit Figure2. Symbol Parts Purpose Recommend min. max. Remarks FET1 Nch MOSFET Discharge control FET2 Nch MOS FET Charge control R1 Chip resistor ESD protection 1k Ω 300 Ω 1 k Ω C1 Chip capacitor Filter 0.22 µF 0 µF 1 µF R2 Chip resistor ESD protection 1k Ω 300 Ω 1 k Ω C2 Chip capacitor Filter 0.22 µF 0 µF 1 µF R4 Chip resistor ESD protection 1 k Ω = R1 min. = R1 max. Same value as R1 and R2. *1 C3 Chip capacitor Delay time setting 0.22 µF 0 µF 1 µF Attention should be paid to leak current of C3. *2 R3 Chip resistor Protection for charger reverse connection 1 k Ω 300 Ω 5 k Ω Discharge can’t be stopped at less than 300 Ω when a charger is reverse-connected. *3 *1 R4=R1 is required. Overcharge detection voltage increases by R4. For example 10 kΩ (R4) increases overcharge detection voltage by 20 mV. *2 The overcharge detection delay time (tCU), the overdischarge detection delay time (tDD), and the over current detection delay time (tIOV) change with the external capacitor C3. Refer to the “Electrical Characteristics”. *3 When the resistor R3 is set less than 300Ω and a charger is reverse-connected, current which exceeds the power dissipation of the package will flow and the IC may break. Caution 1.The above constants may be changed without notice. 2. It has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. In addition, the example of connection shown above and the constant do not guarantee proper operation. Perform through evaluation using the actual application to set the constant. |
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