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您好，REGIN 电压2.7V~4.5V
Power supply requirements for the bq34z100-G1 are simplified due to the presence of the internal LDO voltage regulation. The REGIN pin accepts any voltage level between 2.7 V and 4.5 V, which is optimum for a single-cell Li-Ion application. For higher battery voltage applications, a simple pre-regulator can be provided to power the bq34Z100-G1 and any optional LEDs. Decoupling the REGIN pin should be done with a 0.1-µF 10% ceramic X5R capacitor placed close to the device. While the pre-regulator circuit is not critical, special attention should be paid to its quiescent current and power dissipation. The input voltage should handle the maximum battery stack voltage. The output voltage can be centered within the 2.7-V to 4.5-V range as recommended for the REGIN pin. For high stack count applications, a commercially available LDO is often the best quality solution, but comes with a cost tradeoff.
