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LTC4015充电电流设置问题

LTC4015在配置成4.2V锂电池充电情况下,ICHARGRE_TARGET寄存器是只读状态,没有办法写入,且数据手册也明确指出不可编辑,如何才能降低充电电流以减轻MOSFET的发热?

手册如下:

CHARGER SETTING REGISTER DESCRIPTIONS (Sub-Addresses 0x1A through Ox2E)
Registers which control the primary charging parameters, such as charge voltage and charge current are only writable when the CHEMn pins are configured for a programmable chemistry algorithm (Li-lon-Prog, LiFePO4-Prog, oiLead-Acid-Prog). lf the CHElMn pins are configured for a fixed chemistry algorithm (Li-lon-Fixed-4.2, Li-lon-Fixed-4.1Li-lon-fixed-4.0, LiFeP0 -fixed-3.6, LiFeP0 -fixed-3.8/3.6, or Lead-Acid-Fixed) the LTC4015 ignores writes to theseregisters. See the section Chemistry Selection for more information about configuring the CHEMn pins.

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