手动停机  / Manual Shutdown

在充电循环中的任何时刻都能通过去掉RPROG（从而使RPROG引脚浮置）来把HM4054H置于

停机模式。这使得电池漏电流降至2μA以下，且电源电流降至50μA以下。重新连接设定电阻器可启动

一个新的充电循环。

At any point in the charge cycle, the

HM4054H can be put into shutdown mode by removing

RPROG thus floating the PROG pin. This reduces the battery drain current to less than 2

μA and the

supply current to less than 50

μA. A new charge cycle can be initiated by reconnecting the program

resistor.

In manual shutdown, the CHRG

————————

exceed the UVLO conditions. The CHRG

————————

pin is in a high impedance state if the

HM4054H is in

自动再启动  / Automatic Recharge

一旦充电循环被终止，HM4054H立即采用一个具有2.0ms滤波时间（

BAT引脚上的电压进行连续监控。当电池电压降至4.05V（大致对应于电池容量的80％至90％）以下时，

充电循环重新开始。这确保了电池被维持在（或接近）一个满充电状态，并免除了进行周期性充电循环

启动的需要。在再充电循环过程中，CHRG引脚输出进入一个强下拉状态。

Once the charge cycle is terminated, the

HM4054H continuously monitors the voltage on the

battery voltage falls below 4.05V (which corresponds to approximately 80% to 90% battery capacity).

This ensures that the battery is kept at or near a fully charged condition and eliminates the need for

periodic charge cycle initiations. CHRG

____________

output enters a strong pull-down state during recharge

cycles.

Figure 1. State Diagram of a Typical Charge Cycle