參數(shù)資料
型號: LTC4057
廠商: Linear Technology Corporation
元件分類: 熱敏電阻
英文描述: Standalone Linear Li-lon Battery Charger with Thermistor Input
中文描述: 獨(dú)立線性鋰離子電池充電器熱敏電阻輸入
文件頁數(shù): 14/20頁
文件大?。?/td> 665K
代理商: LTC4057
LTC4061
14
4061fa
S U
APPLICATIO
W
U
U
Figure 4. State Diagram of a Charge Cycle
Using Charge Current Termination
Figure 5. State Diagram of a Charge Cycle
Using User-Selectable Termination
CHARGE MODE
FULL CURRENT
I
< I
IN VOLTAGE MODE
4061 F04
TRICKLE CHARGE MODE
1/10TH FULL CURRENT
BAT > 2.9V
BAT < 2.9V
2.9V < BAT < 4.1V
BAT > 4.1V
BAT < 4.1V
EN = 5V
OR
UVLO CONDITION
STANDBY MODE
NO CHARGE CURRENT
CHRG STATE: Hi-Z
SHUTDOWN MODE
I
CC
DROPS TO 20μA
CHRG STATE: Hi-Z
CHRG STATE: PULL-DOWN
CHRG STATE: PULL-DOWN
POWER ON
EN = 0V
OR UVLO
CONDITION
STOPS
CHARGE MODE
FULL CURRENT
4061 F05
TRICKLE CHARGE MODE
1/10TH FULL CURRENT
BAT > 2.9V
BAT < 2.9V
2.9V < BAT
EN = 5V
OR
UVLO CONDITION
SHUTDOWN MODE
I
CC
DROPS TO 20μA
CHRG STATE: Hi-Z
CHRG STATE: PULL-DOWN
POWER ON
EN = 0V
OR UVLO
CONDITION
STOPS
CHRG STATE:
PULL-DOWN IF I
BAT
> I
DETECT
Hi-Z IF I
BAT
< I
DETECT
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