參數(shù)資料
型號： LTC4061
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： 獨立線性鋰離子電池充電器熱敏電阻輸入
文件頁數(shù)： 11/20頁
文件大?。?/td> 665K
代理商： LTC4061
LTC4061
11
4061fa
–
+
–
+
–
+
0.35 V
CC
0.76 V
CC
0.016 V
CC
TOO COLD
TOO HOT
ENABLE
R
NTC
R
NOM
2
LTC4061
V
CC
4061 F01
NTC
OPERATIOU
Programming Charge Termination
The LTC4061 can terminate a charge cycle using one of
several methods, allowing the designer considerable flex-
ibility in choosing an ideal charge termination algorithm.
Table 1 shows a brief description of the different termina-
tion methods and their behaviors.
Figure 1. NTC Circuit Information
Charge Time Termination
Connecting a capacitor (C
TIMER
) to the TIMER pin enables
the timer and selects charge time termination. The total
charge time is set by:
F
C
TIMER
TIME HOURS
(
HOURS
)
.
=
μ
0 1
3
APPLICATIU
W
U
U
Table 1.
METHOD
Charge
Time
Termination
Mode
Charge
Current
Termination
TIMER
0.1μF to
GND
I
DET
R
DET
to
GND
CHARGER DESCRIPTION
Charges for 3 Hours. After 3 Hours, the Charger
Stops Charging and Enters Standby Mode.
Recharge Cycles Last for 1.5 Hours.
Charges for 3 Hours. After 3 Hours, the Charger
Stops Charging and Enters Standby Mode.
Recharge Cycles Last for 1.5 Hours.
Charges Until Charge Current Drops Below
I
DET
, Then Enters Standby Mode.
Pull-Down State When Charging. High Impedance State
When Charging Is Stopped. Pulsing State Available
When NTC Is Used and Is Still Charging.
Pull-Down State When Charging. High Impedance State
When Charging Is Stopped. Pulsing State Available
When NTC Is Used and Is Still Charging.
Pull-Down State When Charging. High Impedance State
When Charging Is Stopped. Pulsing State Available
When NTC Is Used and Is Still Charging.
CHRG OUTPUT DESCRIPTION
Pull-Down State While I
BAT
> I
DET
. High Impedance
State While I
BAT
< I
DETECT
or When Charging Is Stopped.
Pulsing State Available When NTC Is Used and
Is Still Charging.
Pull-Down State While I
BAT
> I
DETECT
. High Impedance
State While I
BAT
< I
DETECT
or When Charging Is Stopped.
Pulsing State Available When NTC Is Used and
Is Still Charging.
Pull-Down State When Charging. High Impedance State
When Charging Is Stopped. Pulsing State Available
When NTC Is Used and Is Still Charging.
0.1μF to
GND
GND
R
DET
to
GND
User
Selectable
Charge
Termination
V
CC
R
DET
to
GND
Charges Indefinitely.
Charges Indefinitely.
SmartStart Is Disabled.
V
CC
NC
Charges Indefinitely.
SmartStart Is Disabled.
GND
NC
NC
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