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参数资料
| 型号： | LTC4068XEDD-4.2#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER BATT LI-ON 8-DFN |
| 标准包装： | 121 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4.25 V ~ 6.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
LTC4068-4.2/LTC4068X-4.2
PI FU CTIO S
PROG (Pin 5): Charge Current Program and Charge Cur-
rent Monitor. Charge current is programmed by connect-
ing a 1% resistor, R PROG , to ground. When charging in
constant-current mode, this pin servos to 1V. In all modes,
the voltage on this pin can be used to measure the charge
current using the following formula:
I BAT = (V PROG /R PROG ) ? 1000
This pin is clamped to approximately 2.4V. Driving this pin
to voltages beyond the clamp voltage can draw large
currents and should be avoided.
V CC (Pin 6): Positive Input Supply Voltage. Provides
power to the charger. V CC can range from 4.25V to 6.5V.
This pin should be bypassed with at least a 1 μ F capacitor.
When V CC is within 100mV of the BAT pin voltage, the
LTC4068 enters shutdown mode dropping the battery
drain current to less than 2 μ A.
ACPR (Pin 7): Power Supply Status Open-Drain Output.
When V CC is greater than the undervoltage lockout thresh-
old and at least 100mV above V BAT , the ACPR pin is pulled
to ground; otherwise, the pin is high impedance.
EN (Pin 8): Enable Input . A logic high on the EN pin will put
the LTC4068 into shutdown mode where the battery drain
current is reduced to less than 2 μ A and the supply current
is reduced to less than 50 μ A. A logic low or floating the EN
pin (allowing an internal 2M ? pull-down resistor to pull
this pin low) enables charging.
BLOCK DIAGRA
6
V CC
120 ° C
T A
T DIE
1 ×
1 ×
1000 ×
MA
5 μ A
BAT
2
R1
7
3
ACPR
CHRG
CA
VA
+
–
R2
–
*
+
R3
1V
REF
1.211V
CHARGE ACPR
R4
8
EN
LOGIC
TERM
EN
SHDN
C2*
C1
+
–
*TRICKLE
CHARGE
DISABLED
0.1V
R5
–
+
ON THE
LTC4068X
2.9V
TO BAT
1
ITERM
5
PROG
GND
4, 9
R TERM
R PROG
406842 BD
406842fa
6
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相关代理商/技术参数 |
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|---|---|
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| LTC4069EDC#TRMPBF | 功能描述:IC CHARGER LI-ION 6-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4069EDC#TRPBF | 功能描述:IC CHARGER LI-ION 6-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
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