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参数资料
| 型号： | LTC4070IDDB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR LIION/POLY 8DFN |
| 产品培训模块： | LTC4070 - Li-Ion/Polymer Shunt Battery Charger System |
| 标准包装： | 500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 工作温度： | -40°C ~ 125°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（3x2） |
| 包装： | 带卷 (TR) |
LTC4070
PIN FUNCTIONS
HBO (Pin 4): High Battery Monitor Output (Active High).
HBO is a CMOS output that indicates that the battery is
almost fully charged and current is being shunted away
from BAT. This pin is driven high when V CC rises to within
V HBTH of the effective float voltage. The absolute value of
this threshold depends on ADJ and NTC, both of which
affect the float voltage. HBO is driven low when V CC falls
by more than (V HBTH + V HBHY ) below the float voltage.
Refer to Table 1 for the effective float voltage.
GND (Pin 5, Exposed Pad Pin 9): Ground. The exposed
package pad must be connected to PCB ground for rated
thermal performance.
LBO (Pin 6): Low Battery Monitor Output (Active High).
LBO is a CMOS output that indicates when the battery
is discharged below 3.2V or rises above 3.5V. This pin
is driven high if V CC < V LBTH , and is driven low if V CC >
(V LBTH + V LBHY ).
BLOCK DIAGRAM
LTC4070
DRV (Pin 7): External Drive Output. Connect to the gate of
an external PFET to increase shunt current for applications
which require more than 50mA charge current. Minimize
capacitance and leakage current on this pin. When not in
use, float DRV.
V CC (Pin 8): Input Supply Pin. The input supply voltage is
regulated to 4.0V, 4.1V, or 4.2V depending on the ADJ pin
state (see the ADJ pin description for more detail). This pin
can sink up to 50mA in order to keep the voltage regulation
within accuracy limits. When no battery is present, decouple
to GND with a capacitor, C IN , of at least 0.1μF.
V CC
PULSED
DUTY CYCLE < 0.002%
ADJ
3-STATE
DETECT
–
LBO
30μs
+
1.5s
NTCBIAS
R NOM
10k
CLK
OSC
+
–
HBO
NTC
ADC
T
REF
+
DRV
EA
–
GND
4070 BD
4070fc
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4070IDDBTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
| LTC4070IMS8E | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
| LTC4070IMS8E#PBF | 功能描述:IC BATT CHRGR LIION/POLY 8MSOP 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 |
| LTC4070IMS8E#TRPBF | 功能描述:IC BATT CHRGR LIION/POLY 8MSOP 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 |
| LTC4070IMS8EPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
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