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参数资料
| 型号： | LTC4071IMS8E#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/18页 |
| 文件大小： | 0K |
| 描述： | IC LI-ION/POLY BATT CHRGR 8-MSOP |
| 标准包装： | 50 |
| 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-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 8-MSOP-EP |
| 包装： | 管件 |
LTC4071
BLOCK DIAGRAM
V IN
LTC4071
V CC
R IN
PULSED
DUTY CYCLE = 0.003%
ADJ
3-STATE
DETECT
SYSTEM
LOAD
30μs – 200μs
0.9sec – 7sec
NTCBIAS
CLK
OSC
MP1
BODY
DIODE
BAT
R NOM
10k
NTC
ADC
T 10k
LBSEL
LBSEL MUST BE TIED TO V CC OR GND
+
Li-Ion
BATTERY
HBO
+
–
1.2V
1.2V
EA
MP2
GND
4071 BD
OPERATION
( V IN ? V BAT )
I CHG =
The LTC4071 provides a simple, reliable, and high per-
formance battery protection and charging solution by
preventing the battery voltage from exceeding a pro-
grammed level. Its shunt architecture requires just one
resistor from the input supply to charge and protect the
battery in a wide range of battery applications. When the
input supply is removed and the battery voltage is below
the high battery output threshold, the LTC4071 consumes
just 550nA from the battery. If the battery voltage falls
below the programmable low battery disconnect level,
the battery disconnects from V CC , protecting the battery
from over-discharge either by the load connected to V CC
or from the LTC4071 quiescent current.
When an input supply is present the battery charges
through the body diode of the internal disconnect PFET,
MP1, until the battery voltage rises above the low-
battery connect threshold. Select an input voltage large
enough for V CC to reach V LBC_VCC to ensure that MP1 turns
on. The user may detect the connected state by observing
periodic pulses at the NTCBIAS pin that only occur once
V CC has risen above V LBC_VCC , and cease once V CC falls
below V LBD . Depending on the capacity of the battery and
the input decoupling capacitor, the V CC voltage generally
falls to V BAT when MP1 turns on; rather than V BAT rising
to V CC . The internal PFET then reconnects the battery to
V CC and the charge rate is determined by the input voltage,
the battery voltage, and the input resistor:
R IN
As the battery voltage approaches the float voltage, the
LTC4071 shunts current away from the battery thereby
reducing the charge current. The LTC4071 can shunt up to
50mA. The shunt current limits the maximum charge current.
4071fc
7
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| LTC4075 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input USB/AC Adapter Standalone Li-Ion Battery Chargers |
| LTC4075EDD | 功能描述:IC CHARG BATT LI-ON USB 10DFN RoHS:否 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 |
| LTC4075EDD#PBF | 功能描述:IC CHARG BATT LI-ON USB 10DFN 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 |
| LTC4075EDD#TR | 功能描述:IC CHARG BATT LI-ON USB 10DFN RoHS:否 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 |
| LTC4075EDD#TRPBF | 功能描述:IC CHARG BATT LI-ON USB 10DFN 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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