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| 型号： | LTM8061EV-8.4#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 17/22页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER 8.4V 77-LGA |
| 产品培训模块： | LTM806x Step-Down Micro-Module Battery Charger |
| 设计资源： | DC1645A Design Files |
| 特色产品： | μModule Products |
| 标准包装： | 170 |
| 系列： | µModule® |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.95 V ~ 32 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 77-BLGA |
| 供应商设备封装： | 77-LGA（15x9） |
| 包装： | 托盘 |
| 配用： | DC1645A-D-ND - BOARD EVAL LTM8061-8.4 |
LTM8061
APPLICATIONS INFORMATION
input voltage, possibly exceeding the LTM8061’s rating
and damaging the part. If the input supply is poorly con-
trolled or the user will be plugging the LTM8061 into an
energized supply, the input network should be designed
to prevent this overshoot. This can be accomplished by
installing a small resistor in series to V IN , but the most
popular method of controlling input voltage overshoot is
to add an electrolytic bulk capacitor to the V IN net. This
capacitor’s relatively high equivalent series resistance
damps the circuit and eliminates the voltage overshoot.
The extra capacitor improves low frequency ripple filter-
ing and can slightly improve the efficiency of the circuit,
though it is physically large.
Thermal Considerations
The temperature rise curves given in the Typical Perfor-
mance Characteristics section gives the thermal perfor-
mance of the LTM8061. These curves were generated by
the LTM8061 mounted to a 58cm 2 4-layer FR4 printed
circuit board. Boards of other sizes and layer count can
exhibit different thermal behavior, so it is incumbent upon
the user to verify proper operation over the intended sys-
tem’s line, load and environmental operating conditions.
The junction to air and junction to board thermal resistances
given in the Pin Configuration diagram may also be used to
estimate the LTM8061 internal temperature. These thermal
coefficients are determined for maximum output power per
JESD 51-9, “JEDEC Standard, Test Boards for Area Array
Surface Mount Package Thermal Measurements” through
analysis and physical correlation. Bear in mind that the
actual thermal resistance of the LTM8061 to the printed
circuit board depends upon the design of the circuit board.
The internal temperature of the LTM8061 must be lower
than the maximum rating of 125°C, so care should be
taken in the layout of the circuit to ensure good heat
sinking of the LTM8061. The bulk of the heat flow out of
the LTM8061 is through the bottom of the module and
the LGA pads into the printed circuit board. Consequently
a poor printed circuit board design can cause excessive
heating, resulting in impaired performance or reliability.
Please refer to the PCB Layout section for printed circuit
board design suggestions.
The LTM8061 is equipped with a thermal foldback that
reduces the charge current as the internal temperature
approaches 125°C. This does not mean that it is impos-
sible to exceed the 125°C maximum internal temperature
rating. The ambient operating condition and other factors
may result in high internal temperatures.
Finally, be aware that at high ambient temperatures the
internal Schottky diode will have significant leakage current
increasing the quiescent current of the LTM8061.
8061fa
For more information www.linear.com/LTM8601
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM8061IV-4.1#PBF | 功能描述:IC BATTERY CHARGER 4.1V 77-LGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:µModule® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTM8061IV-4.1PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:32V, 2A μModule Li-Ion/ Polymer Battery Charger |
| LTM8061IV-4.2#PBF | 功能描述:IC BATTERY CHARGER 4.2V 77-LGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:µModule® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTM8061IV-4.2PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:32V, 2A μModule Li-Ion/ Polymer Battery Charger |
| LTM8061IV-8.2#PBF | 功能描述:IC BATTERY CHARGER 8.2V 77-LGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:µModule® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
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