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| 型号： | LT3652EMSE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 17/26页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER SOLAR 12MSOP |
| 特色产品： | Energy Harvesting Power Products |
| 标准包装： | 37 |
| 功能： | 充电管理，太阳能 |
| 电池化学： | 铅酸，LiFePO4，锂离子，锂聚合物，镍镉，镍氢 |
| 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： | 12-TSSOP （0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 12-MSOP，裸露焊盘 |
| 包装： | 管件 |
| 产品目录页面： | 1340 (CN2011-ZH PDF) |
| 配用： | DC1568A-ND - BOARD BATTERY CHARGER SOLAR PWR |
LT3652
APPLICATIONS INFORMATION
simple solution for tracking that characteristic can be
implemented using an LM234 3-terminal temperature
sensor. This creates an easily programmable, linear
temperature dependent characteristic.
In the circuit shown in figure 8,
As the temperature coefficient for V MP is similar to that
of V OC , the specified temperature coefficient for V OC
(TC) of –78mV/°C and the specified peak power voltage
(V MP(25°C) ) of 17.6V can be inserted into the equations to
calculate the appropriate resistor values for the tempera-
ture compensation network in Figure 8. With R SET equal
to 1000Ω, then:
V IN
R IN1
V +
V –
LM234
R
R SET
V IN
V IN_REG
R SET = 1k
R IN1 = –1k ? (–0.078 ? 4405 ) = 344k
R IN2 = 344k/({[17.6 + 344k ? (0.0674/1k)]/2.7} – 1)
= 24.4k
R IN2
LT3652
Battery Voltage Temperature Compensation
3658 F08
Figure 8. MPPT Temperature Compensation Network
R IN1 = –R SET ? (TC ? 4405), and
R IN2 = R IN1 /({[V MP(25°C) + R IN1 ? (0.0674/R SET )]/V IN_REG } – 1)
Where: TC = temperature coefficient (in V/°C), and
V MP(25°C) = maximum power voltage at 25°C
For example, given a common 36-cell solar panel that has
the following specified characteristics:
Open Circuit Voltage (V OC ) = 21.7V
Maximum Power Voltage (V MP ) = 17.6V
Open-Circuit Voltage Temperature Coefficient (V OC ) =
Some battery chemistries have charge voltage require-
ments that vary with temperature. Lead-acid batteries in
particular experience a significant change in charge volt-
age requirements as temperature changes. For example,
manufacturers of large lead-acid batteries recommend
a float charge of 2.25V/cell at 25°C. This battery float
voltage, however, has a temperature coefficient which is
typically specified at –3.3mV/°C per cell.
In a manner similar to the MPPT temperature correction
outlined previously, implementation of linear battery
charge voltage temperature compensation can be ac-
complished by incorporating an LM234 into the output
feedback network.
For example, a 6-cell lead acid battery has a float charge
voltage that is commonly specified at 2.25V/cell at 25°C,
or 13.5V, and a –3.3mV/°C per cell temperature coefficient,
–78mV/°C
3652fd
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3652EMSETRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Tracking 2A Battery Charger for Solar Power |
| LT3652HV | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage High Current Controller for Battery Charging and Power Management |
| LT3652HVEDD#PBF | 功能描述:IC BATTERY CHARGER 2A 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 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) |
| LT3652HVEDD#TRPBF | 功能描述:IC BATTERY CHARGER 2A 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 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) |
| LT3652HVEDD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Tracking 2A Battery Charger |
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