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參數(shù)資料
| 型號： | LTM8062AEV#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | BATTERY CHARGE CONTROLLER, 1150 kHz SWITCHING FREQ-MAX, PBGA77 |
| 封裝： | 15 X 9 MM, 4.32 MM HEIGHT, ROHS COMPLIANT, MO-222, LGA-77 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大小： | 580K |
| 代理商： | LTM8062AEV#PBF |
LTM8062/LTM8062A
13
8062fa
APPLICATIONS INFORMATION
efficientimplementationofvarioustemperaturecompensa-
tion schemes for a maximum peak power tracking (MPPT)
application. As the temperature characteristic for a typical
solar panel VMP voltage is highly linear, a simple solution
fortrackingthatcharacteristiccanbeimplementedusinga
Linear Technology LM234 3-terminal temperature sensor.
This creates an easily programmable, linear temperature
dependent characteristic.
In the circuit shown in Figure 4,
RIN =
100VMP 25°C
(
)
VINREG
–100
1–
100 0.0677
VINREG RSET
k
RSET =100
1
TC 4405
+
0.0677
VINREG
–
VMP 25°C
(
)
TC 4405 VINREG
k
where TC = temperature coefficient (in V/°C), and
VMP(25°C) = maximum power voltage at 25°C.
Figure 4. MPPT Temperature Compensation Network
VINREG
8062 F04
LTM8062
LINEAR
TECHNOLOGY
LM234
RIN
VIN
V+
V–
R
RSET
As the temperature coefficient for VMP is similar to that
of VOC, the specified temperature coefficient for VOC
(TC) of –78mV/°C and the specified peak power voltage
(VMP(25°C)) of 17.6V can be inserted into the equations
to calculate the appropriate resistor values for the tem-
perature compensation network in Figure 4. With RSET
equal to 1k, then:
RSET =100
1
–78mV/
°C4405
+
0.0677
2.7
–
17.6
–78mV /
°C44052.7
k
RIN =
100 17.6V
2.7
–100
1–
100 0.0677
2.7 4.1
1400k
Battery Voltage Temperature Compensation
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
outlinedpreviously,implementationoflinearbatterycharge
voltagetemperaturecompensationcanbeaccomplishedby
incorporating a Linear Technology 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 tem-
perature coefficient, or –19.8mV/°C. Using the feedback
For example, given a common 36-cell solar panel that has
the following specified characteristics:
Open Circuit Voltage (VOC) = 21.7V
Maximum Power Voltage (VMP) = 17.6V
Open-Circuit Voltage Temperature Coefficient (VOC)
= –78mV/°C
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|---|---|
| LTM8062AIV#PBF | 功能描述:IC BATTERY CHARGER TRACK 77LGA RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:µModule® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| LTM8062EV#PBF | 功能描述:IC BATTERY CHARGER TRACK 77-LGA RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:µModule® 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測計/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTM8062EVPBF | 制造商:Linear Technology 功能描述:Battery Charger 2A 32Vin Tracking LGA77 |
| LTM8062IV#PBF | 功能描述:IC BATTERY CHARGER TRACK 77-LGA RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:µModule® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| LTM8062IVPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:32VIN, 2A μModule Power Tracking Battery Charger |
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