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| 型号： | LT3652IDD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/26页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER 2A 12DFN |
| 产品培训模块： | LT3652 Multi-Chemistry Battery Charger for Solar Power |
| 标准包装： | 121 |
| 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-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN-EP（3x3） |
| 包装： | 管件 |
| 配用： | DC1568A-ND - BOARD BATTERY CHARGER SOLAR PWR |
LT3652
APPLICATIONS INFORMATION
16
14
12
10
8
6
4
forward voltage yields the lowest power loss and highest
efficiency. The rectifier diode must be rated to withstand
reverse voltages greater than the maximum V IN voltage.
The minimum average diode current rating (I DIODE(MAX) )
is calculated with maximum output current (I CHG(MAX) ),
maximum operational V IN , and output at the precondition
threshold (V BAT(PRE) , or 0.7 ? V BAT(FLT) ):
I DIODE(MAX) > I CHG(MAX) ? (V IN(MAX) – V BAT(PRE) ) / V IN(MAX) ) (A)
12
16
20 24
28
32
MAXIMUM OPERATIONAL V IN VOLTAGE (V)
3652 F03
Figure 3. 7.2V at 1.5A Switched Inductor Values
Magnetics vendors typically specify inductors with
maximum RMS and saturation current ratings. Select an
inductor that has a saturation current rating at or above (1+
? I MAX /2) ? I CHG(MAX) , and an RMS rating above I CHG(MAX) .
Inductors must also meet a maximum volt-second product
requirement. If this specification is not in the data sheet of
an inductor, consult the vendor to make sure the maximum
For example, a rectifier diode for a 7.2V, 2A charger with
a 25V maximum input voltage would require:
I DIODE(MAX) > 2 ? (25 – 0.7[7.2]) / 25), or
I DIODE(MAX) > 1.6A
Battery Float Voltage Programming
The output battery float voltage (V BAT(FLT) ) is programmed
by connecting a resistor divider from the BAT pin to V FB .
V BAT(FLT) can be programmed up to 14.4V.
volt-second product is not being exceeded by your design.
The minimum required volt-second product is:
LT3652
BAT
R FB1
+
V BAT(FLT) ? (1 – V BAT(FLT) /V IN(MAX) ) (V ? μS)
V FB
Rectifier Selection
3652 F04
R FB2
The rectifier diode from SW to GND, in a LT3652 battery
charger provides a current path for the inductor current
Figure 4. Feedback Resistors from BAT to V FB
Program Float Voltage
when the main power switch is disabled. The rectifier is
selected based upon forward voltage, reverse voltage, and
maximum current. A Schottky diode is required, as low
3652fd
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3652IDDTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Tracking 2A Battery Charger for Solar Power |
| LT3652IMSE | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Tracking 2A Battery Charger for Solar Power |
| LT3652IMSE#PBF | 功能描述:IC BATT CHARGER SOLAR 2A 12MSOP 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) |
| LT3652IMSE#TRPBF | 功能描述:IC BATT CHARGER SOLAR 2A 12MSOP 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) |
| LT3652IMSEPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Tracking 2A Battery Charger for Solar Power |
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