参数资料
| 型号： | LTC4000IGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 29/40页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER BATTERY 28-SSOP |
| 产品培训模块： | LTC4000 60V Battery Charging Controller and Power Management |
| 标准包装： | 2,500 |
| 系列： | PowerPath™ |
| 功能： | 充电管理，电源管理 |
| 电池化学： | 多化学 |
| 电源电压： | 3 V ~ 60 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
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LTC4000
APPLICATIONS INFORMATION
This same procedure is then repeated for the other four
loops: the input current regulation, the output voltage
regulation, the battery float voltage regulation and finally
the charge current regulation when V OFB > V OUT(INST_ON) .
Note that the resulting optimum values for each of the loops
may differ slightly. The final values of C C and R C are then
selected by combining the results and ensuring the most
conservative response for all the loops. This usually entails
picking the largest value of C C and the smallest value of
R C based on the results obtained for all the loops. In this
particular example, the value of C C is finally set to 47nF
and R C = 14.7kΩ.
BOARD LAYOUT CONSIDERATIONS
In the majority of applications, the most important param-
eter of the system is the battery float voltage. Therefore,
the user needs to be extra careful when placing and routing
the feedback resistor R BFB1 and R BFB2 . In particular, the
battery sense line connected to R BFB1 and the ground return
line for the LTC4000 must be Kelvined back to where the
battery output and the battery ground are located respec-
tively. Figure 19 shows this Kelvin sense configuration.
SWITCHING
CONVERTER
For accurate current sensing, the sense lines from R IS
and R CS (Figure 19) must be Kelvined back all the way
to the sense resistors terminals. The two sense lines of
each resistor must also be routed close together and away
from noise sources to minimize error. Furthermore, cur-
rent filtering capacitors should be placed strategically to
ensure that very little AC current is flowing through these
sense resistors as mentioned in the applications section.
The decoupling capacitors C IN and C BIAS must be placed
as close to the LTC4000 as possible. This allows as short
a route as possible from C IN to the IN and GND pins, as
well as from C BIAS to the BIAS and GND pins.
In a typical application, the LTC4000 is paired with an
external DC/DC converter. The operation of this converter
often involves high dV/dt switching voltage as well as high
currents. Isolate these switching voltages and currents
from the LTC4000 section of the board as much as pos-
sible by using good board layout practices. These include
separating noisy power and signal grounds, having a good
low impedance ground plane, shielding whenever neces-
sary, and routing sensitive signals as short as possible
and away from noisy sections of the board.
SYSTEM LOAD
GND
ITH
R C
C C
ITH
CC
IID IGATE
R IS
CLN
IN
LTC4000
CSP
CSN
R CS
BGATE
BAT
R BFB1
V IN
GND
BFB
FBG
R BFB2
4000 F19
Figure 19. Kelvin Sense Lines Configuration for LTC4000
4000fb
For more information www.linear.com/LTC4000
29
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相关代理商/技术参数 |
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| LTC4000IUFD#PBF | 功能描述:IC CHARGER BATTERY 28-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 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) |
| LTC4000IUFD#TRPBF | 功能描述:IC CHARGER BATTERY 28-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 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) |
| LTC4000IUFD-1#PBF | 功能描述:IC BATT CHRGR MULTI-CHEM 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 标准包装:2,000 系列:Impedance Track™ 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.4 V ~ 2.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:带卷 (TR) 产品目录页面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名称:296-21665-2 |
| LTC4000IUFD-1#TRPBF | 功能描述:IC CHARGE MGMT MULTI CHEM 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 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) |
| LTC4001 | 制造商:LINER 制造商全称:Linear Technology 功能描述:2A Synchronous Buck Li-Ion Charger |
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