参数资料
| 型号： | LTC4000IGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 28/40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) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页当前第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页
LTC4000
APPLICATIONS INFORMATION
With C C = 1μF, R C = 10k at V IN = 20V, V BAT = 7V, V CSP
regulated at 9.8V and a 0.2A output load condition at
CSP, the transient response for a 100mA charge current
step observed at IBMON is shown in Figure 16.
15
10
5
0
–5
–10
The transient response now indicates an overall under
damped system. As noted in the empirical loop compensa-
tion section, the value of R C is now increased iteratively
until R C = 20k. The transient response of the same loop
with C C = 22nF and R C = 20k is shown in Figure 18.
15
10
5
0
–5
–15
–20 –15 –10
–5
0
5
10
15
20
25
–10
5ms/DIV
4000 F16
–15
–20 –15 –10
–5
0
5
10
15
20
25
Figure 16. Transient Response of Charge Current Regulation Loop
Observed at IBMON When V OFB is Regulated to V OUT(INST_ON) with
C C = 1μF, R C = 10k for a 100mA Charge Current Step
The transient response shows a small overshoot with slow
settling indicating a fast minor loop within a well damped
overall loop. Therefore, the value of C C is reduced iteratively
until C C ?=?22nF. The transient response of the same loop
with C C = 22nF and R C = 10k is shown in Figure 17.
15
10
5
0
–5
–10
–15
–20 –15 –10 –5 0 5 10 15 20 25
5ms/DIV
4000 F17
Figure 17. Transient Response of Charge Current Regulation Loop
Observed at IBMON When V OFB is Regulated to V OUT(INST_ON) with
C C = 22nF, R C = 10k for a 100mA Charge Current Step
5ms/DIV
4000 F18
Figure 18. Transient Response of Charge Current Regulation Loop
Observed at IBMON When V OFB is Regulated to V OUT(INST_ON) with
C C = 22nF, R C = 20k for a 100mA Charge Current Step
Note that the transient response is close to optimum
with some overshoot and fast settling. If after iteratively
increasing the value of R C , the transient response again
indicates an over damped system, the step of reducing
C C can be repeated. These steps of reducing C C followed
by increasing R C can be repeated continuously until one
arrives at a stable loop with the smallest value of C C and
the largest value of R C . In this particular example, these
values are found to be C C = 22nF and R C = 20kΩ.
After arriving at these final values of R C and C C , the stability
margin is checked by varying the values of both R C and
C C by 2:1 in all four possible combinations. After which
the setup condition is varied, including varying the input
voltage level and the output load level and the transient
response is checked at these different setup conditions.
Once the desired responses on all different conditions are
obtained, the values of R C and C C are noted.
4000fb
28
For more information www.linear.com/LTC4000
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4001EUF#TRPBF | IC CHARGER LI-ION BUCK 16-QFN |
| LTC4002EDD-8.4#TRPBF | IC CHARGER BATTERY LI-ION 10-DFN |
| LTC4006EGN-6#TRPBF | IC CHARGER BATTERY 4A 16-SSOP |
| LTC4007EGN#TRPBF | IC BATT CHARGER CTRLR 4A 24SSOP |
| LTC4008EGN#TRPBF | IC BATT CHARGER CTRLR 4A 20SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
发布紧急采购，3分钟左右您将得到回复。