参数资料
| 型号： | LTC4000IGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 20/40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页当前第20页第21页第22页第23页第24页第25页第26页第27页第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
V FLOAT =
R BFB1 + R BFB2
R + R OFB2
SimilartotheinputexternalPMOS,thechargingexternal
PMOS must be able to withstand a gate to source voltage
greater than V BGATE(ON) (15V maximum) or the maximum
regulated voltage at the CSP pin, whichever is less. Consider
the expected maximum current, power dissipation and
instant-on voltage drop when selecting this PMOS. The
PMOS suggestions in Table 1 are an appropriate starting
point depending on the application.
Float Voltage, Output Voltage and Instant-On Voltage
Dependencies
The formulas for setting the float voltage, output voltage
and instant-on voltage are repeated here:
? 1.136V
R BFB2
V OUT = OFB1 ? 1.193V
R OFB2
In the typical application, V OUT is set higher than V FLOAT
to ensure that the battery is charged fully to its intended
float voltage. On the other hand, V OUT should not be
programmed too high since V OUT(INST_ON) , the minimum
voltage on CSP, depends on the same resistors R OFB1 and
R OFB2 that set V OUT . As noted before, this means that the
output voltage regulation level is always 122.5% of the
instant-on voltage. The higher the programmed value of
V OUT(INST_ON) , the larger the operating region when the
charger PMOS is driven in the linear region where it is
less efficient.
If R OFB1 and R OFB2 are set to be equal to R BFB1 and R BFB2
respectively, then the output voltage is set at 105% of
the float voltage and the instant-on voltage is set at 86%
of the float voltage. Figure 8 shows the range of possible
output voltages that can be set for V OUT(INST_ON) and V OUT
with respect to V FLOAT to ensure the battery can be fully
charged in an ideal scenario.
V OUT(INST _ ON) =
R OFB1 + R OFB2
R OFB2
? 0.974V
Taking into account possible mismatches between the
resistor dividers as well as mismatches in the various
regulation loops, V OUT should not be programmed to
be less than 105% of V FLOAT to ensure that the battery
can be fully charged. This automatically means that the
instant-on voltage level should not be programmed to be
less than 86% of V FLOAT .
POSSIBLE
POSSIBLE
OUTPUT
INSTANT-ON
VOLTAGE RANGE
VOLTAGE RANGE
NOMINAL OUTPUT VOLTAGE
NOMINAL FLOAT VOLTAGE
NOMINAL INSTANT-ON VOLTAGE
100%
105%
100%
86%
100%
MINIMUM PRACTICAL
OUTPUT VOLTAGE
MINIMUM PRACTICAL
INSTANT-ON VOLTAGE
75%
81.6%
4000 F08
Figure 8. Possible Voltage Ranges for V OUT and
V OUT(INST_ON) in Ideal Scenario
4000fb
20
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。