- 您现在的位置：买卖IC网 > PDF目录16296 > LTM8062EV#PBF (Linear Technology)IC BATTERY CHARGER TRACK 77-LGA PDF资料下载
参数资料
| 型号： | LTM8062EV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/24页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER TRACK 77-LGA |
| 产品培训模块： | LTM806x Step-Down Micro-Module Battery Charger |
| 设计资源： | DC1621A Design Files |
| 特色产品： | μModule Products |
| 标准包装： | 170 |
| 系列： | µModule® |
| 功能： | 充电管理，太阳能 |
| 电池化学： | 铅酸，LiFePO4，锂离子，锂聚合物 |
| 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： | 77-BLGA |
| 供应商设备封装： | 77-LGA（15x9） |
| 包装： | 托盘 |
| 配用： | DC1621A-ND - BOARD DEMO LTM8062 |
LTM8062/LTM8062A
APPLICATIONS INFORMATION
GND
When a bad-battery fault is triggered, the charge cycle
is suspended, and the CHRG status pin becomes high
impedance. The FAULT pin is pulled low to signal that a
fault has been detected.
Cycling the charger’s power or shutdown function initiates
a new charge cycle, but the LTM8062/LTM8062A chargers
do not require a manual reset. Once a bad-battery fault
is detected, a new timer charge cycle initiates if the BAT
pin exceeds the precondition threshold voltage. During
a bad-battery fault, a small current is sourced from the
charger; removing the failed battery allows the charger
output voltage to rise above the preconditioning threshold
voltage and initiate a charge cycle reset. A new charge
cycle is started by connecting another battery to the
charger output.
Battery Temperature Fault: NTC
The LTM8062/LTM8062A can accommodate battery tem-
perature monitoring by using an NTC (negative tempera-
ture coefficient) thermistor close to the battery pack. The
temperature monitoring function is enabled by connecting
a 10kΩ, β ≈ 3380 NTC thermistor from the NTC pin to
ground. If the NTC function is not desired, leave the pin
open. The NTC pin sources 50μA, and monitors the voltage
dropped across the 10kΩ thermistor. When the voltage
on this pin is above 1.36V (0°C) or below 0.29V (40°C),
the battery temperature is out of range, and the LTM8062/
LTM8062A trigger an NTC fault. The NTC fault condition
remains until the voltage on the NTC pin corresponds to
a temperature within the 0°C to 40°C range. Both hot and
cold thresholds incorporate 20% hysteresis, which equates
to about 5°C. If higher operational charging temperatures
are desired, the temperature range can be expanded by
adding series resistance to the 10k NTC resistor. Adding
a 909Ω resistor will increase the effective temperature
threshold to 45°C, for example.
Thermal Foldback
The LTM8062/LTM8062A contains a thermal fold-
back protection feature that reduces charge current
as the IC junction temperature approaches 125°C. In
most cases, on-chip temperatures servo such that
any overtemperature conditions are relieved with
only slight reductions in maximum charge current. In
some cases, the thermal foldback protection feature
can reduce charge currents below the C/10 threshold.
In applications that use C/10 termination (TMR = 0V),
the LTM8062/LTM8062A will suspend charging and en-
ter standby mode until the overtemperature condition is
relieved.
PCB Layout
Most of the headaches associated with PCB layout have
been alleviated or even eliminated by the high level of
LTM8062/LTM8062A integration. The LTM8062/LTM8062A
is nevertheless a switching power supply, and care must be
taken to minimize EMI and ensure proper operation. Even
with the high level of integration, you may fail to achieve
specified operation with a haphazard or poor layout. See
Figure 7 for a suggested layout. Ensure that the grounding
and heat sinking are acceptable.
ADJ
BAT
(OPTIONAL)
RUN V INREG
C BAT
V INA
During an NTC fault, charging is halted and both status
pins are pulled low. If timer termination is enabled, the
timer count is suspended and held until the fault condi-
tion is cleared.
GND C IN
V IN
THERMAL VIAS
Figure 7. Suggested Layout and Via Placement
8062 F07
8062fd
16
For more information www.linear.com/LTM8062
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4110EUHF#PBF | IC BATTERY BACKUP MANAGER 38-QFN |
| 3-6754412-6 | CA,XG,MTRJ-SC |
| ECO-S2DB102EA | CAP ALUM 1000UF 200V 20% SNAP |
| 3-6754411-6 | CA,XG,MTRJ-SC |
| RCM10DRYI-S13 | CONN EDGECARD 20POS .156 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM8062IV#PBF | 功能描述:IC BATTERY CHARGER TRACK 77-LGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:µModule® 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) |
| LTM8062IVPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:32VIN, 2A μModule Power Tracking Battery Charger |
| LTM-820 | 功能描述:LED 安装硬件 LED Mount Self Ret 3 or 5mm Black RoHS:否 制造商:Bivar 产品:LED Mounting Clips LED 大小:5 mm 材料:Nylon 颜色:Black 主体长度:4.4 mm 面板厚度尺寸: 封装:Bulk |
| LTM8328GKR04 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| LTM-8328GKR-04 | 功能描述:LED 显示器和配件 Green RoHS:否 制造商:Avago Technologies 显示器类型:7 Segment 数位数量:2 字符大小:7.8 mm x 14.22 mm 照明颜色:Red 波长:628 nm 共用管脚:Common Anode 工作电压:2.05 V 工作电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 35 C 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。