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参数资料
| 型号： | LTC4100EG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/30页 |
| 文件大小： | 0K |
| 描述： | IC SMART BATTERY CHARGER 24-SSOP |
| 标准包装： | 59 |
| 功能： | 充电管理 |
| 电池化学： | 智能电池 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
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LTC4100
OPERATION
? Change of BATTERY_PRESENT in the ChargerStatus()
function.
? Setting ALARM_INHIBITED in the ChargerStatus()
function.
? Internal power-on reset condition.
SMBus Accelerator Pull-Ups
Both SCL and SDA have SMBus accelerator circuits
which reduce the rise time on systems with significant
capacitance on the two SMBus signals. The dynamic pull-up
circuitry detects a rising edge on SDA or SCL and applies
1mA to 10mA pull-up to V DD when V IN > 0.8V until V IN
< V DD – 0.8V (external pull-up resistors are still required
to supply DC current). This action allows the bus to meet
SMBus rise time requirements with as much as 250pF on
each SMBus signal. The improved rise time will benefit
all of the devices which use the SMBus, especially those
devices that use the I 2 C logic levels. Note that the dynamic
pull-up circuits only pull to V DD , so some SMBus devices
that are not compliant to the SMBus specifications may still
have rise time compliance problems if the SMBus pull-up
resistors are terminated with voltages higher than V DD .
ChargingVoltage() request functions and broadcast-
ing the charging commands to the LTC4100 over the
SMBus.
4. The LTC4100 will still respond to Smart Battery critical
warning messages without host intervention.
Wake-Up Charging Mode
The following conditions must be met in order to allow
wake-up charging of the battery:
1. The SafetySignal must be RES_COLD, RES_IDEAL, or
RES_UR.
2. AC must be present. This is qualified by DCDIV > V ACP .
Wake-up charging initiates when a newly inserted battery
does not send ChargingCurrent() and ChargingVoltage()
functions to the LTC4100.
The following conditions will terminate the wake-up
charging mode.
1. A T TIMEOUT period is reached when the SafetySignal is
RES_COLD or RES_UR.
2. The SafetySignal is registering RES_OR.
The LTC4100 charger operations are handled by the con-
trol block. This block is capable of charging the selected
battery autonomously or under SMBus Host control.
5. The AC power is no longer present. (DCDIV < V ACP )
The control block receives SMBus slave commands from
The control block allows the LTC4100 to meet the following
1. Implements the Smart Battery’s critical warning mes-
sages over the SMBus.
CHGEN pin will not reset the T TIMEOUT timer.
ChargingVoltage() and ChargingCurrent() commands
and adjusts the charger output parameters accordingly.
condition will not reset the T TIMEOUT timer.
16
The Control Block 3. The successful writing of the ChargingCurrent() AND
ChargingVoltage() function. The LTC4100 will proceed
to the controlled charging mode after these two func-
tions are written.
The control block can request communications with the 4. The SafetySignal is registering RES_HOT.
system management host (SMBus Host) by asserting
SMBALERT = 0; this will cause the SMBus Host, if present,
to poll the LTC4100. 6. The ALARM_INHIBITED becomes set in the Charger-
Status() function.
the SMBus interface block. 7. The INHIBIT_CHARGE is set in the ChargerMode()
function.
Smart Battery-controlled (Level 2) charger requirements: 8. The CHGEN pin is pulled low by an external device. The
LTC4100 will resume wake-up charging, if the CHGEN
pin is released by the external device. Toggling the
2. Operates as an SMBus slave device that responds to
9. There is insufficient DCIN voltage to charge the battery.
The LTC4100 will resume wake-up charging when there
is sufficient DCIN voltage to charge the battery. This
3. The host may control charging by disabling the Smart
Battery’s ability to transmit ChargingCurrent() and
4100fc
For more information www.linear.com/LTC4100
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4100EGTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Smart Battery Charger Controller |
| LTC4101 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Smart Battery Charger Controller |
| LTC4101EG | 制造商:LINER 制造商全称:Linear Technology 功能描述:Smart Battery Charger Controller |
| LTC4101EG#PBF | 功能描述:IC CNTRLR BATT CHRG 24-SSOP 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) |
| LTC4101EG#TRPBF | 功能描述:IC CNTRLR BATT CHRG 24-SSOP 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) |
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