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参数资料
| 型号： | LTC4007EGN |
| 厂商： | Linear Technology |
| 文件页数： | 7/24页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER CTRLR 4A 24SSOP |
| 标准包装： | 55 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 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（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 管件 |
LTC4007
PIN FUNCTIONS
ITH (Pin 10): Control Signal of the Inner Loop of the
Current Mode PWM. Higher ITH voltage corresponds to
higher charging current in normal operation. A 6k resistor,
in series with a capacitor of at least 0.1μF to GND provides
loop compensation. Typical full-scale output current is
40μA. Nominal voltage range for this pin is 0V to 3V.
PROG (Pin 11): Current Programming/Monitoring Input/
Output. An external resistor to GND programs the peak
charging current in conjunction with the current sensing
resistor. The voltage at this pin provides a linear indication of
charging current. Peak current is equivalent to 1.19V. Zero
current is approximately 0.3V. A capacitor from PROG to
ground is required to ?lter higher frequency components.
The maximum resistance to ground is 100k. Values higher
than 100k can cause the charger to shut down.
NC (Pin 12): No Connect.
I CL (Pin 13): Input Current Limit Indicator. Active low
digital output. Internal 10μA pull-up to 3.5V. Pulled low if
the charger current is being reduced by the input current
limiting function. The pin is capable of sinking at least
100μA. If V LOGIC is greater than 3.3V, add an external
pull-up.
CSP (Pin 14): Current Ampli?er CA1 Input. The CSP and
BAT pins measure the voltage across the sense resistor,
R SENSE , to provide the instantaneous current signals
required for both peak and average current mode
operation.
BAT (Pin 15): Battery Sense Input and the Negative
Reference for the Current Sense Resistor. A precision
internal resistor divider sets the ?nal ?oat potential on
this pin. The resistor divider is disconnected during
shutdown.
CHEM (Pin 16): Select 4.1V or 4.2V cell chemistry by
connecting the pin to GND or open, respectively. Internal
14μA pull-up to 5.3V. Can also be driven with open-
collector/drain logic levels.
FLAG (Pin 17): Active low open-drain output that indicates
when charging current has declined to 10% of maximum
programmed current. A pull-up resistor is required if this
function is used. The pin is capable of sinking at least
100μA.
CLP (Pin 18): Positive input to the supply current limiting
ampli?er, CL1. The threshold is set at 100mV above the
voltage at the CLN pin. When used to limit supply current, a
?lter is needed to ?lter out the switching noise. If no current
limit function is desired, connect this pin to CLN.
CLN (Pin 19): Negative Reference for the Input Current
Limit Ampli?er, CL1. This pin also serves as the power
supply for the IC. A 10μF to 22μF bypass capacitor should
be connected as close as possible to this pin.
TGATE (Pin 20): Drives the top external P-channel MOSFET
of the battery charger buck converter.
PGND (Pin 21): High Current Ground Return for the
BGATE Driver.
BGATE (Pin 22): Drives the bottom external N-channel
MOSFET of the battery charger buck converter.
INFET (Pin 23): Drives the Gate of the External Input PFET.
SHDN (Pin 24):
Charger is shut down and timer is reset when this pin is
HIGH. Internal 10μA pull-up to 3.5V. This pin can also be
used to reset the charger by applying a positive pulse that
is a minimum of 0.1μs long.
4007fc
7
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相关代理商/技术参数 |
参数描述 |
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| LTC4007EGN#PBF | 功能描述:IC BATT CHARGER CTRLR 4A 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 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:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC4007EGN#TR | 功能描述:IC CHARGER BATTERY 4A 24-SSOP RoHS:否 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) |
| LTC4007EGN#TRPBF | 功能描述:IC BATT CHARGER CTRLR 4A 24SSOP 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) |
| LTC4007EUFD-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4A, High Efficiency, Li-Ion Battery Charger |
| LTC4007EUFD-1#PBF | 功能描述:IC CHARGER BATTERY 4A 24-QFN 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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