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参数资料
| 型号： | LTC4001EUF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION BUCK 16-QFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 带卷 (TR) |
LTC4001
PI FU CTIO S
FAULT (Pin 10): Battery Fault. This pin is a logic high if a
shorted battery is detected or if a temperature fault is
detected. A temperature fault occurs with the temperature
monitor circuit enabled and the thermistor temperature is
either below 0 ° C or above 50 ° C (typical).
NTC (Pin 11): Input to the NTC (Negative Temperature
Coefficient) Thermistor Temperature Monitoring Circuit.
Under normal operation, tie a thermistor from the NTC pin
to the GNDSENS pin and a resistor of equal value from NTC
to V IN . When the voltage on this pin is above 0.74V IN (Cold,
0 ° C) or below 0.29V IN (Hot, 50 ° C), charging is disabled
and the CHRG pin blinks. When the voltage on NTC comes
back between 0.74V IN and 0.29V IN , the timer continues
where it left off and charging resumes. There is approxi-
mately 3 ° C of temperature hysteresis associated with
each of the input comparators. If the NTC function is not
used connect the NTC pin to GNDSENS. This will disable
all of the NTC functions. NTC should never be pulled above
V IN .
PROG (Pin 12): Charge Current Program. The R PROG
resistor connects from this pin to GNDSENS, setting the
current:
IDET (Pin 13): Charge Rate Detection Threshold. Connect-
ing a resistor, R IDET to GNDSENS programs the charge
rate detection threshold. If R IDET = R PROG , CHRG provides
an I BAT /10 indication. For other thresholds see the Appli-
cations Information section.
SS (Pin 14): Soft-Start/Compensation. Provides soft-start
function and compensation for the float voltage control
loop and compensation for the charge current control
loop. Tie a soft-start/compensation capacitor between this
pin and GNDSENS.
TIMER (Pin 15): Timer Capacitor. The timer period is set
by placing a capacitor, C TIMER , to GNDSENS. Set C TIMER
to:
C TIMER = Time (Hrs) ? 0.0733 ( μ F)
where time is the desired charging time.
Connect this pin to IDET to disable the timer. Connect this
pin to GNDSENS to end battery charging when I BAT drops
below the IDET charge rate threshold.
BATSENS (Pin 16): Battery Sense Input. An internal resis-
tor divider sets the final float voltage at this pin. The
resistor divider is disconnected in sleep mode or when
R PROG =
1 . 110 k
I BAT ( AMPS )
EN = H to reduce the battery drain current. Connect this pin
to the positive battery terminal.
where I BAT is the high rate battery charging current.
Exposed Pad (Pin 17): Ground. This pin must be soldered
to the PCB ground (PGND) for electrical contact and rated
thermal performance.
4001f
6
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| LTC4002EDD-4.2 | 功能描述:IC CHARGER BATTERY LI-ION 10-DFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4002EDD-4.2#PBF | 功能描述:IC CHARGER BATTERY LI-ION 10-DFN 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 |
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