参数资料
型号: LTC1998CS6#TR
厂商: Linear Technology
文件页数: 10/12页
文件大小: 0K
描述: IC COMP/PREC ADJ REF TSOT23-6
标准包装: 2,500
功能: 过压/欠压保护
电池化学: 锂离子(Li-Ion)
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 细型,TSOT-23-6
供应商设备封装: TSOT-23-6
包装: 带卷 (TR)
其它名称: LTC1998CS6TR
LTC1998
APPLICATIONS INFORMATION
The calculation of the resistor values R1, R2 and R3 is
quite straightforward and similar to the procedure outlined
in the previous paragraph.
Choose a value for the sum of R1 + R2 + R3 as well as the
values for low battery threshold and hysteresis.
VERSATILE OUTPUT DRIVER
V LOGIC , BATTLO (Pins 5,6)
The LTC1998 uses a CMOS push-pull output stage to drive
the low battery output signal. This output pin ( BATTLO )
R 1 = ( R 1 + R 2 + R 3 ) ?
– 1 ?
Solve for resistor R1:
? 5 V
? V TH 2
?
?
has a separate supply pin, (V LOGIC ) that can be used to
provide an output voltage rail matching the V DD logic of
microprocessors. The V LOGIC pin may be tied to a volt-
age lower than the voltage at the BATT pin. The V LOGIC
pin may also be tied to a voltage higher than V BATT via a
( R 1 + R 2 ) = ( R 1 + R 2 + R 3 ) ?
– 1 ?
Solve for the sum of
then solve for R2 and R3.
? 5 V
? V BATT . Th
?
?
series resistor greater than 10k. The output will then act
as an open-drain device.
In a given application, if it is possible for BATTLO to be
shorted to GND or a supply, a series resistor should be
added to limit the short-circuit current to 5mA.
Example: A system needs to detect a low battery
voltage of 3V (V BATT.Th = 3V) with 250mV hysteresis
(V TH2 = 3.25V). Set the value of the resistor divider
(R1 + R2 + R3) = 1M.
R1 = 539k, R1 + R2 = 667k, R2 = 128k, R3 = 333k.
Choose the closest 1% values, that is 536k, 332k, 127k.
Figure 4 graphically shows the function of the LTC1998 as
described above.
3.25V
PROGRAMMED
HYSTERESIS
THRESHOLD
PROGRAMMED
LOW BATT
THRESHOLD
2.50V
V LOGIC
PROGRAMMABLE
THRESHOLD RANGE
BATTERY
VOLTAGE
HYSTERESIS
BATTERY VOLTAGE
RECOVERS UNDER
REDUCED LOAD
BATTLO
1998 F04
Figure 4. LTC1998 Function Plot
1998fb
10
相关PDF资料
PDF描述
VE-JVN-EZ-F3 CONVERTER MOD DC/DC 18.5V 25W
GEC30DRTS-S93 CONN EDGECARD 60POS DIP .100 SLD
VE-JVN-EZ-F2 CONVERTER MOD DC/DC 18.5V 25W
RP10-4815DE/P CONV DC/DC 10W 36-75VIN +/-15V
M3DYK-3436R IDC CABLE - MKR34K/MC34M/MPD34K
相关代理商/技术参数
参数描述
LTC1998IS6#TR 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 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
LTC1998IS6#TRM 功能描述:IC DET VOLT PROG LOBATT SOT23-6 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
LTC1998IS6#TRMPBF 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 RoHS:是 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
LTC1998IS6#TRPBF 功能描述:IC DETECT VOLT PR LOBATT SOT23-6 RoHS:是 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
LTC20 制造商:3M Electronic Products Division 功能描述:20 way professional IC test clip,0.3in