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| 型号： | ZXCT1010E5TA |
| 厂商： | Diodes Inc |
| 文件页数： | 6/9页 |
| 文件大小： | 184K |
| 描述： | IC CURRENT MONITOR 1% SOT-23-5 |
| 产品培训模块： | Designing with Zetex Current Monitors |
| 标准包装： | 1 |
| 功能： | 电流监控器 |
| 检测方法： | 高端 |
| 精确度： | ±1% |
| 输入电压： | 2.5 V ~ 20 V |
| 电流 - 输出： | 10mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1478 (CN2011-ZH PDF) |
| 其它名称： | ZXCT1010DKR |
ISSUE 10 - JULY 2007
ZXCT1010
6
Li-Ion Charger Circuit
The above figure shows the ZXCT1010 supporting
the Benchmarq bq2954 Charge Management IC.
Most of the support components for the bq2954 are
omitted for clarity. This design also uses the Zetex
FZT789A high current Super- PNP as the switching
transistor in the DC-DC step down converter and the
FMMT451 as the drive NPN for the FZT789A. The
circuit can be configured to charge up to four Li-Ion
cells at a charge current of 1.25A. Charge can be
terminated on maximum voltage, selectable
minimum current, or maximum time out. Switching
frequencyofthePWMloopisapproximately120kHz.
100?/DIV>
0.2?/DIV>
100?/DIV>
FZT789A
BC81725
1k?/DIV>
BAS16
10礖
FMMT451
140礖
ZHCS1000
220?/DIV>
SNS pin
MOD pin
harger Input
To Battery +
bq2954
5V
ZXCT1010
support components omitted for clarity
+
-
V
in
Load
I
out
APPLICATIONS INFORMATION (Continued)
Bi-Directional Current Sensing
The ZXCT1010 can be used to measure current
bi-directionally, if two devices are connected as
shown below.
If the voltage V1 is positive with respect to the
voltageV2thelowerdevicewillbeactive,delivering
a proportional output current to Rout. Due to the
polarity of the voltage across Rsense, the upper
device will be inactive and will not contribute to the
current delivered to Rout. When V2 is more positive
than V1, current will be flowing in the opposite
direction, causing the upper device to be active
instead.
Non-linearity will be apparent at small values of
Vsense due to offset current contribution. Devices
can use separate output resistors if the current
direction is to be monitored independently.
Bi-directional Transfer Function
-400
-200
0
200
400
0
1
2
3
4
5
Sense Voltage (mV)
Output Current v Sense Voltage
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXCT1010E5TA-CUT TAPE | 制造商:DIODES 功能描述:ZXCT1010 Series 300 kHz 3.5 uA 2.5 to 20 V High-Side Current Monitor - SOT-23-5 |
| ZXCT1011 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:High-side low drift current monitor |
| ZXCT1011E5TA | 功能描述:电流和电力监控器、调节器 Low Temp RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| ZXCT1012 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:Reduced height micro-power current monitor |
| ZXCT1012DAATA | 功能描述:IC CURRENT MONITOR 2.5% 5TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
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