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參數資料
| 型號： | ZXCT1010E5TA |
| 廠商： | Diodes Inc |
| 文件頁數： | 6/9頁 |
| 文件大小： | 184K |
| 描述： | IC CURRENT MONITOR 1% SOT-23-5 |
| 產品培訓模塊： | Designing with Zetex Current Monitors |
| 標準包裝： | 1 |
| 功能： | 電流監控器 |
| 檢測方法： | 高端 |
| 精確度： | ±1% |
| 輸入電壓： | 2.5 V ~ 20 V |
| 電流 - 輸出： | 10mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應商設備封裝： | SOT-23-5 |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1478 (CN2011-ZH PDF) |
| 其它名稱： | 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>
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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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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 制造商全稱:ZETEX 功能描述:High-side low drift current monitor |
| ZXCT1011E5TA | 功能描述:電流和電力監控器、調節器 Low Temp RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| ZXCT1012 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:Reduced height micro-power current monitor |
| ZXCT1012DAATA | 功能描述:IC CURRENT MONITOR 2.5% 5TDFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩流/電流管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 功能:電流開關 檢測方法:- 精確度:±10% 輸入電壓:1.7 V ~ 5.5 V 電流 - 輸出:600mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
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