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参数资料
| 型号： | NCP380HMU21AATBG |
| 厂商： | ON Semiconductor |
| 文件页数： | 18/23页 |
| 文件大小： | 622K |
| 描述： | IC CURRENT LIMIT SWITCH 6-UDFN |
| 标准包装： | 3,000 |
| 功能： | 限流 |
| 检测方法： | 高端 |
| 输入电压： | 2.5 V ~ 5.5 V |
| 电流 - 输出： | 2.1A |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-UDFN 裸露焊盘 |
| 供应商设备封装： | 6-uDFN（2x2） |
| 包装： | 带卷 (TR) |
NCP380, NCV380
http://onsemi.com
18
When the resistor is choosing to fit with the Customer
application, the limits of the over current threshold can be
calculated with the following formula:
)0.0000009 (Rlim * 22.375)
4
IOCP min + 1.6915129 * 0.0330328 Rlim ) 0.0011207(Rlim * 22.375)
2
* 0.0000451 (Rlim * 22.375)
3
)
(eq. 6)
IOCP max + 2.2885175 * 0.0446914 Rlim ) 0.0015163(Rlim * 22.375)
2
* 0.000061 (Rlim * 22.375)
3
)
) 0.0000012 (Rlim * 22.375)
4
(eq. 7)
IOCPtyp + 1.9900152 * 0.0388621 Rlim ) 0.0013185(Rlim * 22.375)
2
* 0.0000531 (Rlim * 22.375)
3
)
) 0.0000011 (Rlim * 22.375)
4
(eq. 8)
The minimum, typical and maximum current curves are
described in the following graph:
Figure 26. Current Threshold vs. Rlim Resistor
5
0
IOCP min vs. R
LIM
R
LIM
(kW)
IOCP vs. R
LIM
IOCP max vs. R
LIM
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
That is recommended to respect 6 kW47 kW resistor
range for two reasons.
For the low resistor values, the current limit is pushed up
to high current level. Due to internal power dissipation
capability, a maximum of 2.4 A typical can be set for the
mDFN package if thermal consideration are respected. For
the TSOP6 version 1.2 A is the maximum recommended
value because the part could enter in thermal shutdown
mode before constant current regulation mode.
In the other side, if we want to keep 15% of accuracy, high
resistor values can be used up to 50 kW. With higher value,
the current threshold is lower than 500 mA, so in this case
degraded accuracy can be observed.
PCB Recommendations
The NCP380 integrates a PMOS FET rated up to 2 A, and
the PCB design rules must be respected to properly evacuate
the heat out of the silicon. The UDFN6 PAD1 must be
connected to ground plane to increase the heat transfer if
necessary. This pad must be connected to ground plane. By
increasing PCB area, the R
q
JA
of the package can be
decreased, allowing higher power dissipation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP380HMUAJAATBG | 功能描述:电源开关 IC - 配电 OVER CURRENT PROTECTION RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| NCP380HMUAJAGEVB | 功能描述:电源管理IC开发工具 NCP380 EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP380HSN05AAT1G | 功能描述:电源开关 IC - 配电 OVER CURRENT PROTECTION RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| NCP380HSN05AAT2G | 制造商:ON Semiconductor 功能描述:REEL / NCP380 0.5A TSOP5 T2 T&R |
| NCP380HSN05AGEVB | 功能描述:电源管理IC开发工具 NCP380 EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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