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参数资料
| 型号： | NCP362BMUTBG |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC OCP TVS USB POS 10-UDFN |
| 标准包装： | 3,000 |
| 应用： | 过压保护控制器 |
| 电源电压： | 1.2 ~ 20 V |
| 电流 - 电源： | 20µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-UFDFN 裸露焊盘 |
| 供应商设备封装： | 10-UDFN（2.5x2） |
| 包装： | 带卷 (TR) |
NCP362
Operation
NCP362 provides overvoltage protection for positive
voltage, up to 20 V. A PMOS FET protects the systems
(i.e.: VBUS) connected on the V out pin, against positive
overvoltage. The Output follows the VBUS level until
OVLO threshold is overtaken.
Undervoltage Lockout (UVLO)
To ensure proper operation under any conditions, the
device has a built ? in undervoltage lock out (UVLO)
circuit. During V in positive going slope, the output remains
disconnected from input until V in voltage is above 3.0 V
nominal. The FLAG output is pulled to low as long as V in
does not reach UVLO threshold. This circuit has a 70 mV
is automatically turned off (5 m s) if the charge current
exceeds I lim . NCP362 goes into turn on and turn off mode
as long as defect is present. The internal ton delay (4 ms
typical) allows limiting thermal dissipation. The Flag pin
goes to low level when an overcurrent fault appears. That
allows the microcontroller to count defect events and turns
off the PMOS with EN pin.
V out
hysteresis to provide noise immunity to transient condition.
V in (V)
I load
Overload
Retrieve
normal
20 V
OVLO
UVLO
0
V out
OVLO
UVLO
0
Figure 24. Output Characteristic vs. V in
Overvoltage Lockout (OVLO)
To protect connected systems on V out pin from
overvoltage, the device has a built ? in overvoltage lock out
(OVLO) circuit. During overvoltage condition, the output
remains disabled until the input voltage exceeds 6.0 V.
FLAG output is tied to low until V in is higher than
OVLO. This circuit has a 100 mV hysteresis to provide
noise immunity to transient conditions .
Overcurrent Protection (OCP)
The NCP362 integrates overcurrent protection to
prevent system/battery overload or defect. The current
limit threshold is internally set at 750 mA. This value can
be changed from 150 mA to 750 mA by a metal tweak,
please contact your ON Semiconductor representative for
availability. During current fault, the internal PMOS FET
operation
I lim
t on
Figure 25. Overcurrent Event Example
FLAG Output
NCP362 provides a FLAG output, which alerts external
systems that a fault has occurred.
This pin is tied to low as soon as: 1.2 V < V in < UVLO,
V in > OVLO, I charge > I limit , T J > 150 ° C. When NCP362
recovers normal condition, FLAG is held high. The pin is
an open drain output, thus a pull up resistor (typically 1 M W
? Minimum 10 k W ) must be provided to V CC . FLAG pin is
an open drain output.
EN Input
To enable normal operation, the EN pin shall be forced
to low or connected to ground. A high level on the pin
disconnects OUT pin from IN pin. EN does not overdrive
an OVLO or UVLO fault.
Internal PMOS FET
The NCP362 includes an internal PMOS FET to protect
the systems, connected on OUT pin, from positive
overvoltage. Regarding electrical characteristics, the
R DS(on) , during normal operation, will create low losses on
V out pin, characterized by V in versus V out dropout.
http://onsemi.com
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| NCP367DPMUEETBG | 功能描述:电池管理 OCP OVP USB AND AC/DC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| NCP367DPMUELTBG | 功能描述:电池管理 OCP OVP USB AND AC/DC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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