- 您现在的位置：买卖IC网 > PDF目录1863 > NCP367OPMUEOTBG (ON Semiconductor)IC VOLT PROTECTION OCP OVP 8DFN PDF资料下载
参数资料
| 型号： | NCP367OPMUEOTBG |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/13页 |
| 文件大小： | 0K |
| 描述： | IC VOLT PROTECTION OCP OVP 8DFN |
| 标准包装： | 3,000 |
| 应用： | 手持/移动设备 |
| 输入电压： | 1.2 V ~ 28 V |
| 电源电压： | 1.2 V ~ 28 V |
| 电流 - 电源： | 42µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（2x2.2） |
| 包装： | 带卷 (TR) |
NCP367
APPLICATION INFORMATION
Operation
The NCP367 is an integrated IC which offers a complete
protection of the portable devices during the Li ion battery
charge.
First, the input pin is protected up to +30 V, protecting
the down stream system (charger, transceiver, system...)
against the power supply transients such as inrush current
or defective functionality. Additional protection level is
offered with the overcurrent block which eliminates
current peak or opens the charge path if an overcurrent
default appears.
More of that, the battery voltage is monitored all along
the input power supply is connected, allowing to open
charge path if Li ion battery voltage exceeds 4.3 V, caused
by CCCV charger or battery pack fault.
The integrated pass element (PMOS FET) is sized to
support very high charge DC current up to 2.3 A. The
overcurrent threshold can be externally adjusted with a
pull ? down resistor and gain select pin is available to divide
current limit threshold with internal fixed gain. Allowing
to adjust with logic pin the overcurrent threshold if
USB/500 mA or WA/1.5 A is detected, without changing
R ILIM resistor, in example.
Undervoltage, Overvoltage, Overcurrent and thermal
faults are signalized thanks to the open drain FLAG pin, by
pulling its down.
Undervoltage Lockout (UVLO)
To ensure proper operation under any conditions, the
device has a built ? in undervoltage lock out (UVLO)
circuit. During Vin positive going slope, the output remains
disconnected from input until Vin voltage is above 1.85 V
plus hysteresis nominal. This circuit has a 80 mV
hysteresis to provide noise immunity to transient condition.
Overvoltage Lockout (OVLO)
To protect connected systems on Vout pin from
overvoltage, the device has a built ? in overvoltage lock out
(OVLO) circuit. During overvoltage condition, the output
remains disabled as long as the input voltage exceeds this
FLAG output is tied to low as long as Vin is higher than
OVLO. This circuit has a 100 mV hysteresis to provide
noise immunity to transient conditions .
FLAG Output
NCP367 provides a FLAG output, which alerts external
systems that a fault has occurred.
This pin is tied to low as soon as the OVLO, OV BAT , I OCP
or internal temperature thresholds are exceeded and
remains low until between minimum driving voltage and
UVLO threshold. When Vin level 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, which is able to support 1 mA maximum.
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
a UVLO or OVLO fault.
Overcurrent Protection (OCP)
This device integrates the overcurrent protection
function, from wall adapter to battery. That means the
current across the internal PMOS is regulated and cut when
the value, set by external RSEL resistor, exceeds I LIM
longer than t REG .
An internal resistor is placed in series with the pin
allowing to have a maximum OCP value when I LIM pin is
directly connected to GND.
By adding external resistors in series with I LIM and GND,
the OCP value is decreased.
An additional logic pin, GS (gain select), is very useful
in case of different charge rate is necessary (Wall adapter
and USB, for example).
By setting GS to 0.4 V, overcurrent thresholds are
depending on R select resistor, which is connect between
pin 4 and GND. When the GS pin is tied to 1.2 V (high logic
level) the preselected current limit is divided by 2.75. Due
threshold.
http://onsemi.com
9
相关PDF资料 |
PDF描述 |
|---|---|
| NCP372MUAITXG | IC CTLR OVP POS & NEG 12-LLGA |
| NCP373MU04TXG | IC CTLR OVP POS & NEG 12-LLGA |
| NCP3985SN28T1G | IC REG LDO 2.8V .15A 5TSOP |
| NCP400FCT2G | IC REG LDO 1.8V .15A 6FLPCHP |
| NCP4200MNR2G | IC CONV SYNC BUCK PMBUS 40QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP370GEVB | 功能描述:电源管理IC开发工具 EVALUATION BRD 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 |
| NCP370MUAITXG | 功能描述:电压模式 PWM 控制器 POS-NEG OVP W/OCP RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| NCP3712ASNT1 | 功能描述:电源开关 IC - 配电 200mA High Side Sw 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 |
| NCP3712ASNT1G | 功能描述:电源开关 IC - 配电 200mA High Side Sw With Flexible OVP 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 |
| NCP3712ASNT3 | 功能描述:电源开关 IC - 配电 200mA High Side Sw 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 |
发布紧急采购，3分钟左右您将得到回复。