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参数资料
| 型号： | MAX16127TC+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/19页 |
| 文件大小： | 0K |
| 描述： | IC LOAD DUMP REV V PROT 12TQFN |
| 产品培训模块： | Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 应用： | 负载突降，电压保护 |
| 电流 - 电源： | 224µA |
| 电源电压： | 3 V ~ 30 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFQFN 裸露焊盘 |
| 供应商设备封装： | 12-TQFN 裸露焊盘（3x3） |
| 包装： | 管件 |
MAX16126/MAX16127
Load-Dump/Reverse-Voltage Protection Circuits
DC-DC
V IN
10nF
100 I
10μF
IN
CONVERTER
OUT
GND
100k I
IN
GATE
SRC
OUT
SHDN
0.1μF
R1
TERM
UVSET
MAX16127
FLAG
OVSET
R3
R2
GND
R4
Figure 2. Overvoltage and Undervoltage Limiter Protection Configuration (MAX16127)
MOSFET Power Dissipation
The R DS(ON) must be low enough to limit the MOSFET
power dissipation during normal operation. Power dis-
sipation (per MOSFET) during normal operation can be
calculated using this formula:
P = I LOAD 2 x R DS(ON)
where P is the power dissipated in each MOSFET and
I LOAD is the average load current.
During a fault condition in switch mode, the MOSFETs
turn off and do not dissipate power. Limiter mode impos-
es the worst-case power dissipation. The average power
can be computed using the following formula:
P = I LOAD x (V IN - V OUT )
where P is the average power dissipated in both
MOSFETs, I LOAD is the average load current, V IN is the
input voltage, and V OUT is the average limited voltage
Maxim Integrated
on the output. In limiter mode, the output voltage is a
sawtooth wave with characteristics determined by the
R DS(ON) of the MOSFETs, the output load current, the
output capacitance, the gate charge of the MOSFETs,
and the GATE charge-pump current.
Since limiter mode can involve high switching currents
when the GATE is turning on at the start of a limiting cycle
(especially when the output capacitance is high), it is
important to ensure the circuit does not violate the peak
power rating of the MOSFETs. Check the pulse power
ratings in the MOSFET data sheet.
MOSFET Gate Protection
To protect the gate of the MOSFETs, connect a zener
clamp diode from the gate to the source. The cathode
connects to the gate, and the anode connects to the
source. Choose the zener clamp voltage to be above 10V
and below the MOSFET V GS maximum rating.
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16127TC+ | 功能描述:监控电路 Load-Dump/Reverse-V Protection Circuits RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16127TC+T | 功能描述:监控电路 Load-Dump/Reverse-V Protection Circuits RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16127TCA+ | 制造商:Maxim Integrated Products 功能描述:LOAD-DUMP/REVERSE-VOLTAGE PROTECTION CIRCUITS - Rail/Tube |
| MAX16127TCB+ | 制造商:Maxim Integrated Products 功能描述:LOAD-DUMP/REVERSE-VOLTAGE PROTECTION CIRCUITS - Rail/Tube |
| MAX16127TCC+ | 制造商:Maxim Integrated Products 功能描述:LOAD-DUMP/REVERSE-VOLTAGE PROTECTION CIRCUITS - Rail/Tube |
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