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参数资料
| 型号： | MAX16127TC+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/19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
Increasing the Input Voltage Protection
Range
The MAX16126/MAX16127 can tolerate -36V to +90V.
To increase the positive input voltage range protection,
connect two back-to-back zener diodes from IN to sys-
tem ground, and connect a resistor in series with IN and
the power-supply input to limit the current drawn by the
zener diodes (see Figure 3 ).
Zener diode D1 clamps positive voltage excursions and
D2 clamps negative voltage excursions. Set the zener
voltages so the worst-case voltages do not exceed the
ratings of the part. Also ensure that the zener diode
power ratings are not exceeded. The combination of
the series resistor and the zener diodes also help snub
pulses on the supply voltage input and can aid in clamp-
ing the low-energy ISO7637-2 pulses.
It is important to compute the peak power dissipation
in the series resistor. Most standard surface-mount
resistors cannot withstand the peak power dissipation
during certain pulse events. Check the resistor data
sheets for pulse power derating curves. If necessary,
connect multiple resistors in parallel or use automotive-
rated resistors.
The shutdown input needs a series resistor to limit the
current if V IN exceeds the clamped voltage on IN. A good
starting point is 100k I .
Output Reservoir Capacitor
The output capacitor can be used as a reservoir capaci-
tor to allow downstream circuitry to ride out fault transient
conditions. Since the voltage at the output is protected
from input voltage transients, the capacitor voltage rating
can be less than the expected maximum input voltage.
DC-DC
V BATT
IN
CONVERTER
OUT
R S
100 I
10nF
100 I
10μF
*
GND
*
GATE
IN
SRC
OUT
D1
D2
100k I
SHDN
MAX16126
MAX16127
FLAG
*
GND
* SYSTEM GROUND
Figure 3. Circuit to Increase Input Voltage Protection Range
Maxim Integrated
14
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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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