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参数资料
| 型号： | MAX16008TP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC VOLT-DET QUAD WINDOW 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小 <1 ms |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
Low-Voltage, High-Accuracy, Quad Window
Voltage Detectors in Thin QFN
Use the following formulas to calculate the error:
The MAX16008/MAX16009 are powered directly from
the system voltage supply. Select R1 and R2 to set the
I IB ? R 1 +
E UV (%) =
? R 1 R 3 ?
?
? R 2 + R 3 ?
V TRIPLOW
x 100
trip voltage. When the supply voltage remains below the
selected threshold, a low logic level on UVOUT_ turns
on the p-channel MOSFET. In the case of an overvolt-
age event, UVOUT_ goes high turning off the MOSFET,
E OV (%) = IB
I ( R 2 + ( 2 x R 1 ))
V TRIPHIGH
x 100
and shuts down the power to the load.
Figure 4 shows a similar application using a fuse and a
silicon-controlled rectifier (SCR). An overvoltage event
turns on the SCR and shorts the supply to ground. The
where E UV and E OV are the undervoltage and over-
voltage error (in %), respectively.
2) Calculate R3 based on R TOTAL and the desired
upper trip point:
surge of current through the short circuit blows the fuse
and terminates the current to the load. Select R3 so that
the gate of the SCR is properly biased when UVOUT_
goes high.
Unused Inputs
R 3 =
V TH xR TOTAL
V TRIPHIGH
Any unused UVIN_ inputs must be connected to V CC , and
any unused OVIN_ inputs must be connected to GND.
UVOUT_ / OVOUT_ Outputs
3) Calculate R2 based on R TOTAL , R3, and the
desired lower trip point:
UVOUT_ and OVOUT_ outputs assert low when UVIN_
and OVIN_, respectively, drop below or exceed their
specified thresholds. The undervoltage/overvoltage out-
R 2 =
V TH xR TOTAL
V TRIPLOW
? R 3
puts are open-drain with a (30μA) internal pullup to V CC .
For many applications, no external pullup resistor is
required to interface with other logic devices. An external
pullup resistor to any voltage up to 5.5V overdrives the
4) Calculate R1 based on R TOTAL , R3, and R2:
R 1 = R TOTAL ? R 2 ? R 3
Overvoltage Shutdown
The MAX16008/MAX16009 are ideal for overvoltage-
shutdown applications. Figure 3 shows a typical circuit
for this application using a pass p-channel MOSFET.
internal pullup if interfacing to different logic supply volt-
ages. Internal circuitry prevents reverse current flow from
the external pullup voltage to V CC (Figure 5). When
choosing the external pullup resistor, the resistance
value should be large enough to ensure that the output
can sink the necessary current during a logic-low condi-
tion and small enough to be able to overdrive the internal
pullup current and meet output high specifications
V SUPPLY
V SUPPLY
FUSE
R1
UVIN_
V CC
LOAD
V CC
LOAD
R2
MAX16008/
MAX16009
R3*
R1
UVIN_
MAX16008/
MAX16009
R3
SCR
UVOUT_
GND
*OPTIONAL. VALUES OF 10k Ω AND ABOVE ARE RECOMMENDED.
R2
GND
UVOUT_
Figure 3. Overvoltage Shutdown Circuit (with External Pass
MOSFET)
Figure 4. Overvoltage Shutdown Circuit (with SCR Fuse)
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16009TG | 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE, HIGH-ACCURACY, QUAD WINDOW VOLTA - Rail/Tube |
| MAX16009TG+ | 功能描述:监控电路 Quad Window Monitor 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 |
| MAX16009TG+T | 功能描述:监控电路 Quad Window Monitor 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 |
| MAX16009TG-T | 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE, HIGH-ACCURACY, QUAD WINDOW VOLTA - Tape and Reel |
| MAX1600EAI | 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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