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参数资料
| 型号： | MAX16033LLB44+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/21页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP 4.38V 10-UDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.38V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN |
| 供应商设备封装： | 10-uDFN（2x2） |
| 包装： | 带卷 (TR) |
Low-Power Battery Backup
Circuits in Small μDFN Packages
Monitoring a Negative Voltage
Connect the circuit as shown in Figure 9 to use the
power-fail comparator to monitor a negative supply rail.
PFO stays low when V- is good. When V- rises to cause
PFI to be above +1.235V, PFO goes high. Ensure V CC
comes up before the negative supply.
3.0V OR 3.3V
V CC
Negative-Going V CC Transients
The MAX16033–MAX16040 are relatively immune to
short-duration, negative-going V CC transients.
Resetting the μP when V CC experiences only small
R1
PFI
MAX16033–
MAX16040
PFO
glitches is not usually desired.
The Typical Operating Characteristics section contains
R2
a Maximum Transient Duration vs. Reset Threshold
Overdrive graph. The graph shows the maximum pulse
width of a negative-going V CC transient that would not
trigger a reset pulse. As the amplitude of the transient
increases (i.e., goes further below the reset threshold
PFO
V-
GND
voltage), the maximum allowable pulse width decreas-
es. Typically, a V CC transient that goes 100mV below
V L
V TRIP
0V
V-
the reset threshold and lasts for 25μs does not trigger a
V TRIP = R 2 ? ( V PFT + V PFH ) ?
?
V L = R 2 ? ( V PFT ) ?
+ ? ? ?
R 1 ?
?
R 1 ?
reset pulse.
A 0.1μF bypass capacitor mounted close to V CC pro-
vides additional transient immunity.
? ? 1 1 ?
? R 1 R 2 ?
? ? 1 1 ? V CC ?
? R 1 R 2 ?
V PFT = 1 . 235 V
V PFH = 12 mV
Figure 9. Monitoring a Negative Voltage
+ ? ?
V CC ?
?
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16033LLB46+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 4.63V 10PIN UDFN - Rail/Tube |
| MAX16033LLB46+T | 功能描述:监控电路 Battery Backup 4.63V 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 |
| MAX16033PLB23+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX16033PLB23+T | 功能描述:监控电路 Battery Backup 2.5V-Ep 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 |
| MAX16033PLB26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.63V 10PIN UDFN - Rail/Tube |
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