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参数资料
| 型号： | MAX16033LLB44+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/21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
RESET
A μP’s reset input puts the μP in a known state. The
MAX16033–MAX16040 μP supervisory circuits assert a
reset to prevent code-execution errors during power-
up, power-down, and brownout conditions. RESET
asserts when V CC is below the reset threshold voltage
and for at least 140ms (t RP ) after V CC rises above the
reset threshold. RESET also asserts when MR is low
(MAX16033/MAX16037) or when RESETIN is below
1.235V (MAX16036/MAX16040). The MAX16034/
MAX16038 watchdog function causes RESET to assert in
pulses following a watchdog timeout (Figure 2). The
MAX160_ _L devices provide push-pull RESET outputs.
The MAX160_ _P devices provide open-drain RESET
outputs.
3V OR 3.3V
V CC
MAX16033–
Applications Information
Operation Without a Backup Power Source
The MAX16033–MAX16040 provide a battery backup
function. If a backup power source is not used, connect
BATT to GND and OUT to V CC .
Using a Super Cap as a
Backup Power Source
Super caps are capacitors with extremely high capaci-
tance, such as 0.47F. Figure 5 shows two methods to
use a super cap as a backup power source. Connect
the super cap through a diode to the 3V input (Figure
5a) or connect the super cap through a diode to 5V
(Figure 5b) if a 5V supply is available. The 5V supply
charges the super cap to a voltage close to 5V, allow-
ing a longer backup period. Since V BATT can be higher
than V CC while V CC is above the reset threshold volt-
age, there are no special precautions required when
using these μP supervisors with a super cap.
3V OR 3.3V
V CC
5V
MAX16033–
1N4148
MAX16040
1N4148
MAX16040
BATT
0.47F
(a)
Figure 5. Using a Super Cap as a Backup Source
0.47F
BATT
(b)
12
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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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