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参数资料
| 型号： | MAX16037PLA23+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/21页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP 2.32V 8-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： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 2.32V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN |
| 供应商设备封装： | 8-uDFN（2x2） |
| 包装： | 带卷 (TR) |
Low-Power Battery Backup
Circuits in Small μDFN Packages
BATTON Indicator
(MAX16035/MAX16039 Only)
BATTON is a push-pull output that asserts high when in
battery-backup mode. BATTON typically sinks 3.2mA
at a 0.4V saturation voltage. In battery-backup mode,
this terminal sources approximately 10μA from OUT.
Use BATTON to indicate battery-switchover status or to
supply base drive to an external pass transistor for
higher current applications (see Figure 3).
RESETIN Comparator
(MAX16036/MAX16040 Only)
An internal 1.235V reference sets the RESETIN thresh-
old voltage. RESET asserts when the voltage at
RESETIN is below 1.235V. Use the RESETIN function to
monitor a secondary power supply.
Use the following equations to set the reset threshold
voltage (V RTH ) of the secondary power supply (see
Figure 4):
V RTH = V REF (R1 / R2 + 1)
Power-Fail Comparator
The MAX16033–MAX16040 issue an interrupt (nonmask-
able or regular) to the μP when a power failure occurs.
The power line is monitored by two external resistors con-
nected to the power-fail input (PFI). When the voltage at
PFI falls below 1.235V, the power-fail output ( PFO ) drives
the processor’s NMI input low. An earlier power-fail warn-
ing can be generated if the unregulated DC input of the
regulator is available for monitoring. The MAX16033–
MAX16040 turn off the power-fail comparator and force
PFO low when V CC falls below the reset threshold volt-
age (see Figure 1). The MAX160_ _L devices provide
push-pull PFO outputs. The MAX160_ _P devices provide
open-drain PFO outputs.
V CC
V IN
MAX16036
where V REF = 1.235V. To simplify the resistor selection,
R1
MAX16040
choose a value for R2 and calculate R1.
R1 = R2 [(V RTH / V REF ) - 1]
Since the input current at RESETIN is 25nA (max), large
R2
RESETIN
values (up to 1M ? ) can be used for R2 with no signifi-
cant loss in accuracy.
Figure 4. Setting RESETIN Voltage for the
MAX16036/MAX16040
2.4V TO 5.5V
0.1 μ F
V CC
BATT
BATTON
OUT
MAX16035
MAX16039
(CEOUT)
(CEIN)
CE
ADDRESS
DECODE
CMOS RAM
A0–A15
μ P
GND
RESET
RESET
( ) FOR MAX16035 ONLY
Figure 3. MAX16035/MAX16039 BATTON Driving an External Pass Transistor
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| MAX16037PLA26+T | IC BATTERY BACKUP 2.63V 8-UDFN |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16037PLA26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.63V 8PIN UDFN - Rail/Tube |
| MAX16037PLA26+T | 功能描述:监控电路 Battery Backup 2.63V 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 |
| MAX16037PLA29+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX16037PLA29+T | 功能描述:监控电路 Battery Backup 2.93V 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 |
| MAX16037PLA31+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 3.08V 8PIN UDFN - Bulk |
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