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参数资料
| 型号： | MAX16038 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Power Battery Backup Circuits in Small レDFN Packages |
| 中文描述： | 低功耗电池备份电路，采用微型µDFN封装 |
| 文件页数： | 15/21页 |
| 文件大小： | 228K |
| 代理商： | MAX16038 |
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.
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
glitches is not usually desired.
The Typical Operating Characteristics section contains
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
voltage), the maximum allowable pulse width decreas-
es. Typically, a V
CC
transient that goes 100mV below
the reset threshold and lasts for 25μs does not trigger a
reset pulse.
A 0.1μF bypass capacitor mounted close to V
CC
pro-
vides additional transient immunity.
M
Low-Power Battery Backup
Circuits in Small μDFN Packages
______________________________________________________________________________________
15
GND
PFI
R2
R1
V-
MAX16033–
MAX16040
3.0V OR 3.3V
V
CC
PFO
PFO
0V
V
L
V-
V
TRIP
Figure 9. Monitoring a Negative Voltage
V
R
V
V
R
R
V
R
V
R
V
R
R
V
R
V
V
V
mV
TRIP
PFT
PFH
CC
1
L
PFT
CC
1
PFT
PFH
+
+
+
1 235
12
=
(
)
=
(
)
=
=
2
1
1
1
2
2
1
1
1
2
相关PDF资料 |
PDF描述 |
|---|---|
| MAX16039 | Low-Power Battery Backup Circuits in Small レDFN Packages |
| MAX16040 | Low-Power Battery Backup Circuits in Small レDFN Packages |
| MAX16047 | 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers |
| MAX16047ETN | 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers |
| MAX16049 | Hold function, Loop detection; Vin (V) max.: 24; Icc (mA) max.: 6.45; Fmax (kHz) max.: 400; Topr [Tjopr] (°C): -40 to +125; Remarks: Power factor collection; Package: DIP; Pin count: 16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16038LLA23+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX16038LLA23+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 |
| MAX16038LLA26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.63V 8PIN UDFN - Rail/Tube |
| MAX16038LLA26+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 |
| MAX16038LLA29+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.93V 8PIN UDFN - Rail/Tube |
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