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参数资料
| 型号： | MAX6802UR48D3-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 3-Pin, Low-Power µP Reset Circuits |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | SOT-23, 3 PIN |
| 文件页数： | 5/7页 |
| 文件大小： | 147K |
| 代理商： | MAX6802UR48D3-T |
3-Pin, Low-Power
P Reset Circuits
_______________________________________________________________________________________
5
MAX6800/MAX6801/MAX6802
Table 1. Factory-Trimmed Reset Thresholds
TA = +25
°CTA = -40°C to +125°C
RESET
THRESHOLD
SUFFIX
MIN
TYP (VTH)
MAX
MIN
MAX
48
4.714
4.80
4.886
4.656
4.944
47
4.615
4.70
4.785
4.559
4.841
46
4.547
4.63
4.713
4.491
4.769
45
4.419
4.50
4.581
4.365
4.635
44
4.301
4.38
4.459
4.249
4.511
43
4.223
4.30
4.377
4.171
4.429
42
4.124
4.20
4.276
4.074
4.326
41
4.026
4.10
4.174
3.977
4.223
40
3.928
4.00
4.072
3.880
4.120
39
4.830
3.90
3.970
3.783
4.017
38
3.732
3.80
3.868
3.686
3.914
37
3.633
3.70
3.767
3.589
3.811
36
3.535
3.60
3.665
3.492
3.708
35
3.437
3.50
3.563
3.395
3.605
34
3.339
3.40
3.461
3.298
3.502
33
3.241
3.30
3.359
3.201
3.399
32
3.142
3.20
3.258
3.104
3.296
31
3.025
3.08
3.135
2.988
3.172
30
2.946
3.00
3.054
2.910
3.090
29
2.877
2.93
2.983
2.842
3.018
28
2.750
2.80
2.850
2.716
2.884
27
2.651
2.70
2.749
2.619
2.781
26
2.583
2.63
2.677
2.551
2.709
Ensuring a Valid Reset Output
Down to VCC = 0
When VCC falls below 1V and approaches the minimum
operating voltage of 0.7V, push/pull-structured reset
sinking (or sourcing) capabilities decrease drastically.
High-impedance CMOS-logic inputs connected to the
RESET pin can drift to indeterminate voltages. This
does not present a problem in most cases, since most
Ps and circuitry do not operate when VCC drops
below 1V. For the MAX6801 application, where RESET
must be valid down to 0, adding a pulldown resistor
between RESET and GND removes stray leakage cur-
rents, holding RESET low (Figure 2a). The pulldown
resistor value is not critical; 100k
is large enough not
to load RESET and small enough to pull it low. For the
MAX6800 application, where RESET must be valid to
VCC = 0, a 100k
pullup resistor between RESET and
VCC will hold RESET high when VCC falls below 0.7V
(Figure 2b).
Since the MAX6802 has an open-drain, active-low out-
put, it typically uses a pullup resistor. With this device,
RESET will most likely not maintain an active condition,
but will drift to a non-active level due to the pullup
resistor and the reduced sinking capability of the open-
drain device. Therefore, this device is not recommend-
ed for applications where the RESET pin is required to
be valid down to VCC = 0.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6803US26D1 | 制造商:Maxim Integrated Products 功能描述:4-PIN LOW-POWER MICROPROCESSOR RES - Rail/Tube |
| MAX6803US26D1+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.63V 5UA 4PIN SOT-143 - Rail/Tube |
| MAX6803US26D1+T | 功能描述:监控电路 Single uPower 4-Pin Reset Circuit 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 |
| MAX6803US26D1-T | 功能描述:监控电路 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 |
| MAX6803US26D2 | 制造商:Maxim Integrated Products 功能描述:4-PIN LOW-POWER MICROPROCESSOR RES - Rail/Tube |
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