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参数资料
| 型号： | MAX6459UTB+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | High-Voltage, Low-Current Voltage Monitors in SOT Packages |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | ROHS COMPLIANT, MO-178AB, SOT-23, 6 PIN |
| 文件页数： | 3/15页 |
| 文件大小： | 168K |
| 代理商： | MAX6459UTB+T |
remains high. When VCC exceeds VTRIPHIGH, OUTB
asserts low while OUTA remains high. VTRIPLOW and
VTRIPHIGH are given by the following equations:
where RTOTAL = R1 + R2 + R3.
Use the following steps to determine the values for R1,
R2, and R3.
1) Choose a value for RTOTAL, the sum of R1, R2, and
R3. Because the MAX6458/MAX6459 have very
high input impedance, RTOTAL can be up to 5M.
2) Calculate R3 based on RTOTAL and the desired
upper trip point:
3) Calculate R2 based on RTOTAL, R3, and the desired
lower trip point:
4) Calculate R1 based on RTOTAL, R3, and R2:
R1 = RTOTAL - R2 - R3
Example Calculations for Window
Detection
The following is an example for calculating R1, R2, and
R3 of Figure 11 for window detection. Select the upper
and lower trip points (VTRIPHIGH and VTRIPLOW).
VCC = 21V
VTRIPHIGH = 23.1V
VTRIPLOW = 18.9V
For 5% hysteresis, VTH+ = 1.228 and VTH- = 1.167.
1) Choose RTOTAL = 4.2M = R1 + R2 + R3
2) Calculate R3
3) Calculate R2
R
VR
V
VM
V
k
TH
TOTAL
TRIPHIGH
3
1 228
4 2
23 1
223 273
=
×
=
=
+
(.
) ( .
)
.
R
VR
V
R
TH
TOTAL
TRIPLOW
23
=
×
-
R
VR
V
TH
TOTAL
TRIPHIGH
3
=
×
+
VV
R
RR
VV
R
TRIPLOW
TH
TOTAL
TRIPHIGH
TH
TOTAL
=
+
=
+
-
23
3
MAX6457–MAX6460
High-Voltage, Low-Current Voltage Monitors in
SOT Packages
______________________________________________________________________________________
11
MAX6457–
MAX6460
VMON
VCC
R1
R2
GND
RPULLUP
IN+
OUT
(OUTA FOR
MAX6459)
OUT
(OUTA)
Figure 12. Monitoring Voltages Other than VCC
MAX6457–
MAX6460
VCC
GND
RPULLUP
OUT/
OUTA/
OUTB
OUT/
OUTA/
OUTB
VCC (4V TO 28V)
VOUT (UP TO 28V)
Figure 13. Interfacing to Voltages Other than VCC
MAX6460
VCC
R1
R2
GND
VNEG
RPULLUP
IN+
REF
IN-
OUT
Figure 14. Monitoring Negative Voltages
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| MAX6459UTC+T | High-Voltage, Low-Current Voltage Monitors in SOT Packages |
| MAX6460UT+T | High-Voltage, Low-Current Voltage Monitors in SOT Packages |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6459UTC | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE LOW-CURRENT VOLTAGE M - Cut Tape Product |
| MAX6459UTC+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 6PIN SOT-23 - Rail/Tube |
| MAX6459UTC+T | 功能描述:监控电路 Dual Low C/V Voltage Monitor 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 |
| MAX6459UTC-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 |
| MAX6460UT | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE, LOW-CURRENT VOLTAGE MONITORS IN - Rail/Tube |
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