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参数资料
| 型号： | MAX6457UKD3B+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC SUPPLY VOLT MONITOR SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 简单复位/加电复位 |
| 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 90 ms |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1417 (CN2011-ZH PDF) |
| 其它名称： | MAX6457UKD3B+TDKR |
MAX6457–MAX6460
High-Voltage, Low-Current Voltage Monitors in
SOT Packages
General Description
Features
The MAX6457–MAX6460 high supply voltage, low-power
voltage monitors operate over a 4V to 28V supply voltage
range. Each device includes a precision bandgap refer-
ence, one or two low-offset voltage comparators, internal
threshold hysteresis, power-good or reset timeout
options, and one or two high-voltage open-drain outputs.
Two external resistors (three for window detection) set the
trip threshold voltages.
The MAX6457 is a single voltage monitor for undervoltage
or overvoltage detection. A logic-based clear input either
latches the output for overvoltage applications or allows
the device to operate in transparent mode. The MAX6458
includes two comparators (one overvoltage and one
undervoltage) for window detection and a single output to
indicate if the monitored input is within an adjustable volt-
age window. The MAX6459 includes dual overvoltage/
undervoltage comparators with two independent com-
parator outputs. Use the MAX6459 as a window com-
o
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Wide Supply Voltage Range, 4V to 28V
Internal 2.25V ±2.5% Reference
Low Current (3.5 μ A, typ at 12V)
Open-Drain n-Channel Output (28V Compliant)
Internal Threshold Hysteresis Options
(0.5%, 5%, 8.3%)
Two IN-to-OUT Timeout Period Options
(50 μ s, 150ms)
Internal Undervoltage Lockout
Immune to Short Voltage Transients
Small SOT23 Packages
Few External Components
Fully Specified from -40°C to +125°C
Ordering Information
parator with separate undervoltage and overvoltage
outputs or as two independent, single voltage monitors.
The MAX6460 includes a single comparator and an inter-
nal reference, and can also accept an external reference.
The inverting and noninverting inputs of the comparator
are externally accessible to support positive or negative
PART
MAX6457 UKD_ _-T
MAX6458 UKD_ _-T
MAX6459 UT_-T
MAX6459UT_/V+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
5 SOT23
5 SOT23
6 SOT23
6 SOT23
voltage monitors and to configure the device for active-
high or active-low output logic.
The MAX6457/MAX6458 offer fixed timing options as a
voltage detector with a 50μs typical delay or as a reset cir-
cuit with a 90ms minimum reset timeout delay. The moni-
tored input must be above the adjusted trip threshold (or
within the adjusted voltage window for the MAX6458) for
the selected timeout period before the output changes
state. The MAX6459/MAX6460 offer only a fixed 50μs
timeout period. Internal threshold hysteresis options (0.5%,
5%, and 8.3% for the MAX6457/MAX6458/MAX6459, and
0.5% for the MAX6460) reduce output chatter in noise-
sensitive applications. Each device is available in a small
SOT23 package and specified over the extended temper-
ature range of -40°C to +125°C.
Applications
MAX6460 UT-T -40°C to +125°C 6 SOT23
Note: The MAX6457/MAX6458/MAX6459 are available with
factory-trimmed internal hysteresis options. The MAX6457 and
MAX6458 offer two fixed timing options. Select the desired hys-
teresis and timing options using Table 1 or the Selector Guide at
the end of the data sheet, and enter the corresponding letters
and numbers in the part number by replacing “_ _” or “_”. These
devices are offered in tape-and-reel only and must be ordered in
2500-piece increments.
Devices are available in both leaded and lead(Pb)-free/RoHS-
compliant packaging. Specify lead(Pb)-free by replacing “-T”
with “+T” when ordering.
/V denotes an automotive qualified part.
Pin Configurations appear at end of data sheet.
Typical Operating Circuit
Undervoltage Monitoring/Shutdown
BATTERY
+21V (NOMINAL)
IN
DC-DC
OUT
Overvoltage Monitoring/Protection
Window Voltage Detection Circuitry
Multicell Battery-Stack Powered Equipment
CHARGER
V CC
CONVERTER
SHDN
Notebooks, eBooks
Automotive
5-CELL
Li+
BATTERY
R1
IN+
MAX6457
OUT
R PULLUP
LOAD
Industrial
STACK
R2
Telecom
GND
CLEAR
Networking
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-2048; Rev 6; 12/12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6457UKD3C | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE LOW-CURRENT VOLTAGE M - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX6457UKD3C+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 5PIN SOT-23 - Rail/Tube |
| MAX6457UKD3C+T | 功能描述:监控电路 Single 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 |
| MAX6457UKD3C-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 |
| MAX6458UKD0A | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE LOW-CURRENT VOLTAGE M - Cut Tape Product |
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