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参数资料
| 型号： | MAX6876ETX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/39页 |
| 文件大小： | 0K |
| 描述： | IC TRACKER/SUPERVISOR MON 36TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 序列发生器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页当前第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
Pin Description (continued)
PIN
24
25
26
27
28
29
30
31
NAME
REFIN
OUT4
GATE4
IN4
OUT3
GATE3
IN3
OUT2
FUNCTION
Reference Voltage Input. The MAX6876 can be configured to use the internal 1.25V reference or an
external voltage reference. REFIN is tri-stated when using the internal reference. REFIN provides the
threshold voltage for the voltage detectors when using an external voltage reference. Use an external
voltage reference when tighter voltage-detector accuracy is desired. When configured to an internal
reference, leave REFIN unconnected. When configured for an external reference, connect a 1.225V to
1.275V reference to REFIN.
Monitored Output Voltage. The OUT4 output is monitored to control the supply slew rate and tracking
performance. OUT1 – OUT4 begin to track up after the internal supply (ABP) exceeds the minimum
voltage requirements, V TRKEN > 1.285V threshold, ENABLE is logic high, and IN1 – IN4 are all within
their selected thresholds. The OUT4 output falls out of the tracking equation as OUT4 approaches
IN4; other OUT_ supplies continue tracking up without signaling a system fault. OUT_ outputs are
tracked down during power-off conditions.
Gate Drive for External n-Channel FETs. GATE4 begins enhancing the external n-channel FETs when
all monitored inputs are within their selected thresholds (0.5V to 5.5V), at least one IN_ input or V CC is
above the minimum operating voltage, V TRKEN > 1.285V threshold, and the ENABLE input is logic
high. During power-up mode, GATE_ voltages are enhanced with internal control loops forcing all
OUT_ voltages to track the reference ramp (SYNCH) at a programmed slew rate. An internal charge
pump boosts GATE4 to V IN4 + 5V to fully enhance the external n-channel FET when power-up is
complete.
Supply Voltage and Tracked Input Voltage. Nominal supply range is 0.5V to 5V. IN1, IN2, IN3, IN4, or
V CC must be greater than the internal UVLO (V ABP = 2.7V) to enable the tracking functionality. The
IN4 input is monitored with internally selected thresholds to ensure all supplies have stabilized before
tracking (or sequencing) is enabled.
Monitored Output Voltage. OUT3 is monitored to control the supply slew rate and tracking
performance. OUT1 – OUT4 begin to track up after the internal supply (ABP) exceeds the minimum
voltage requirements, V TRKEN > 1.285V threshold, ENABLE is logic high, and IN1 – IN4 are all within
their selected thresholds. The OUT3 output falls out of the tracking equation as OUT3 approaches
IN3; other OUT_ supplies continue tracking up without signaling a system fault. OUT_ outputs are
tracked down during power-off conditions.
Gate Drive for External n-Channel FETs. GATE3 begins enhancing the external n-channel FETs when
all monitored inputs are within their selected thresholds (0.5V to 5.5V), at least one IN_ input or V CC is
above the minimum operating voltage, V TRKEN > 1.285V threshold, and the ENABLE input is logic
high. During power-up mode, GATE_ voltages are enhanced with internal control loops forcing all
OUT_ voltages to track the reference ramp (SYNCH) at a programmed slew rate. An internal charge
pump boosts GATE3 to V IN3 + 5V to fully enhance the external n-channel FET when power-up is
complete.
Supply Voltage and Tracked Input Voltage. Nominal supply range is 0.5V to 5V. IN1, IN2, IN3, IN4, or
V CC must be greater than the internal UVLO (V ABP = 2.7V) to enable the tracking functionality. IN3 is
monitored with internally selected thresholds to ensure all supplies have stabilized before tracking (or
sequencing) is enabled.
Monitored Output Voltage. OUT2 is monitored to control the supply slew rate and tracking
performance. OUT1 – OUT4 begin to track up after the internal supply (ABP) exceeds the minimum
voltage requirements, V TRKEN > 1.285V threshold, ENABLE is logic high, and IN1 – IN4 are all within
their selected thresholds. OUT2 output falls out of the tracking equation as OUT2 approaches IN2;
other OUT_ supplies continue tracking up without signaling a system fault. OUT_ outputs are tracked
down during power-off conditions.
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6876ETX+ | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer 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 |
| MAX6876ETX+T | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer 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 |
| MAX6876ETX-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 |
| MAX6876EVCMOD2 | 功能描述:监控电路 Programmers, Development Systems 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 |
| MAX6876EVKIT | 功能描述:监控电路 Programmers, Development Systems 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 |
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