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参数资料
| 型号： | MAX6895AALT-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Ultra-Small, Adjustable Sequencing/Supervisory Circuits |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 1.50 X 1 MM, 0.80 MM HEIGHT, MICRO, DFN-6 |
| 文件页数： | 10/13页 |
| 文件大小： | 266K |
| 代理商： | MAX6895AALT-T |
MAX6895–MAX6898
Ultra-Small, Adjustable
Sequencing/Supervisory Circuits
6
_______________________________________________________________________________________
Detailed Description
The MAX6895–MAX6898 is a family of ultra-small, low-
power, sequencing/supervisory circuits. These devices
provide adjustable voltage monitoring for inputs down to
0.5V. They are ideal for use in power-supply sequenc-
ing, reset sequencing, and power-switching applica-
tions. Multiple devices can be cascaded for complex
sequencing applications.
Voltage monitoring is performed through a high-imped-
ance input (IN) with an internally fixed 0.5V threshold.
When the voltage at IN falls below 0.5V or when the
enable input is deasserted (ENABLE = low or ENABLE =
high), the output deasserts (OUT goes low or OUT goes
high). When VIN rises above 0.5V and the enable input is
asserted (ENABLE = high or ENABLE = low), the output
asserts (OUT goes high or OUT goes low) after a capaci-
tor-programmable time delay.
With VIN above 0.5V, the enable input can be used to
turn the output on or off. After the enable input is assert-
ed, the output turns on with a capacitor-programmable
delay period (A version) or with a 150ns propagation
delay (P version). Tables 1 and 2 detail the output state
depending on the various input and enable conditions.
Supply Input (VCC)
The device operates with a VCC supply voltage from
1.5V to 5.5V. To maintain a 1.75% accurate threshold,
VCC must be above 1.5V. When VCC falls below the
UVLO threshold, the output deasserts. When VCC falls
below 1.2V the output state cannot be determined. For
noisy systems, connect a 0.1F ceramic capacitor from
VCC to GND. For the push-pull active-high output option,
a 100k
external pulldown resistor to ground ensures
the correct logic state for VCC down to 0.
Monitor Input (IN)
Connect the center point of a resistive divider to IN to
monitor external voltages (see R1 and R2 of the Typical
Operating Circuit). IN has a rising threshold of VTH =
0.5V and a falling threshold of 0.495V (5mV hysteresis).
When VIN rises above VTH and ENABLE is high (or
ENABLE is low) OUT goes high (OUT goes low) after
the programmed tDELAY period. When VIN falls below
0.495V, OUT goes low (OUT goes high) after a 16s
delay. IN has a maximum input current of 15nA so
large-value resistors are permitted without adding sig-
nificant error to the resistive divider.
MAX6895
LOGIC
1.0V
250nA
0.5V
IN
OUT
CDELAY
GND
ENABLE
VCC
IN
ENABLE
OUT
VIN < VTH
Low
VIN < VTH
High
Low
VIN > VTH
Low
OUT = VCC (MAX6895)
VIN > VTH
High
OUT = high impedance
(MAX6897)
Figure 1. MAX6895 Functional Diagram
Table 1. MAX6895/MAX6897 Output
IN
ENABLE
OUT
OUT = VCC (MAX6896)
VIN < VTH
Low
OUT = high impedance
(MAX6898)
OUT = VCC (MAX6896)
VIN < VTH
High
OUT = high impedance
(MAX6898)
VIN > VTH
Low
OUT = VCC (MAX6896)
VIN > VTH
High
OUT = high impedance
(MAX6898)
Table 2. MAX6896/MAX6898 Output
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6895AAZT+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR ADJV 10UA 6PIN TSOT-23 - Rail/Tube |
| MAX6895AAZT+T | 功能描述:监控电路 Adjustable Sequencer/Supervisor 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 |
| MAX6895PALT+ | 制造商:Maxim Integrated Products 功能描述:MAXIM MAX6895PALT+ PROCESSOR SUPERVISORS - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Maxim MAX6895PALT+ Processor Supervisors |
| MAX6895PALT+T | 功能描述:监控电路 Adjustable Sequencer/Supervisor 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 |
| MAX6895PALT-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 |
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