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參數(shù)資料
| 型號： | MAX6896PALT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Ultra-Small, Adjustable Sequencing/Supervisory Circuits |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 1.50 X 1 MM, 0.80 MM HEIGHT, MICRO, DFN-6 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大小： | 266K |
| 代理商： | MAX6896PALT-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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6896PAZT+T | 功能描述:監(jiān)控電路 Adjustable Sequencer/Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6897AALT | 制造商:Maxim Integrated Products 功能描述:ULTRA-SMALL ADJUSTABLE SEQUENCING/ - Rail/Tube |
| MAX6897AALT/GG8-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6897AALT+ | 制造商:Maxim from Components Direct 功能描述:MAXIM MAX6897AALT+ PROCESSOR SUPERVISORS - Boxed Product (Development Kits) 制造商:Maxim 功能描述:Maxim MAX6897AALT+ Processor Supervisors |
| MAX6897AALT+T | 功能描述:監(jiān)控電路 Adjustable Sequencer/Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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