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| 型号： | SP791CN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU LP 16NSOIC |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.65V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 带卷 (TR) |
?
SP791
Low Power Microprocessor Supervisory
with Battery Switch-Over
s Precision 4.65V Voltage Monitoring
s 200ms Power-OK/Reset Time Delay
s Independent Watchdog Time-Preset or Adjustable
s 75 μ A Maximum Operating Supply Current
s 1.0 μ A Maximum Battery Backup Current
s 0.1 μ A Maximum Battery Standby Current
s Power Switching
250mA Output in Vcc Mode (0.6 ? )
25mA Output in Battery Mode (5 ? )
s On-Board Gating of Chip-Enable Signals
Memory Write-Cycle Completion
6ns CE Gate Propagation Delay
s Voltage Monitor for Power-Fail or Low Battery
s Backup-Battery Monitor
s RESET Valid to Vcc=1V
s Pin Compatible Upgrade to MAX791
Now available in Lead Free
DESCRIPTION
The SP791 is a microprocessor ( μ P) supervisory circuit that integrates a myriad of compo-
nents involved in discrete solutions to monitor power-supply and battery-control functions in
μ P and digital systems. The SP791 offers complete μ P monitoring and watchdog functions.
The SP791 is ideal for a low-cost battery management solution and is well suited for portable,
battery-powered applications with its supply current of 40 μ A. The 6ns chip-enable propaga-
tion delay, the 25mA current output in battery-backup mode, and the 250mA current output
in standard operation also makes the SP791 suitable for larger scale, high-performance
equipment.
SP791
15 RESET
1 V BATT 3 Vcc
V OUT
_
+
MR
9
+
_
RESET
GENERATION
4.65V
_
+
150mV
+
_
10
5
LOWLINE
BATT ON
+
_
2
V OUT
SWT
8
TIMEBASE FOR
RESET AND
WATCHDOG
WATCHDOG
WDI
PFI
11
7
+
WATCHDOG
TRANSITION
DETECTOR
TIMER
2V
+
_
CHIP-ENABLE
OUTPUT
CONTROL
_
1.25V
12
CE OUT
6
PFO
14
16
4
GND
13
Figure 1. Block Diagram
WDO WDPO
CE IN
SP791DS/08
SP791 Low Power Microprocessor Supervisory with Battery Switch-Over
1
? Copyright 2000 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP791CP | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP791EB | 功能描述:插座和适配器 Low Power MPU Sprvsr w/Battry Switch-Over RoHS:否 制造商:Silicon Labs 产品:Adapter 用于:EM35x |
| SP791EK | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP791EN | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP791EN-L | 功能描述:监控电路 LW PWR MICRO 5.5V 25mA-250mA BAT SW/OV 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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