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SGM897 PDF预览

SGM897

更新时间: 2024-11-25 11:13:15
品牌 Logo 应用领域
圣邦微 - SGMICRO /
页数 文件大小 规格书
19页 879K
描述
Ultra-Small, Supervisory Circuit with Adjustable Sequencing

SGM897 数据手册

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SGM895/SGM896/SGM897/SGM898/SGM899  
Ultra-Small, Supervisory Circuits  
with Adjustable Sequencing  
GENERAL DESCRIPTION  
FEATURES  
The SGM895/SGM896/SGM897/SGM898/SGM899 are  
ultra-small, low-power and high-accuracy micro-  
processor supervisory circuits with adjustable  
sequencing capability. Since the high-impedance  
detection input pin (IN) with a 0.5V threshold voltage is  
separated from the power supply, these devices  
provide great flexibility with adjustable thresholds by  
using an external resistive divider. Moreover, the delay  
time can be adjusted by an external capacitor  
connected to the CDELAY pin. The devices are  
suitable for some power sequencing, reset sequencing  
and power-switching equipment.  
High Voltage Threshold Accuracy:  
+25: ±1%  
-40to +125: ±1.6%  
Low Power Consumption: 2.1μA (TYP)  
Operating Supply Voltage Range: 1.6V to 5.5V  
Capacitor-Adjustable Delay  
Enable Input Options:  
Active-High: SGM895 and SGM897  
Active-Low: SGM896, SGM898 and SGM899  
Output Options:  
Active-High Push-Pull: SGM895 and SGM899  
Active-Low Push-Pull: SGM896  
Active-High Open-Drain (28V Tolerant): SGM897  
Active-Low Open-Drain (28V Tolerant): SGM898  
Available in Ultra-Small Green UTDFN-1.45×1-6AL  
and TSOT-23-6 Packages  
When the input voltage at IN (VIN) exceeds the VTH  
threshold voltage (0.5V, TYP) and the ENABLE input is  
high (or nENABLE is low), the OUT is high (or nOUT is  
low). When VIN is lower than VTL (0.495V, TYP) or when  
the ENABLE input is low (or nENABLE is high), the  
OUT is low (or nOUT is high). The devices all have a  
capacitor-adjustable input delay time (tDELAY) between  
VIN greater than VTH and the output assertion. The  
SGM89_A has a capacitor-adjustable enable output  
delay time while the SGM89_P has a 350ns (TYP) fixed  
delay time.  
APPLICATIONS  
Portable Equipment  
Computers  
μC Power Monitoring  
Automotive Applications  
Medical Equipment  
Intelligent Instruments  
All devices are available in ultra-small Green  
UTDFN-1.45×1-6AL and TSOT-23-6 packages.  
TYPICAL APPLICATION  
1.6V to 5.5V  
VCC  
100nF  
R1  
R2  
ENABLE  
SGM895  
IN  
OUT  
CDELAY  
CCDELAY  
GND  
Figure 1. Typical Application Circuit of SGM895  
SG Micro Corp  
MAY 2023REV. A.4  
www.sg-micro.com  
 

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