Datasheet > SGM891B

SGM891B

更新时间： 2024-11-15 11:13:11

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
15页	750K
描述
Voltage Detector with Separated Sense Pin and Delay Capacitor Pin

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SGM891B 数据手册

SGM890B/SGM891B

Voltage Detector with Separated Sense Pin

and Delay Capacitor Pin

GENERAL DESCRIPTION

FEATURES

The SGM890B and SGM891B are low-power and

high-accuracy voltage detectors. The adjustable

threshold range is 0.8V to 5V with increments of 0.1V,

which greatly provides application flexibility.

● Operating Voltage Range: 1V to 6V

● High Accuracy Detection: ±1% (TYP)

● Low Power Consumption: 0.3μA (TYP) at V_IN= 1V

● Detection Voltage Range: 0.8V to 5V (0.1V Increments)

● Detection Voltage Temperature Coefficient:

±40ppm/℃ (TYP)

Since the sense pin (VSEN) of the devices is separate

from the power supply pin, it can monitor other power

supplies. And when the monitored power supply

voltage drops to 0V, the device can also maintain the

detection state.

● Adjustable Release Delay Time (SGM890B Only)

● Sense Pin Separates from Power Supply

● N-Channel Open-Drain Output

● -40℃ to +125℃ Operating Temperature Range

● Available in a Green SOT-23-5 Package

In addition, the C_Dpin of SGM890B has an external

capacitor connected to GND, which can adjust the

release delay time. Consequently delay time can be set

to more than 1s when the delay capacitor (C_D) is 1μF.

These devices are very suitable for applications in

power sequencing, reset sequencing and power

switching.

APPLICATIONS

Power Sequencing and Reset Sequencing

Power Switching

Automotive Equipment

Portable Equipment

The SGM890B and SGM891B are available in a Green

SOT-23-5 package. They are specified over the -40℃

to +125℃ operating temperature range.

Computers/Servers

TYPICAL APPLICATION

R_PULL

100kΩ

SGM890B/1B

VIN

Power Supply

VOUT

V_OUT

VSEN

Monitoring

C_D

(SGM890B Only)

V_IN

C_D

GND

Figure 1. Typical Application Circuit

SG Micro Corp

JUNE2021–REV. A

www.sg-micro.com

12 3 4 5 6 7...15

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