MDT7820
Voltage Detector
4. Pin Function Description
1.General Description
MDT7820ST
MDT7820 is a voltage detector which
can generate a low level signal whenever the
input voltage (supply voltage) falls below
threshold voltage level (2.0v).
1
2
VIN
MDT7820ST23
VIN
3
3
VSS
2. Features
●
●
VDET
Low detectable voltage 2.0V
Low power consumption
●
Built-in hysteresis characteristic
1
2
VSS
3. Applications
●
●
●
VDET
Battery detectors
Power checkers
Micro-controller reset
Pin Name
VSS
VDET
I/O
Function
Ground
Open
Supply voltage
Drain
detector. Output low if
Vin < 2.0V.
Input
Supply voltage input
VIN
ORDERING INFORMATION
Device
MDT7820ST
MDT7820ST23
Package
SOT89
SOT23
This specification are subject to be changed without notice. Any latest information please preview
P.1
2006/11
http;//www.mdtic.com.tw
Ver 1.1
MDT7820
Voltage Detector
5. Electrical Characteristics
Parameter
Low Battery Detect
Voltage (LBDV)
Test Conditions
Min.
HI to LOW
Detectable Voltage
1.9
LOW to HI
Detectable Voltage
---------------------------
No load
---------------------------
VIN=2V
2.0
0.5
Typ.
2.0
2.1
0.1
2
1.2
9
Max.
2.1
2.2
0.15
5
7
Unit
V
V
V
uA
V
mA
LBDV hysteresis
Width
Ivin
Vin
Operating Voltage
VDET Sink Current
6.Application Circuit & Block Diagram
This specification are subject to be changed without notice. Any latest information please preview
P.2
2006/11
http;//www.mdtic.com.tw
Ver 1.1
MDT7820
Voltage Detector
EXTERNAL COMPONENT : RPU=47K
This specification are subject to be changed without notice. Any latest information please preview
P.3
2006/11
http;//www.mdtic.com.tw
Ver 1.1
