MIC2779_06 Datasheet, PDF (2/6 Pages) Micrel Semiconductor – Voltage Monitor with Adjustable Hysteresis

MIC2779
Ordering Information
Standard
MIC2779H-2BM5
MIC2779H-1BM5
MIC2779L-2BM5
MIC2779L-1BM5
Part Number
Marking Pb-Free
UPA2 MIC2779H-2YM5
UPA1 MIC2779H-1YM5
UPB2 MIC2779L-2YM5
UPB1 MIC2779L-1YM5
Marking
UPA2
UPA1
UPB2
UPB1
Output Polarity Accuracy
Active-High RST
2%
Active-High RST
1%
Active-Low /RST 2%
Active-Low /RST 1%
Temperature Range
–40ºC to +85ºC
–40ºC to +85ºC
–40ºC to +85ºC
–40ºC to +85ºC
Micrel, Inc.
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Pin Configuration
LTH GND HTH
3
2
1
4
RST
5
VDD
SOT-23-5 (M5)
“H” Version
LTH GND HTH
3
2
1
4
/RST
5
VDD
SOT-23-5 (M5)
“L” Version
Pin Description
Pin Number Pin Number
MIC2779H MIC2779L
1
1
2
2
3
3
4
4
5
5
Pin Name
HTH
GND
LTH
RST
/RST
VDD
Pin Function
High-Voltage Theshold (Input): Analog input to a comparator. When the
level on this pin initially rises above V_REF, the delay generator cycles and the
/RST remains low or RST remains high for a minimum of 140ms.
Ground
Low-Voltage Threshold (Input): Analog input to a comparator. This is the
voltage monitor input assigned to detect a low voltage condition. When the
level on this pin falls below V_REF, /RST or RST is asserted and the condition
is latched until V_HTH > V_REF.
Reset (Output): Push-pull output. This output is asserted and latched when
V_LTH <V_REF, indicating a low voltage condition. This state remains latched
until V_HTH > V_REF. The polarity of this signal (active-high or low) is deter
mined by the part number suffix. See ordering information.
Reset (Output): Push-pull output. This output is asserted and latched when
V_LTH <V_REF, indicating a low voltage condition. This state remains latched
until V_HTH > V_REF. The polarity of this signal (active-high or low) is deter
mined by the part number suffix. See ordering information.
Power Supply (Input): Independent supply input for internal circuitry.
MIC2779
2
January 2006