MIC2753_02 Datasheet, PDF (2/12 Pages) Micrel Semiconductor – Power Supply Supervisors

MIC2753/2754
Ordering Information
Part Number
Mark Lower Threshold
Voltage
MIC2753-RBM5 UDR
2.63V
MIC2753-SBM5 UDS
2.93V
MIC2753-TBM5 UDT
3.08V
MIC2753-MBM5 UDM
4.38V
MIC2753-LBM5 UDL
4.63V
MIC2754-RBM5 UER
2.63V
MIC2754-SBM5 UES
2.93V
MIC2754-TBM5 UET
3.08V
MIC2754-MBM5 UEM
4.38V
MIC2754-LBM5 UEL
4.63V
* Contact factory for voltages not listed.
Monitored
Voltage*
2.85V±5%
3.3V±10%
3.3V±5%
5.0V±10%
5.0V±5%
2.85V±5%
3.3V±10%
3.3V±5%
5.0V±10%
5.0V±5%
Upper Threshold
Voltage
3.08V
3.83V
3.53V
5.81V
5.38V
3.08V
3.83V
3.53V
5.81V
5.38V
Reset
Active High
Active High
Active High
Active High
Active High
Active Low
Active Low
Active Low
Active Low
Active Low
Temperature
Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Micrel
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Pin Configuration
VIN HV RST
3
2
1
UDx
4
5
GND
MR
MIC2753
Part
Identification
VIN GND HV
3
2
1
UEx
Voltage
Code
4
5
RST
MR
MIC2754
Pin Description
Pin No.
MIC2753
1
Pin No.
MIC2754
2
1
3
3
4
4
2
5
5
MIC2753/2754
Pin Name
RST
/HV
VIN
/RST
GND
/MR
Pin Function
Reset (Digital Output): Active-high output. Asserted when V_IN falls below
V_THU (undervoltage threshold), or rises above V_THO (overvoltage threshold).
Deasserted no less than 140ms after V_IN returns within threshold limits.
High-Voltage Flag (Open-Drain Output): /HV is asserted (active low) when
the input voltage exceeds the V_THO (overvoltage threshold). It indicates
power supply overvoltage and is intended for connection to a protection
device such as a “crowbar” circuit.
Analog Input: Voltage monitor input and power supply input to the IC.
Reset (Digital Output): Active-low digital output. This output will be asserted
whenever V_IN falls below V_THU (undervoltage threshold), or rises above
V_THO (overvoltage threshold). It will be deasserted no less than 140ms after
V_IN returns within the threshold limits.
Ground: Ground return for all IC functions.
Manual Reset (Digital Input): Logic low initiates immediate, unconditional
reset. If V_IN is within tolerance thresholds, when /MR is released (returns
high), the reset output(s) will be deasserted no less than 140ms later. /MR
may be driven by a CMOS or TTL logic signal or a mechanical switch.
(Switch debouncing is performed internally.) /MR has an internal pull-up to
VIN and may remain open if unused.
2
June 1999