MIC803
3-Pin Microprocessor Supervisor Circuit
with Open-Drain Reset Output
General Description Features
The MIC803 is a single-voltage supervisor with open-drain 4.5A supply current (typical) at 3.6V
reset output that provides accurate power supply
Open-drain /RESET output
monitoring and reset generation in microprocessor-based
/RESET remains valid with V as low as 1V
CC
systems. The function of the device is to assert a reset
20ms, 140ms, or 1120ms (minimum) reset timeout
signal if the power supply voltage drops below the reset
options
threshold voltage, and retain this reset for the reset
timeout period once the power supply increases above the 2.63V to 4.63V preset voltage threshold options
reset threshold voltage.
2.5% voltage threshold accuracy over temperature
3-pin SC70-3 package (2.0mm 2.1mm)
The MIC803 consumes only 4.5A of supply current and
offers three reset delay periods of 20ms, 140ms, and
3-pin SOT-23 package (2.3mm 2.9mm)
1120ms (minimum). It features factory-programmed reset
-40C to +125C junction temperature range
threshold levels from 2.63V to 4.63V to accommodate
3.0V, 3.3V, and 5.0V power supplies. It is available in the
Applications
compact 3-pin SC-70 and SOT-23 packages.
Critical microcomputer power monitoring
Datasheets and support documentation are available on
Portable equipment
Micrels web site at: www.micrel.com.
Solid state drives
Printers/computers
Embedded controllers
Typical Application
V
CC
V V
CC CC
100k
MIC803 P
RESET RESET
GND
GND
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC803
(1)
Ordering Information
Nominal Minimum
(2)
Part Number Marking Junction Temperature Range Package
(3)
VTH (V) tRESET (ms)
MIC803-46D2VC3 AS 4.63 20 40 to +125C SC70-3
MIC803-44D2VC3 AP 4.38 20 40 to +125C SC70-3
MIC803-41D2VC3 AK 4.10 20 40 to +125C SC70-3
MIC803-40D2VC3 A2 4.00 20 40 to +125C SC70-3
MIC803-31D2VC3 AG 3.08 20 40 to +125C SC70-3
MIC803-30D2VC3 AV 3.00 20 40 to +125C SC70-3
MIC803-29D2VC3 AD 2.93 20 40 to +125C SC70-3
MIC803-26D2VC3 AA 2.63 20 40 to +125C SC70-3
MIC803-46D3VC3 AT 4.63 140 40 to +125C SC70-3
MIC803-44D3VC3 AQ 4.38 140 40 to +125C SC70-3
MIC803-41D3VC3 AM 4.10 140 40 to +125C SC70-3
MIC803-40D3VC3 A5 4.00 140 40 to +125C SC70-3
MIC803-31D3VC3 A4 3.08 140 40 to +125C SC70-3
MIC803-30D3VC3 AX 3.00 140 40 to +125C SC70-3
MIC803-29D3VC3 AE 2.93 140 40 to +125C SC70-3
MIC803-26D3VC3 AB 2.63 140 40 to +125C SC70-3
MIC803-46D4VC3 AU 4.63 1120 40 to +125C SC70-3
MIC803-44D4VC3 AR 4.38 1120 40 to +125C SC70-3
MIC803-41D4VC3 AN 4.10 1120 40 to +125C SC70-3
MIC803-40D4VC3 A6 4.00 1120 40 to +125C SC70-3
MIC803-31D4VC3 AJ 3.08 1120 40 to +125C SC70-3
MIC803-30D4VC3 AZ 3.00 1120 40 to +125C SC70-3
MIC803-29D4VC3 A3 2.93 1120 40 to +125C SC70-3
MIC803-26D4VC3 AC 2.63 1120 40 to +125C SC70-3
MIC803-46D2VM3 AS 4.63 20 40 to +125C SOT23-3
MIC803-44D2VM3 AP 4.38 20 40 to +125C SOT23-3
MIC803-41D2VM3 AK 4.10 20 40 to +125C SOT23-3
MIC803-40D2VM3 A2 4.00 20 40 to +125C SOT23-3
MIC803-31D2VM3 AG 3.08 20 40 to +125C SOT23-3
MIC803-30D2VM3 AV 3.00 20 40 to +125C SOT23-3
MIC803-29D2VM3 AD 2.93 20 40 to +125C SOT23-3
MIC803-26D2VM3 AA 2.63 20 40 to +125C SOT23-3
MIC803-46D3VM3 AT 4.63 140 40 to +125C SOT23-3
Note:
1. All devices available in tape and reel only. (Order entry PN, add TR. Example: MIC803-26D4VM3 TR)
Standard/full reel quantity is 3,000 pieces.
Reel diameter is 7 inches. Hub diameter is 2 inches. Width is 8mm.
2. Underbar symbol (_) may not be to scale.
3. 40 to +85C temperature range.
August 3, 2015 Revision 1.2
2