Document
MCP102/103/121/131
Micropower Voltage Supervisors
Features
• Passes Automotive AEC-Q100 Reliability Testing • Ultra-Low Supply Current: 1.75 µA
(steady-state maximum) • Precision Monitoring Options of:
- 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V and 4.63V
• Resets Microcontroller in a Power-Loss Event • RST Pin (active-low):
- MCP121: Active-low, Open-drain - MCP131: Active-low, Open-drain with Inter-
nal Pull-up Resistor - MCP102 and MCP103: Active-low, Push-pull • Reset Delay Timer (120 ms delay, typical) • Available in SOT-23, TO-92 and SC70 Packages • Temperature Range: - Extended: -40°C to +125°C
(except MCP1XX-195) - Industrial: -40°C to +85°C (MCP1XX-195 only) • Pb-free Devices
Applications
• Critical Microcontroller and Microprocessor Power-monitoring Applications
• Computers • Intelligent Instruments • Portable Battery-powered Equipment
General Description
The MCP102/103/121/131 devices are voltage supervisor devices designed to keep a microcontroller in reset until the system voltage has reached and stabilized at the proper level for reliable system operation. Table 1 shows the available features for these devices.
Package Types
SOT-23/SC70
TO-92
MCP102/121/131
RST 1 VDD 2
3 VSS
RST VDD VSS
SOT-23/SC70
VSS 1
3 VDD
MCP103
RST 2
Block Diagram
VDD
Comparator
+
Reset
–
Delay Circuit
Output Driver
R (1) RST
Band Gap Reference
VSS Note: MCP131 only
2004-2023 Microchip Technology Inc. and its subsidiaries
DS20001906E-page 1
MCP102/103/121/131
TABLE 1: DEVICE FEATURES
Device
Output Type Pull-up Resistor
Reset Delay (typ)
MCP102 Push-pull No
120 ms
MCP103 Push-pull No
120 ms
MCP121 Open-drain External
120 ms
MCP131 Open-drain Internal (~95 kΩ) 120 ms
MCP111 Open-drain External
No
MCP112 Push-Pull No
No
Package Pinout (Pin # 1, 2, 3)
Comment
RST, VDD, VSS VSS, RST, VDD RST, VDD, VSS RST, VDD, VSS VOUT, VSS, VDD
VOUT, VSS, VDD
—
—
—
— See MCP111/112 Data Sheet (DS21889) See MCP111/112 Data Sheet (DS21889)
DS20001906E-page 2
2004-2023 Microchip Technology Inc. and its subsidiaries
MCP102/103/121/131
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings†
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V Input current (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 mA Output current (RST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 mA Rated Rise Time of VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/µs All inputs and outputs (except RST) w.r.t. VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to (VDD + 1.0V) RST output w.r.t. VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to 13.5V Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to + 150°C Ambient temperature with power applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to + 125°C Maximum Junction temperature with power applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C ESD protection on all pins: HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2000V MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±200V
† Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits are specified for: VDD = 1V to 5.5V, RPU = 100 kΩ (MCP121 only), TA = -40°C to +125°C.
Parameters
Sym.
Min.
Typ. Max. Units
Conditions
Operating Voltage Range
Specified VDD Value to RST low
Operating Current
MCP102,
MCP103,
MCP121
VDD
1.0
VDD
1.0
IDD
—
—
—
5.5
V—
—
V
IRST = 10 µA, VRST < 0.2V
<1
1.75
µA Reset Power-up Timer (tRPU) Inactive
—
20.0
µA Reset Power-up Timer (tRPU) Active
Note 1: 2: 3: 4: 5:
6:
MCP131
IDD
—
<1
.