MCP809T-270I/TT Power Management ICs - PMIC by Microchip Technology

Microcontroller Supervisory Circuit w/ Push Pull Active Low

The MCP809 is a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized. It also operates as protection from brown-out conditions when the supply voltage drops below a safe operating level. MCP809 has a CMOS push-pull output with active low reset and is available in a choice of seven different trip voltages. It operates over the extended industrial temperature range (-40°C/+85°C). MCP809 is available in a SOT23-3 package.

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Holds microcontroller in reset until supply voltage reaches stable operating voltage
Resets microcontroller during power loss
Precision monitoring of 3V, 3.3V and 5V systems
Active low RESET pin (MCP809) or active high RESET (MCP810)
Push-pull output
Holds RESET for 350ms (typical)
RESET to VDD = 1.0V
Accuracy of +(-)125mV for 5V systems and +(-)75mV for 3V systems over temperature
45uA typical operating current
Industrial (I): -40C to +85C


Product Type Supervisor
Watchdog Timer No
Manual Reset No
Power Fail No
Operating Temp. Range (°C) -40 to 85
Vcc Range (V) 1.0 - 5.5
Nominal Reset Voltage (V) 2.7, 3.0, 3.15, 4.5, 4.6, 4.75, 4.85
Reset Type Active Low
Output Push-Pull
Typical Reset Pulse Width (ms) 350
Typical Supply Current (µA) 45
Pins | Packaging 3 | SOT-23
Temp Range -40C to +85C
Packing Media Tape and reel (3000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0083
Shipping Weight (kg) 0.039
Lead Count 3
Package Type SOT-23
Package Width or Size 1.3mm
Soldering Composition Matte Tin

Alternative Descriptions

Supervisor Push-Pull Active Low | Microchip Technology
Microchip MCP809T-270I/TT, Voltage Supervisor 3 V, 3.3 V, 5 V, 3-Pin SOT-23 | Microchip Technology Inc. MCP809T-270I/TT | RS Americas
SUPERVISORY CIRCUIT, SOT-23-3, 809 | element14
Voltage Supervisor 2.625V Act.Low SOT23 | RS
Microcontroller Mcu Voltage Supervisor 45 Ua 5.5V Sot23-3, Full Reel | Newark Electronics
MCP809 Series 2.7 V 150 ms Microcontroller Supervisory Circuit - SOT-23-3 | Future Electronics
Processor Supervisor 2.625V 3V/3.3V/5V 3-Pin SOT-23 T/R | Avnet America

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MCP809T-270I/TT?

Additional datasheets, footprints and schematics for MCP809T-270I/TT are listed on our Part Details page. You can also find images and similar parts to MCP809T-270I/TT on this page.

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What category does MCP809T-270I/TT fall under?

The MCP809T-270I/TT is listed under Semiconductors - ICs > Power Management ICs - PMIC > Supervisors & Monitors.

Can I view similar or alternative parts?

You can view similar parts to MCP809T-270I/TT when available in the Supervisors & Monitors range under the specifications section at the bottom of the details page.

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Is the MCP809T-270I/TT RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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