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MIC2785

Dual Supply Voltage Monitor with Manual Reset

Status: In Production

Features:

  • No external components
  • Monitors input voltage for undervoltage condition
  • Separate inputs for supply (VDD) and monitor (VIN)
  • ±1.5% VIN threshold voltage accuracy
  • Valid /RST state with VIN down to 0.0V
  • Valid /RST state with VDD down to 1.20V
  • Factory-programmed 1.62V reference
  • Manual reset input (/MR)
  • Active low RESET (/RST) output
  • Ultra-low input current - 5µA total (VIN and VDD)
  • Rejects brief input transients
  • -40°C to 85°C operating temperature range
  • RoHS lead-free compliant
  • Available in tiny 6-pin 1.2mm x 1.2mm Thin QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2785 is a micropower voltage monitor that provides undervoltage monitoring and manual reset capability in a tiny 1.2mm x 1.2mm QFN package. The MIC2785 provides a monitored voltage input (VIN) separate from the supply input (VDD). This ensures that the reset (/RST) output maintains a valid output state when the voltage being monitored ramps up or down. The device also includes a manual reset input (/MR). The /RST output is an active low push-pull output.

The undervoltage detector compares the VIN pin voltage against the factory-programmed threshold of 1.62V. The reset output is asserted any time the input voltage drops below the programmed threshold voltage. A reset can be generated at any time by asserting the manual reset input, /MR. This reset output will remain active until the release of /MR. The /MR input can also be used to daisy-chain the MIC2785 onto existing power monitoring circuitry or other supervisors. Hysteresis is included to prevent chattering due to noise.

The MIC2785 consumes a minimum of quiescent current, only 5µA, 1.5µA from the main supply pin and 3.5µA from the input pin. Offered in a tiny space saving 6-pin QFN 1.2mm x 1.2mm package.

Additional Features
    • No external components
    • Monitors input voltage for undervoltage condition
    • Separate inputs for supply (VDD) and monitor (VIN)
    • ±1.5% VIN threshold voltage accuracy
    • Valid /RST state with VIN down to 0.0V
    • Valid /RST state with VDD down to 1.20V
    • Factory-programmed 1.62V reference
    • Manual reset input (/MR)
    • Active low RESET (/RST) output
    • Ultra-low input current - 5µA total (VIN and VDD)
    • Rejects brief input transients
    • -40°C to 85°C operating temperature range
    • RoHS lead-free compliant
    • Available in tiny 6-pin 1.2mm x 1.2mm Thin QFN package
Parametrics
Name
Value
Product Type
Supervisor
Manual Reset
Yes
Operating Temp. Range (°C)
-40 to 85
Vcc Range (V)
1.5 - 5.5
Nominal Reset Voltage (V)
1.62
Reset Type
Active Low
Output
Push-Pull
Typical Reset Pulse Width (ms)
0.025
Typical Supply Current (µA)
5

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2785-16YFT-TR
0.081358
6
UQFN
1.2x1.2x0.6mm
NiPDAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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