MCP131T-315E/LB

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MCP131T-315E/LB

IC SUPERVISOR 1 CHANNEL SC70-3

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Spezifikationen

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type Simple Reset/Power-On Reset
NumberofVoltagesMonitored 1
Voltage-Threshold 3.08V
Output Open Drain or Open Collector
Reset Active Low
ResetTimeout 80ms Minimum
OperatingTemperature -40°C ~ 125°C (TA)
MountingType Surface Mount
Package/Case SC-70, SOT-323

Übersicht

Description

MCP131T-315E/LB is a fixed-threshold voltage supervisor (a microcontroller reset/voltage detector) from Microchip.
Key points:
- Trip point: nominally 3.15 V. It asserts a reset when VDD falls below this, and releases reset after VDD rises above the threshold.
- Purpose: provides brown-out and power-on reset protection for microcontrollers and other digital ICs.
- Output: active/reset output (typical to drive MCU reset lines; check datasheet for exact output type and any required pull-ups).
- Package/quality: available in small lead-free (LB) variants; suitable for -40°C to +125°C operation depending on the exact revision.
- Use case: simple, self-contained reset supervision with minimal external components (often just decoupling).
Notes:
- Verify the exact electrical characteristics, packaging, and pinout in the datasheet for MCP131T-315E/LB.
- If you need a different trip point or features (manual reset input, etc.), Microchip offers other MCP131/132/134 variants.

Features

Here are the key features of MCP131T-315E/LB:
- Fixed 3.15 V voltage supervisor threshold (monitor/brown-out reset).
- Self-contained: no external components required.
- Operating supply range typically 2.0–5.5 V.
- Ultra-low quiescent current (microamp range).
- Manual reset input (MR) to force a reset externally.
- Reset output: active-low RESET# with a push-pull drive suitable for MCU reset lines.
- Built-in power-on reset/brown-out detection with threshold hysteresis to prevent chatter.
- Extended temperature option: -40°C to +125°C (suffix E).
- Packaging: Tape-and-Reel (suffix T) and lead-free (suffix LB).
- Small footprint and cost-effective solution for MCU/PMIC supervision.

Package

It’s in a SOT-23-3 (3-pin) lead-free package. The “T” denotes SOT-23, and “/LB” indicates Pb-free/RoHS compliant packaging.

Pinout

- Pin count: 3 pins (VDD, GND, RESET output).
- Function: Fixed-threshold voltage detector/supervisor (3.15 V) that resets the MCU with an active-low RESET signal during power-up/power-down.

Manufacturer

- Manufacturer: Microchip Technology Inc.
- What kind of company: A US-based semiconductor company that designs and manufactures microcontrollers (PIC family), analog and mixed-signal ICs, memory, and related components (including reset/voltage-sense supervisory devices). Headquartered in Chandler, Arizona; founded in 1989 as a spin-off from General Instrument.

Application

MCP131T-315E/LB is a fixed 3.15 V voltage supervisor used as a reset generator. Applications include:
- Power-on/reset and brown-out protection for 3.0–3.6 V MCU/digital ICs
- System initialization in 3.3 V rails and DC-DC converter front ends
- Reset supervision for microcontrollers, memories, FPGAs/CPLDs, and ASICs
- Battery-powered/portable embedded systems requiring deterministic reset on power-up/down
(Provides a reliable reset signal when the supply dips below 3.15 V.)

Equivalent

MCP131T-315E/LB is a 3.15 V fixed-threshold supervisor/reset. Cross-refs (3.0–3.3 V class) include:
- TI TLV803 family (nearest 3.08 V option)
- TI TPS3808/TPS3809 (≈3.08 V)
- Analog Devices ADM803/ADM803A
- Maxim MAX809/MAX810 (3.0 V variants)
- Onsemi CAT811/CAT810 (3.0 V options)
Verify exact threshold, reset polarity, package, and lead-free marking when cross-referencing.

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