TPS3809I50QDBVRQ1

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TPS3809I50QDBVRQ1

IC SUPERVISOR 1 CHANNEL SOT23-3

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  • Fr. Teil #TPS3809I50QDBVRQ1
  • Paket SOT23-3
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Spezifikationen

Package Tape & Reel (TR),Cut Tape (CT),Bulk
Series Automotive, AEC-Q100
ProductStatus Active
Type Simple Reset/Power-On Reset
NumberofVoltagesMonitored 1
Voltage-Threshold 4.55V
Output Push-Pull, Totem Pole
Reset Active Low
ResetTimeout 120ms Minimum
OperatingTemperature -40°C ~ 125°C (TA)
MountingType Surface Mount
Package/Case TO-236-3, SC-59, SOT-23-3

Übersicht

Description

TPS3809I50QDBVRQ1 is a Texas Instruments automotive-grade voltage supervisor (reset generator) from the TPS3809 family. It monitors the supply rail (VDD) and asserts a reset output when the voltage falls below its fixed 1.50-V threshold (I50 variant) or during power-on/brown-out events, then releases reset once VDD is stable above the threshold. This provides a known startup state for microcontrollers and digital ICs, protecting against improper operation after power glitches.
Key points
- Fixed reset-threshold variant: ~1.50 V (I50) tailored for low-voltage systems
- Automotive-qualified: Q-graded device suitable for harsh environments
- Single-device reset supervision with a deterministic reset output
- Ultra-low quiescent current; compact DBV package (QDBVRQ1 branding)
- Common Uses: MCU/SoC startup reset, brown-out protection in automotive and industrial designs
Note: Check the datasheet for exact electrical specs, timing, pinout, and packaging details.

Features

Key features of TPS3809I50QDBVRQ1:
- Fixed 1.50 V reset threshold (I50 variant) for 1.5 V rails
- Ultra-low quiescent current (typical ~1 µA)
- Wide operating voltage range (approximately 1.65 V to 5.5 V)
- Power-on reset and brown-out/reset protection to guarantee proper MCU startup
- Reset output is a dedicated active-low RESET# that can drive MCU pins directly
- Threshold hysteresis and noise/glitch immunity to prevent spurious resets
- Automotive-grade, AEC-Q100 qualified, with extended temperature range (-40°C to 125°C)
- Small package (DBV) with RoHS-compliant, suitable for tight layouts
Note: specifics can vary by packaging/variant; consult the datasheet for exact electrical characteristics.

Package

DBV package (SOT-23-3/SC-70-3 style). The TPS3809I50QDBVRQ1 automotive-grade device is in the DBV small 3‑pin package.

Pinout

- Pin count: 3 pins (SOT-23-3 package, code DBV).
- Function: Fixed-threshold voltage supervisor / reset generator. Monitors VDD with a 1.50 V threshold and generates a reset signal to a microcontroller until VDD is above threshold and stable. Automotive-grade variant (Q).

Manufacturer

Manufacturer: Texas Instruments (TI).
What kind of company: TI is a global American semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing integrated circuits and related products.

Application

TPS3809I50QDBVRQ1 is a 1.50 V supply-voltage supervisor with reset output. Applications include:
- Monitoring a 1.5 V rail to generate reset during power-up/down or brownouts
- Battery-powered/portable devices (IoT sensors, wearables)
- Microcontrollers/SoCs using 1.5 V logic
- Automotive electronics with a 1.5 V rail (AEC-Q100 qualified)
- Safe power-on reset for memories and peripherals

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