TPS3840PL45DBVR

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TPS3840PL45DBVR

IC SUPERVISOR 1 CHANNEL SOT23-5

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  • Fr. Teil #TPS3840PL45DBVR
  • Paket SOT-23 (DBV)-5
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Spezifikationen

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type Power Supply Monitor
NumberofVoltagesMonitored 1
Voltage-Threshold 4.5V
Output Push-Pull, Totem Pole
Reset Active Low
ResetTimeout 619ms Typical
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case SC-74A, SOT-753

Übersicht

Description

TPS3840PL45DBVR is TI’s fixed-threshold voltage supervisor (reset IC) in the TPS3840 family. It monitors the supply rail and generates a reset signal to guarantee proper MCU/SoC startup and safe operation during brownouts or power-up/down.
Key points:
- Threshold: fixed 4.5 V (PL45 variant) for 5-V rail systems.
- Reset output: active-low reset that stays asserted until Vcc is stable above threshold (ensures reliable reset release).
- Low power: designed for minimal quiescent current in microcontroller applications.
- Packaging: DBV package with RoHS-compliant Tape & Reel (DBVR suffix).
Typical uses:
- Microcontroller and digital logic reset protection on 5-V systems.
- Brown-out protection for embedded systems and standalone devices.
Why use it:
- Simple, reliable, no external components required to generate a proper reset during power issues.
- Small footprint and low power make it suitable for space- and power-constrained designs.

Features

Here are the key features of the TPS3840PL45DBVR:
- Fixed 4.5 V reset threshold (suitable for 5 V rail monitoring) with built-in hysteresis
- Voltage supervisor with a reset output for microcontroller reset signaling
- Manual reset input for external forcing of reset
- Push-pull reset output for strong, fast drive
- Very low quiescent current in normal operation
- Wide operating voltage range (suitable for 5 V and similar rails)
- Extended temperature rating (-40°C to +125°C)
- 8-pin VSSOP package (DBV) with Tape & Reel (DBVR) option
Note: Specifications such as exact current draw, reset pulse width, and tolerance are provided in the TI datasheet for precise design requirements.

Package

SOT-23-5 (SC-70-5) plastic package. Package code: DBV (reel part: -R).

Pinout

- Pin count: 8 pins (VSSOP-8, DBVR package)
- Function: TPS3840PL45DBVR is a voltage supervisor/reset IC with a fixed 4.5 V threshold. It monitors Vcc and generates a reset signal to a microcontroller/system when Vcc falls below the threshold (and/or when a manual reset is asserted).

Manufacturer

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

Application

TPS3840PL45DBVR is a 4.5 V voltage supervisor with a reset output and optional manual reset input. Common applications:
- Microcontroller and digital IC reset supervision on 4.5–5 V rails
- Power-on/reset for MCUs, FPGAs, DSPs
- Brown-out protection in automotive/industrial power rails
- Battery-powered devices with ultra-low quiescent current
- DC‑DC converter monitoring and reset control
- External manual reset control for controlled startup/shutdown

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