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TPS3840DL31DBVR

Name: TPS3840DL31DBVR
Rating: 4.7 (12 reviews)

IC SUPERVISOR 1 CHANNEL SOT23-5

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製造商。部分 #TPS3840DL31DBVR
包 SOT-23 (DBV)-5
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	Simple Reset/Power-On Reset
NumberofVoltagesMonitored	1
Voltage-Threshold	3.1V
Output	Open Drain or Open Collector
Reset	Active Low
ResetTimeout	619ms Typical
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	SC-74A, SOT-753

概述

Description

TPS3840DL31DBVR is a fixed-threshold voltage supervisor (power-on/brown-out reset) from Texas Instruments. It continuously monitors VDD and asserts an active-low reset to a microcontroller or digital IC when the supply falls below a 3.1 V threshold (DL31 variant). On power-up, it delivers a clean, deterministic reset once VDD stabilizes, helping ensure proper MCU initialization. The device combines fast response, glitch rejection, and low quiescent current, supporting 2.7–5.5 V systems. It comes in TI’s compact DBVR package (DL31 denotes the 3.1 V threshold). Typical uses include reset generation for MCUs/SoCs, brown-out protection in embedded and consumer electronics, and other digital systems requiring reliable reset timing.

Features

TPS3840DL31DBVR features (concise):
- Ultra-low-power voltage supervisor for microprocessors
- Supply range: 1.8 V to 5.5 V
- Fixed-threshold variant (DL31) with built-in reset threshold and hysteresis
- Active-low reset output (RESET#) with fast response
- Manual reset input for external forcing of reset
- Power-on reset guaranteed as Vcc rises and settles
- Very low quiescent current in normal operation
- Wide operating temperature range (-40°C to 125°C)
- Small package (DBVR) suitable for space-constrained designs

Package

8-pin VSSOP (Very Small Outline Package) in the DBV family; DBVR indicates the tape-and-reel version.

Pinout

- Pin count: 5 pins
- Function: TPS3840DL31DBVR is a voltage supervisor (reset generator) with a 3.1 V threshold. It monitors Vcc and asserts an active-low reset output to a microcontroller when the supply falls below threshold; includes an optional manual reset input.

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: TI is an American multinational semiconductor company that designs and manufactures a broad range of analog and mixed-signal integrated circuits, embedded processors, microcontrollers, and related components used in electronics worldwide.

Application

TPS3840DL31DBVR is a voltage supervisor/reset generator. Applications:
- Microcontroller/microprocessor reset supervision with brown-out protection
- Power-on reset and safe power-down for digital systems
- Reset generation for FPGAs, ASICs, memory, DSPs
- Battery-powered/portable devices needing low quiescent current
- Multi-supply systems and power sequencing
- Automotive/industrial/consumer electronics requiring reliable reset

Equivalent

Equivalent parts depend on the exact requirements (threshold, reset delay, active level, package). For a 3.1‑V reset supervisor like TPS3840DL31DBVR, common alternatives include:
- Maxim MAX809/MAX810
- Microchip MCP1316A/MCP1317
- ON Semiconductor NCV/NCS family
- Renesas/Intersil ISL9x2x ISL9x/ISL92xx
- STMicroelectronics 3.0–3.3 V supervisor variants
Note: verify threshold, timing, output type, and package; use a cross-reference tool for pin-compatible replacements.