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TPS3838E18DBVR

Name: TPS3838E18DBVR
Rating: 4.7 (12 reviews)

IC SUPERVISOR 1 CHANNEL SOT23-5

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製造商。部分 #TPS3838E18DBVR
包 SOT-23 (DBV)-5
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規格

Package	Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus	Active
Type	Simple Reset/Power-On Reset
NumberofVoltagesMonitored	1
Voltage-Threshold	1.71V
Output	Open Drain or Open Collector
Reset	Active Low
ResetTimeout	10ms Minimum
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	SC-74A, SOT-753

概述

Description

TPS3838E18DBVR is TI’s fixed-threshold voltage supervisor (reset IC) for microcontrollers. It monitors a 1.8 V rail and asserts a reset signal (RESET#) when VDD falls below about 1.8 V or during power-up/power-down, ensuring a clean MCU startup. The E18 suffix indicates the 1.8 V threshold; DBV denotes the SOT-23-3 package, with R indicating tape-and-reel packaging.
Key features (typical): deterministic power-on reset with an internal delay, very low quiescent current, and an active-low reset output. No external components are required for basic operation.
Applications: any MCU/SoC design powered from a 1.8 V rail—embedded controllers, battery-powered devices, portable electronics, and other systems requiring reliable reset on supply fluctuations.
Usage basics: connect VDD to the 1.8 V supply, connect GND to ground, and drive the MCU reset input from the RESET# output. Refer to the datasheet for exact timing, drive capability, and package-specific details.

Features

Here are the key features of TPS3838E18DBVR (1.8 V fixed-threshold supervisor):
- Fixed 1.8-V voltage monitor for Vcc supervision
- Reset output: active-low, push-pull
- Ultra-low quiescent current (typical microamp range)
- Fast power-on reset with internal debounce/hysteresis to prevent glitches
- Small 3-pin package: DBV (SOT-23 style) for compact designs
- Wide operating temperature: -40°C to 125°C
- No external components required (POR timing internal)
- RoHS-compliant, tape-and-reel packaging (DBVR)
Note: For exact electrical specs (threshold tolerance, reset delay, and current), refer to the TI datasheet.

Package

TPS3838E18DBVR comes in a 5‑pin SOT‑23 package (package code DBV). The trailing “R” indicates tape-and-reel packaging.

Pinout

- Pin count: 8 pins in a VSSOP-8 package (DBVR code).
- Function: 1.8 V voltage supervisor/reset IC. It monitors the 1.8 V rail and provides an active-low reset output to a microcontroller, typically with power-on/brown-out reset behavior and no external components required.

Manufacturer

- Manufacturer: Texas Instruments Incorporated (TI).
- Company type: American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits.

Application

TPS3838E18DBVR is a 1.8V voltage supervisor (reset generator). Typical application areas:
- 1.8V rail monitoring for microcontrollers, MPU/FPGA/SoC, and memory
- Power-on/brown-out reset for 1.8V digital systems in consumer, networking, and data-storage equipment
- Battery-powered/portable devices (wearables, handhelds) needing reliable 1.8V reset
- General 1.8V logic reset in telecom/industrial equipment requiring proper startup sequencing and glitch-free resets

Equivalent

Equivalents (1.8 V reset supervisors):
- TI TLV803B1.8
- Microchip MCP1316-1.8 (and MCP1315/1318 variants)
- Maxim MAX809/MAX810 (1.8 V variants)
- Analog Devices ADM803/ADM804‑1.8
Note: choose by package, current limit, and reset timing as needed.