Texas Instruments TPS3809I50MDBVREP

Mfr. Part

TPS3809I50MDBVREP

Manufacturer

Luminary Micro/Texas Instruments. Y-IC is a quality distributor for Texas Instruments and we will provide you with the best genuine products and professional services.

Detailed Description

Single-channel voltage supervisor/reset IC for 5 V systems. Active-low reset with push-pull (totem-pole) output. Monitors one voltage with a 4.55 V threshold and a minimum 120 ms reset delay. Tiny SOT-23-3 package for space-constrained designs. Enhanced Product (EP/REP) grade for robust reliability and extended temperature operation from -55°C to +125°C. RoHS3 compliant. Mounting is surface-mount. Supplied in Tape & Reel. Base product family TPS3809. Available quantity 3400.

Key Features

Monitors 1 supply rail (optimized for 5 V systems)

Precision threshold 4.55 V (typ) with built-in hysteresis for noise immunity

Reset output active low, push-pull/totem-pole for fast, clean logic-level drive

Reset timeout 120 ms minimum for stable system startup

Simple power-on reset function, no external timing components required

Wide operating temperature range -55°C to +125°C (TA) for harsh environments

Low supply current (typical in the tens of microamps) for efficient operation

Small SOT-23-3 footprint saves PCB space

Surface-mount, JEDEC-standard package for automated assembly

RoHS3 compliant materials and processes

Enhanced Product (REP) flow for controlled baseline, extended longevity, and reliability screening

Key Advantages

Improves system reliability by guaranteeing reset during undervoltage and slow ramp conditions

Push-pull output directly drives logic without pull-up resistors, simplifying design

Deterministic reset delay reduces false starts and boot glitches

Extended temperature capability makes it suitable for automotive, industrial, and outdoor equipment

Tiny package minimizes BOM size and PCB area

Low quiescent current extends battery life in portable and standby systems

TI Enhanced Product line helps ensure long-term availability and consistent performance

Packaging

Type: SOT-23-3 (also known as TO-236-3, SC-59, DBV)

Material: Molded epoxy package with plated copper leads, lead-free (RoHS3)

Size: Approx. 2.9 mm x 1.6 mm x 1.1 mm (L x W x H); lead pitch ~0.95 mm

Pin configuration (typical DBV pinout, verify in datasheet):

- Pin 1 RESET (active low, push-pull output)

- Pin 2 GND

- Pin 3 VDD (monitored supply)

Thermal characteristics (typical, board-dependent):

- RθJA ~ 200–210 °C/W on standard JEDEC test board

- RθJC(b) typically tens of °C/W; actual values depend on layout and copper area

Electrical properties (key parameters):

- Monitored threshold 4.55 V typ (5 V rail supervisor) with internal hysteresis

- Reset timeout 120 ms min (fixed internal delay)

- Output type push-pull/totem-pole, logic-compatible

- Operating temperature -55°C to +125°C (TA)

- Supply current typically ~10–20 µA

- Suitable for slow ramp rates and noisy supplies

Supplier Device Package: SOT-23-3

Shipment form: Tape & Reel (TR) for automated pick-and-place

Lifecycle

Status: Active and not nearing discontinuation based on TI Enhanced Product (REP) controlled baseline and long-term support philosophy

Recommended equivalents and alternatives (verify threshold, pinout, and timing for your design):

- Texas Instruments TPS3809I50DBV (standard grade, same family and function)

- Texas Instruments TLV803E50DBZR (5 V supervisor, SOT-23, active-low output)

- Texas Instruments TPS3836K50DBVR (5 V supervisor with manual reset options)

- Texas Instruments TPS3895 or TPS3897 families (newer supervisors with enhanced features; check thresholds and packages)

- Same-family variants for other rails if needed:

- TPS3809K33 (3.3 V systems)

- TPS3809J25 (2.5 V systems)

- Cross-brand examples for reference (confirm exact specs):

- Microchip MCP809/MCP811 series (SOT-23 voltage supervisors)

- ON Semiconductor NCP302/NCP306 series

If you need a drop-in alternative or a specific threshold/version not listed, please contact our sales team via the Y-IC website for a tailored recommendation.

Key Application Areas

Industrial controllers, PLCs, factory automation

Automotive ECUs, infotainment, ADAS support electronics

Telecom and networking equipment

Embedded systems, MCU/MPU reset supervision

Servers, storage, and enterprise power rails

Power supplies, DC/DC converters, and battery-powered devices

IoT nodes, sensors, and instrumentation

Motor control and robotics

Medical and lab equipment (non-life-support)

Datasheet

Y-IC provides the most authoritative and up-to-date datasheet for TPS3809I50MDBVREP on our product page. We recommend downloading it here to get exact electrical limits, pinout diagrams, and application guidance.

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