Texas Instruments TPS3808G01MDBVTEP

Overview

TPS3808G01MDBVTEP from Texas Instruments is an extended-temperature, low-quiescent-current supervisory circuit with adjustable reset delay and user-programmable threshold voltage down to 0.405 V. It features 0.5% typical threshold accuracy (for V_IT ≤ 3.3 V), 2.4 μA typical supply current, and operates across –55°C to +125°C. It asserts an open-drain RESET signal when SENSE falls below V_IT or MR is pulled low-used in FPGA power sequencing, DSP voltage monitoring, and battery-powered industrial controllers.

For engineers reviewing the TPS3808G01MDBVTEP datasheet, TPS3808G01MDBVTEP pinout, TPS3808G01MDBVTEP application, or TPS3808G01MDBVTEP equivalent, key selection criteria include its programmable 1.25 ms–10 s delay via external capacitor, ±0.5% V_IT accuracy at low thresholds, SOT-23-6 package compatibility, and guaranteed operation over military-grade temperature range.

Technical Context

The TPS3808G01MDBVTEP implements a precision bandgap reference and comparator with built-in hysteresis (V_HYS = 0.5%–3.0% of V_IT) to prevent false resets during voltage transients. Its internal 220 nA CT charging current source enables accurate, temperature-stable delay timing independent of V_DD fluctuations.

It supports three delay configurations: open CT (20 ms), CT-to-V_DD via 40–200 kΩ resistor (300 ms), or CT-to-GND capacitor (1.25 ms–10 s). The SENSE input accepts voltages from 0.405 V upward using an external resistor divider, while MR provides logic-controlled reset initiation with 90 kΩ internal pullup.

Key Specifications

Pinout & Package

SOT-23-6 (DBV) package, 2.90 mm × 1.60 mm body size, 1.45 mm max height, JEDEC-compliant footprint with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supervisory circuit applications.

Compared with TPS3808G33MDBVREP, the TPS3808G01MDBVTEP trades fixed-threshold simplicity for full voltage programmability below 1 V; versus MAX6369ESA+, it delivers superior package density, wider voltage range, and finer delay resolution at marginally higher I_DD.

Availability

TPS3808G01MDBVTEP is available at Aetrix Electronics and suitable for FPGA power sequencing, DSP core voltage monitoring, and battery-powered telemetry nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS3808G01MDBVTEP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 50 years of innovation in power management, signal chain, and high-reliability components.

The TPS3808-EP product line was designed specifically for aerospace, defense, and industrial applications demanding extended-temperature operation, enhanced manufacturing pedigree, and long-term supply assurance under MIL-PRF-38535 Class V conditions.

FAQ

What is the minimum detectable voltage threshold for TPS3808G01MDBVTEP?

The TPS3808G01MDBVTEP supports a minimum threshold of 0.405 V when configured with an external resistor divider on the SENSE pin. This is achieved using the internal 0.405 V reference; the actual monitored voltage equals (1 + R1/R2) × 0.405 V, enabling precise supervision of sub-1 V rails like 0.8 V FPGA cores or 0.9 V DSP supplies.

How does the CT pin configure reset delay in TPS3808G01MDBVTEP?

The CT pin on TPS3808G01MDBVTEP controls reset delay via three configurations: open-circuit yields 20 ms, connection to V_DD through a 40–200 kΩ resistor yields 300 ms, and connection to GND via a ≥100 pF capacitor enables user-programmable delay from 1.25 ms to 10 s. An internal 220 nA current source charges the capacitor to 1.23 V to determine deassertion timing.

Does TPS3808G01MDBVTEP support operation above 125°C junction temperature?

No. The TPS3808G01MDBVTEP is fully specified and qualified for operation from –55°C to +125°C junction temperature. Absolute maximum ratings permit short-term exposure up to +150°C, but functional performance-including threshold accuracy, delay timing, and quiescent current-is only guaranteed within the –55°C to +125°C range per JEDEC extended-temperature qualification.

What is the recommended pullup resistor value for the RESET pin of TPS3808G01MDBVTEP?

A pullup resistor between 10 kΩ and 1 MΩ is recommended for the open-drain RESET pin of TPS3808G01MDBVTEP. Lower values improve rise time but increase static current; higher values minimize current draw but may slow edge transitions. For 3.3 V systems with 100 pF load, 100 kΩ provides optimal balance of speed and power efficiency.

Can TPS3808G01MDBVTEP monitor multiple voltage rails simultaneously?

TPS3808G01MDBVTEP monitors one rail per device via its SENSE pin. To supervise multiple rails, multiple TPS3808G01MDBVTEP units can be used in parallel, or the MR pin can be driven by the RESET output of another supervisor-enabling cascaded or OR'd reset generation. The datasheet shows MR-driven multi-rail monitoring using external logic or FETs.