Texas Instruments TPS3808G30DRVR

Overview

TPS3808G30DRVR from Texas Instruments is a low-quiescent-current, programmable-delay supervisory circuit designed to monitor 3.0-V system rails and assert an open-drain RESET signal when the SENSE voltage falls below 2.79 V. It delivers 0.5% threshold accuracy, 2.4 μA typical supply current, and user-adjustable reset delay from 1.25 ms to 10 s via external capacitor on CT pin. It is used in battery-powered microcontroller systems requiring precise power-on reset timing.

For engineers reviewing the TPS3808G30DRVR datasheet, TPS3808G30DRVR pinout, TPS3808G30DRVR application, or TPS3808G30DRVR equivalent, key selection considerations include its fixed 2.79-V threshold for 3.0-V rails, SOT-23-6 and WSON-6 package options, –40°C to 125°C operating range, open-drain RESET output with 0.4-V max VOL at 1 mA, and compatibility with manual reset (MR) input and precision timing control via CT pin.

Technical Context

The TPS3808G30DRVR implements a precision bandgap reference and comparator architecture to achieve ±0.5% threshold accuracy for VIT ≤ 3.3 V. Its internal 220-nA current source charges an external CT capacitor to generate reset delay, supporting three configurations: open (20 ms), resistor-to-VDD (300 ms), or capacitor-to-GND (1.25 ms–10 s).

It operates across 1.7 V to 6.5 V supply range with 2.4 μA typical IDD, features built-in hysteresis on the SENSE input, and uses an internal 90-kΩ pull-up on MR. The open-drain RESET output requires an external pull-up resistor (10 kΩ–1 MΩ) and supports voltages up to 6.5 V independent of VDD.

Key Specifications

Pinout & Package

TPS3808G30DRVR is packaged in a 6-pin WSON (DRV) package with 2.00 mm × 2.00 mm body size and exposed thermal pad. This thermally enhanced package supports high-reliability operation in compact, high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3808G30DRVR, TPS3808G33DRVR offers identical architecture but targets 3.3-V rails, while MAX6326UT30D3+T trades programmability and MR support for lower I_DD and smaller size-making it suitable only for fixed-timing, MR-free designs.

Availability

TPS3808G30DRVR is available at Aetrix Electronics and suitable for microcontroller power-on reset, battery-powered portable devices, and industrial control modules requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS3808G30DRVR 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and real-time control ICs.

The TPS3808 family is designed for precision voltage monitoring and programmable reset generation in resource-constrained, battery-sensitive, and high-reliability embedded systems-emphasizing low quiescent current, tight threshold accuracy, and flexible timing control.

FAQ

What is the exact threshold voltage of the TPS3808G30DRVR?

The TPS3808G30DRVR has a nominal threshold voltage (VIT) of 2.79 V, factory-trimmed for monitoring nominal 3.0-V supply rails. This value is specified with ±0.5% accuracy over –40°C to 125°C for VIT ≤ 3.3 V, ensuring consistent undervoltage detection across temperature and process variation. The TPS3808G30DRVR does not support adjustable thresholds-the 2.79-V setting is fixed per device variant.

How is the reset delay programmed on the TPS3808G30DRVR?

The TPS3808G30DRVR reset delay is programmed via the CT pin: leaving CT open yields a fixed 20-ms delay; connecting CT to VDD through a 40–200-kΩ resistor sets 300 ms; connecting CT to GND through a ≥100-pF capacitor enables user-adjustable delay from 1.25 ms to 10 s. The TPS3808G30DRVR uses an internal 220-nA current source to charge the capacitor, and delay time is calculated as t_D = C_T(nF) × 10⁻³ + 0.5 ms.

Does the TPS3808G30DRVR support manual reset functionality?

Yes, the TPS3808G30DRVR includes a dedicated MR (manual reset) input pin that asserts RESET when driven logic-low. The MR pin features an internal 90-kΩ pull-up to VDD, allowing it to be left unconnected if unused. When active, MR overrides SENSE input status, forcing RESET assertion regardless of monitored rail voltage-enabling system-level reset initiation by processors or push-button circuits.

What package options are available for the TPS3808G30DRVR?

The TPS3808G30DRVR is offered exclusively in the 6-pin WSON (DRV) package with 2.00 mm × 2.00 mm body size and exposed thermal pad. Unlike other TPS3808 variants, the DRVR suffix denotes this specific WSON-6 variant; the SOT-23-6 (DBVR) option exists for other members (e.g., TPS3808G30DBVR) but is not assigned to the DRVR part number. The DRV package provides superior thermal performance with R_θJB = 135°C/W.

Can the TPS3808G30DRVR monitor supply voltages below 3.0 V?

No-the TPS3808G30DRVR is factory-configured for a fixed 2.79-V threshold optimized for nominal 3.0-V rails. It cannot monitor voltages below this threshold unless used with an external resistor divider on the SENSE pin, which would require a different variant (e.g., TPS3808G01) for sub-0.4-V capability. Attempting to monitor <2.79 V directly will result in immediate, continuous RESET assertion.