Texas Instruments TPS3808G01DRVRG4

Overview

TPS3808G01DRVRG4 from Texas Instruments is a low-quiescent-current, adjustable-threshold supervisory circuit that monitors system supply voltages down to 0.405 V and asserts an open-drain RESET signal upon undervoltage or manual reset assertion. It delivers 0.5% threshold accuracy (≤3.3 V), 2.4 μA typical supply current, and user-programmable 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 TPS3808G01DRVRG4 datasheet, TPS3808G01DRVRG4 pinout, TPS3808G01DRVRG4 application, or TPS3808G01DRVRG4 equivalent, key selection considerations include its adjustable 0.405 V threshold, SOT-23-6/WSON-6 package options, –40°C to 125°C operation, open-drain RESET output with 0.4 V max VOL at 1 mA, and MR input with 90 kΩ internal pull-up.

Technical Context

The TPS3808G01DRVRG4 implements a precision voltage comparator with built-in hysteresis (1.5–3% of VIT) and an on-chip 220 nA current source for programmable reset timing. Its SENSE input accepts any monitored rail ≥0.405 V via external resistor divider, while the CT pin supports three delay modes: open (20 ms), VDD-connected (300 ms), or capacitor-grounded (1.25 ms–10 s).

It operates across 1.7–6.5 V supply range and features a manual reset (MR) input with 0.3 VDD logic-low threshold and 0.7 VDD logic-high threshold, internally pulled up to VDD via 90 kΩ. The open-drain RESET output requires an external pull-up (10 kΩ–1 MΩ) and supports voltage levels up to 6.5 V independent of VDD.

Key Specifications

Pinout & Package

TPS3808G01DRVRG4 is packaged in a 6-pin WSON (DRV) package measuring 2.00 mm × 2.00 mm with exposed thermal pad. This compact, thermally enhanced package supports high-density PCB layouts and improved power dissipation in space-constrained applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3808G01DBVR, the TPS3808G01DRVRG4 offers superior thermal management and higher power density; compared with MAX6326UT29D3+, it provides full adjustability of both threshold and delay-critical for multi-rail, battery-optimized, or safety-critical designs.

Availability

TPS3808G01DRVRG4 is available at Aetrix Electronics and suitable for battery-powered sensors, industrial PLC modules, FPGA configuration systems, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS3808G01DRVRG4 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 specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in high-reliability electronic components.

The TPS3808 family is designed for precision power-supply monitoring in resource-constrained, low-power, and high-temperature applications-including portable computing, industrial automation, and automotive subsystems-where accurate voltage supervision and minimal current draw are essential.

FAQ

What is the exact threshold voltage of TPS3808G01DRVRG4?

The TPS3808G01DRVRG4 has a factory-trimmed threshold voltage of 0.405 V, enabling direct supervision of ultra-low-voltage rails or use with external resistor dividers to monitor any supply from 0.4 V to 5 V. This value is specified with ±1% typical accuracy for VIT ≤ 3.3 V across –40°C to 125°C junction temperature.

How do I configure the reset delay time for TPS3808G01DRVRG4?

To configure the reset delay for TPS3808G01DRVRG4, connect the CT pin: leave it open for 20 ms, tie it to VDD via a 40–200 kΩ resistor for 300 ms, or connect a ≥100 pF capacitor from CT to GND for user-adjustable delay (1.25 ms to 10 s). The delay is determined by charging this capacitor with an internal 220 nA current source.

Does TPS3808G01DRVRG4 support manual reset functionality?

Yes, TPS3808G01DRVRG4 includes a dedicated MR (manual reset) input pin with 0.3 VDD logic-low threshold. Driving MR low asserts RESET immediately, regardless of SENSE voltage. MR is internally pulled up to VDD with a 90 kΩ resistor, so it may be left unconnected if not used-reducing external component count.

What package type is used for TPS3808G01DRVRG4?

TPS3808G01DRVRG4 uses the DRV package: a 6-pin WSON (2.00 mm × 2.00 mm) with exposed thermal pad. This package provides superior thermal performance versus SOT-23 alternatives and supports high-density PCB layouts in space-constrained applications like wearables and modular I/O systems.

Can TPS3808G01DRVRG4 monitor a 1.0 V supply rail?

Yes, TPS3808G01DRVRG4 can monitor a 1.0 V rail by connecting it to the SENSE pin through a resistor divider that scales the rail down to 0.405 V. For example, using R1 = 1.37 MΩ and R2 = 1 MΩ yields V_SENSE = 1.0 V × (1 MΩ / (1.37 MΩ + 1 MΩ)) ≈ 0.405 V. The device's low SENSE input current (<25 nA) ensures minimal divider error.