Texas Instruments HPA00489DRVR

Overview

HPA00489DRVR from Texas Instruments is a low-quiescent-current, programmable-delay supervisory circuit designed to monitor system supply voltages (0.4 V to 5 V) and assert an open-drain RESET signal upon undervoltage or manual reset assertion. It delivers 0.5% threshold accuracy (≤3.3 V), 2.4 μA typical quiescent current, and user-adjustable delay from 1.25 ms to 10 s - enabling reliable power-on reset in battery-powered microcontroller and FPGA systems.

For engineers reviewing the HPA00489DRVR datasheet, HPA00489DRVR pinout, HPA00489DRVR application, or HPA00489DRVR equivalent, this page provides verified package mapping (DRV 6-pin WSON), confirmed SENSE/RESET/MR/CT functionality, thermal performance data (RθJA = 178.1°C/W), and real-world timing behavior across –40°C to 125°C operation.

Technical Context

The HPA00489DRVR implements a precision voltage comparator with built-in hysteresis (1–3% VIT) and an on-chip 220-nA current source that charges an external CT capacitor to generate the reset delay. Its SENSE input monitors rail voltage directly or via resistor divider (for adjustable thresholds ≥0.405 V), while MR supports logic-level reset initiation with internal 90-kΩ pull-up.

RESET deassertion requires both SENSE > VIT + VHYS and MR high, followed by full CT charge to 1.23 V. The open-drain output supports pull-up to voltages up to 6.5 V, independent of VDD, and tolerates transients based on overdrive margin per Figure 7-5 - critical for noisy DC-DC converter outputs.

Key Specifications

Pinout & Package

HPA00489DRVR is packaged in a 6-pin, 2.00 mm × 2.00 mm WSON (DRV) package with exposed thermal pad. This thermally enhanced package achieves RθJA = 178.1°C/W and requires PCB connection of the thermal pad to ground plane for optimal reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HPA00489DRVR, TPS3808G33DBVR trades adjustability and thermal performance for smaller footprint and lower cost in fixed-rail applications, while MAX6326UT29D3+ offers lower IQ but sacrifices design flexibility in reset control and timing configuration.

Availability

HPA00489DRVR is available at Aetrix Electronics and suitable for industrial PLCs, battery-powered edge nodes, FPGA configuration systems, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HPA00489DRVR 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 delivering analog and embedded processing solutions, with leadership in power management, signal chain, and microcontrollers.

The TPS3808 product line was developed specifically for high-accuracy, low-power system supervision in space-constrained and thermally demanding applications - including portable computing, industrial automation, and automotive electronics.

FAQ

What is the exact package type and dimensions of HPA00489DRVR?

HPA00489DRVR uses the DRV package: a 6-pin, 2.00 mm × 2.00 mm WSON with exposed thermal pad. Its body size is 2.00 mm × 2.00 mm × 0.75 mm, and it requires soldering the thermal pad to a PCB ground plane for thermal compliance. This differs from the SOT-23 variant (DBV) which measures 2.90 mm × 1.60 mm.

Does HPA00489DRVR support monitoring sub-1-V rails like 0.8-V CPU cores?

Yes, HPA00489DRVR supports monitoring rails down to 0.405 V using the adjustable-threshold TPS3808G01 variant with an external resistor divider on the SENSE pin. The device's ±25 nA input bias and 0.5% threshold accuracy ensure minimal error in high-ratio dividers required for sub-1-V core voltage supervision.

How is the reset delay time configured on HPA00489DRVR?

HPA00489DRVR configures reset delay via the CT pin: leaving CT open yields 20 ms; connecting CT to VDD through a 40–200 kΩ resistor gives 300 ms; connecting CT to GND via a ≥100 pF capacitor enables user-programmable delays from 1.25 ms to 10 s. The delay is determined by charging the capacitor with an internal 220-nA current source.

Can HPA00489DRVR drive a reset line referenced to a voltage higher than its own VDD?

Yes, HPA00489DRVR's open-drain RESET output supports pull-up to voltages up to 6.5 V - independent of its VDD supply. This allows interfacing with processors or FPGAs operating at higher I/O voltages (e.g., 5-V tolerant reset inputs) without level-shifters, provided the pull-up resistor is ≥10 kΩ.

What is the minimum recommended pull-up resistor value for the RESET pin of HPA00489DRVR?

The minimum recommended pull-up resistor for the RESET pin of HPA00489DRVR is 10 kΩ. Lower values increase current draw during RESET assertion and may exceed the 5-mA absolute maximum sink rating. A 100-kΩ pull-up is commonly used to balance speed, power, and noise immunity in most microcontroller interfaces.