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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Texas Instruments TPS389001QDSERQ1

Name: TPS389001QDSERQ1
Brand: Texas Instruments
SKU: TPS389001QDSERQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS389001QDSERQ1

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: 6-WFDFN

Datasheet:: TPS389001QDSERQ1.pdf

Description:: IC SUPERVISOR 1 CHANNEL 6WSON

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Product details

Overview

TPS389001QDSERQ1 from Texas Instruments is an automotive-grade precision voltage supervisor IC that monitors system rails as low as 1.15 V using an external resistor divider, asserts an open-drain RESET signal on undervoltage or manual reset, and provides user-adjustable delay (25 μs to 30 s) via the CT pin capacitor. It delivers 1% threshold accuracy, 2.1 μA quiescent current, and operates across –40°C to +125°C ambient for infotainment and ADAS power sequencing.

For engineers reviewing the TPS389001QDSERQ1 datasheet, TPS389001QDSERQ1 pinout, TPS389001QDSERQ1 application, or TPS389001QDSERQ1 equivalent, key selection criteria include adjustable threshold configuration, CT-based delay tuning, AEC-Q100 Grade 1 qualification, open-drain RESET compatibility with 5.5 V pull-up, and low-leakage SENSE input supporting <100 nA bias at 5 V.

Technical Context

The TPS389001QDSERQ1 implements a precision bandgap reference and comparator architecture with built-in hysteresis (0.325–0.825%) to ensure clean RESET assertion/deassertion during rail transitions. Its SENSE input accepts voltages up to 5.5 V independent of VDD (1.5–5.5 V), enabling monitoring of higher-voltage rails with external dividers.

Reset timing is governed by a 1.15 µA CT pin charging current and 1.23 V internal comparator threshold, yielding t_PD(r) = C_CT × 1.07 + 25 µs (nominal). The device supports glitch immunity ≥9 µs on SENSE and ≥100 ns on MR, with propagation delays as low as 8 µs (VDD = 5.5 V, falling edge).

Key Specifications

Parameter	Value and Actual Design Meaning
Threshold Accuracy	±1% max over –40°C to +125°C - ensures reliable reset assertion without margin inflation in safety-critical automotive rails.
Quiescent Current	2.1 µA typical at VDD = 3.3 V - enables battery-backed systems and always-on monitoring without significant leakage impact.
Adjustable Delay Range	25 µs to 30 s via CT capacitor - supports microcontroller startup timing (e.g., Delfino XRS ≥1 ms) and complex power sequencing.
SENSE Input Range	0 V to 5.5 V - allows direct monitoring of 1.2–5.0 V rails or scaled monitoring of higher rails using external resistors.
RESET Output Type	Open-drain, 5.5 V tolerant - permits level-shifting pull-up to any compatible logic rail (e.g., 1.8 V, 3.3 V, or 5 V) independent of VDD.
Operating Temperature	–40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and infotainment applications.
Hysteresis	0.325–0.825% - prevents chatter during slow-rising/falling supply edges and improves noise immunity on noisy PCB traces.

Pinout & Package

TPS389001QDSERQ1 is housed in a 1.5-mm × 1.5-mm WSON-6 package with wettable flanks, optimized for automated optical inspection and space-constrained automotive modules.

Pin/Terminal	Circuit Role	Design Meaning
1 - SENSE	Monitor input	High-impedance node accepting 0–5.5 V; connects to resistor divider for adjustable threshold (e.g., 1.15 V min); bias current ≤100 nA avoids divider error.
2 - GND	Reference ground	Analog and digital return path; must be low-impedance and separated from noisy power grounds to preserve threshold accuracy.
3 - MR	Manual reset input	Active-low asynchronous reset trigger; accepts logic levels down to 0.25×VDD; glitch immunity ≥100 ns prevents spurious resets.
4 - VDD	Supply input	1.5–5.5 V main power; requires local 0.1-µF ceramic decoupling; UVLO holds RESET low below VPOR = 0.8 V.
5 - CT	Delay timing terminal	Connects to ground-referenced capacitor; 1.15 µA charging current sets delay; low-leakage ceramic cap recommended to avoid drift.
6 - RESET	Open-drain output	Asserts low on fault or MR; deasserts after CT delay; requires external pull-up (10 kΩ–1 MΩ) to target logic rail voltage.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for –40°C to +125°C ambient operation, HBM ±2 kV, CDM ±750 V - suitable for front-end ADAS camera and gateway ECUs.
Adjustable threshold architecture	Supports monitoring of any rail ≥1.15 V via external R1/R2 divider; enables single BOM part across multiple voltage domains.
Precision hysteresis control	0.325–0.825% hysteresis minimizes false triggering on ripple or slow ramping supplies - critical for low-noise MCU core sequencing.
Low-glitch SENSE input	≥9 µs glitch immunity at 5% overdrive - rejects EMI-induced transients without requiring additional RC filtering in compact layouts.
CT-based delay scalability	25 µs to 30 s range covers both fast microcontroller reset (e.g., 100 µs) and extended brownout hold-off (e.g., 10 s for EEPROM write completion).

Applications

Infotainment Head Unit	ADAS Camera Module
Use Scenario: Monitors 1.2 V VCORE and 3.3 V I/O rails during cold crank and load dump events in automotive head units. IC Role / Device Role / Timing Role: Supervisor IC asserting RESET to SoC when VCORE drops below 1.15 V; delay set to 20 ms to accommodate transient recovery. Use Value: Prevents firmware corruption during unstable battery conditions by enforcing minimum valid supply time before SoC release.	Use Scenario: Ensures clean power-up sequence for image sensor and ISP in rear-view camera ECU exposed to engine bay thermal stress. IC Role / Device Role / Timing Role: Adjustable-threshold supervisor monitoring 1.8 V sensor rail; CT capacitor sets 5 ms delay to match sensor initialization timing. Use Value: Eliminates need for separate fixed-threshold parts per rail, reducing BOM count and layout area in thermally constrained modules.
Hybrid/Digital Cluster	Automotive Gateway
Use Scenario: Validates 5.0 V display backlight supply and 1.5 V microcontroller core rail in digital instrument clusters with dual-domain power management. IC Role / Device Role / Timing Role: Configured as adjustable supervisor for 5.0 V rail using R1/R2; MR tied to cluster MCU for coordinated reset initiation. Use Value: Enables synchronized reset across display and control subsystems without dedicated reset controller IC.	Use Scenario: Supervises 3.3 V CAN transceiver and 1.2 V microcontroller rails in multi-protocol vehicle gateway managing CAN, LIN, and Ethernet. IC Role / Device Role / Timing Role: Dual-rail monitoring via shared SENSE divider and MR-triggered reset; CT delay set to 100 ms for full network stack initialization. Use Value: Guarantees deterministic boot order across heterogeneous communication interfaces, preventing bus arbitration failures.

Infotainment Head Unit

ADAS Camera Module

Use Scenario: Monitors 1.2 V VCORE and 3.3 V I/O rails during cold crank and load dump events in automotive head units.

IC Role / Device Role / Timing Role: Supervisor IC asserting RESET to SoC when VCORE drops below 1.15 V; delay set to 20 ms to accommodate transient recovery.

Use Value: Prevents firmware corruption during unstable battery conditions by enforcing minimum valid supply time before SoC release.

Use Scenario: Ensures clean power-up sequence for image sensor and ISP in rear-view camera ECU exposed to engine bay thermal stress.

IC Role / Device Role / Timing Role: Adjustable-threshold supervisor monitoring 1.8 V sensor rail; CT capacitor sets 5 ms delay to match sensor initialization timing.

Use Value: Eliminates need for separate fixed-threshold parts per rail, reducing BOM count and layout area in thermally constrained modules.

Hybrid/Digital Cluster

Automotive Gateway

Use Scenario: Validates 5.0 V display backlight supply and 1.5 V microcontroller core rail in digital instrument clusters with dual-domain power management.

IC Role / Device Role / Timing Role: Configured as adjustable supervisor for 5.0 V rail using R1/R2; MR tied to cluster MCU for coordinated reset initiation.

Use Value: Enables synchronized reset across display and control subsystems without dedicated reset controller IC.

Use Scenario: Supervises 3.3 V CAN transceiver and 1.2 V microcontroller rails in multi-protocol vehicle gateway managing CAN, LIN, and Ethernet.

IC Role / Device Role / Timing Role: Dual-rail monitoring via shared SENSE divider and MR-triggered reset; CT delay set to 100 ms for full network stack initialization.

Use Value: Guarantees deterministic boot order across heterogeneous communication interfaces, preventing bus arbitration failures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS389012QDSERQ1	Fixed 1.2 V threshold; no external resistor divider required; identical package, pinout, and CT delay capability.	Used where 1.2 V rail monitoring is primary; eliminates two external resistors but lacks flexibility for other voltages.	Select when only 1.2 V supervision is needed and board space for divider resistors is constrained.
TLV809EYZTR	Fixed 3.08 V threshold; 1.8 µA IQ; no CT programmability; SOT-23-3 package; no MR input.	Limited to single fixed rail; no manual reset or delay adjustment; smaller footprint but less functional coverage.	Choose for cost-sensitive, single-rail applications where delay tuning and MR are unnecessary.

Compared with TPS389012QDSERQ1, the TPS389001QDSERQ1 trades fixed-threshold simplicity for design flexibility across multiple rails; compared with TLV809EYZTR, it adds MR control, programmable delay, and adjustable threshold at the cost of larger package and higher component count.

Availability

TPS389001QDSERQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and digital cluster designs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for TPS389001QDSERQ1 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 automotive, industrial, and power management solutions.

The TPS3890-Q1 product line delivers ultra-low-power, high-accuracy voltage supervision for automotive electronics, designed specifically to meet stringent AEC-Q100 reliability and thermal requirements in safety-critical systems.

FAQ

What is the minimum monitored voltage supported by the TPS389001QDSERQ1?

The TPS389001QDSERQ1 supports monitoring of rails as low as 1.15 V when configured with an external resistor divider on the SENSE pin. Its internal negative threshold (VITN) is factory-trimmed to 1.15 V, and the adjustable architecture allows scaling to lower effective thresholds via R1/R2 ratio selection - verified across –40°C to +125°C with ±1% accuracy.

How is the reset delay time calculated for the TPS389001QDSERQ1?

The rising-edge reset delay (t_PD(r)) for TPS389001QDSERQ1 is calculated as t_PD(r) = C_CT × 1.07 + 25 µs (nominal), where C_CT is the capacitance (in µF) connected between CT and GND. This formula derives from the 1.15 µA CT charging current and 1.23 V internal comparator threshold - validated in TI's SBVS303B datasheet Figure 12 and Section 8.3.1.

Can the TPS389001QDSERQ1 monitor a 5.0 V rail directly?

No - the TPS389001QDSERQ1 SENSE pin accepts up to 5.5 V, but its internal threshold is fixed at 1.15 V. To monitor a 5.0 V rail, an external resistor divider must scale the rail down to ~1.15 V at SENSE. For example, R1 = 330 kΩ and R2 = 100 kΩ yields V_SENSE = 5.0 V × 100/(330+100) ≈ 1.16 V, satisfying the 1.15 V threshold with margin.

What is the maximum allowable CT capacitor value for the TPS389001QDSERQ1?

The maximum CT capacitor value for TPS389001QDSERQ1 is 26 µF, which yields the maximum specified reset delay of 30 seconds. This limit is defined in the Recommended Operating Conditions table (Section 7.3) and confirmed in the Electrical Characteristics table (Section 7.5), where C_CT is rated 0–26 µF across temperature.

Does the TPS389001QDSERQ1 require a pull-up resistor on the RESET pin?

Yes - the TPS389001QDSERQ1 features an open-drain RESET output and requires an external pull-up resistor (10 kΩ to 1 MΩ) to the target logic rail voltage (up to 5.5 V). Without this resistor, RESET cannot transition high, violating the functional truth table in Section 8.4 and preventing proper deassertion after fault clearance.

TPS389001QDSERQ1 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 6-WFDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: Adjustable/Selectable

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: -

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 6-WSON (1.5x1.5)

TPS389001QDSERQ1 FAQ

1.How can I place an order for TPS389001QDSERQ1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS389001QDSERQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TPS389001QDSERQ1 reliable?

The price and inventory of TPS389001QDSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS389001QDSERQ1 is usually 5 days.

3.What payment methods are accepted for TPS389001QDSERQ1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS389001QDSERQ1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS389001QDSERQ1?

TPS389001QDSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS389001QDSERQ1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TPS389001QDSERQ1?

For technical support, including TPS389001QDSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS389001QDSERQ1 requirements.

6.How does Aetrix verify that TPS389001QDSERQ1 is sourced from the original manufacturer or authorized distributors?

All TPS389001QDSERQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS389001QDSERQ1 meets industry standards.

7.What is the process for return or replacement of TPS389001QDSERQ1?

All TPS389001QDSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS389001QDSERQ1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TPS389001QDSERQ1 part is unused and in its original packaging.

Return procedure for TPS389001QDSERQ1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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