Texas Instruments 2U3836J25QDBVRG4Q1

Overview

2U3836J25QDBVRG4Q1 from Texas Instruments is a nanoscale automotive-grade supervisory circuit with 2.25 V fixed reset threshold, push-pull active-low RESET output, 220 nA typical supply current, 10 ms/200 ms selectable power-on reset delay, and operation from −40°C to 125°C. It monitors supply voltage in low-power automotive microcontrollers and battery-powered telematics modules.

For engineers reviewing the 2U3836J25QDBVRG4Q1 datasheet, 2U3836J25QDBVRG4Q1 pinout, 2U3836J25QDBVRG4Q1 application, or 2U3836J25QDBVRG4Q1 equivalent, this page delivers verified electrical parameters, SOT-23-5 pin mapping, automotive qualification evidence, reset timing behavior under CT configuration, and direct alternatives for functional substitution in safety-critical embedded systems.

Technical Context

The 2U3836J25QDBVRG4Q1 implements a precision band-gap reference-based voltage detection circuit with 40 mV hysteresis (for 2.25 V threshold), internal timer-controlled reset assertion, and manual reset input with 30 kΩ internal pullup. Its push-pull output drives logic-level loads without external pullup.

Reset assertion begins when VDD exceeds 1.1 V and remains active until VDD rises above 2.25 V (±3%); delay timing starts only after VDD crosses VIT. CT pin selection (GND = 10 ms typ, VDD = 200 ms typ) configures the reset timeout independently of supply voltage or temperature.

Key Specifications

Pinout & Package

2U3836J25QDBVRG4Q1 is housed in a 5-pin SOT-23 (DBV) package with 1.45 mm maximum height, JEDEC MO-178 compliant footprint, and Q3 quadrant pin-1 orientation on tape-and-reel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3836J25QDBVRQ1, 2U3836J25QDBVRG4Q1 offers identical electrical and mechanical specifications but uses TI's newer G4Q1 tape-and-reel packaging variant with updated reel quadrant marking (Q3). Compared with MAX6375XR22+T, it delivers 7× lower supply current, automotive qualification, and push-pull output-making it superior for battery-sensitive, safety-critical automotive use cases.

Availability

2U3836J25QDBVRG4Q1 is available at Aetrix Electronics and suitable for automotive ECUs, telematics units, ADAS camera modules, and electric power steering systems requiring stable component supply across extended product lifecycles.

Supply support for 2U3836J25QDBVRG4Q1 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 automotive ICs, with decades of experience in high-reliability power management and supervision solutions.

The TPS3836-Q1 family was designed specifically for automotive microcontroller and DSP reset supervision, emphasizing nanopower consumption, AEC-Q100 compliance, and configurable timing in compact SOT-23 packages.

FAQ

What is the exact reset threshold voltage of the 2U3836J25QDBVRG4Q1?

The 2U3836J25QDBVRG4Q1 has a nominal reset threshold voltage of 2.25 V with ±3% tolerance over −40°C to 125°C. This value is factory-trimmed and specified in the Electrical Characteristics table of the SGLS141A datasheet. The device asserts RESET when VDD falls below this threshold and releases it only after VDD rises above 2.25 V plus 40 mV hysteresis. The 2U3836J25QDBVRG4Q1 maintains this accuracy without external calibration.

Does the 2U3836J25QDBVRG4Q1 support both 10 ms and 200 ms reset delays?

Yes, the 2U3836J25QDBVRG4Q1 supports both delay options via the CT pin: connecting CT to GND selects a typical 10 ms delay, while connecting CT to VDD selects a typical 200 ms delay. These values are characterized across temperature and supply voltage per the Timing Requirements table. The 2U3836J25QDBVRG4Q1 does not require external capacitors or resistors - the timing is fully internal and factory-verified.

Is the 2U3836J25QDBVRG4Q1 pin-compatible with other TPS3836-Q1 variants?

Yes, the 2U3836J25QDBVRG4Q1 uses the same SOT-23-5 (DBV) package and identical pinout as all TPS3836-Q1 family members, including TPS3836E18QDBVRQ1 and TPS3836K33QDBVRQ1. Pin functions (CT, GND, MR, VDD, RESET) are consistent across the family. The 2U3836J25QDBVRG4Q1 differs only in threshold voltage and reel marking - no PCB layout changes are needed when substituting within the same package variant.

What is the maximum supply voltage the 2U3836J25QDBVRG4Q1 can tolerate?

The 2U3836J25QDBVRG4Q1 has an absolute maximum supply voltage rating of 7 V on the VDD pin, but its recommended operating range is 1.6 V to 6 V per the datasheet. Operating continuously at 7 V is not advised - the Absolute Maximum Ratings note specifies that exposure beyond 6 V should be limited to ≤1000 hours total. The 2U3836J25QDBVRG4Q1 delivers guaranteed performance only within the 1.6–6 V range.

How does the manual reset (MR) pin function on the 2U3836J25QDBVRG4Q1?

The MR pin on the 2U3836J25QDBVRG4Q1 is an active-low asynchronous input with an internal 30 kΩ pullup to VDD. When pulled low (≤0.3 × VDD), it forces RESET active regardless of VDD level. If unused, MR must be tied to VDD to prevent leakage-induced false resets. The 2U3836J25QDBVRG4Q1 specifies MR input current limits of ±340 µA and requires minimum pulse width of 1 µs for reliable assertion - confirmed in the Switching Characteristics table.