Texas Instruments TPS3703A5330DSER

Overview

TPS3703A5330DSER from Texas Instruments is a high-accuracy window voltage supervisor IC with integrated overvoltage (OV) and undervoltage (UV) detection, ±0.7% threshold accuracy over –40°C to +125°C, 7 µA max quiescent current, and fixed 10 ms / 200 ms reset time delay selection via CT pin configuration. It monitors low-voltage rails (1.7 V–5.5 V) in safety-critical power sequencing for industrial processors and DC-DC regulators.

For engineers reviewing the TPS3703A5330DSER datasheet, TPS3703A5330DSER pinout, TPS3703A5330DSER application, or TPS3703A5330DSER equivalent, key selection criteria include its 3.3 V nominal UV/OV window threshold, WSON-6 (1.5 mm × 1.5 mm) package, open-drain active-low RESET output with latch mode, and factory-programmed ±5% window tolerance - critical for narrow-margin supply monitoring in motor drives and data center power systems.

Technical Context

The TPS3703A5330DSER implements dual precision comparators with an internal trimmed resistor divider and reference, eliminating external resistors and enabling ±0.7% total threshold accuracy across temperature. Its CT pin supports two factory-set delays (10 ms when floating, 200 ms when tied to VDD) plus capacitor-programmable timing.

It features separate SENSE and VDD pins for supply redundancy, internal glitch immunity (3.5 µs at 5% overdrive), and hysteresis (0.3–0.8% of threshold) to prevent false resets during rail transitions. The RESET output latches low until both SENSE re-enters the valid window and the full delay tD expires after MR deassertion or voltage recovery.

Key Specifications

Pinout & Package

TPS3703A5330DSER is housed in a 6-pin WSON package (1.50 mm × 1.50 mm, 0.5 mm pitch) with wettable flanks, optimized for space-constrained industrial PCBs and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3703A5330DSER, the TPS389001DSER offers superior ±2% window accuracy but sacrifices manual reset capability and CT-based delay flexibility; the TPS3703A5330DSER provides broader system integration value through MR support, dual delay modes, and ±5% tolerance aligned with standard 3.3 V supply specs.

Availability

TPS3703A5330DSER is available at Aetrix Electronics and suitable for industrial motor drives, data center power management, and grid infrastructure applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TPS3703A5330DSER 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 delivering analog and embedded processing solutions, with over 90 years of innovation in power management, signal chain, and real-time control ICs.

The TPS3703 family is designed for high-reliability voltage monitoring in industrial, automotive, and enterprise systems - emphasizing accuracy, small footprint, and resistorless configuration to simplify safety-compliant power sequencing.

FAQ

What is the exact UV and OV threshold voltage for TPS3703A5330DSER?

The TPS3703A5330DSER has a nominal 3.3 V window threshold with ±5% tolerance: undervoltage threshold (VIT−) is 3.135 V and overvoltage threshold (VIT+) is 3.465 V, specified with ±0.7% accuracy over –40°C to +125°C. These values are factory-trimmed and do not require external resistor calibration - confirmed in TI's SBVS249B datasheet Section 7.5.

How does the CT pin configure reset delay on TPS3703A5330DSER?

On TPS3703A5330DSER, the CT pin selects between two fixed delays: 10 ms when left floating (open), and 200 ms when tied to VDD via a 10 kΩ pull-up resistor. The device automatically detects CT pin state each time SENSE re-enters the valid window - no software or external timing components are needed for either mode.

Does TPS3703A5330DSER support manual reset, and how is it implemented?

Yes, TPS3703A5330DSER supports manual reset via the MR pin: driving MR below 0.3 V (VMR_L) asserts RESET low immediately, and RESET remains latched low until MR rises above 1.4 V (VMR_H) and SENSE re-enters the valid window for the full delay tD (10 ms or 200 ms). MR has an internal 100 kΩ pull-up, so it may be left floating if unused.

What package type and dimensions does TPS3703A5330DSER use?

TPS3703A5330DSER uses the DSE package - a 6-pin WSON variant measuring 1.50 mm × 1.50 mm with 0.5 mm pitch and wettable flanks. This ultra-compact, leadless package supports automated optical inspection and high-density PCB layouts typical in industrial and enterprise equipment - documented in TI's SBVS249B Mechanical Information section.

Can TPS3703A5330DSER monitor a different voltage rail than its own supply?

Yes, TPS3703A5330DSER supports independent SENSE and VDD pins: SENSE monitors the target rail (e.g., 3.3 V), while VDD can be powered from a separate, more stable supply (e.g., 5 V or dedicated LDO output). This separation enables redundancy and meets functional safety requirements for critical systems - explicitly described in Section 8.3.2 of the datasheet.