Texas Instruments TPS3807A30DCKT

Overview

TPS3807A30DCKT from Texas Instruments is a dual-channel microprocessor supervisory circuit in SC70-5 package, featuring fixed 3.00 V ±1% VDD monitor and adjustable SENSE input with 1.225 V threshold and 30 mV hysteresis. It delivers open-drain RSTVDD and RSTSENSE outputs, 3.5 µA typical quiescent current, and operates from –40°C to +85°C - used for battery-good monitoring and system supply supervision in portable electronics.

For engineers reviewing the TPS3807A30DCKT datasheet, TPS3807A30DCKT pinout, TPS3807A30DCKT application, or TPS3807A30DCKT equivalent, key selection criteria include dual-threshold accuracy, ultra-low IQ for battery longevity, SC70-5 footprint constraints, and open-drain reset timing behavior under varying load and temperature conditions.

Technical Context

The TPS3807A30DCKT integrates two independent voltage monitors: one with factory-trimmed 3.00 V (±1%) threshold for VDD supervision, and a second with user-configurable SENSE input referenced to a precision 1.225 V internal bandgap. Both channels use hysteresis-30 mV on SENSE-to prevent chatter during slow-rising/falling inputs.

Its functional architecture employs a low-power reference and comparator stage driving open-drain NMOS outputs (RSTVDD and RSTSENSE), requiring external pull-up resistors (10 kΩ to 1 MΩ). The device achieves stable operation across 1.8 V–6.5 V supply range while maintaining <7.5 µA max IDD at 6.5 V.

Key Specifications

Pinout & Package

TPS3807A30DCKT uses the SC70-5 (DCK) package: 5-pin, single-row, gull-wing lead frame with 0.65 mm pitch, 1.1 mm max height, and Q3 pin 1 quadrant marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply monitoring applications.

Compared with TPS3807A30DCKT, TPS3808G33DBVR offers lower quiescent current but sacrifices SENSE flexibility and pin compatibility, while MAX6326UT30+T reduces package size and cost at the expense of dual-monitoring capability and open-drain configurability.

Availability

TPS3807A30DCKT is available at Aetrix Electronics and suitable for battery-powered handheld devices, FPGA/ASIC power management, and industrial embedded controllers requiring stable component supply with long-term manufacturability.

Supply support for TPS3807A30DCKT 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, embedded processing, and connectivity solutions with emphasis on power efficiency, reliability, and system integration.

The TPS3807 family was designed specifically for dual-rail voltage supervision in space- and power-constrained portable electronics, combining precision thresholds, ultra-low IQ, and SC70 packaging for next-generation mobile and IoT applications.

FAQ

What is the exact VDD threshold voltage specification for TPS3807A30DCKT?

The TPS3807A30DCKT has a factory-trimmed VDD threshold of 3.000 V with ±1% tolerance over –40°C to +85°C, meaning the actual negative-going trip point falls between 2.963 V and 3.037 V. This value is guaranteed per TI's SBVS061B datasheet and applies specifically to the "A30" variant, not other members of the TPS3807 family.

Does TPS3807A30DCKT support monitoring of voltages higher than its VDD supply?

Yes - both RSTVDD and RSTSENSE are open-drain outputs, allowing external pull-up resistors to voltages higher than VDD (up to +7 V per absolute maximum ratings). This enables TPS3807A30DCKT to drive reset lines referenced to higher supply domains, such as 5 V or 12 V logic buses, without level-shifter circuitry.

How is the SENSE threshold set, and what is its hysteresis behavior?

The SENSE threshold is fixed internally at 1.225 V; users scale the monitored voltage using an external resistor divider connected to the SENSE pin. Hysteresis is fixed at 30 mV and applies only to the SENSE channel - the output releases when SENSE rises above 1.255 V and asserts again when it falls below 1.225 V.

What is the recommended bypass capacitor for TPS3807A30DCKT, and where should it be placed?

A 0.1 µF ceramic capacitor is required on both VDD and SENSE pins, placed as close as possible (<2 mm trace length) to each respective pin. This minimizes noise coupling and ensures stable threshold detection, especially critical for the precision 1.225 V reference and 1% VDD accuracy.

Can TPS3807A30DCKT replace a single-channel supervisor in existing designs?

Yes - TPS3807A30DCKT can function as a single-channel supervisor by connecting VDD to the monitored rail and leaving SENSE unconnected (or tied to GND via 100 kΩ), while using only RSTVDD. However, its SC70-5 footprint differs from common SOT-23-3 supervisors, so PCB layout modification is required despite functional overlap.