Texas Instruments TL7702AIPG4

Overview

TL7702AIPG4 from Texas Instruments is a precision supply-voltage supervisor IC designed for reset control in low-voltage microprocessor systems. It features a 2.53 V (typ) undervoltage detection threshold at SENSE, ±10 mV hysteresis, 0.65–2.6 ms externally adjustable reset pulse duration via CT capacitor, and dual active-high/active-low open-collector RESET outputs. It operates from 3.5 V to 18 V and supports industrial temperature range (–40°C to +85°C).

For engineers reviewing the TL7702AIPG4 datasheet, TL7702AIPG4 pinout, TL7702AIPG4 application, or TL7702AIPG4 equivalent, this device serves as a fixed-threshold (2.5 V) voltage monitor with programmable delay, reference output, and dual complementary reset signaling - critical for reliable power-on initialization and brownout recovery in embedded controllers and battery-powered systems.

Technical Context

The TL7702AIPG4 implements a precision bandgap-based voltage reference (2.53 V typ) feeding a comparator that monitors the SENSE input against V_IT− = 2.53 V. Its internal delay timer is triggered upon V_CC reaching ~3.6 V and SENSE exceeding V_IT+, generating a user-defined reset pulse via external CT capacitor (td ≈ 1.3×10⁴ × C_T seconds).

It delivers dual complementary reset signals (RESET high-active, RESET low-active), both open-collector, enabling flexible interface with microcontrollers requiring either polarity. The REF output provides a stable 2.53 V reference usable for external circuitry, with <16 mV variation over –40°C to +85°C and <10 mV over 3.5–18 V supply range.

Key Specifications

Pinout & Package

TL7702AIPG4 is packaged in an 8-pin PDIP (Plastic Dual In-line Package) with body size 9.81 mm × 6.35 mm, lead finish NiPdAu, and through-hole mounting compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL7702ACP, TL7702AIPG4 offers identical supervision functionality with enhanced environmental compliance; versus TPS3808G12DBVR, it trades adjustability and ultra-low IQ for integrated reference and fixed-precision 2.53 V detection - simplifying design for 2.5 V rail monitoring.

Availability

TL7702AIPG4 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, automotive body electronics, and IoT edge devices requiring stable component supply with long-term lifecycle support.

Supply support for TL7702AIPG4 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 decades of expertise in power management, signal chain, and timing ICs.

The TL77xxA family was engineered specifically as cost-effective, precision supply-voltage supervisors for microcomputer and microprocessor reset control - emphasizing robustness, wide supply range, and minimal external components.

FAQ

What is the exact undervoltage detection threshold of the TL7702AIPG4?

The TL7702AIPG4 has a nominal negative-going input threshold voltage (V_IT−) of 2.53 V at 25°C, with a tolerance of ±5 mV (2.48 V to 2.58 V). This fixed threshold is factory-trimmed and applies specifically to the TL7702A variant; other TL77xxA parts have different thresholds (e.g., TL7705A = 4.55 V). The TL7702AIPG4 does not require external resistors to set this value.

Does the TL7702AIPG4 provide a usable reference voltage output?

Yes, the TL7702AIPG4 provides a dedicated REF output (Pin 1) delivering a precision 2.53 V ±5 mV reference voltage. This output is temperature-compensated (<16 mV drift from –40°C to +85°C) and supply-stable (<10 mV variation over 3.5–18 V V_CC). A 0.1 µF capacitor to GND is required for noise suppression, making REF suitable for ADC references or sensor biasing.

How is the reset pulse duration set on the TL7702AIPG4?

The reset pulse duration on the TL7702AIPG4 is set by an external capacitor connected to the CT pin (Pin 3). The relationship is td ≈ 1.3 × 10⁴ × C_T seconds, where C_T is in farads. For example, a 0.1 µF capacitor yields ~1.3 ms. This timing begins after V_CC reaches ~3.6 V and SENSE exceeds V_IT+; the pulse holds RESET/RESET active until completion.

What are the output types and drive capabilities of TL7702AIPG4 RESET pins?

The TL7702AIPG4 features two open-collector outputs: RESET (Pin 6, active-high) and RESET (Pin 5, active-low). Both sink up to 16 mA (I_OL) at 0.4 V and can be pulled up to any voltage ≤ V_CC. They are not push-pull - external pull-up resistors are mandatory for logic-level definition. This architecture enables wired-OR reset buses and voltage-level translation.

Is the TL7702AIPG4 compatible with PDIP socket mounting and wave soldering?

Yes, the TL7702AIPG4 uses an industry-standard 8-pin PDIP package (9.81 mm × 6.35 mm body) with through-hole leads suitable for socket insertion, manual prototyping, and wave soldering. Its lead finish is NiPdAu (RoHS-compliant), and it carries MSL "N/A" - meaning moisture sensitivity level is not applicable for through-hole packages, eliminating bake requirements prior to soldering.