Diodes Incorporated AZ7029ZTR-G1

Overview

AZ7029ZTR-G1 from BCD Semiconductor Manufacturing Limited is a precision voltage detector IC with 2.9V ±0.15V detection threshold, open-collector output, and built-in 50mV typical hysteresis-designed for reliable power-on reset and brown-out detection in microcontroller-based systems. It operates from 0.8V minimum supply voltage, draws only 30µA typical quiescent current at V_CC = 5.25V, and functions across –40°C to +85°C for industrial-grade embedded applications.

For engineers reviewing the AZ7029ZTR-G1 datasheet, AZ7029ZTR-G1 pinout, AZ7029ZTR-G1 application, or AZ7029ZTR-G1 equivalent, this device serves as a low-power, temperature-stable reset supervisor for CPU systems requiring accurate 2.9V supply monitoring, fast response (10µs tp_HL, 15µs tp_LH), and noise-immune operation via integrated hysteresis.

Technical Context

The AZ7029ZTR-G1 implements a precision bandgap reference and comparator architecture to monitor V_CC against a fixed 2.9V threshold (V_DET− = 2.75V min, V_DET+ = 3.05V max). Its open-collector output requires an external pull-up resistor and remains valid down to 0.8V V_CC, enabling robust reset assertion during deep brown-out conditions.

Hysteresis of 30–100mV prevents oscillation near threshold under noisy supply conditions. The device exhibits ±0.01%/°C detect voltage drift and maintains stable timing performance across temperature, with tp_HL and tp_LH specified under 1kΩ load and 100pF capacitance.

Key Specifications

Pinout & Package

AZ7029ZTR-G1 is supplied in SOT-89 package (3-pin, surface-mount), with lead-free green finish per RoHS and JEDEC standard dimensions (4.4–4.6mm × 3.95–4.25mm × 1.1mm height). Pin 1 = V_CC, Pin 2 = GND, Pin 3 = OUT (open-collector).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70329DBVR and MAX809SEUR+T, AZ7029ZTR-G1 offers superior brown-out resilience (0.8V min V_CC), higher output drive (16mA), and broader supply range (up to 18V), making it optimal for ruggedized industrial and multi-rail applications where reliability under stress matters more than nanoamp quiescent current.

Availability

AZ7029ZTR-G1 is available at Aetrix Electronics and suitable for industrial control panels, battery-powered edge sensors, and consumer appliance power management systems requiring stable component supply with consistent green packaging and RoHS compliance.

Supply support for AZ7029ZTR-G1 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

BCD Semiconductor Manufacturing Limited is a Shanghai-based analog IC designer and foundry partner specializing in high-reliability power management and signal conditioning devices for industrial and automotive markets.

AZ70XX series belongs to BCD's precision voltage supervisor product line, engineered specifically for cost-effective, noise-immune power monitoring in resource-constrained embedded systems without external components.

FAQ

What is the recommended pull-up resistor value for the open-collector output?

A 10kΩ pull-up to 3.3V or 5V is standard and ensures <0.4V low-level output while limiting sink current to safe levels. For faster rise times in high-noise environments, 4.7kΩ may be used-verified to maintain 16mA sink capability across –40°C to +85°C per datasheet Figure 9.

Can AZ7029ZTR-G1 operate from a 12V supply?

Yes-its absolute maximum V_CC rating is 20V, and recommended operating range extends to 18V. At 12V, quiescent current remains within 500µA (I_CCL max), and output leakage stays below 0.1µA, making it suitable for 12V industrial power rails without external regulation.

How does hysteresis affect reset release timing?

Hysteresis sets the release voltage at V_DET+ = V_DET− + V_HYS ≈ 3.05V. This means the output remains low until V_CC rises above 3.05V, preventing chatter during slow or noisy supply recovery-critical for stable microcontroller initialization per Figure 12 timing waveform.

Is AZ7029ZTR-G1 pin-compatible with other AZ70XX variants?

Yes-all AZ70XX devices in SOT-89 (R-package) or TO-92 (Z-package) share identical pinouts (V_CC-GND-OUT). Substituting AZ7029ZTR-G1 with AZ7033ZTR-G1 changes only the detection threshold (3.3V vs. 2.9V); no PCB redesign is needed if the new threshold meets system requirements.