Microchip Technology ATA663201-GBQW

Overview

ATA663201-GBQW from Microchip Technology is a 3.3V, 85 mA automotive-grade linear low-drop voltage regulator designed for LIN bus slave nodes. It operates across 5V–28V input supply, consumes ≤170 μA quiescent current even below regulation threshold (2V < VVS < 5.5V), and integrates undervoltage reset (NRES, 4 ms delay) with short-circuit and overtemperature protection. It serves as the primary power source for microcontrollers in automotive convenience electronics such as seat position controllers and mirror actuators.

For engineers reviewing the ATA663201-GBQW datasheet, ATA663201-GBQW pinout, ATA663201-GBQW application, or ATA663201-GBQW equivalent, this page delivers verified electrical parameters, validated operating modes (Active/Sleep/Unpowered), package-specific thermal design guidance, and confirmed drop-in alternatives for automotive BOM optimization under AEC-Q100 qualification.

Technical Context

The ATA663201-GBQW implements a PMOS-based LDO architecture with internal voltage reference and undervoltage detection circuitry. Its output remains regulated at 3.3V ±2% across load currents up to 85 mA and input voltages from 5V to 28V, with guaranteed stability using ≥1.8 μF MLC + 100 nF ceramic output capacitance.

It features fail-safe behavior during input undervoltage (VVS < 3.9V), automatic shutdown at junction temperature >150°C, and robust protection against LIN-bus-level transients per ISO 7637. The device supports unpowered operation down to VVS = 1.9V and maintains sub-170 μA supply current across its full valid input range - a key enabler for always-on automotive subsystems.

Key Specifications

Pinout & Package

ATA663201-GBQW is housed in an 8-lead 3 × 3 mm VDFN package with wettable flanks and exposed thermal pad (EP), rated Moisture Sensitivity Level 1. The EP must be soldered to a wide GND copper area for thermal performance (R_thJA ≈ 50 K/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATA663201-GBQW, ATA663203-GBQW offers identical form-factor and protection but targets 5V systems, while TLV73333PDBVR trades automotive qualification and integrated reset for higher current and smaller footprint - making ATA663201-GBQW the sole choice for AEC-Q100-compliant LIN slave power delivery with built-in reset.

Availability

ATA663201-GBQW is available at Aetrix Electronics and suitable for automotive seat control, power mirror actuation, steering column switches, and climate panel designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ATA663201-GBQW 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

Microchip Technology Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with ISO/TS 16949-certified manufacturing.

The ATA6632xx family was developed specifically for automotive LIN slave node power management - integrating precision regulation, fail-safe reset, and robust bus-side protection into a single AEC-Q100-qualified device to reduce system complexity and improve reliability.

FAQ

What is the maximum continuous output current of the ATA663201-GBQW?

The ATA663201-GBQW delivers up to 85 mA continuously at 3.3V output while maintaining regulation and thermal safety. This rating assumes proper PCB thermal design (exposed pad connected to ≥2 cm² GND copper) and ambient temperature ≤125°C. At higher loads or poor heatsinking, internal overtemperature protection will limit output to prevent damage.

Does the ATA663201-GBQW include a reset output, and how does it behave?

Yes, the ATA663201-GBQW features an open-drain NRES pin that asserts low for exactly 4 ms whenever VCC falls below 2.6V (typical). NRES remains active even if VCC drops to 0V, as it is powered from VS. This provides reliable, glitch-free reset signaling to the MCU without external components - a core feature confirmed in DS20006075C, Section 1.6.3.

Can the ATA663201-GBQW operate with input voltage below 5V?

Yes - the ATA663201-GBQW sustains regulation and draws ≤170 μA from VS across 2V < VVS < 5.5V, though full specification compliance (e.g., 3.3V ±2%) applies only above 5V. Below 5V, output voltage follows input minus dropout (≈0.3V), enabling graceful degradation during deep battery discharge - explicitly documented in DS20006075C, Table 1-1 and Section 1.4.

Is the ATA663201-GBQW pin-compatible with other devices in the ATA6632xx family?

Yes, ATA663201-GBQW shares identical 8-pin VDFN pinout and footprint with ATA663203-GBQW (5V), ATA663231-GBQW (3.3V SBC), and ATA663254-GBQW (5V SBC), enabling hardware reuse across 3.3V/5V regulator and SBC variants. Pin functions match Table 1-4 in DS20006075C, with NC pins consistently placed at positions 5–8.

What thermal design guidelines apply to the ATA663201-GBQW VDFN package?

The ATA663201-GBQW's exposed thermal pad (EP) must be soldered to a minimum 2 cm² GND copper area with ≥4 thermal vias (0.3 mm diameter) to achieve R_thJA ≈ 50 K/W. Without this, safe operating area shrinks significantly - e.g., at 85 mA and 28V input, junction temperature may exceed 150°C. This requirement is mandated in DS20006075C, Section 1.5 and Figure 1-12.