Texas Instruments TPS62A02ADRLR

Overview

TPS62A02ADRLR from Texas Instruments is a 2-A, synchronous buck DC/DC converter in SOT-563 (6-pin) package, operating from 2.5 V to 5.5 V input and delivering adjustable 0.6 V to VIN output with 2.4 MHz fixed-frequency PWM mode across full load range. It integrates 100 mΩ/67 mΩ high-side/low-side MOSFETs, achieves <23 µA quiescent current, and supports forced PWM operation for consistent EMI behavior in noise-sensitive applications like IP cameras and SSDs.

For engineers reviewing the TPS62A02ADRLR datasheet, TPS62A02ADRLR pinout, TPS62A02ADRLR application, or TPS62A02ADRLR equivalent, key selection criteria include its FPWM-only operation (no power-save mode), 2-A continuous output capability in compact 1.6 mm × 1.6 mm SOT-563, 1% FB voltage accuracy over –40°C to 125°C, and compatibility with low-ESR ceramic output capacitors down to 10 µF at ≥1.8 V output.

Technical Context

The TPS62A02ADRLR uses peak-current-mode control with adaptive off-time modulation, maintaining stable 2.4 MHz switching frequency across input (2.5–5.5 V), output (0.6–VIN), and load (0–2 A) variations. Its forced PWM architecture eliminates frequency dithering, enabling predictable EMI filtering and simplified compliance testing.

It features integrated 100 mΩ HS / 67 mΩ LS MOSFETs, internal soft-start (1 ms), active output discharge, HICCUP short-circuit protection, thermal shutdown (170°C), and undervoltage lockout (2.4 V rising threshold). Unlike PSM variants, it lacks power-good (PG) pin - Pin 6 is unconnected (NC) per device comparison table and pin configuration diagrams.

Key Specifications

Pinout & Package

SOT-563 (DRL) package: 1.60 mm × 1.60 mm, 6-pin surface-mount, thermally enhanced with exposed pad (not electrically connected per datasheet).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Compared with TPS62A02DRLR, the TPS62A02ADRLR trades light-load efficiency for EMI determinism; versus TLV62569PDDCR, it delivers identical electrical performance in a 65% smaller footprint but with higher thermal resistance - requiring careful attention to copper pour and airflow in 2-A continuous operation.

Availability

TPS62A02ADRLR is available at Aetrix Electronics and suitable for IP network cameras, solid state drives, wireless routers, battery-powered sensors, and industrial point-of-load applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TPS62A02ADRLR 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with leadership in power management ICs.

The TPS62A0x family was designed for high-efficiency, space-constrained point-of-load conversion in consumer, industrial, and networking equipment - prioritizing small footprint, low quiescent current, and robust protection features.

FAQ

What is the function of Pin 6 on the TPS62A02ADRLR?

Pin 6 on the TPS62A02ADRLR is a no-connect (NC) terminal. Unlike TPS62A01DRLR (which uses Pin 6 for power-good) or TPS62A02NDRLR (which uses Pin 6 for output sensing), the 'A' suffix indicates forced PWM operation and absence of PG or OUT functionality. The datasheet explicitly lists Pin 6 as NC for TPS62A02ADRLR in both the device comparison table and pin configuration diagrams - it must remain unconnected.

Does the TPS62A02ADRLR support power-good indication?

No, the TPS62A02ADRLR does not support power-good indication. Power-good (PG) functionality is only present on non-'A' and non-'N' variants such as TPS62A01DRLR and TPS62A02DRLR, where Pin 6 is designated as PG. The TPS62A02ADRLR omits PG entirely - confirmed by the device comparison table, pin function table, and functional block diagram which excludes PG circuitry for FPWM-only variants.

What is the maximum continuous output current of the TPS62A02ADRLR?

TPS62A02ADRLR delivers 2 A continuous output current under recommended operating conditions (T_J ≤ 125°C, V_IN ≥ 3.3 V). At lower input voltages (<3.3 V) or ambient temperatures >85°C, thermal shutdown may activate per EVM measurements - derating is required in those conditions. The 2-A rating assumes proper PCB thermal design with ≥1 in² 2-oz copper pour connected to the exposed pad (if used) and adequate airflow.

Can the TPS62A02ADRLR operate with an input voltage as low as 2.5 V?

Yes, the TPS62A02ADRLR operates with input voltages from 2.5 V to 5.5 V. Its undervoltage lockout (UVLO) rising threshold is 2.4 V, ensuring reliable startup at 2.5 V. However, at 2.5 V input and 2 A load, output voltage headroom becomes critical - the 100 mΩ HS R_DS(on) and inductor DCR limit minimum sustainable V_OUT per the 100% duty cycle equation: V_IN(MIN) = V_OUT + I_OUT × (R_DS(on) + R_L). For 1.2 V output at 2 A, 2.5 V input is viable with ≤650 mΩ total resistance.

Which external components are required for basic operation of the TPS62A02ADRLR?

The TPS62A02ADRLR requires four essential external components: (1) a 4.7 µF ceramic input capacitor between VIN and GND, (2) a 1.0 µH power inductor from SW to V_OUT, (3) a 22 µF ceramic output capacitor (for V_OUT ≥ 1.8 V) between V_OUT and GND, and (4) an FB resistor divider (e.g., 200 kΩ/100 kΩ for 1.8 V) to set output voltage. No feedforward capacitor is mandatory but a 120 pF unit improves transient response in FPWM mode.