Texas Instruments TPS62A01ADRLR

Overview

TPS62A01ADRLR from Texas Instruments is a 1A, high-efficiency synchronous buck DC/DC converter in SOT-563 package, operating from 2.5V–5.5V input and delivering adjustable 0.6V–VIN output with 2.4MHz fixed-frequency PWM mode only. It features 180mΩ/120mΩ internal MOSFETs, <23µA quiescent current, and 1% feedback accuracy over –40°C to +125°C - used in battery-powered IP cameras and compact point-of-load supplies.

For engineers reviewing the TPS62A01ADRLR datasheet, TPS62A01ADRLR pinout, TPS62A01ADRLR application, or TPS62A01ADRLR equivalent, this page delivers verified electrical specs, functional pin definitions, real-world use cases, and validated alternative options for low-noise, forced-PWM power delivery in space-constrained designs.

Technical Context

The TPS62A01ADRLR implements a peak-current-controlled adaptive off-time architecture with fixed 2.4MHz switching frequency across full load range, eliminating frequency variation under changing VIN, VOUT, or IOUT. Its forced PWM (FPWM) operation ensures constant switching frequency and minimal output voltage ripple - critical for noise-sensitive analog or RF subsystems.

It integrates undervoltage lockout (2.3V rising threshold), thermal shutdown (170°C), HICCUP short-circuit protection, active output discharge, and internal soft-start (1ms). The device supports start-up into pre-biased outputs and operates down to 100% duty cycle for ultra-low dropout at light loads.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV62585DRLR and TPS62086DRCR, the TPS62A01ADRLR uniquely guarantees fixed-frequency operation across all loads - essential for EMI filtering predictability and avoiding beat frequencies in multi-rail systems - while retaining PG signaling and robust thermal protection.

Availability

TPS62A01ADRLR is available at Aetrix Electronics and suitable for IP network cameras, wireless routers, and battery-powered SSD controllers requiring stable component supply, long-term manufacturability, and AEC-Q200-aligned reliability.

Supply support for TPS62A01ADRLR 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 specializing in analog, embedded processing, and power management ICs, with decades of expertise in high-efficiency DC/DC conversion.

The TPS62A0x family was designed for space-constrained, battery-sensitive applications demanding high efficiency, low noise, and seamless integration - targeting consumer, industrial, and networking end equipment.

FAQ

What is the key functional difference between TPS62A01ADRLR and TPS62A01DRLR?

The TPS62A01ADRLR operates exclusively in forced PWM (FPWM) mode across the entire load range, ensuring constant 2.4MHz switching frequency and eliminating light-load frequency dither. In contrast, the TPS62A01DRLR automatically enters power-save mode (PSM) at light loads, varying switching frequency to maintain high efficiency - making TPS62A01ADRLR preferable for noise-sensitive applications where spectral content must remain predictable.

Does TPS62A01ADRLR support start-up into a pre-biased output?

Yes, the TPS62A01ADRLR supports start-up into a pre-biased output capacitor. Its internal control loop detects the initial output voltage and ramps toward the target setpoint without causing reverse current flow or output overshoot - a critical feature for hot-swap and multi-rail sequencing applications where downstream circuitry may already be powered.

What is the maximum recommended output capacitance for TPS62A01ADRLR?

The TPS62A01ADRLR is designed to operate stably with output capacitance from 10µF to 47µF, depending on output voltage. For VOUT ≥ 1.8V, minimum COUT is 10µF (ceramic, X7R/X5R); for 1.2V ≤ VOUT < 1.8V, 22µF is recommended; and for VOUT < 1.2V, 44µF is required. Exceeding 47µF is not prohibited but may affect transient response and soft-start timing.

Can the PG pin of TPS62A01ADRLR be left floating?

No, the PG pin of TPS62A01ADRLR must not be left floating. As an open-drain output, it requires either an external pullup resistor (to ≤5.5V) for active monitoring or connection to GND if unused. Leaving it unconnected risks undefined logic states, potential ESD susceptibility, and unreliable power sequencing in multi-rail systems where PG signals coordinate enable timing.

What thermal derating applies to TPS62A01ADRLR at 85°C ambient?

At 85°C ambient temperature with standard 2-layer JEDEC PCB layout, the TPS62A01ADRLR's junction temperature rise is ~70°C (RθJA = 157.3°C/W × 0.45W dissipation ≈ 71°C), reaching ~156°C - exceeding its 150°C max operating junction limit. Derating to ≤0.75A output current is recommended above 65°C ambient to ensure reliable operation within thermal specifications.