Texas Instruments TPS62A01APDDCR

Overview

TPS62A01APDDCR from Texas Instruments is a 1A, forced-PWM synchronous buck DC/DC converter in SOT-23-6 package, operating from 2.5V to 5.5V input and delivering adjustable 0.6V–VIN output with 2.4MHz switching frequency, <23µA quiescent current, and 1% feedback accuracy over –40°C to 125°C. It serves as a compact, high-efficiency point-of-load regulator in space-constrained battery-powered systems.

For engineers reviewing the TPS62A01APDDCR datasheet, TPS62A01APDDCR pinout, TPS62A01APDDCR application, or TPS62A01APDDCR equivalent, this page delivers verified technical context, exact pin functions for SOT-23-6 layout, confirmed forced-PWM mode behavior, thermal shutdown at 170°C, and validated alternatives with documented functional differences - all aligned to TI's SLUSEG9E (June 2024) production data.

Technical Context

The TPS62A01APDDCR uses peak-current-mode control with adaptive off-time modulation, maintaining stable 2.4MHz PWM operation across full load range without power-save mode entry. Its integrated 100mΩ/67mΩ HS/LS MOSFETs enable high efficiency at 1A output while supporting 100% duty-cycle low-dropout operation under light loads or near-VIN output conditions.

It features internal soft-start (1ms), active output discharge, HICCUP short-circuit protection (32-cycle lockout), and open-drain power-good (PG) output with 93.5–96% threshold hysteresis. The device requires no external compensation and supports pre-biased start-up with feedforward capacitor option for improved transient response.

Key Specifications

Pinout & Package

SOT-23-6 (DDC) package: 2.90mm × 2.80mm body, 0.95mm max height, gull-wing leads, RoHS-compliant matte tin lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV62569PDDCR and TPS62A01PDDCR, the TPS62A01APDDCR uniquely guarantees fixed 2.4MHz operation across all loads - critical for EMI filtering predictability, RF coexistence, and avoiding beat frequencies in multi-rail systems - while retaining identical thermal performance and layout compatibility.

Availability

TPS62A01APDDCR is available at Aetrix Electronics and suitable for IP network cameras, multi-function printers, solid-state drives, wireless routers, and battery-powered portable electronics requiring stable component supply, consistent forced-PWM behavior, and industrial temperature support.

Supply support for TPS62A01APDDCR 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 and automotive-grade reliability.

The TPS62A0x family was designed specifically for space-constrained, battery-operated applications demanding high efficiency across wide load ranges - including consumer, industrial, and networking equipment where thermal and EMI performance are critical.

FAQ

What is the key functional distinction of TPS62A01APDDCR versus TPS62A01PDDCR?

The TPS62A01APDDCR operates exclusively in forced PWM mode across the entire 0–1A load range, maintaining a fixed 2.4MHz switching frequency. In contrast, the TPS62A01PDDCR automatically enters power-save mode (PSM) at light loads, causing variable frequency and potential audible noise. Both share identical SOT-23-6 pinout, thermal specs, and 1A rating - making TPS62A01APDDCR the choice for EMI-sensitive or timing-critical applications where frequency stability is mandatory.

Does TPS62A01APDDCR support pre-biased output startup?

Yes, the TPS62A01APDDCR supports pre-biased start-up: it can safely regulate into an already charged output capacitor without drawing reverse current or causing output voltage overshoot. This capability is explicitly confirmed in Section 7.3.3 of the SLUSEG9E datasheet and enables reliable power sequencing in multi-rail systems where downstream rails may power up before the TPS62A01APDDCR is enabled.

What is the maximum recommended output capacitance for TPS62A01APDDCR?

The TPS62A01APDDCR is validated for output capacitances up to 47µF depending on output voltage - specifically 44µF for V_OUT < 1.2V, 22µF for 1.2V ≤ V_OUT < 1.8V, and 10µF for V_OUT ≥ 1.8V. Larger values improve transient response and reduce ripple but require verification of loop stability; X7R/X5R ceramic types are strongly recommended for low ESR and stable capacitance over temperature and bias.

Can the PG pin of TPS62A01APDDCR be left unconnected?

No - the PG pin of TPS62A01APDDCR is an open-drain output requiring either an external pullup resistor (to ≤5.5V) or connection to GND if unused. Leaving it floating violates the absolute maximum rating for PG pin voltage and risks undefined logic states, unreliable power sequencing, or increased susceptibility to noise. Section 5.1 of the datasheet explicitly prohibits floating the PG pin.

What thermal derating applies to TPS62A01APDDCR at 85°C ambient?

At 85°C ambient, the TPS62A01APDDCR's 1A output rating remains valid only with adequate PCB copper area: minimum 1-in² 2-oz copper on inner layer connected to GND pin per JEDEC JESD51-7, achieving R_θJB ≈ 45.5°C/W. Without enhanced thermal relief, continuous 1A operation above 85°C ambient may trigger thermal shutdown (T_JSD = 170°C), as noted in Section 6.3's footnote (1) of the datasheet.