Texas Instruments TPS564208DDCT

Overview

TPS564208DDCT from Texas Instruments is a 4-A synchronous step-down DC-DC converter in a 6-pin SOT-23 (DDC) package, designed for compact, high-efficiency point-of-load regulation. It operates from 4.5 V to 17 V input, delivers adjustable output from 0.76 V to 7 V, features D-CAP2™ control for fast transient response, and integrates 50-mΩ high-side and 22-mΩ low-side MOSFETs - enabling digital TV power supplies and STB applications with minimal external components.

For engineers reviewing the TPS564208DDCT datasheet, TPS564208DDCT pinout, TPS564208DDCT application, or TPS564208DDCT equivalent, key selection considerations include its 560-kHz fixed-frequency operation, 1.6% VFB accuracy at 25°C, hiccup-mode overcurrent protection, pre-biased startup capability, and thermal shutdown at 172°C - all critical for reliable 4-A load regulation in space-constrained consumer electronics.

Technical Context

The TPS564208DDCT employs D-CAP2™ adaptive on-time control, combining internal ramp compensation with valley-current sensing to achieve stable operation without external loop compensation - supporting ultra-low-ESR ceramic and polymer output capacitors. Its control architecture enables pseudo-fixed 560-kHz switching across input voltages while maintaining fast load-step response.

Functional modes include continuous conduction mode (CCM) above 0 A minimum inductor current, standby via EN pin assertion, and hiccup-mode fault recovery triggered by cycle-by-cycle overcurrent detection. Protection features are non-latching: UVLO (4.3 V turn-on, 3.6 V shutdown), UVP (65% of nominal VOUT), and thermal shutdown (172°C with 38°C hysteresis).

Key Specifications

Pinout & Package

The TPS564208DDCT is housed in a 6-pin SOT-23 (DDC) package measuring 1.6 mm × 2.9 mm, optimized for thermal performance with R_θJA = 86.3°C/W and R_θJB = 13.3°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS564208DDCT, the TPS564201DDCT extends input range at minor frequency trade-off, while MP2342GJ-Z adds configurability at the cost of external compensation and missing pre-bias support - making TPS564208DDCT optimal for cost-sensitive, space-constrained consumer applications demanding plug-and-play stability.

Availability

TPS564208DDCT is available at Aetrix Electronics and suitable for digital TV power supplies, HD Blu-ray™ disc players, and digital set-top boxes requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for TPS564208DDCT 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 and embedded processing technologies, with decades of expertise in power management IC design and manufacturing.

The TPS564208DDCT belongs to TI's D-CAP2™ family of integrated synchronous buck regulators, engineered specifically for high-density consumer electronics where small size, fast transient response, and minimal external components are critical.

FAQ

What is the maximum continuous output current of the TPS564208DDCT?

The TPS564208DDCT delivers up to 4 A continuous output current under recommended operating conditions (T_J ≤ 125°C, proper PCB layout, and adequate thermal dissipation). This rating is validated across the full 4.5–17 V input range and applies to output voltages from 0.76 V to 7 V, with peak current capability exceeding 6 A during transient events before hiccup-mode activation.

Does the TPS564208DDCT support pre-biased output startup?

Yes, the TPS564208DDCT supports pre-biased output startup: when the VFB pin senses a voltage above the internal reference at power-on, the device delays switching until the internal soft-start reference ramps above that level. This prevents reverse current flow into the output capacitor and ensures controlled, monotonic ramp-up - a key requirement for multi-rail systems like digital STBs and surveillance DVRs.

What package type and dimensions does the TPS564208DDCT use?

The TPS564208DDCT is packaged in a 6-pin SOT-23 variant designated DDC, with nominal body dimensions of 1.60 mm × 2.90 mm and a maximum height of 1.45 mm. This compact footprint supports high-density layouts in consumer electronics, and its thermal metrics (R_θJA = 86.3°C/W, R_θJB = 13.3°C/W) are specified for JEDEC-standard 2-layer board construction.

How does the D-CAP2™ control mode benefit TPS564208DDCT designs?

D-CAP2™ control in the TPS564208DDCT eliminates the need for external compensation components by embedding adaptive on-time modulation with internal ramp generation. This enables stable operation with ultra-low-ESR ceramic or polymer output capacitors, reduces design iteration time, and improves transient response - achieving <±5% output deviation during 2-A load steps without tuning loop dynamics.

What protection features are integrated into the TPS564208DDCT?

The TPS564208DDCT integrates cycle-by-cycle overcurrent limit, hiccup-mode OCP (15.5 ms restart delay), non-latching undervoltage lockout (UVLO: 4.3 V turn-on, 3.6 V shutdown), output undervoltage protection (UVP at 65% VOUT), and thermal shutdown (172°C with 38°C hysteresis). All protections are fully autonomous and require no external circuitry - enhancing system robustness in unattended consumer devices.