Texas Instruments TPS563210ADDFT

Overview

TPS563210ADDFT from Texas Instruments is a 3-A synchronous step-down DC/DC converter in an 8-pin SOT-23 (DDF) package, featuring integrated 68-mΩ high-side and 39-mΩ low-side MOSFETs, D-CAP2™ control for fast transient response, 650-kHz fixed switching frequency, and 0.76–7-V adjustable output voltage. It delivers high efficiency across light-to-heavy loads in compact digital power supplies for consumer electronics.

For engineers reviewing the TPS563210ADDFT datasheet, TPS563210ADDFT pinout, TPS563210ADDFT application, or TPS563210ADDFT equivalent, key selection criteria include its 4.5–17-V input range, 1% VFB accuracy at 25°C, cycle-by-cycle over-current protection, pre-biased startup capability, and power-good (PG) open-drain output - all critical for reliable point-of-load regulation in space-constrained designs.

Technical Context

The TPS563210ADDFT employs D-CAP2™ adaptive on-time control, combining internal ramp compensation with pseudo-fixed-frequency operation to enable stable regulation using ultra-low-ESR ceramic or polymer output capacitors-no external compensation required. Its control loop maintains fast load-step response while supporting discontinuous conduction mode via Advanced Eco-mode™ for high light-load efficiency.

Functional safety features include non-latch over-voltage protection (125% × VFBTH), hiccup-mode under-voltage protection (65% × VFBTH), thermal shutdown at 155°C with 35°C hysteresis, and UVLO with 3.75-V threshold and 0.32-V hysteresis. The device supports adjustable soft-start via external capacitor on SS pin and starts up from pre-biased outputs without reverse current flow.

Key Specifications

Pinout & Package

TPS563210ADDFT is housed in an 8-pin SOT-23 package (DDF), measuring 1.60 mm × 2.90 mm with 0.65-mm pitch. The thermally enhanced layout places GND (Pin 1) and SW (Pin 2) adjacent to maximize heat dissipation through PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS563210ADDFT, TPS562210ADDFT offers identical functionality at reduced current capacity and lower thermal stress, while MP2332HGTL-Z trades PG and compact height for wider input range - making TPS563210ADDFT optimal for space-constrained 12-V consumer power rails requiring robust sequencing.

Availability

TPS563210ADDFT is available at Aetrix Electronics and suitable for digital TV power supplies, home networking terminals, and Blu-ray disc player logic rails requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for TPS563210ADDFT 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 TPS56x210A family was engineered for high-density, low-component-count DC/DC conversion in consumer electronics - prioritizing fast transient response, light-load efficiency, and seamless integration into compact PCB layouts.

FAQ

What is the maximum output current capability of the TPS563210ADDFT?

The TPS563210ADDFT is rated for 3 A continuous output current under recommended operating conditions (T_A = –40°C to 85°C, proper PCB thermal design). Its current limit is specified at 3.5–4.2 A (typical), allowing brief overload tolerance. Derating is required above 85°C ambient or with insufficient copper area - consult θ_JA = 87.0 °C/W and thermal design guidelines in the datasheet for layout-specific limits.

Does the TPS563210ADDFT support output voltage adjustment, and what is the minimum programmable voltage?

Yes, the TPS563210ADDFT supports resistor-divider-based output voltage adjustment from 0.76 V to 7 V. The minimum output is set by its internal 0.765-V feedback reference voltage (V_FBTH). For example, using R2 = 10.0 kΩ and R1 = 3.74 kΩ yields 1.05 V. Values below 0.76 V are not supported due to reference architecture limitations and stability constraints.

Can the TPS563210ADDFT safely start up into a pre-biased output voltage?

Yes, the TPS563210ADDFT supports pre-biased startup: when enabled, it monitors V_FB and delays switching until the internal reference exceeds the present feedback voltage, preventing reverse current flow into the output capacitor. This behavior is confirmed in Section 7.3.2 of the datasheet and is critical for systems with multiple power domains or hot-swap requirements.

What is the purpose of the VBST pin on the TPS563210ADDFT, and what capacitor value is required?

The VBST pin supplies the bootstrap voltage for the high-side MOSFET gate driver. A 0.1-µF ceramic capacitor must be placed directly between VBST and SW pins to provide charge storage during high-side conduction. TI specifies X7R or better dielectric; placement must minimize loop inductance to prevent gate drive instability or shoot-through risk.

How does the power-good (PG) signal on the TPS563210ADDFT behave during startup and fault conditions?

The PG pin is an open-drain output that asserts high after 1.7× the soft-start time when V_OUT reaches within –10% of the target (e.g., ≥0.945 V for 1.05 V output). It pulls low if V_FB falls below 85% of V_FBTH (e.g., <0.65 V), indicating undervoltage. PG remains low during hiccup-mode faults and resumes high only after successful recovery - enabling reliable system sequencing and fault detection.