Texas Instruments TPS562211DRLR

Overview

TPS562211DRLR from Texas Instruments is a 2-A synchronous buck DC-DC converter operating from 4.2 V to 18 V input, delivering 0.6 V to 7 V output with ±1% reference voltage accuracy, 600 kHz fixed switching frequency (±8.5%), and integrated 66-mΩ/33-mΩ MOSFETs. It serves as a primary power regulator in compact consumer and networking equipment.

For engineers reviewing the TPS562211DRLR datasheet, TPS562211DRLR pinout, TPS562211DRLR application, or TPS562211DRLR equivalent, key selection considerations include Eco-mode/FCCM operation mode selection, PG/SS dual-function pin configuration, internal compensation eliminating external loop components, and SOT583 package thermal performance (R_θJA = 116.7°C/W).

Technical Context

The TPS562211DRLR implements Advanced Emulated Current Mode (AECM) control-combining peak current sensing and emulated ripple for true fixed-frequency operation with fast transient response across 0.6–7 V output range. It supports selectable light-load modes (Eco-mode for high efficiency at light loads, FCCM for constant frequency under all loads) via MODE pin resistor configuration.

Protection architecture includes cycle-by-cycle high-side peak current limiting (3.5 A typ), low-side valley current limiting (2.6 A typ), non-latched OVP/UVP/UVLO, and thermal shutdown at 150°C with 20°C hysteresis. The device achieves 95% peak efficiency at 12 V_IN/5 V_OUT/2 A using standard 4.7 µH inductor and ceramic output capacitors.

Key Specifications

Pinout & Package

The TPS562211DRLR is housed in an 8-pin SOT583 package (1.6 mm × 2.1 mm, 0.55 mm height) optimized for thermal performance and board area reduction. Its exposed pad enhances thermal dissipation to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS562211DRLR, TPS562201DRLR offers identical feature set at reduced current rating and cost, while MP2315GJ-Z trades configurability and integration for wider input range and different package-neither provides the combined Eco/FCCM selection, PG/SS flexibility, and SOT583 thermal performance of the TPS562211DRLR.

Availability

TPS562211DRLR is available at Aetrix Electronics and suitable for set-top box, smart speaker, wired networking, and surveillance camera applications requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.

Supply support for TPS562211DRLR 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 TPS562211DRLR belongs to TI's D-CAP™-compatible synchronous buck converter family, designed specifically for space-constrained consumer and networking applications demanding high efficiency, small solution size, and simplified design-in.

FAQ

What is the recommended external soft-start capacitor value for TPS562211DRLR when using the SS function?

The TPS562211DRLR requires an external capacitor (C_SS) from PG/SS pin to GND when Soft-Start mode is selected. For a typical 2 ms internal soft-start time, use C_SS = 4.7 nF. Equation 1 in the datasheet (t_SS = 3.5 × C_SS(nF) × 0.6 V / 6.6 µA) confirms this value yields ~2 ms ramp time. Minimum C_SS is 4 nF to ensure stable start-up behavior; values above 10 nF increase ramp time linearly but may delay system boot.

Does TPS562211DRLR support pre-biased output startup?

Yes, the TPS562211DRLR supports pre-biased output startup. When the output capacitor is pre-charged, the device waits until the internal reference voltage exceeds the feedback voltage before initiating switching. This prevents reverse current flow into the output and ensures monotonic voltage ramp-up. The behavior is inherent to the AECM control architecture and requires no additional external components or configuration beyond standard FB divider and soft-start setup.

How is thermal performance characterized for TPS562211DRLR in the SOT583 package?

The TPS562211DRLR in SOT583 (DRL) package has R_θJA = 116.7°C/W (JEDEC standard board), R_θJC(top) = 41.7°C/W, and R_θJB = 20.9°C/W. On the official EVM, measured R_θJA is 70°C/W at 25°C ambient, 12 V_IN, 5 V_OUT, 2 A load. Thermal performance depends critically on PCB copper area under the thermal pad: ≥100 mm² of 2-oz copper with 4+ thermal vias to inner ground planes is recommended to maintain T_J < 125°C at full load.

Can the PG/SS pin of TPS562211DRLR be used to discharge the output capacitor during shutdown?

Yes, when Power-Good mode is selected (via MODE pin), the TPS562211DRLR pulls PG/SS low during EN disable, OVP, UVP, UVLO, or thermal shutdown. Connecting PG/SS to V_OUT through a resistor (R₃) discharges the output. Minimum R₃ is calculated as V_OUT/1.8 mA (e.g., 10 kΩ for 18 V_OUT). The discharge function remains active down to ~2.5 V input, enabling controlled rail collapse in sequenced systems.

What is the maximum achievable output voltage accuracy across temperature and line/load conditions for TPS562211DRLR?

The TPS562211DRLR guarantees ±1% reference voltage accuracy at 25°C. Over full operating temperature (–40°C to +125°C) and input voltage (4.2–18 V), V_FB is specified as 0.591 V to 0.609 V - a total error band of ±1.5% relative to nominal 0.6 V. Combined with resistor divider tolerance, typical system-level output accuracy remains within ±2% for properly designed layouts with low-noise FB routing and stable input supply.