Texas Instruments TPS62110RSARG4

Overview

TPS62110RSARG4 from Texas Instruments is an adjustable-output, synchronous step-down DC-DC converter optimized for battery-powered and 12-V rail systems. It delivers up to 1.5 A output current with 95% peak efficiency, operates from 3.1 V to 17 V input, regulates output from 1.2 V to 16 V via external feedback divider, and features PFM/PWM hybrid mode for light-load efficiency in handheld scanners and point-of-load applications.

For engineers reviewing the TPS62110RSARG4 datasheet, TPS62110RSARG4 pinout, TPS62110RSARG4 application, or TPS62110RSARG4 equivalent, key selection criteria include its 16-pin VQFN package, 1-MHz nominal switching frequency, 20-µA quiescent current in PFM mode, thermal shutdown at 145°C, and compatibility with ceramic output capacitors as small as 22 µF.

Technical Context

The TPS62110RSARG4 uses voltage-mode control with input-voltage feedforward for fast line/load transient response. Its dual MOSFET power stage integrates a 250-mΩ P-channel high-side switch and a 200-mΩ N-channel low-side rectifier, enabling 100% duty-cycle operation for ultra-low dropout.

It supports three functional modes: forced PWM (SYNC = HIGH), PFM/PWM auto-switching (SYNC = GND), and shutdown (EN = LOW). The device includes undervoltage lockout (2.8–3.1 V threshold), internal soft-start (1 ms typical), and open-drain PG/LBO outputs with 98.4% output voltage trip point and 1.256 V LBI threshold.

Key Specifications

Pinout & Package

TPS62110RSARG4 is housed in a thermally enhanced 4.00 mm × 4.00 mm, 16-pin VQFN (RSA) package with exposed thermal pad soldered to AGND for optimal power dissipation (R_θJB = 16.3°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS62113RSARG4, the TPS62110RSARG4 lacks enhanced low-battery supervision but matches all regulation, efficiency, and thermal specs. Against TPS62130ARGTR, it trades higher current capability for wider input range and integrated battery monitoring - making it preferable for multi-rail, battery-backed systems.

Availability

TPS62110RSARG4 is available at Aetrix Electronics and suitable for handheld scanners, point-of-load regulation from 12-V buses, and medical handheld devices requiring stable component supply with consistent parametric performance across production batches.

Supply support for TPS62110RSARG4 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 TPS6211x product line was designed specifically for portable and industrial systems requiring high-efficiency, wide-input-range step-down regulation with integrated protection and battery monitoring - targeting applications where size, thermal performance, and long battery life are critical.

FAQ

What is the recommended input capacitor for TPS62110RSARG4?

The TPS62110RSARG4 requires a minimum 10-µF X5R/X7R ceramic capacitor placed close to the VIN and PGND pins. TI recommends using a 25-V-rated 10-µF capacitor in parallel with a 1-µF 25-V ceramic capacitor to handle both bulk energy storage and high-frequency switching noise. This configuration ensures stable operation across the full 3.1–17 V input range and prevents input rail collapse during load transients.

Does TPS62110RSARG4 support prebiased start-up?

Yes, the TPS62110RSARG4 supports monotonic prebiased start-up. During this mode, the internal N-channel MOSFET remains off until the soft-start ramp exceeds the existing output voltage, preventing reverse current flow into a precharged rail. This behavior is confirmed in the datasheet's "Soft Start" section and is essential for hot-swap or redundant power supply applications where the output may already be biased by another source.

What is the maximum achievable output voltage accuracy for TPS62110RSARG4?

The TPS62110RSARG4 achieves ±2% output voltage accuracy over the full operating range (0 mA to 1.5 A, –40°C to 85°C, 3.1 V to 17 V input) when using a precision FB resistor divider. This specification includes combined effects of reference voltage tolerance (1.153 V ±1%), resistor ratio error, and temperature drift. Accuracy degrades to ±3% for fixed-output variants like TPS62111, but TPS62110RSARG4 maintains the tighter ±2% spec due to its adjustable architecture.

Can TPS62110RSARG4 be synchronized to an external clock below 800 kHz?

No, the TPS62110RSARG4 cannot be synchronized to external clocks below 800 kHz. Its SYNC pin accepts only CMOS-level signals within the 0.8 MHz to 1.4 MHz range, as specified in the Electrical Characteristics table. Attempting synchronization outside this window causes the device to revert to its internal 1-MHz oscillator. For sub-800 kHz operation, consider asynchronous designs or alternative converters such as the TPS6223x family.

How does thermal performance differ between TPS62110RSARG4 and TPS62111RSARG4?

Thermal performance is identical between TPS62110RSARG4 and TPS62111RSARG4 because both share the same 16-pin VQFN (RSA) package, die construction, and thermal metrics: R_θJA = 48.2°C/W, R_θJC(bot) = 3.3°C/W, and R_θJB = 16.3°C/W. The only functional difference is output voltage configuration (adjustable vs. fixed 3.3 V); power dissipation and junction-to-board thermal resistance are unchanged under equivalent load, input voltage, and PCB layout conditions.