Texas Instruments TPS62736RGYR

Overview

TPS62736RGYR from Texas Instruments is an ultra-low-power, resistor-programmable buck converter optimized for 50-mA output current, operating from 2-V to 5.5-V input and delivering 1.3-V to (VIN − 0.2 V) output. It achieves >90% efficiency at 15 µA load, features 380-nA active quiescent current, 10-nA ship-mode current, and integrated VIN_OK power-good indication with programmable threshold. It targets energy harvesting systems powered by TEGs or solar cells where micropower efficiency and input voltage monitoring are critical.

For engineers reviewing the TPS62736RGYR datasheet, TPS62736RGYR pinout, TPS62736RGYR application, or TPS62736RGYR equivalent, this page delivers verified technical context, confirmed pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SLVSBO4C datasheet and RGY package documentation.

Technical Context

The TPS62736RGYR uses a time-sampled hysteretic control architecture to minimize average quiescent current across ultra-low output currents (down to 0.1 µA), enabling operation directly from low-energy sources like thermoelectric generators. Its dual enable inputs (EN1/EN2) implement three distinct functional modes: active regulation, standby (VIN_OK monitoring only), and ship mode (full shutdown at 10 nA).

It integrates a push-pull VIN_OK driver with resistor-programmable threshold (2–5.5 V range), independent of output regulation, and supports 100% duty-cycle pass-through when input falls near output voltage. The internal high-side (2.4 Ω typ) and low-side (1.1 Ω typ) MOSFETs are optimized for low I²R loss at sub-50-mA loads.

Key Specifications

Pinout & Package

TPS62736RGYR is housed in a 14-pin VQFN package (RGY), 3.5 mm × 3.5 mm, with exposed thermal pad connected to VSS. Pin numbering follows TI's top-view convention (pin 1 at bottom-left corner).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power buck converter applications.

Compared with TPS62736RGYR, TPS62746RQYR trades VIN_OK configurability for higher current, while MAX17222ELT+T sacrifices programmability and monitoring for lower IQ and simpler BOM - making TPS62736RGYR optimal for energy-harvesting systems needing both precision regulation and intelligent input supervision.

Availability

TPS62736RGYR is available at Aetrix Electronics and suitable for ultra-low-power wireless sensor networks, energy harvesting subsystems, and portable medical monitors requiring stable component supply across extended production lifecycles.

Supply support for TPS62736RGYR 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 technologies, with decades of expertise in ultra-low-power design.

The TPS6273x product line was engineered specifically for energy-constrained environments - including TEG, solar, and battery-powered IoT endpoints - where microwatt-level efficiency and intelligent power supervision determine system viability.

FAQ

What is the minimum input voltage required for TPS62736RGYR to regulate output?

The TPS62736RGYR begins regulating when input voltage reaches 2 V, per its recommended operating conditions. Below 2 V, the device enters undervoltage lockout (UVLO) and disables switching. At input voltages within 30 mV of the programmed output (e.g., VIN = 1.83 V for VOUT = 1.8 V), it enters 100% duty-cycle pass mode to maintain output without dropout - a key feature for energy harvesting sources with collapsing voltage profiles.

How does TPS62736RGYR achieve >90% efficiency at only 15 µA output current?

The TPS62736RGYR achieves >90% efficiency at 15 µA through a time-based sampling hysteretic control architecture that drastically reduces switching losses and gate-drive current at ultra-light loads. Combined with 380-nA quiescent current and optimized MOSFET R_DS(on) (2.4 Ω high-side, 1.1 Ω low-side), it minimizes static and dynamic losses far beyond conventional PWM buck converters - a design priority for energy harvesting applications.

Can TPS62736RGYR be used with a 1.3-V output setting?

Yes, TPS62736RGYR supports resistor-programmable output from 1.3 V up to (VIN − 0.2 V). When configured for 1.3 V, it maintains ±2% regulation accuracy across load (100 µA–50 mA) and temperature (–40°C to +85°C), with typical output ripple of 20 mV_pp at 1 mA using a 22-µF output capacitor - making it suitable for powering low-voltage logic and precision analog circuits.

What is the function of the VRDIV pin on TPS62736RGYR?

The VRDIV pin on TPS62736RGYR provides a stable 1.21 V (±0.5%) internal reference voltage used to bias both the VOUT_SET and VIN_OK_SET resistor dividers. This eliminates need for external references and ensures coordinated, accurate programming of output voltage and input power-good threshold - critical for maintaining system reliability across varying source conditions in energy harvesting deployments.

Does TPS62736RGYR require external compensation components?

No, TPS62736RGYR is internally compensated and requires no external compensation components. Its hysteretic control architecture eliminates traditional Type-II/III compensation networks. Only standard external passive components are needed: 4.7-µF input capacitor, 10–22-µF output capacitor, and 4.7–10-µH inductor - simplifying layout and reducing BOM count for space-constrained IoT endpoints.