Texas Instruments TPS61099DRVR

Overview

TPS61099DRVR from Texas Instruments is an ultra-low-quiescent-current synchronous boost converter designed for battery-powered systems requiring extended runtime and minimal standby loss. It operates from 0.7V to 5.5V input, delivers adjustable 1.8V–5.5V output, features 400nA IQ into VIN and 600nA IQ into VOUT, and supports true disconnection during shutdown - enabling use in optical heart rate monitor LED bias and memory LCD bias circuits.

For engineers reviewing the TPS61099DRVR datasheet, TPS61099DRVR pinout, TPS61099DRVR application, or TPS61099DRVR equivalent, key selection considerations include its hysteretic control topology, down-mode regulation capability (VIN > VOUT), 0.8A peak switch current limit, 6-pin WSON package, and efficiency performance across microamp-to-300mA load range.

Technical Context

The TPS61099DRVR employs a hysteretic current-mode control architecture that dynamically adjusts switching frequency based on input voltage, output voltage, and inductor value - eliminating need for external compensation while maintaining high light-load efficiency. It integrates both low-side and high-side synchronous MOSFETs with R_DS(on) of 250–400mΩ (LS) and 300–750mΩ (HS), enabling efficient boost, down-mode, and pass-through operation.

Down mode regulates output even when VIN exceeds VOUT (up to VIN = VOUT + 0.5V), using gate control of the rectifying PMOS to create a programmable voltage drop; pass-through mode engages above that threshold, delivering near-lossless conduction via continuous PMOS turn-on and LS switch disablement - all without external logic or mode pins.

Key Specifications

Pinout & Package

TPS61099DRVR is housed in a 6-pin 2mm × 2mm WSON package (DRY suffix), with exposed thermal pad connected to GND for enhanced power dissipation. Pin assignment matches TI's DRV package designation and is validated per datasheet Figure 5-2 and Table 5-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61099DRVR, TPS610994DRVR offers plug-and-play simplicity for fixed 3.3V rails, while MAX17222ELT+T provides smaller size at the expense of peak current headroom and multi-mode regulation - making TPS61099DRVR optimal for flexible, high-reliability battery systems demanding full operational mode coverage.

Availability

TPS61099DRVR is available at Aetrix Electronics and suitable for wearable sensor nodes, optical heart rate monitors, memory LCD bias circuits, and other ultra-low-power portable electronics requiring stable component supply across long product lifecycles.

Supply support for TPS61099DRVR 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 high-efficiency DC/DC conversion.

The TPS61099x family was engineered specifically for battery-constrained applications - prioritizing nanoamp quiescent current, seamless mode transitions, and minimal external component count to enable next-generation wearables and IoT edge sensors.

FAQ

What is the minimum input voltage required for TPS61099DRVR to start up?

The TPS61099DRVR can start up from as low as 0.7V input under light load conditions (e.g., >3kΩ). Startup fails if load current prevents VOUT from rising above ~1.6V during soft-start; increasing input voltage or reducing pre-load resolves this. The device incorporates undervoltage lockout with 0.7V rising threshold and 200mV hysteresis to ensure reliable operation.

How does TPS61099DRVR achieve ultra-low quiescent current in shutdown mode?

In shutdown mode, the TPS61099DRVR disables all internal circuitry and fully turns off the rectifying PMOS switch, disconnecting VOUT from VIN. This results in total input current consumption of ≤0.5µA at VIN = 3.7V - verified across –40°C to 85°C - ensuring negligible battery drain during system sleep or storage.

Can TPS61099DRVR regulate output when input voltage exceeds the target output?

Yes. The TPS61099DRVR enters down mode when VIN rises above VOUT – 50mV, maintaining precise output regulation by controlling the rectifying PMOS gate voltage. It transitions to pass-through mode at VIN = VOUT + 0.5V, where VOUT follows VIN minus inductor DCR and PMOS R_DS(on) drop - enabling seamless operation across full battery discharge.

What package and thermal characteristics apply to TPS61099DRVR?

TPS61099DRVR uses the 6-pin 2mm × 2mm WSON (DRV) package with exposed thermal pad. Its junction-to-board thermal resistance (R_θJB) is 33.9°C/W, and junction-to-ambient (R_θJA) is 71.7°C/W - requiring minimum 100mm² copper pour under the thermal pad for reliable 300mA continuous operation at 125°C ambient.

Does TPS61099DRVR require external compensation components?

No. The TPS61099DRVR implements hysteretic current-mode control, which is inherently stable and eliminates the need for external compensation networks, error amplifiers, or phase-margin tuning. This simplifies design, reduces BOM count, and ensures consistent performance across input/output/temperature variations without loop stability concerns.