Texas Instruments TPS61096ADSST

Overview

TPS61096ADSST from Texas Instruments is an ultra-low-quiescent-current (1 µA) boost converter IC designed for high-voltage bias generation in battery-powered portable electronics. It operates from 1.8 V to 5.5 V input and delivers adjustable output from 4.5 V to 28 V, integrates dual low-power level shifters, and uses PFM peak-current control for >70% efficiency at 10 µA load - ideal for stylus and memory LCD bias applications.

For engineers reviewing the TPS61096ADSST datasheet, TPS61096ADSST pinout, TPS61096ADSST application, or TPS61096ADSST equivalent, key selection considerations include its 12-pin WSON package, selectable 250 mA/500 mA inductor peak current limit, integrated 30-V power switch and diode, dual level shifter operation referenced to VOUT, and UVLO (1.5 V rising) with thermal shutdown (150 °C).

Technical Context

The TPS61096ADSST employs a PFM peak-current control architecture operating in discontinuous conduction mode (DCM), enabling stable regulation across wide input/output/load ranges without external compensation. Its feedback loop references a precise 1.0 V internal bandgap (±2% over temperature), and output voltage is set via an external resistor divider connected to FB and VOSNS pins.

Two independent level shifter channels accept logic-level inputs (LVI1/LVI2) and translate them to full VOUT-rail outputs (HVO1/HVO2), each consuming only 0.5–3 µA quiescent current depending on input state. Level shifter propagation delay is ≤500 ns with 200 kHz pulse capability into ≤10 pF loads, and sourcing/sinking capability is 800 µA per channel.

Key Specifications

Pinout & Package

TPS61096ADSST is housed in a thermally enhanced 12-pin WSON package (3.0 mm × 2.0 mm × 0.75 mm) with exposed thermal pad (DSS variant). Pin 10 (GND) and the underside thermal pad must be soldered to a dedicated PCB ground plane for optimal thermal performance and EMI control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage boost converter with integrated level shifting applications.

Compared with TPS61096ADSST, TPS610981DSER offers identical package and quiescent current but sacrifices output adjustability and level shifting - making it unsuitable for variable-bias or integrated-signal-translation roles. MAX17222ETA+T provides comparable voltage range in a smaller package but lacks on-chip level shifters and has lower current capability, increasing system-level component count and limiting high-drive applications.

Availability

TPS61096ADSST is available at Aetrix Electronics and suitable for stylus power management, memory LCD bias generation, sensor signal conditioning, and RF MEMS relay driver applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS61096ADSST 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 and battery-optimized power solutions.

The TPS61096A product line was designed specifically for ultra-low-power, high-voltage bias generation in portable human-interface devices - emphasizing minimal quiescent current, integrated functionality, and robust operation across wide temperature and load ranges.

FAQ

What is the minimum input voltage required for TPS61096ADSST to start switching?

The TPS61096ADSST features an undervoltage lockout (UVLO) with a rising threshold of 1.5 V (typical) and 0.3 V hysteresis. Therefore, the device begins switching only when VIN rises above 1.5 V and remains enabled until VIN drops below 1.2 V. Below 1.5 V, the TPS61096ADSST remains in shutdown regardless of EN pin state.

How does the ILIM pin affect inductor selection for TPS61096ADSST?

The ILIM pin selects between 0.25 A (low) and 0.5 A (high) peak inductor current limits. With ILIM = low, a smaller inductor (e.g., 2.2 µH) suffices for light-load applications, reducing size and cost. With ILIM = high, a higher saturation-current inductor (≥1.7 A ISAT) is required to avoid saturation at 0.5 A peak - such as the DFE201610E-2R2M=P2 recommended in the TPS61096ADSST datasheet.

Can TPS61096ADSST drive capacitive loads directly on its HVO1/HVO2 pins?

Yes - the TPS61096ADSST level shifter outputs are rated for up to 10 pF capacitive load while maintaining 200 kHz pulse capability and ≤500 ns propagation delay. For loads exceeding 10 pF, external buffer amplification is recommended to preserve timing integrity and output voltage swing (VOH = VOUT – 0.1 V, VOL = 0.1 V at specified currents).

What is the role of the VOSNS pin in TPS61096ADSST output voltage accuracy?

The VOSNS pin enables high-accuracy output sensing by forming a second feedback path with FB, allowing compensation for resistive divider errors and PCB trace losses. When used, VOUT is regulated based on the voltage difference between VOSNS and FB, improving total output accuracy to ±1% over temperature and line/load - critical for precision bias applications like memory LCDs.

Does TPS61096ADSST require external compensation components?

No - the TPS61096ADSST uses a PFM peak-current control scheme operating inherently in discontinuous conduction mode (DCM), which provides unconditional stability across all input voltages, output voltages, and load conditions. No external compensation network (e.g., RC networks on FB) is needed, simplifying design and reducing bill-of-materials.