Texas Instruments TPS781330220DRVR

Overview

TPS781330220DRVR from Texas Instruments is a 150mA ultralow-power LDO regulator with pin-selectable dual output voltages (3.3V HIGH / 2.2V LOW), 1µA quiescent current, 200mV dropout at 150mA, and stable operation with 1.0µF ceramic output capacitance. It serves as a system power rail controller in battery-powered microcontroller applications requiring dynamic voltage scaling.

For engineers reviewing the TPS781330220DRVR datasheet, TPS781330220DRVR pinout, TPS781330220DRVR application, or TPS781330220DRVR equivalent, key selection criteria include dual-level VSET toggle timing (≤800µs), ±3% output accuracy over load/line/temperature, thermal shutdown at +140°C/+160°C, CMOS-compatible EN pin, and compatibility with TI MSP430 sleep/wake sequencing.

Technical Context

The TPS781330220DRVR implements a factory-programmed EPROM-based voltage selection architecture that fixes VOUT(HIGH) = 3.3V and VOUT(LOW) = 2.2V, toggled via the VSET pin logic level. Its internal bandgap reference (1.216V typ) feeds a precision error amplifier driving a low-RDS(on) pass transistor.

It integrates active pull-down circuitry for fast high-to-low transitions, thermal shutdown with hysteresis (+140°C reset, +160°C trip), and current limiting (150–400mA). The device operates across –40°C to +125°C junction temperature with no external components required beyond 1.0µF input/output ceramics.

Key Specifications

Pinout & Package

TPS781330220DRVR uses the 2mm × 2mm SON-6 package (DRV) with exposed thermal pad. The package is RoHS-compliant, moisture-sensitive level 2a, and requires solder reflow per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS781330220DDCR, the TPS781330220DRVR offers superior thermal performance (RθJA = 65°C/W vs. 200°C/W) enabling full 150mA operation up to +85°C ambient; versus TPS780330220DRVR, it trades 500nA IQ for broader input voltage range (2.2V–5.5V vs. 2.2V–6.0V) and faster enable response.

Availability

TPS781330220DRVR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical devices, industrial I/O modules, and battery-powered safety equipment requiring stable component supply and long-term lifecycle support.

Supply support for TPS781330220DRVR 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 connectivity technologies with over 50 years of power management innovation.

The TPS781 series was designed specifically for battery-powered systems needing ultralow-IQ regulation and hardware-controllable dual-voltage rails-targeting MSP430, CC26xx, and other ultra-low-power MCUs.

FAQ

What are the factory-programmed output voltages for the TPS781330220DRVR?

The TPS781330220DRVR has fixed factory-programmed output voltages: VOUT(HIGH) = 3.3V when VSET is driven low (<0.4V), and VOUT(LOW) = 2.2V when VSET is driven high (>1.2V). These values are permanently set via on-chip EPROM and cannot be altered in-circuit.

Can the TPS781330220DRVR operate with only a 1.0µF output capacitor?

Yes, the TPS781330220DRVR is explicitly designed to be stable with a minimum 1.0µF ceramic output capacitor, as confirmed in the datasheet's "Stable with a 1.0µF Ceramic Capacitor" feature and Figure 34 stability analysis. No additional ESR or capacitance is required.

What is the maximum continuous output current for the TPS781330220DRVR at +85°C ambient?

At +85°C ambient temperature with the DRV package mounted on a JEDEC High-K board, the TPS781330220DRVR supports 150mA continuous output current. Derating is not required up to this point due to its 65°C/W RθJA and thermal shutdown at +160°C junction temperature.

How does the VSET pin toggle between 3.3V and 2.2V outputs on the TPS781330220DRVR?

The VSET pin on the TPS781330220DRVR toggles output voltage via CMOS logic thresholds: driving VSET <0.4V selects 3.3V output; driving VSET >1.2V selects 2.2V output. Transition time is ≤800µs under 150mA load, with active pull-down ensuring fast high-to-low transitions even with no load.

Is the thermal pad on the TPS781330220DRVR package required to be connected to ground?

Yes, the exposed thermal pad on the TPS781330220DRVR's SON-6 package must be soldered to a PCB ground plane. The datasheet states "It is recommended that the SON package thermal pad be connected to ground" to achieve specified RθJA = 65°C/W and prevent thermal shutdown under 150mA load.