Texas Instruments TPS60123PWPR

Overview

TPS60123PWPR from Texas Instruments is a regulated 3.3-V ±4% charge-pump DC/DC converter delivering up to 100 mA output current from a 1.8-V to 3.6-V input (e.g., two alkaline/NiMH cells), featuring power-good detection, 55-µA quiescent current, and no-inductor operation in a thermally enhanced 20-pin PowerPAD (PWP) package - used in portable medical devices like glucose meters.

For engineers reviewing the TPS60123PWPR datasheet, TPS60123PWPR pinout, TPS60123PWPR application, or TPS60123PWPR equivalent, key selection criteria include its 3.3-V regulated output with ±4% tolerance, 100-mA max continuous load, power-good open-drain output (PG), shutdown current ≤1 µA, and compatibility with ceramic flying/output capacitors (C1/C2 = 2.2 µF, CO = 22 µF).

Technical Context

The TPS60123PWPR implements adaptive mode switching between 1.5× and voltage-doubler conversion to maintain high efficiency across 1.8–3.6 V input range; it uses ACTIVE-CYCLE regulation - fixed-frequency switching at heavy loads and pulse-skip mode at light loads to minimize quiescent current.

It integrates a 1.21-V bandgap reference, error amplifier, oscillator, MOSFET charge-pump power stages, and a dedicated open-drain power-good (PG) comparator that asserts low when output falls below 90% of nominal 3.3 V; shutdown disables all circuitry except reference and PG comparator, reducing supply current to 0.05 µA.

Key Specifications

Pinout & Package

The TPS60123PWPR is housed in a 20-pin thermally enhanced PowerPAD TSSOP (PWP) package with exposed thermal pad for improved power dissipation. Pin functions are validated per SLVS257B Rev. August 2000.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar regulated charge-pump DC/DC converter applications.

Compared with TPS60121PWPR, the TPS60123PWPR trades 100-mA output headroom for tighter thermal management in the same PWP package; versus MAX680ESA+, it adds PG signaling, adaptive efficiency optimization, and superior light-load IQ - making it preferable for safety-critical or battery-life-sensitive designs.

Availability

TPS60123PWPR is available at Aetrix Electronics and suitable for portable medical devices, handheld instrumentation, PDAs, and MP3 audio players requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TPS60123PWPR 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 company headquartered in Dallas, Texas, designing analog ICs, embedded processors, and power management solutions for industrial, automotive, and personal electronics markets.

The TPS6012x product line was engineered specifically for ultra-compact, battery-powered systems needing regulated 3.3-V or 3.0-V rails without inductors - targeting glucose meters, handheld test equipment, and legacy portable computing devices.

FAQ

What output voltage does the TPS60123PWPR deliver, and is external feedback required?

The TPS60123PWPR delivers a fixed 3.3-V ±4% regulated output. No external feedback resistors are needed because the internal resistive divider and 1.21-V reference are factory-trimmed to set this voltage; FB pin is connected directly to OUT in standard operation. This simplifies design and improves regulation accuracy over temperature and load.

How does the power-good (PG) function work on the TPS60123PWPR?

The PG pin on the TPS60123PWPR is an open-drain output that pulls low when the output voltage falls below ≈90% of nominal (i.e., <2.97 V). It releases (high-impedance) when VO rises above that threshold. An external 100-kΩ–1-MΩ pullup resistor to OUT is required. PG remains inactive during startup for the first 500 µs and is high-impedance in shutdown.

What is the maximum continuous output current specification for the TPS60123PWPR?

The TPS60123PWPR is rated for a maximum continuous output current of 100 mA under recommended operating conditions (VI = 1.8–3.6 V, TJ ≤ 125°C). This is confirmed in the "recommended operating conditions" table and electrical characteristics section of SLVS257B. Peak current capability is higher, but sustained operation above 100 mA may exceed thermal limits in the PWP package.

Does the TPS60123PWPR require inductors, and what external components are mandatory?

No, the TPS60123PWPR is an inductorless charge-pump converter. Four mandatory external components are required: input capacitor CI (10 µF X7R ceramic), two flying capacitors C1 and C2 (2.2 µF X7R each), and output capacitor CO (22 µF X7R). All must be low-ESR ceramic types to ensure stability, efficiency, and low ripple per TI's application guidance.

What is the shutdown current of the TPS60123PWPR, and how is shutdown activated?

The TPS60123PWPR draws ≤1 µA (typical 0.05 µA) supply current in shutdown mode. Shutdown is activated by pulling the ENABLE pin low (VIL ≤ 0.3 × VI). During shutdown, the output is disconnected from the input, leakage current from OUT is ≤1 µA, and all switching circuitry, oscillator, and control logic are disabled - preserving battery life in standby.