Texas Instruments TPS60300DGSRG4

Overview

TPS60300DGSRG4 from Texas Instruments is a dual-output, regulated charge pump DC-DC converter designed for space-constrained, single-cell battery-powered systems. It accepts 0.9 V to 1.8 V input (e.g., one alkaline/NiMH cell), delivers regulated 3.3 V at up to 20 mA on OUT2 and 2×VIN (up to ~3.6 V) at up to 40 mA on OUT1, and features an open-drain power-good output for sequencing in portable medical instruments and smart card readers.

For engineers reviewing the TPS60300DGSRG4 datasheet, TPS60300DGSRG4 pinout, TPS60300DGSRG4 application, or TPS60300DGSRG4 equivalent, key selection criteria include its 3.3-V regulated output tolerance (±4%), ultra-low quiescent current (<35 µA), shutdown isolation capability, LinSkip mode for light-load efficiency, and compatibility with five 1-µF ceramic capacitors-no inductors required.

Technical Context

The TPS60300DGSRG4 implements a two-stage switched-capacitor architecture: first stage doubles VIN to generate OUT1; second stage quadruples VIN (or regulates via feedback) to produce a stable 3.3-V OUT2. It automatically selects between 3× or 4× conversion modes based on input voltage to maintain regulation across 0.9–1.8 V.

Its LinSkip operating mode transitions seamlessly between pulse-skipping (for <7.5 mA loads) and constant-frequency linear regulation (for higher loads), minimizing output ripple while preserving efficiency. The open-drain PG output asserts high when OUT2 reaches ≥98% of nominal voltage and pulls low during shutdown or undervoltage.

Key Specifications

Pinout & Package

TPS60300DGSRG4 is housed in a micro-small 10-pin VSSOP (DGS) package measuring 3.05 mm × 4.98 mm, optimized for high-density portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS60300DGSRG4, TPS60302DGSR offers identical regulation and output current but replaces open-drain PG with push-pull drive-reducing BOM count and improving rise time-while MAX680ESA+ serves distinct 5-V applications without supervision or dual-rail flexibility.

Availability

TPS60300DGSRG4 is available at Aetrix Electronics and suitable for pagers, portable smart card readers, and hearing instruments requiring stable component supply, long battery life, and compact power management solutions.

Supply support for TPS60300DGSRG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TPS6030x product line was engineered specifically for space-critical, single-cell battery-powered applications-emphasizing ultra-low quiescent current, inductorless design, and integrated power supervision to replace discrete boost converters in portable medical and consumer devices.

FAQ

What is the regulated output voltage of the TPS60300DGSRG4?

The TPS60300DGSRG4 provides a regulated 3.3-V output on OUT2 with ±4% accuracy across input voltage (0.9–1.8 V), load (0–20 mA), and temperature (–40°C to +125°C). This specification is confirmed in the Electrical Characteristics table of the SLVS302B datasheet, where VOUT(OUT2) is specified as 3.17 V to 3.43 V under defined test conditions. The TPS60300DGSRG4 does not regulate OUT1-it delivers approximately 2×VIN.

Does the TPS60300DGSRG4 require external inductors?

No, the TPS60300DGSRG4 is an inductorless charge pump converter. It operates using only five external 1-µF ceramic capacitors: one input (CIN), two flying (C1F, C2F), and two output (COUT1, COUT2) capacitors. This eliminates magnetic components, reduces EMI, and saves PCB area-making it ideal for ultra-thin portable designs. The datasheet explicitly states "No Inductors Required" in the Features section.

What is the function of the PG pin on the TPS60300DGSRG4?

The PG (power-good) pin on the TPS60300DGSRG4 is an open-drain output that signals when the regulated 3.3-V OUT2 rail has reached ≥98% of nominal voltage. It pulls low during startup until regulation is achieved, remains high during normal operation, and goes low again during shutdown or undervoltage. An external pull-up resistor (100 kΩ–1 MΩ) to OUT1 or OUT2 is required. This feature enables safe power-up sequencing and system reset control.

What is the maximum output current capability of the TPS60300DGSRG4 on OUT1 and OUT2?

The TPS60300DGSRG4 delivers up to 40 mA on OUT1 (2×VIN, unregulated) when OUT2 is unloaded, and up to 20 mA on OUT2 (3.3-V regulated) when OUT1 is unloaded. When both outputs are loaded simultaneously, the total current drawn from the first charge-pump stage must not exceed 40 mA-for example, 20 mA on OUT1 and 10 mA on OUT2. These limits are specified in the Device Comparison Table and Electrical Characteristics sections of the SLVS302B datasheet.

How does the TPS60300DGSRG4 achieve high efficiency across a wide input voltage range?

The TPS60300DGSRG4 achieves up to 90% peak efficiency by automatically selecting between 3× or 4× charge-pump conversion modes depending on input voltage-ensuring optimal regulation from 0.9 V to 1.8 V. It also employs LinSkip mode, which switches between pulse-skipping (for light loads <7.5 mA) and constant-frequency linear regulation (for heavier loads), balancing efficiency and output noise. These mechanisms are detailed in Sections 9.1 and 9.3 of the SLVS302B datasheet.