Texas Instruments TPS60301DGSRG4

Overview

TPS60301DGSRG4 from Texas Instruments is a dual-output, regulated charge pump DC-DC converter designed for ultra-low-voltage battery-powered systems. It accepts 0.9 V–1.8 V input (single alkaline/NiMH), delivers regulated 3-V ±4% at up to 20 mA on OUT2 and 2×VIN (up to 40 mA) on OUT1, and features integrated power-good supervision with open-drain PG output - enabling reliable power sequencing in hearing aids and portable medical sensors.

For engineers reviewing the TPS60301DGSRG4 datasheet, TPS60301DGSRG4 pinout, TPS60301DGSRG4 application, or TPS60301DGSRG4 equivalent, key selection criteria include its 3-V regulated output tolerance, sub-35 µA quiescent current, LinSkip mode for light-load efficiency, 10-pin VSSOP package footprint, and compatibility with five 1-µF ceramic capacitors only - critical for space-constrained, long-life battery designs.

Technical Context

The TPS60301DGSRG4 implements a two-stage switched-capacitor architecture: first stage doubles VIN to generate OUT1 (2×VIN), second stage quadruples and regulates to fixed 3-V output on OUT2. It automatically selects between 3× or 4× conversion modes based on input voltage to maintain regulation across 0.9 V–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 sustaining >90% peak efficiency. The open-drain power-good (PG) pin monitors OUT2 and asserts high when voltage reaches ≥98% of nominal 3 V - supporting controlled system startup and brownout detection.

Key Specifications

Pinout & Package

TPS60301DGSRG4 is housed in a micro-small 10-pin VSSOP (DGS) package measuring 3.05 mm × 4.98 mm, optimized for high-density PCB layouts in portable medical and instrumentation applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output charge pump applications.

Compared with TPS60301DGSRG4, TPS60300DGSR provides 3.3-V output for digital logic compatibility but risks overvoltage in 3-V analog paths, while TPS60303DGSR simplifies power-good interfacing with push-pull output but removes the option to tie PG to higher-voltage rails - making TPS60301DGSRG4 optimal for cost-sensitive, space-constrained 3-V analog systems requiring flexible PG routing.

Availability

TPS60301DGSRG4 is available at Aetrix Electronics and suitable for portable medical diagnostics, hearing instrument manufacturing, and MSP430-based metering applications requiring stable component supply with guaranteed long-term availability.

Supply support for TPS60301DGSRG4 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 battery-efficient power conversion.

The TPS6030x family was engineered specifically for space-critical, single-cell battery applications - delivering regulated dual outputs with ultra-low quiescent current and no-inductor simplicity for hearing aids, portable instruments, and ultra-low-power IoT endpoints.

FAQ

What is the regulated output voltage of the TPS60301DGSRG4?

The TPS60301DGSRG4 provides a precisely regulated 3.0-V output on OUT2 with ±4% tolerance (2.88 V to 3.12 V) across 0.9 V–1.8 V input and 0–20 mA load. This specification is confirmed in Section 8.5 of the SLVS302B datasheet under V_OUT(OUT2) for TPS60301/TPS60303 variants, and applies directly to the TPS60301DGSRG4 device marking ALG.

Does the TPS60301DGSRG4 require external inductors?

No, the TPS60301DGSRG4 is a switched-capacitor charge pump and requires zero inductors. It operates using only five external 1-µF ceramic capacitors - one input (C_IN), two flying (C_1F, C_2F), and two output (C_OUT1, C_OUT2) - as specified in the Features section and Typical Application schematic of the SLVS302B datasheet.

How does the power-good (PG) output function on the TPS60301DGSRG4?

The TPS60301DGSRG4 features an open-drain PG output that goes high when OUT2 reaches ≥98% of its nominal 3-V value (≥2.94 V). It requires an external pull-up resistor (100 kΩ to 1 MΩ) to OUT1 or OUT2. During shutdown or undervoltage, PG is actively pulled low - enabling reliable power sequencing in systems like hearing aids and MSP430-based meters.

What is the maximum output current capability of the TPS60301DGSRG4 on OUT1 and OUT2?

TPS60301DGSRG4 delivers up to 40 mA on OUT1 (2×VIN) when OUT2 is unloaded, and up to 20 mA on OUT2 (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 - e.g., 20 mA on OUT1 and 10 mA on OUT2 is valid per Section 1 of the datasheet.

Is the TPS60301DGSRG4 compatible with alkaline, NiMH, and NiCd single-cell batteries?

Yes, the TPS60301DGSRG4 is explicitly designed for single-cell battery inputs with 0.9 V–1.8 V operating range - covering the full discharge curve of alkaline (1.5 V → 0.9 V), NiMH (1.2 V → 0.9 V), and NiCd (1.2 V → 0.9 V) chemistries. Its automatic 3×/4× mode selection maintains regulation throughout, as documented in the Description and Recommended Operating Conditions sections.