Texas Instruments TPS60300DGSG4

Overview

TPS60300DGSG4 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–1.8 V input (e.g., one alkaline/NiMH cell), delivers regulated 3.3 V ±4% at up to 20 mA on OUT2 and 2×VIN at up to 40 mA on OUT1, and features open-drain power-good supervision - enabling reliable power sequencing in hearing aids and portable medical instruments.

For engineers reviewing the TPS60300DGSG4 datasheet, TPS60300DGSG4 pinout, TPS60300DGSG4 application, or TPS60300DGSG4 equivalent, key selection criteria include its 3.3-V regulated output voltage, 20-mA OUT2 load capability, <35 µA quiescent current, LinSkip mode for light-load efficiency, and micro-small 10-pin VSSOP package with no inductor requirement.

Technical Context

The TPS60300DGSG4 implements a two-stage switched-capacitor architecture: first stage doubles VIN to generate OUT1 (2×VIN), second stage quadruples input to regulate OUT2 at 3.3 V ±4%. It automatically selects between 3× or 4× conversion modes depending on input voltage to maintain regulation across 0.9 V–1.8 V.

Its LinSkip operating mode transitions seamlessly between pulse-skipping (for ultra-low IQ <35 µA at light loads) and constant-frequency linear-regulation (for low-noise performance above ~7.5 mA). The open-drain PG pin monitors OUT2 and asserts high when voltage reaches ≥98% of nominal 3.3 V - supporting safe power-up sequencing without external components.

Key Specifications

Pinout & Package

TPS60300DGSG4 is housed in a 10-pin Very Thin Shrink Small-Outline Package (VSSOP), measuring 3.05 mm × 4.98 mm with 0.5-mm lead pitch. This thermally enhanced, lead-free package supports automated assembly and meets JEDEC moisture sensitivity level MSL-2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS60300DGSG4, TPS60302DGSG4 offers identical regulation and efficiency but simplifies PG interface via push-pull drive, while MAX680ESA+ lacks OUT1, PG, and LinSkip - making it unsuitable for battery-powered systems requiring low-noise, sequenced, dual-rail power.

Availability

TPS60300DGSG4 is available at Aetrix Electronics and suitable for hearing instruments, portable smart card readers, and MSP430-based metering applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS60300DGSG4 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS6030x family was engineered specifically for ultra-low-power, space-critical battery-powered applications - targeting hearing aids, portable medical devices, and energy-harvesting sensors where size, efficiency, and battery longevity are paramount.

FAQ

What is the regulated output voltage of the TPS60300DGSG4?

The TPS60300DGSG4 provides a regulated 3.3-V output on OUT2 with ±4% tolerance across 0.9 V–1.8 V input and 0–20 mA load. This is confirmed in Section 8.5 of the SLVS302B datasheet, where VOUT(OUT2) is specified as 3.17 V to 3.43 V under nominal conditions. OUT1 delivers unregulated 2×VIN, ranging from 1.8 V to 3.6 V depending on input.

Does the TPS60300DGSG4 require external inductors?

No, the TPS60300DGSG4 uses a switched-capacitor (charge pump) topology and requires only five 1-µF ceramic capacitors - no inductors. This is explicitly stated in the Features section ("No Inductors Required") and Typical Application Schematic (Figure 3) of the SLVS302B datasheet. The absence of magnetics reduces EMI, PCB area, and bill-of-materials cost.

How does the power-good (PG) function work on the TPS60300DGSG4?

The TPS60300DGSG4 features an open-drain PG output that goes high when OUT2 reaches ≥98% of 3.3 V (≥3.23 V). It remains low during startup, shutdown, or if OUT2 falls out of regulation. As noted in Section 9.3.1, an external pull-up resistor (100 kΩ–1 MΩ) to OUT1 or OUT2 is mandatory. PG is inactive (low) in shutdown mode.

What is the minimum input voltage required for the TPS60300DGSG4 to deliver 20 mA on OUT2?

The TPS60300DGSG4 requires ≥1.1 V input to deliver full 20 mA on OUT2, as specified in Section 8.5 (IOUT(OUT2) table). At 0.9 V input, maximum OUT2 current drops to 10 mA. This dependency is due to charge pump efficiency loss at low VIN; Figure 20 in the datasheet confirms the minimum input voltage vs. output current relationship.

Can the TPS60300DGSG4 operate with a single NiMH cell?

Yes, the TPS60300DGSG4 is explicitly rated for 0.9 V–1.8 V input, covering the full discharge range of a single NiMH cell (1.2 V nominal, down to ~0.9 V). Section 1 of the datasheet states it is "designed specifically for space-critical battery powered applications" including NiMH, and Figure 20 shows stable operation down to 0.9 V at reduced load.