Texas Instruments TPS61007DGSG4

Overview

TPS61007DGSG4 from Texas Instruments is a programmable-output boost converter IC for single- or dual-cell battery systems, delivering up to 250 mA output current from 1.8 V input, supporting 1.5–3.3 V adjustable output voltage, featuring integrated low-battery detection (LBI/LBO), antiringing switch, and power-save mode for high efficiency down to light loads. It serves as the main voltage rail generator in portable medical diagnostics and wireless headsets.

For engineers reviewing the TPS61007DGSG4 datasheet, TPS61007DGSG4 pinout, TPS61007DGSG4 application, or TPS61007DGSG4 equivalent, key selection criteria include start-up capability at 0.8 V, 500 kHz fixed-frequency PWM control with discontinuous-mode antiringing, FBGND pin for feedback ground isolation, and compatibility with 33 µH inductors and ceramic output capacitors.

Technical Context

The TPS61007DGSG4 implements a current-mode, fixed-frequency (360–840 kHz, typ. 500 kHz) PWM controller with pulse-skipping power-save mode below ~10 mA load. Its internal 500 mV reference feeds an error amplifier whose COMP pin requires external R-C-C compensation for loop stability.

It integrates a dedicated FBGND pin (Pin 8) to eliminate ground shift in the feedback divider-distinguishing it from other TPS6100x variants-and uses an internal antiringing comparator to clamp SW-node ringing to VBAT during DCM, reducing EMI without external snubbers.

Key Specifications

Pinout & Package

TPS61007DGSG4 is housed in a 10-pin VSSOP (DGS) package, 3.00 mm × 3.00 mm body size, with exposed thermal pad (not electrically connected). Pin 8 is NC/FBGND - a dedicated ground for the feedback resistor divider, critical for output accuracy in adjustable configurations.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar boost converter applications.

Compared with TPS61006DGSG4, the TPS61007DGSG4 provides design flexibility via adjustable output and superior feedback accuracy; versus TPS61200DCKR, it offers tighter integration for low-power battery monitoring but lower current capability - making TPS61007DGSG4 optimal for space-constrained, single-cell medical and audio devices.

Availability

TPS61007DGSG4 is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, remote controls, and pagers requiring stable component supply across long production lifecycles and battery-voltage-sensitive operation.

Supply support for TPS61007DGSG4 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-powered system solutions.

The TPS6100x product line was designed specifically for ultra-low-voltage, high-efficiency boost conversion in single- and dual-cell battery applications - prioritizing start-up robustness, EMI control, and integrated system supervision functions.

FAQ

What is the minimum input voltage required for TPS61007DGSG4 to start up and regulate?

The TPS61007DGSG4 starts up and regulates into full load at 0.8 V over the full –40°C to +85°C temperature range. This enables reliable operation from deeply discharged single-cell alkaline or NiMH batteries. The device remains functional down to 0.8 V input during steady-state operation, with undervoltage lockout disabling the part only below ~0.7 V. Startup behavior is verified with 33 Ω load (100 mA at 3.3 V) per TI SLVS279D test conditions.

How does the FBGND pin on TPS61007DGSG4 improve output voltage accuracy?

The FBGND pin (Pin 8) on TPS61007DGSG4 provides a dedicated ground connection for the external feedback resistor divider, isolating it from power-ground noise and voltage drops caused by high-switching currents. This eliminates ground shift errors that degrade regulation accuracy in standard FB-only configurations. As confirmed in the datasheet's Feature Description section, this architecture enables ±1.5% typical output accuracy across load and temperature - a key differentiator versus TPS61000/TPS61006.

Can TPS61007DGSG4 be used without connecting the LBI and LBO pins?

Yes, TPS61007DGSG4 can be used without LBI/LBO functionality. Per the Pin Functions table, connect LBI to GND or VBAT (do not leave floating), and leave LBO unconnected. The low-battery comparator is disabled when EN is low, and the internal circuit draws negligible current when unused. This configuration preserves all boost regulation features while simplifying the schematic for applications without battery monitoring requirements.

What inductor value and type are recommended for TPS61007DGSG4 in a 3.3 V output design?

TI recommends a 33 µH shielded power inductor (e.g., Coilcraft DO3308P-333 or Sumida CD43) for TPS61007DGSG4 with 3.3 V output. The datasheet specifies 10–33 µH as the valid range, with 33 µH optimizing efficiency and ripple at 100 mA load. Inductor saturation current must exceed the TPS61007DGSG4's 1.1 A switch current limit to avoid core saturation and potential device damage during peak pulses.

Does TPS61007DGSG4 require external compensation components, and where are they connected?

Yes, TPS61007DGSG4 requires external compensation: a series RC network plus a capacitor from COMP (Pin 2) to GND. This R-C-C network sets the control-loop bandwidth and phase margin for stable regulation across input/output/load variations. The datasheet's Application section and Figure 17 provide design equations and example values (e.g., 10 kΩ, 100 pF, 33 nF); omitting or mis-sizing these components causes oscillation or poor transient response.