Texas Instruments TPS61007DGS

Overview

TPS61007DGS from Texas Instruments is a non-synchronous boost converter IC designed for single- or dual-cell battery systems, delivering adjustable 1.5 V to 3.3 V output from as low as 0.8 V input, supporting ≥100 mA output current at 0.8 V supply, featuring integrated low-battery detection (LBI/LBO), antiringing switch, and power-save mode for high efficiency down to light loads - used in portable medical diagnostics and wireless headsets.

For engineers reviewing the TPS61007DGS datasheet, TPS61007DGS pinout, TPS61007DGS application, or TPS61007DGS equivalent, key selection criteria include start-up capability at 0.8 V, programmable output voltage range, 500 kHz fixed-frequency PWM control with pulse-skipping at light load, integrated LBI comparator with 500 mV threshold, and MSOP-10 package compatibility with space-constrained handheld designs.

Technical Context

The TPS61007DGS implements current-mode PWM control with a nominal 500 kHz oscillator frequency and transitions into power-save mode below discontinuous conduction threshold to maintain >85% efficiency at 1 mA load. Its internal antiringing switch clamps SW-node ringing by monitoring SW–VOUT voltage, suppressing EMI without external snubbers.

It integrates a precision 500 mV ±15 mV LBI reference and dedicated FBGND pin to eliminate ground-shift error in feedback dividers - distinguishing it from earlier TPS61000 family members. The device supports full-load start-up at 0.8 V over –40°C to 85°C and maintains regulation with input as low as 0.8 V during operation.

Key Specifications

Pinout & Package

TPS61007DGS 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 return for the feedback resistor divider, eliminating ground-path error that affects 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 TPS61006DGS, the TPS61007DGS adds design flexibility through output adjustability and superior feedback accuracy, while TPS61200DRCR offers higher current capability and synchronous operation at the cost of increased external component count and different footprint.

Availability

TPS61007DGS is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, remote controls, and MP3 players requiring stable component supply across long production lifecycles and varying battery chemistries.

Supply support for TPS61007DGS 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 and embedded processing technologies, with decades of expertise in power management ICs for battery-operated systems.

The TPS6100x family was engineered specifically for ultra-low-voltage battery-powered applications - prioritizing start-up reliability, efficiency across wide load ranges, and integrated system supervision functions like low-battery detection.

FAQ

What is the minimum input voltage required for TPS61007DGS to start up under full load?

The TPS61007DGS guarantees full-load start-up at 0.8 V across the full operating temperature range (–40°C to 85°C), as verified in TI's SLVS279D datasheet Figure 10. This enables reliable operation from nearly depleted single-cell alkaline or NiMH batteries. Once started, the TPS61007DGS continues regulating down to 0.8 V input, making it ideal for maximizing battery utilization in portable equipment.

How does the FBGND pin on TPS61007DGS improve output voltage accuracy compared to TPS61000?

The FBGND pin on TPS61007DGS provides a dedicated, low-noise ground return for the external feedback resistor divider - eliminating voltage error caused by shared ground paths and IR drops in the main power ground. This architecture improves output accuracy to ±6% over temperature and load, whereas TPS61000 relies on shared GND and exhibits greater sensitivity to PCB layout and load-induced ground shifts.

Can TPS61007DGS be used with a 33 µH inductor and Schottky diode, and what are the key layout considerations?

Yes - the TPS61007DGS is validated with a 33 µH inductor (e.g., Coilcraft DO3308P-333) and Schottky diode (e.g., MBRM120LT3), as shown in the typical application schematic (Figure 17). Critical layout practices include placing the input capacitor (≥10 µF) within 3 mm of VBAT/GND, routing SW with minimal loop area, separating power and feedback grounds, and connecting FBGND directly to the feedback divider's ground node - all essential to achieve specified efficiency and stability.

What is the function of the antiringing switch in TPS61007DGS, and how does it reduce EMI?

The antiringing switch in TPS61007DGS actively clamps the SW node to VBAT when the inductor current reaches zero and the external Schottky diode becomes reverse-biased. By damping parasitic LC ringing at the switch node, it reduces high-frequency spectral content - lowering radiated EMI without requiring external snubbers or ferrite beads. This simplifies compliance testing and improves signal integrity in noise-sensitive RF or audio subsystems.

Does TPS61007DGS support automatic low-battery shutdown, or is external intervention required?

The TPS61007DGS does not automatically shut down on low battery; instead, it provides an open-drain LBO flag that goes low when the voltage on LBI falls below 500 mV ±15 mV. System firmware must monitor LBO and initiate graceful shutdown or alert. The device remains fully operational until VBAT drops below ≈0.7 V (UVLO threshold), at which point it disables switching - but this occurs after battery depletion has already compromised regulation.