Texas Instruments TPS61000DGSR

Overview

TPS61000DGSR from Texas Instruments is an adjustable-output, non-synchronous boost converter IC designed for single- or dual-cell battery systems. It starts up into full load at 0.9 V, delivers ≥100 mA output current from 0.8-V input, and supports programmable output voltage from 1.5 V to 3.3 V. It operates in fixed-frequency PWM mode (500 kHz typical) with power-save mode for light-load efficiency and integrates antiringing circuitry to suppress SW-node ringing.

For engineers reviewing the TPS61000DGSR datasheet, TPS61000DGSR pinout, TPS61000DGSR application, or TPS61000DGSR equivalent, key selection criteria include minimum start-up voltage (0.9 V), adjustable feedback architecture (FB/NC/FBGND), low-quiescent-current operation (44 µA), and integrated low-battery detection (LBI/LBO) - all critical for ultra-low-voltage portable power design.

Technical Context

The TPS61000DGSR implements a current-mode PWM controller with fixed 500-kHz switching frequency and automatic transition to pulse-skipping power-save mode below ~10 mA load. Its internal current limit is 1.1 A (typical), and it uses integrated current sensing across the internal switch to enable cycle-by-cycle protection without external sense resistors.

It features undervoltage lockout (UVLO ≈0.7 V), a dedicated low-battery comparator with 500 mV ±15 mV threshold on LBI, and an antiringing switch that clamps SW-to-VBAT during discontinuous conduction to reduce EMI. The FB pin accepts external resistor dividers for output regulation, while NC/FBGND provides isolated ground reference only in TPS61007 - not used in TPS61000DGSR.

Key Specifications

Pinout & Package

TPS61000DGSR is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm, optimized for high-density portable PCB layouts. Pin functions are validated per TI SLVS279D Rev D datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61022RGET and MAX773ACPA+, the TPS61000DGSR uniquely combines 0.9-V start-up, adjustable 1.5–3.3-V output, integrated LBI/LBO, and VSSOP packaging - making it the sole fit for space-constrained, ultra-low-voltage portable designs requiring programmable rails and battery health awareness.

Availability

TPS61000DGSR is available at Aetrix Electronics and suitable for wireless headsets, portable medical sensors, and remote controls requiring stable component supply, long-term lifecycle support, and tape-and-reel delivery for SMT production.

Supply support for TPS61000DGSR 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 solutions, with decades of expertise in battery-powered system ICs.

The TPS6100x family was engineered specifically for ultra-low-input-voltage boost conversion in single/dual-cell portable electronics - prioritizing start-up reliability, light-load efficiency, and integrated battery supervision.

FAQ

What is the minimum input voltage required for TPS61000DGSR to start up under full load?

The TPS61000DGSR starts up into full load at 0.9 V across the full temperature range (–40°C to 85°C). This is verified per TI SLVS279D datasheet Section 7.5, where VI(start-up) = 0.9 V is specified for RL = 33 Ω. Below this, UVLO prevents operation to avoid instability. The TPS61000DGSR sustains regulation down to 0.8 V once started.

Can TPS61000DGSR generate a 2.8-V output, and how is it configured?

Yes, TPS61000DGSR supports 2.8-V output via its adjustable FB pin. Configure with resistor divider R1 (top) and R2 (bottom) between VOUT and GND, where VOUT = 0.5 V × (1 + R1/R2). For 2.8 V, use R1 = 460 kΩ and R2 = 100 kΩ (1% tolerance). The TPS61000DGSR's FB reference is 500 mV ±4%, ensuring ±6% total output accuracy over temperature and load.

Does TPS61000DGSR require an external compensation network, and where is it connected?

Yes, TPS61000DGSR requires external compensation on the COMP pin to stabilize its current-mode control loop. Connect a series RC network from COMP to GND, plus a capacitor from COMP to FB - values depend on inductor (33 µH typical) and output cap (22 µF). TI's TPS6100xEVM-156 design and SLVS279D Section 10.2.2.2 provide validated component values for stable 1.5–3.3-V operation.

How does the low-battery detection function work on TPS61000DGSR?

The TPS61000DGSR uses LBI and LBO pins for low-battery detection: apply a resistor divider from VBAT to GND to scale battery voltage to 500 mV at the desired trip point (e.g., 0.9 V battery → 500 mV at LBI). When LBI falls below 500 mV ±15 mV, LBO pulls low (open-drain). The TPS61000DGSR requires EN = high for LBI/LBO to operate; LBO must be pulled up to VOUT externally.

What package and reel quantity does the 'R' suffix indicate in TPS61000DGSR?

The 'R' suffix in TPS61000DGSR denotes tape-and-reel packaging for automated SMT assembly, with 2500 units per reel. The base package is 10-pin VSSOP (DGS), 3.00 mm × 3.00 mm body size. This matches TI's orderable addendum in SLVS279D and is distinct from tray or tube options - critical for high-volume manufacturing planning.