Texas Instruments TPS61010DGSRG4

Overview

TPS61010DGSRG4 from Texas Instruments is a high-efficiency, adjustable-output synchronous boost converter designed for single- or dual-cell battery systems. It delivers up to 200 mA output current from 0.9 V input, supports programmable output voltage from 1.5 V to 3.3 V via external resistor divider, integrates synchronous rectification (no external Schottky required), and operates down to 0.8 V supply voltage - enabling ultra-low-voltage operation in portable medical diagnostics and wireless headsets.

For engineers reviewing the TPS61010DGSRG4 datasheet, TPS61010DGSRG4 pinout, TPS61010DGSRG4 application, or TPS61010DGSRG4 equivalent, key selection criteria include its 0.9 V startup capability, integrated autodischarge switch (300 Ω), 500 mV low-battery comparator threshold, 420–780 kHz fixed-frequency PWM control, and micro-small 10-pin QFN (3 mm × 3 mm) package with thermal pad.

Technical Context

The TPS61010DGSRG4 implements a fixed-frequency, current-mode PWM boost controller with pulse-by-pulse switch current limiting (1.07–1.13 A typical). Its synchronous rectifier uses integrated NMOS/PMOS switches (rDS(on) ≤ 0.51 Ω / 0.54 Ω at VO = 1.5 V) to eliminate external diode losses and achieve >95% peak efficiency.

It features automatic powersave mode at light load, where switching ceases until output voltage drops below regulation threshold, reducing quiescent current to <50 µA. The COMP pin requires external R-C-C compensation for loop stability, while ADEN enables/disables autodischarge of COUT during shutdown - discharging residual voltage to <0.4 V.

Key Specifications

Pinout & Package

TPS61010DGSRG4 is housed in a thermally enhanced 10-pin QFN package (3.00 mm × 3.00 mm, VSON-10) with exposed thermal pad for improved power dissipation (RθJA = 43.1°C/W, RθJB = 18.1°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61010DGSRG4, TPS61012DGSR offers plug-compatible fixed-voltage simplicity, while TPS61291DRVR provides higher performance in a smaller footprint at the cost of increased design validation effort for compensation and noise control.

Availability

TPS61010DGSRG4 is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, internet audio players, and remote controls requiring stable component supply with long-term lifecycle support.

Supply support for TPS61010DGSRG4 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 TPS6101x family was engineered specifically for ultra-low-voltage, high-efficiency boost conversion in space-constrained portable electronics - prioritizing startup reliability below 1 V and seamless integration of protection and monitoring functions.

FAQ

What is the minimum input voltage required for TPS61010DGSRG4 to start up?

The TPS61010DGSRG4 starts up with a minimum input voltage of 0.85 V under typical conditions (RL = 33 Ω) and 0.8 V with light loading (RL = 3 kΩ). This enables reliable operation from deeply discharged NiMH or alkaline cells. Startup behavior is validated across temperature and load, and the device remains functional down to 0.8 V once running - making TPS61010DGSRG4 ideal for energy-harvesting-adjacent or ultra-low-power portable applications.

How does the autodischarge function work on TPS61010DGSRG4, and how is it enabled?

The autodischarge function on TPS61010DGSRG4 activates an internal 300–400 Ω switch between VOUT and GND when EN is low and ADEN is tied to VBAT. This discharges output capacitance to <0.4 V within milliseconds, ensuring clean system reset for microcontrollers or memory. If ADEN is grounded, autodischarge is disabled - preserving VOUT for wake-on-event architectures. The feature is fully integrated; no external FET or control logic is needed.

Can TPS61010DGSRG4 be used with a fixed output voltage, or is it strictly adjustable?

TPS61010DGSRG4 is specifically the adjustable-output variant of the TPS6101x family - its FB pin must be connected to an external resistor divider to set VOUT between 1.5 V and 3.3 V. Fixed-output versions (e.g., TPS61012DGSR for 2.5 V) omit the FB connection and use internal dividers. Using TPS61010DGSRG4 without the FB network results in undefined or unregulated output; proper configuration is mandatory for stable operation.

What is the role of the COMP pin on TPS61010DGSRG4, and what happens if it's left unconnected?

The COMP pin on TPS61010DGSRG4 is the error amplifier output and requires an external R-C-C compensation network to stabilize the control loop. Leaving COMP unconnected causes instability, oscillation, or failure to regulate - as the internal transconductance amplifier lacks phase margin. TI recommends a 100 kΩ resistor, 10 nF capacitor, and 10 pF capacitor (RC = 100 kΩ, CC1 = 10 pF, CC2 = 10 nF) for typical 10 µH inductor designs. Proper compensation ensures robust line/load transient response.

Does TPS61010DGSRG4 include integrated protection features, and which ones are active during shutdown?

Yes, TPS61010DGSRG4 integrates undervoltage lockout (UVLO), cycle-by-cycle switch current limiting, antiringing control, and thermal shutdown. During shutdown (EN = GND), the internal power switches disconnect the load from VBAT, and the low-battery comparator is disabled - leaving LBO in high-impedance state. Autodischarge remains active only if ADEN = VBAT. Quiescent current drops to 1–3 µA, and no regulation or sensing functions operate - maximizing battery shelf life.