Texas Instruments TPS61006DGS

Overview

TPS61006DGS from Texas Instruments is a fixed-output 3.3 V, non-synchronous boost converter for single- or dual-cell battery systems. It delivers up to 100 mA from 0.8 V input, starts up into full load at 0.9 V, operates with ≥90% peak efficiency, and integrates low-battery detection (LBI/LBO) for portable medical devices and wireless headsets.

For engineers reviewing the TPS61006DGS datasheet, TPS61006DGS pinout, TPS61006DGS application, or TPS61006DGS equivalent, key selection criteria include minimum startup voltage (0.9 V), output current capability at ultra-low input (100 mA @ 0.8 V), integrated antiringing switch for EMI reduction, and MSOP-10 package compatibility with space-constrained battery-powered designs.

Technical Context

The TPS61006DGS uses a fixed-frequency (500 kHz nominal), current-mode PWM controller that transitions to power-save mode below light-load thresholds to sustain high efficiency across 1 µA–100 mA output range. Its internal 1.1 A switch current limit and integrated antiringing circuit actively clamp SW-node ringing during discontinuous conduction mode.

It implements undervoltage lockout (UVLO ≈0.7 V), enables shutdown via EN pin (I_EN < 1 µA), and provides programmable low-battery warning via LBI threshold (500 mV ±15 mV) with 10 mV hysteresis - all functional only when EN is high.

Key Specifications

Pinout & Package

TPS61006DGS 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 1 is EN; pin 10 is LBO. NC/FBGND (pin 8) is not connected on TPS61006DGS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61006DGS, TPS61022RGET offers 12× higher current and 4.4× higher frequency but omits battery monitoring; MAX1703EUB+ matches output specs and current rating but requires external low-battery circuitry and has distinct layout requirements due to different pin mapping and compensation topology.

Availability

TPS61006DGS is available at Aetrix Electronics and suitable for wireless headsets, portable medical diagnostics, and remote controls requiring stable component supply across extended production lifecycles.

Supply support for TPS61006DGS 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 specializing in analog, embedded processing, and connectivity technologies with broad industrial and consumer design expertise.

The TPS6100x product line was designed specifically for ultra-low-input-voltage, battery-powered portable electronics - prioritizing startup capability below 1 V, integrated protection features, and minimal external component count in micro-packages.

FAQ

What is the minimum input voltage required for TPS61006DGS to start switching?

The TPS61006DGS starts switching into a full 33 Ω load (100 mA) at 0.9 V input voltage across the full temperature range. Once started, it continues operating down to 0.8 V input. Below ~0.7 V, undervoltage lockout disables the device. This behavior is confirmed in Section 7.5 of the SLVS279D datasheet under "Input voltage for start up" and "Input voltage once started".

Does TPS61006DGS require external feedback resistors to set its output voltage?

No, TPS61006DGS does not require external feedback resistors. It is a fixed-output variant with an internal resistor divider configured for 3.3 V. The FB pin (Pin 3) must be left unconnected - connecting it would disrupt regulation. This is explicitly stated in the Pin Functions table (Section 6) and Available Options table (Section 5) of the TPS61006DGS datasheet.

How does the low-battery detection function work on TPS61006DGS?

The TPS61006DGS uses LBI (Pin 9) to sense a scaled battery voltage and LBO (Pin 10) as an open-drain output. When the voltage at LBI falls below 500 mV ±15 mV, LBO is pulled low. A pull-up resistor to VOUT is required on LBO. If unused, LBI must be tied to GND or VBAT - never left floating. This function is only active when EN is high.

What is the purpose of the COMP pin on TPS61006DGS, and what components are needed?

The COMP pin (Pin 2) is the error amplifier compensation node. It requires an external R-C-C network (typically one resistor and two capacitors) to stabilize the control loop and ensure phase margin >45° across load and input conditions. The exact values depend on inductor, output capacitor, and target transient response - design guidance is provided in Section 10.2.2.1 of the datasheet.

Can TPS61006DGS be used with a 3.3 V lithium coin cell?

Yes, TPS61006DGS supports input voltages up to 3.3 V per Absolute Maximum Ratings (Section 7.1), making it compatible with CR2032 and similar 3 V nominal coin cells. However, its primary design intent is ultra-low-voltage startup from 0.9 V - so while safe at 3.3 V, it delivers no efficiency or regulation advantage over higher-input boosters in that range. Use cases should prioritize its low-V_IN strength.