Texas Instruments TLV4111IDGN

Overview

TLV4111IDGN from Texas Instruments is a single-channel rail-to-rail output operational amplifier optimized for high-current buffer and coil driver applications, delivering >300 mA continuous output current at 5 V, with 2.7 MHz unity-gain bandwidth, 1.5 V/µs slew rate, and operation across −40°C to 125°C industrial temperature range.

For engineers reviewing the TLV4111IDGN datasheet, TLV4111IDGN pinout, TLV4111IDGN application, or TLV4111IDGN equivalent, this page provides verified package mapping (MSOP-8 PowerPAD), thermal performance data (θ_JA = 52.7°C/W), output voltage swing vs. load curves, shutdown behavior (no SHDN pin), and design-critical thermal layout guidance for high-current operation.

Technical Context

The TLV4111IDGN employs a proprietary high-output-drive output stage enabling ±320 mA sourcing/sinking capability at 5 V while maintaining rail-to-rail output swing down to 0.1 V from each rail under 100 mA load. Its internal architecture supports stable operation with capacitive loads up to 1 nF without external compensation, and includes robust ESD protection (±2 kV HBM).

Unlike TLV4110/TLV4113 variants, TLV4111IDGN lacks a shutdown pin - confirmed by pinout diagrams and family table - making it suitable for always-on high-current analog stages where power sequencing simplicity is prioritized over standby current minimization.

Key Specifications

Pinout & Package

The TLV4111IDGN is housed in an 8-pin MSOP PowerPAD™ package with exposed thermal pad on underside - electrically isolated, must be soldered to PCB ground plane for thermal management (θ_JA = 52.7°C/W, θ_JC = 4.7°C/W). This package enables >2.3 W continuous power dissipation when properly mounted.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-output-drive op-amp applications.

Compared with TLC071CDR and OPA547TP, TLV4111IDGN uniquely balances 300+ mA drive, MSOP-8 surface-mount compatibility, and ultra-low 700 µA quiescent current - making it optimal for space-constrained, thermally demanding, battery-aware industrial interfaces where SOIC thermal limits or TO-220 mechanical fit are prohibitive.

Availability

TLV4111IDGN is available at Aetrix Electronics and suitable for industrial automation, automotive body control modules, and portable test equipment requiring stable component supply with guaranteed −40°C to 125°C operation and long-term manufacturability.

Supply support for TLV4111IDGN 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 precision amplifiers and power-efficient signal conditioning.

The TLV411x product line was engineered specifically for high-current analog interface applications - bridging the gap between standard op-amps and discrete power stages in space- and thermal-constrained systems.

FAQ

Does TLV4111IDGN include a shutdown pin?

No, TLV4111IDGN does not feature a shutdown pin. Unlike TLV4110 and TLV4113 variants, the TLV4111IDGN pinout explicitly shows pins 1, 5, and 8 as NC (no internal connection), and the family table confirms "-" for shutdown capability. Therefore, TLV4111IDGN operates continuously when powered and cannot be placed into low-quiescent-current sleep mode. For shutdown functionality, consider TLV4110IDGN or TLV4113IDGQ instead.

What is the maximum continuous output current for TLV4111IDGN at 125°C ambient?

At T_A = 125°C, the maximum continuous output current for TLV4111IDGN is 110 mA per channel, as specified in the Absolute Maximum Ratings table under "Continuous /RMS output current, I_O (each output of amplifier): T_J ≤ 150°C". This limit arises from thermal constraints - the MSOP PowerPAD package's θ_JA = 52.7°C/W and maximum junction temperature of 150°C dictate that power dissipation must stay below 474.4 mW, constraining output current under worst-case conditions.

Can TLV4111IDGN drive a 1000 pF capacitive load stably?

No - TLV4111IDGN is not stable with 1000 pF (1 nF) capacitive loads without external compensation. The datasheet explicitly states: "for capacitive loads of greater than 1 nF, it is recommended that a resistor be placed in series (R_NULL) with the output". Figure 17 confirms phase margin drops below 45° at C_L = 1 nF. To maintain stability, add a 10–20 Ω R_NULL in series with the output when driving ≥1 nF loads, as shown in Figure 27(a).

What is the purpose of the exposed thermal pad on the TLV4111IDGN package?

The exposed thermal pad on the TLV4111IDGN (MSOP-8 PowerPAD) serves as the primary thermal conduction path from the silicon die to the PCB. It is electrically isolated but must be soldered to a dedicated GND-connected copper area with ≥5 thermal vias (13-mil diameter) to achieve the rated θ_JA = 52.7°C/W. Without proper soldering and grounding of this pad, thermal resistance increases sharply, risking junction overheating and premature failure during 300+ mA operation - as detailed in Application Note SLMA002 and Section 14 of the TLV411x datasheet.

How does the input common-mode voltage range of TLV4111IDGN compare to supply rails?

The TLV4111IDGN features a rail-to-rail input common-mode voltage range extending from 0 V to V_DD − 1.5 V, as specified in Recommended Operating Conditions. This means at V_DD = 5 V, inputs operate from 0 V to 3.5 V - not full rail-to-rail on the high side. However, its output is truly rail-to-rail (0 V to V_DD). For applications requiring full input range, external level-shifting or a different amplifier (e.g., TLV9061) may be needed, but TLV4111IDGN's input range is sufficient for most single-supply sensor buffering where signals stay below V_DD − 1.5 V.