Texas Instruments INA186A4IDCKR

Overview

INA186A4IDCKR from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 200 V/V fixed gain, –0.2 V to +40 V common-mode input range, ±50 µV max offset voltage, and 48 µA typical quiescent current. It enables precision microamp-level current monitoring in battery-powered consumer electronics using SC70-6 packaging.

For engineers reviewing the INA186A4IDCKR datasheet, INA186A4IDCKR pinout, INA186A4IDCKR application, or INA186A4IDCKR equivalent, this page delivers verified specifications, SC70 package terminal mapping, bidirectional sensing implementation guidance, and validated alternative options for portable power management designs.

Technical Context

The INA186A4IDCKR uses a capacitively coupled front-end architecture to achieve 120 dB minimum CMRR and reject DC common-mode shifts up to ±40 V independent of its 1.7–5.5 V supply. Its zero-drift topology maintains ±0.5 µV/°C max offset drift and ±1% max gain error across –40°C to +125°C.

With REF and ENABLE pins present in the DCK (SC70-6) package, it supports externally biased bidirectional current measurement and low-power shutdown mode drawing ≤100 nA. The 33 kHz bandwidth at 200 V/V gain ensures fast response to load transients in smartphone and notebook PC power rails.

Key Specifications

Pinout & Package

INA186A4IDCKR is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body), optimized for space-constrained portable PCBs. Pin functions are validated per TI SBOS318B Rev B (July 2021).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with INA186A4IDCKR, INA2181A4IDCKR simplifies unidirectional designs by integrating REF biasing but sacrifices enable-controlled shutdown, while MAX40056AUB+T offers lower cost at the expense of zero-drift performance and common-mode rejection in precision battery monitoring.

Availability

INA186A4IDCKR is available at Aetrix Electronics and suitable for smartphone battery management, notebook PC power monitoring, and USB-C charger designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for INA186A4IDCKR 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 signal conditioning and power management ICs.

The INA186 product line was designed specifically for ultra-low-power, high-accuracy current sensing in space- and energy-constrained portable electronics, emphasizing zero-drift stability, wide common-mode operation, and flexible bidirectional capability.

FAQ

What is the maximum common-mode voltage supported by the INA186A4IDCKR?

The INA186A4IDCKR supports a common-mode input voltage range from –0.2 V to +40 V, independent of its 1.7–5.5 V supply voltage. This allows direct high-side sensing on 24 V and 36 V rails without external level-shifting components. The specification is guaranteed across the full –40°C to +125°C operating temperature range per TI SBOS318B.

Does the INA186A4IDCKR support bidirectional current sensing?

Yes, the INA186A4IDCKR supports bidirectional current sensing via its dedicated REF pin, which accepts an external bias voltage (e.g., VS/2). When current flows in one direction, the output rises above REF; when reversed, it falls below REF. This capability is confirmed in the DCK package per Table 5-1 and Figure 7-3 of the official datasheet.

What is the typical quiescent current of the INA186A4IDCKR, and how does it change in shutdown mode?

The INA186A4IDCKR draws 48 µA typical quiescent current during normal operation. When the ENABLE pin is driven to GND, it enters shutdown mode and draws ≤100 nA total supply current. This low shutdown current is verified in Section 6.5 Electrical Characteristics (IQDIS parameter) and enables aggressive power cycling in battery-operated systems.

Can the INA186A4IDCKR operate from a 1.8 V supply?

Yes, the INA186A4IDCKR operates from a minimum supply voltage of 1.7 V, making it fully compatible with 1.8 V systems. At 1.8 V, it maintains rail-to-rail output swing (GND +1 mV to VS –40 mV), 33 kHz bandwidth, and specified accuracy - all validated in Section 6.3 Recommended Operating Conditions and Figure 6-4 of the datasheet.

What package type is used for the INA186A4IDCKR, and what are its key mechanical dimensions?

The INA186A4IDCKR uses the SC70-6 (DCK) package with nominal body dimensions of 2.00 mm × 1.25 mm and 0.95 mm height. This ultra-small outline is documented in Table 3-1 and Figure 5-1 of SBOS318B, and supports fine-pitch soldering for high-density portable PCB layouts.