Texas Instruments LM10010SDX/NOPB

Overview

LM10010SDX/NOPB from Texas Instruments is a precision 6-bit current DAC voltage identification (VID) programmer for point-of-load DC/DC regulators, operating from 3V to 5.5V supply, delivering 0–59.2 µA output current with ±2% full-scale accuracy over −40°C to +125°C, and featuring precision enable (1.34 V threshold) and UVLO (2.65 V rising) for controlled startup in DSP power sequencing.

For engineers reviewing the LM10010SDX/NOPB datasheet, LM10010SDX/NOPB pinout, LM10010SDX/NOPB application, or LM10010SDX/NOPB equivalent, this device serves as a digitally programmable feedback current source for adaptive core voltage control in multi-rail power systems-particularly where VID interface compatibility, thermal stability of DAC gain error, and low-temperature drift of IDAC offset are critical selection criteria.

Technical Context

The LM10010SDX/NOPB implements a bandgap-referenced 6-bit current DAC with trimmed resistor ladder, generating a precise, temperature-stable output current inversely proportional to the 6-bit VID word (0–63). Its VID interface uses three data lines (VIDA–VIDC) and one strobe (VIDS) to latch upper/lower nibbles via edge-triggered capture with 3.4 µs deglitch filtering.

Internally, the device integrates precision analog comparators for EN and UVLO functions, both with 100 mV hysteresis; the EN pin supports external resistor-divider programming for custom under-voltage turn-on, while UVLO ensures operation only above 2.65 V to prevent erratic behavior during rail ramp-up.

Key Specifications

Pinout & Package

LM10010SDX/NOPB is housed in a thermally enhanced WSON-10 package (3 mm × 3 mm, 0.5 mm pitch) with exposed die attach pad (DAP) for improved thermal dissipation. The DAP must be connected to system ground plane per JEDEC 4-layer board guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar VID voltage programming applications.

Compared with LM10011SDX/NOPB and TPS51200DRCR, LM10010SDX/NOPB delivers the most compact, lowest-quiescent solution for pure parallel VID control-ideal when MCU GPIO availability is constrained and serial interface overhead is unnecessary, while retaining full thermal and accuracy specs across industrial temperature range.

Availability

LM10010SDX/NOPB is available at Aetrix Electronics and suitable for broadband communications infrastructure, DSP-based embedded systems, and portable instrumentation requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.

Supply support for LM10010SDX/NOPB 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 ICs, with decades of expertise in precision voltage regulation and power system design.

The LM10010SDX/NOPB belongs to TI's Point-of-Load (POL) voltage identification product line, engineered specifically to simplify adaptive core voltage control in high-performance digital loads-including DSPs, FPGAs, and ASICs-by replacing complex resistor networks with digitally programmable current injection.

FAQ

What is the primary function of the LM10010SDX/NOPB in a power system?

The LM10010SDX/NOPB is a precision 6-bit current DAC that injects a programmable 0–59.2 µA current into the feedback node of an external DC/DC regulator to dynamically adjust its output voltage. It serves as a VID voltage programmer, enabling digital control of core supply rails in DSPs, FPGAs, and other digital loads without modifying the regulator's resistor network. This function is central to the LM10010SDX/NOPB's role in adaptive power management.

How does the LM10010SDX/NOPB handle power-up sequencing and reliability?

The LM10010SDX/NOPB incorporates dual protection mechanisms: a precision enable (EN) pin with 1.34 V threshold and 100 mV hysteresis, and an internal under-voltage lockout (UVLO) that activates below 2.65 V with 200 mV hysteresis. Both features ensure the device remains inactive until stable supply is present, preventing erroneous VID updates. At startup, LM10010SDX/NOPB defaults to code 46d (16 µA), providing a known, trimmed output before any host communication occurs.

Can the LM10010SDX/NOPB be used with regulators other than the LM21215A-1 referenced in the datasheet?

Yes, the LM10010SDX/NOPB is designed for universal use with any adjustable-point-of-load regulator featuring a resistor-divider feedback network (e.g., TPS54620, RT8205A, MP2315). Its current-output architecture is regulator-agnostic-the key requirement is that the regulator's feedback node presents sufficient impedance for the LM10010SDX/NOPB's IDAC_OUT to modulate VOUT predictably. Application Note SNVS717C confirms compatibility across multiple TI and third-party buck controllers.

What is the significance of the WSON-10 package and DAP in thermal management of the LM10010SDX/NOPB?

The LM10010SDX/NOPB's WSON-10 package (3 mm × 3 mm) includes an exposed die attach pad (DAP) that must be soldered to the PCB ground plane. This connection reduces junction-to-ambient thermal resistance to 40°C/W (per JEDEC 4-layer board), critical for maintaining DAC accuracy and long-term stability under continuous operation. Without proper DAP grounding, thermal drift of gain error and offset current increases significantly-directly impacting LM10010SDX/NOPB's output precision.

Does the LM10010SDX/NOPB require external passive components for basic operation?

Yes, the LM10010SDX/NOPB requires a 1 nF ceramic capacitor (CVDD) placed directly between VDD and GND pins to suppress supply transients, as specified in the PCB layout guidelines. No external resistors or timing components are needed for VID interface operation-its deglitch filters and internal bandgap eliminate reliance on external RC networks. All functional timing (e.g., VID capture, IDAC slew) is self-contained within the LM10010SDX/NOPB silicon.