Texas Instruments LM10506TME/NOPB

Overview

LM10506TME/NOPB from Texas Instruments is a triple-buck + LDO power management unit (PMU) for SoC/ASIC systems in solid-state drives, delivering three independently programmable synchronous buck regulators (1.3 A / 400 mA / 600 mA) and a 3.2 V / 100 mA LDO via SPI interface. It supports dynamic voltage scaling, phase-shifted operation to reduce input ripple, and PFM/PWM mode switching.

For engineers reviewing the LM10506TME/NOPB datasheet, LM10506TME/NOPB pinout, LM10506TME/NOPB application, or LM10506TME/NOPB equivalent, key selection criteria include output current capability per rail, SPI-programmable voltage range (0.7–3.6 V), DSBGA-34 package thermal performance (R_θJA = 44.5°C/W), and integrated protection features including thermal shutdown and overvoltage lockout.

Technical Context

The LM10506TME/NOPB implements three voltage-mode synchronous buck regulators with 2 MHz switching frequency, 120° phase interleaving, and internal compensation optimized for 2.2 µH inductors and 4.7–100 µF ceramic output capacitors. Each buck includes high-side (135–260 mΩ) and low-side (85–190 mΩ) FETs, ±3% feedback accuracy, and soft-start timing of 0.1 ms.

It integrates a 3.2 V LDO with 60–100 mV dropout at 100 mA, 35–65 µV_RMS output noise (10 Hz–100 kHz), and 40–45 dB PSRR; plus an SPI-configurable comparator with 2.768 V/2.826 V hysteresis thresholds and IRQ interrupt output. Control logic supports STANDBY and RESET pins with internal pull-up/down resistors.

Key Specifications

Pinout & Package

LM10506TME/NOPB uses a 2.84 mm × 2.84 mm DSBGA-34 package with 0.5 mm pitch, designed for high-density PCB layouts and thermal efficiency (R_θJA = 44.5°C/W). Ground pads are distributed across B2, B3, D7, G1, G3, G5, G7, and A/B7 positions to minimize impedance and improve heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail PMU applications.

Compared with TPS65217C and MAX20029, LM10506TME/NOPB uniquely combines triple programmable bucks, a dedicated 3.2 V LDO, and SPI-configurable comparator in a single DSBGA-34 package-enabling adaptive voltage scaling and analog event monitoring in space-constrained SSDs.

Availability

LM10506TME/NOPB is available at Aetrix Electronics and suitable for solid-state drive development, ASIC power delivery, and industrial embedded storage requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LM10506TME/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 technologies with over 50 years of innovation in high-reliability IC design.

The LM10506TME/NOPB belongs to TI's Power Management Unit product line, engineered specifically for high-efficiency, multi-rail power delivery in flash-based storage systems and SoC platforms requiring dynamic voltage scaling and compact footprint.

FAQ

What is the maximum output current supported by each buck regulator in the LM10506TME/NOPB?

The LM10506TME/NOPB supports 1.3 A on Buck 1, 400 mA on Buck 2, and 600 mA on Buck 3. These values are specified under recommended operating conditions (T_J ≤ 125°C, proper PCB layout, and thermal management). Peak current limits are 1.6–2.1 A (Buck 1), 0.65–1.55 A (Buck 2), and 0.9–1.7 A (Buck 3), ensuring robust overload protection without external components.

Does the LM10506TME/NOPB support dynamic voltage scaling via SPI interface?

Yes, the LM10506TME/NOPB supports full dynamic voltage scaling through its 10 MHz SPI interface. All three buck outputs can be reprogrammed in-circuit across their respective ranges (Buck 1: 1.1–3.6 V; Buck 2: 1.1–3.6 V; Buck 3: 0.7–1.335 V), enabling real-time adaptation to processor load states and thermal conditions without hardware changes.

What is the purpose of the VCOMP and IRQ pins on the LM10506TME/NOPB?

VCOMP is an analog input pin that accepts external voltage signals (0–6 V); IRQ is an open-drain digital output that asserts when VCOMP crosses programmable rising/falling thresholds (2.768 V / 2.826 V). Together, they form a configurable interrupt comparator used for battery monitoring, thermal warning, or system-level event detection in the LM10506TME/NOPB.

Can the LM10506TME/NOPB operate in bypass mode, and which regulators support it?

Yes, the LM10506TME/NOPB supports bypass mode on Buck 1 and Buck 2 only. In bypass mode, the high-side FET remains continuously on, connecting VIN_Bx directly to the output with minimal dropout (DCR of external inductor dominates). This mode is selected via SPI register or hardware pins HL_B2/HL_B3 and is ideal for ultra-low-loss operation when VOUT ≤ VIN_Bx − 100 mV.

What package type and thermal characteristics does the LM10506TME/NOPB use?

The LM10506TME/NOPB uses a 2.84 mm × 2.84 mm DSBGA-34 package with 0.5 mm pitch. Its junction-to-ambient thermal resistance is 44.5°C/W under standard JEDEC test conditions. The device includes thermal shutdown activation at 140°C and release at 120°C, ensuring safe operation under sustained 0.9 W power dissipation in properly designed layouts.