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Texas Instruments LM10500SQE-1.0/NOPB
- Part No.:
- LM10500SQE-1.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LM10500SQE-1.0/NOPB.pdf
- Description:
- IC ENERGY MGMT 5A 1V SD 28WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
LM10500SQE-1.0/NOPB from Texas Instruments is a 5A synchronous step-down Energy Management Unit (EMU) with closed-loop Adaptive Voltage Scaling (AVS), PWI 1.0/2.0 serial interface, 0.6–1.0 V programmable feedback range, and WQFN-28 package. It actively reduces system power in AVS-compatible ASICs and SoCs by dynamically adjusting output voltage based on real-time performance monitoring.
For engineers reviewing the LM10500SQE-1.0/NOPB datasheet, LM10500SQE-1.0/NOPB pinout, LM10500SQE-1.0/NOPB application, or LM10500SQE-1.0/NOPB equivalent, this page delivers verified technical context, validated pin functions, confirmed AVS power-saving behavior (up to 40%), exact WQFN-28 thermal pad layout, and two field-validated alternative EMUs for server and industrial processor point-of-load designs.
Technical Context
The LM10500SQE-1.0/NOPB implements peak current mode control with slope compensation scaled to switching frequency (300 kHz–1.5 MHz), enabling stable operation across 0.6–1.0 V AVS output range and 3–18 V input. Its internal 5A synchronous buck stage integrates high-side (44 mΩ) and low-side (22 mΩ) MOSFETs with cycle-by-cycle OCP and negative current limiting on the low-side switch.
It operates cooperatively with Hardware Performance Monitors (HPM) and Advanced Power Controllers (APC) via PWI 1.0/2.0 - a 2-wire serial interface supporting Core Voltage Adjust, Sleep, Wake-up, and Reset commands. The device uses a 7-bit DAC (0.6–1.0 V, 3.15 mV/LSB) with ±1 LSB INL and ±0.5 LSB DNL to deliver precise closed-loop AVS voltage scaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 5 A continuous - supports high-power processor core domains without external current sharing. |
| Input Voltage Range | 3.0 V to 18.0 V - enables direct regulation from common intermediate rails (5 V, 12 V, 15 V). |
| AVS Feedback Range | 0.6 V to 1.0 V (7-bit DAC, 3.15 mV/LSB) - provides fine-grained, process/temperature-compensated voltage control for AVS. |
| Switching Frequency | 300 kHz to 1.5 MHz - adjustable via resistor or external sync clock; supports EMI optimization and small L-C filter design. |
| Feedback Accuracy | ±1.5% over temperature - ensures tight output regulation under AVS dynamic voltage transitions. |
| Power Saving (AVS) | Typical 40% vs. fixed-voltage supply - measured across −20°C to +80°C ambient with AVS-compatible SoCs. |
| Package | WQFN-28 (5 mm × 5 mm × 0.8 mm, 0.5 mm pitch, exposed thermal pad) - optimized for high-power density and thermal dissipation (θJA = 32.4°C/W). |
Pinout & Package
LM10500SQE-1.0/NOPB uses the WQFN-28 package (TI package code RSG0028B) with an exposed thermal pad requiring connection to PCB ground via multiple vias. The package supports high-current routing with four PVIN pins (1,2,27,28), four SW pins (3,4,5,6), and four PGND pins (7,8,9,10) for low-impedance power loop closure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (1,2,27,28) | Power Input | High-current input for integrated power switches; must be decoupled with low-ESR ceramic capacitors near pins. |
| SW (3,4,5,6) | Switch Node | Connects directly to external inductor; shared node for high-side and low-side FETs; requires minimal trace inductance. |
| PGND (7,8,9,10) | Power Ground | Return path for power switches; must be tied to exposed thermal pad and separated from DGND/AGND planes. |
| FB (13) | Voltage Feedback | Accepts 0.6–1.0 V AVS-programmed reference; connects to output via resistor divider or direct tap for lowest noise. |
| EN (15) | Precision Enable | Resistor-programmable turn-on threshold (1.1–1.3 V); supports sequencing with upstream supplies. |
| PWROK (12) | Power Good | Open-drain output indicating regulated output (±5% window); requires external 10–100 kΩ pull-up for logic-level signaling. |
| VPWI, SPWI, SCLK (18–20) | PWI Interface | 2-wire serial bus (1.8–3.3 V tolerant) for AVS voltage updates, sleep/wake commands, and register access. |
| COMP (11) | Compensation | Connects to external RC network to set error amplifier bandwidth and ensure stability across full AVS range. |
Key Features
| Feature | Design Value |
|---|---|
| Closed-loop AVS with PWI 1.0/2.0 | Enables real-time voltage scaling synchronized to HPM/APC telemetry - eliminates fixed-margin overdesign in processor cores. |
| Resistor-programmable switching frequency | 300 kHz–1.5 MHz tuning via single external resistor (RFRQ) - allows EMI spread-spectrum alignment and optimal efficiency at load points. |
| Internal soft-start (1.9–6.2 ms) | Controls in-rush current during startup and PWI wake-up - prevents input rail droop and output overshoot in multi-rail systems. |
| Thermal shutdown with 10°C hysteresis | Protects against sustained overload or poor heatsinking; auto-recovery after cooldown avoids manual reset in embedded systems. |
| DCM/CCM selectable operation | Extends high efficiency down to light loads (<100 mA) via Discontinuous Conduction Mode - critical for idle-state power savings. |
Applications
| Server CPU Core Supply | Networking ASIC AVS Domain |
|---|---|
|
Use Scenario: Regulating core voltage for multi-core x86 or ARM-based server CPUs operating across wide PVT corners. IC Role / Device Role / Timing Role: Energy Management Unit (EMU) executing closed-loop AVS under APC command via PWI interface. Use Value: Delivers up to 40% active power reduction versus fixed-voltage supply while maintaining timing margins across −40°C to +85°C. |
Use Scenario: Dynamic voltage scaling for high-throughput networking ASICs in 10G/25G line cards with thermal constraints. IC Role / Device Role / Timing Role: Synchronous buck converter with PWI-controlled 0.6–1.0 V output, synchronized to system clock via FREQ/SYNC pin. Use Value: Enables sub-100 µs voltage transitions between performance states without compromising signal integrity or jitter. |
| Industrial Processor PoL | Medical Imaging FPGA Core Rail |
|
Use Scenario: Point-of-load regulation for ruggedized ARM or RISC-V processors in factory automation controllers. IC Role / Device Role / Timing Role: High-reliability EMU with UVLO (2.66–2.99 V), OVP (103.5–115% VOUT), and thermal shutdown (160°C). Use Value: Maintains functional safety compliance with dual independent ground paths (PGND/DGND/AGND) and 150°C junction rating. |
Use Scenario: Powering FPGA fabric in portable MRI or ultrasound subsystems requiring ultra-low noise and fast transient response. IC Role / Device Role / Timing Role: Low-noise buck regulator with precision 1.5% FB accuracy, 0.02%/A load regulation, and 0.01%/V line regulation. Use Value: Supports clean digital logic operation under rapid imaging workloads with <50 mV output deviation during 0.1–5 A load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar energy management unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53679RTAR | 6 A, 4.5–16 V input, PMBus interface, no native AVS/PWI support; requires external MCU for closed-loop scaling. | Targets datacenter VR13/VR14 compliance; lacks hardware-integrated AVS telemetry path. | Choose when PMBus ecosystem integration is required and AVS logic resides in host firmware. |
| ISL9122AIRZ-T7A | 3 A, 2.5–5.5 V input, I²C interface, integrated AVS algorithm; no PWI compatibility or 0.6–1.0 V DAC resolution. | Optimized for mobile SoCs; limited input range excludes 12 V intermediate rail use. | Choose for battery-powered edge AI processors where ultra-low IQ (<10 µA shutdown) and small footprint dominate. |
Compared with LM10500SQE-1.0/NOPB, TPS53679RTAR offers higher current but requires external AVS coordination, while ISL9122AIRZ-T7A provides autonomous AVS at lower current and narrower input range - neither matches the LM10500SQE-1.0/NOPB's combination of 5 A, 3–18 V, PWI-native 0.6–1.0 V DAC, and WQFN thermal performance.
Availability
LM10500SQE-1.0/NOPB is available at Aetrix Electronics and suitable for server CPU core supplies, networking ASIC AVS domains, and industrial processor point-of-load applications requiring stable component supply, long-term lifecycle support, and TI-qualified automotive/industrial grade reliability.
Supply support for LM10500SQE-1.0/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 high-efficiency DC/DC conversion and system-level power architecture.
The LM10500SQE-1.0/NOPB belongs to TI's Energy Management Unit (EMU) product line, designed specifically for adaptive voltage scaling in high-performance processors, SoCs, and ASICs where dynamic power optimization is critical to thermal and energy budgets.
FAQ
What is the default AVS feedback voltage setting for LM10500SQE-1.0/NOPB?
The LM10500SQE-1.0/NOPB is factory-configured with R0 = 0x7F and R9 = 0x00, resulting in a default AVS feedback voltage of 1.0 V (±15 mV). This corresponds to the top of the 0.6–1.0 V programmable range and is confirmed in the General Electrical Characteristics table under "LM10500SQ-1.0" row. The device retains this setting until modified via PWI register write.
Does LM10500SQE-1.0/NOPB support both PWI 1.0 and PWI 2.0 protocols?
Yes, LM10500SQE-1.0/NOPB is fully compatible with both PWI 1.0 and PWI 2.0 standards. The protocol version is auto-detected and reported in Register R4 (bits 1:0), returning 2b′01 for PWI 1.0 or 2b′10 for PWI 2.0. No hardware configuration is required - the interface adapts automatically upon first communication.
What is the maximum allowable input voltage for LM10500SQE-1.0/NOPB?
The absolute maximum input voltage for LM10500SQE-1.0/NOPB is +20 V on PVIN and AVIN pins relative to AGND, per Absolute Maximum Ratings. However, the recommended operating range is 3.0 V to 18.0 V. Operation above 18 V risks exceeding internal gate oxide limits and is not characterized for reliability or parametric performance.
How does the LM10500SQE-1.0/NOPB handle light-load efficiency?
The LM10500SQE-1.0/NOPB improves light-load efficiency by entering Discontinuous Conduction Mode (DCM) when output current drops below ~200 mA, controlled by bit 2 (Force PWM) in Register R10. In DCM, switching losses are reduced while maintaining regulation - enabling >85% efficiency at 100 mA load with 12 V input and 1.0 V output.
Can LM10500SQE-1.0/NOPB be synchronized to an external clock source?
Yes, LM10500SQE-1.0/NOPB supports external clock synchronization via the FREQ/SYNC pin (Pin 16). When AC-coupled to an external clock (e.g., 500 kHz–1.2 MHz square wave), the internal oscillator locks to the external frequency, enabling deterministic switching and EMI reduction in multi-converter systems.
LM10500SQE-1.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- PowerWise®
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Energy Management Unit (EMU)
- Current - Supply:
- 9mA
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-WQFN (5x5)
LM10500SQE-1.0/NOPB FAQ
1.How can I place an order for LM10500SQE-1.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM10500SQE-1.0/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM10500SQE-1.0/NOPB reliable?
The price and inventory of LM10500SQE-1.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM10500SQE-1.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM10500SQE-1.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM10500SQE-1.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM10500SQE-1.0/NOPB?
LM10500SQE-1.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM10500SQE-1.0/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM10500SQE-1.0/NOPB?
For technical support, including LM10500SQE-1.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM10500SQE-1.0/NOPB requirements.
6.How does Aetrix verify that LM10500SQE-1.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM10500SQE-1.0/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM10500SQE-1.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM10500SQE-1.0/NOPB?
All LM10500SQE-1.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM10500SQE-1.0/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM10500SQE-1.0/NOPB part is unused and in its original packaging.
Return procedure for LM10500SQE-1.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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