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Texas Instruments LM10500SQ-0.8/NOPB
- Part No.:
- LM10500SQ-0.8/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
LM10500SQ-0.8/NOPB.pdf
- Description:
- IC ENERGY MGMT 5A 0.8V SD 28WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
LM10500SQ-0.8/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, 0.8 V factory-set AVS feedback voltage, 3.0–18.0 V input 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 LM10500SQ-0.8/NOPB datasheet, LM10500SQ-0.8/NOPB pinout, LM10500SQ-0.8/NOPB application, or LM10500SQ-0.8/NOPB equivalent, key selection criteria include its 0.8 V default AVS voltage code (R0=7FH, R9=40H), ±1.5% feedback accuracy, 300 kHz–1.5 MHz programmable switching frequency, cycle-by-cycle OCP, and thermal shutdown at 160 °C.
Technical Context
The LM10500SQ-0.8/NOPB implements peak-current-mode PWM control with slope compensation scaled to switching frequency, enabling stable operation across 0.6–1.0 V AVS voltage range and full 5 A load. Its internal dual LDOs (5.0 V and 2.5 V) bias analog circuitry, while the PWI interface supports register-based core voltage adjustment, sleep/wakeup, reset, and shutdown commands.
It operates in Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) depending on load and R10 register configuration, with forced-PWM capability. The device integrates high-side (44 mΩ) and low-side (22 mΩ) MOSFETs, supports external frequency synchronization via FREQ/SYNC pin, and features precision enable with 1.2 V threshold and 200 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 5 A continuous - supports high-power processor core domains without external current boosting. |
| Feedback Voltage | 0.8 V ±12 mV (typical) - factory-trimmed for immediate AVS deployment at 0.8 V startup; programmable down to 0.6 V or up to 1.0 V via PWI registers. |
| Input Voltage Range | 3.0 V to 18.0 V - enables direct regulation from common intermediate rails (5 V, 12 V) without pre-regulation. |
| Switching Frequency | 300 kHz to 1.5 MHz - adjustable via resistor or external clock sync; higher frequencies allow smaller magnetics and faster transient response. |
| Protection Features | Cycle-by-cycle OCP (7.87 A HS / 10.2 A LS), OVP (109.5% VOUT), UVLO (2.93 V AVIN rising), thermal shutdown (160 °C) - ensures robust operation under fault conditions. |
| Efficiency | Up to 95% at 1.2 V/3 A (PVIN = 12 V) - achieved via synchronous rectification and optimized gate drive, critical for thermal management in dense systems. |
| AVS Power Saving | Typical 40% reduction vs fixed-voltage supply - realized through real-time voltage adaptation to silicon process/temperature variations in AVS-capable SoCs. |
Pinout & Package
LM10500SQ-0.8/NOPB uses the WQFN-28 package (5 mm × 5 mm × 0.8 mm, 0.5 mm pitch) with exposed thermal pad. The package supports high-power dissipation (θJA = 32.4 °C/W on JEDEC 4-layer board) and requires soldering the exposed pad to PCB ground with multiple thermal vias.
| 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 | Connection point to external inductor; carries high di/dt; layout critical for EMI and efficiency. |
| PGND (7,8,9,10) | Power Ground | Return path for high-side/low-side switch currents; separate from DGND/AGND to minimize noise coupling. |
| FB (13) | Voltage Feedback | Senses regulated output; connected directly or via resistor divider; 0.8 V nominal for LM10500SQ-0.8/NOPB. |
| EN (15) | Enable Control | Precision enable with 1.2 V threshold; supports external resistor divider for custom turn-on voltage. |
| PWROK (12) | Power Good | Open-drain status signal indicating VOUT within ±5% regulation; requires external pull-up (10–100 kΩ). |
| SPWI/SCLK (19,20) | PWI Interface | 2-wire serial bus (data/clock) for AVS voltage programming, state control (sleep/wakeup), and register access. |
| VPWI (18) | PWI Supply | Dedicated 1.8–3.3 V supply for digital interface; bypassed with 1 µF ceramic capacitor for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Closed-Loop AVS with PWI 1.0/2.0 | Enables real-time voltage scaling synchronized to ASIC/SoC performance monitor (HPM), reducing dynamic power by up to 40% without firmware changes. |
| Factory-Trimmed 0.8 V Feedback | Eliminates external resistor divider for default 0.8 V AVS startup; R0=7FH and R9=40H set at production, ensuring ±1.5% accuracy over temperature. |
| Integrated Dual LDOs (5.0 V / 2.5 V) | Provides clean, dedicated bias rails for internal analog circuitry and PWI interface, isolating sensitive control loops from noisy power-switching paths. |
| Programmable Switching Frequency | Resistor- or clock-synchronized frequency tuning (300 kHz–1.5 MHz) allows optimization of size, efficiency, and EMI for each application's inductor/capacitor constraints. |
| Thermal & Electrical Protection | Comprehensive safety suite includes thermal shutdown (160 °C), OVP, UVLO, cycle-by-cycle OCP, and negative current limiting on low-side FET. |
Applications
| Server CPU Core Regulation | Networking ASIC AVS Domain |
|---|---|
|
Use Scenario: Regulating voltage for multi-core x86 or ARM processors in 1U rack servers where thermal density and energy efficiency are constrained. IC Role / Device Role / Timing Role: Primary AVS-enabled buck converter delivering adaptive core voltage under control of server SoC's Advanced Power Controller (APC). Use Value: Achieves 40% typical power reduction versus fixed-voltage supply during variable workload, lowering cooling requirements and PUE. |
Use Scenario: Powering high-speed SerDes and packet processing engines in 10/25/100 GbE line cards with tight thermal envelopes. IC Role / Device Role / Timing Role: Energy Management Unit (EMU) executing closed-loop AVS in coordination with ASIC-integrated HPM and APC logic. Use Value: Maintains timing margin across process corners and junction temperatures while minimizing static and dynamic power consumption. |
| Medical Imaging FPGA Core | Industrial Edge AI Processor |
|
Use Scenario: Supplying reconfigurable logic fabric in MRI or CT scanner subsystems requiring high reliability and low noise. IC Role / Device Role / Timing Role: Synchronous step-down regulator with precision enable and PWROK signaling for safe FPGA configuration sequencing. Use Value: Delivers 5 A at 0.8 V with <±0.1% load regulation, supporting deterministic timing closure in high-speed image reconstruction pipelines. |
Use Scenario: Powering vision/AI accelerators (e.g., NPU cores) in ruggedized edge gateways operating across -40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: AVS-capable EMU adapting voltage in real time to maintain throughput while respecting thermal limits in fanless enclosures. Use Value: Extends operational uptime by preventing thermal throttling through dynamic voltage/frequency scaling coordinated via PWI interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adaptive voltage scaling applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM10500SQ-1.0/NOPB | Factory-set FB voltage = 1.0 V (R0=7FH, R9=00H); identical pinout, specs, and PWI functionality. | Used where higher initial AVS voltage is required for legacy SoC boot sequences or specific process corners. | Select when system startup requires 1.0 V instead of 0.8 V; no hardware or firmware changes needed beyond register initialization. |
| TPS54560BQPWPRQ1 | Non-AVS 5A buck with 3.5–60 V input, no PWI interface, no AVS DAC or closed-loop control; only open-loop fixed-output regulation. | Suitable for non-AVS point-of-load applications where voltage is static and thermal/power savings from AVS are not required. | Choose only if AVS functionality is unnecessary; lacks AVS-specific protections, register interface, and 0.6–1.0 V fine-grained voltage control. |
Compared with LM10500SQ-1.0/NOPB, the LM10500SQ-0.8/NOPB provides lower startup voltage for improved energy efficiency in modern low-VT SoCs, while TPS54560BQPWPRQ1 offers wider input range but forfeits all AVS capabilities, making it unsuitable for adaptive power management systems.
Availability
LM10500SQ-0.8/NOPB is available at Aetrix Electronics and suitable for server CPU core regulation, networking ASIC AVS domains, and medical imaging FPGA power delivery requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM10500SQ-0.8/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 LM10500 product line delivers Energy Management Units for Adaptive Voltage Scaling in high-performance computing, networking, and industrial SoC platforms-designed to reduce active and standby power through real-time, closed-loop voltage control.
FAQ
What is the factory-set feedback voltage for LM10500SQ-0.8/NOPB?
The LM10500SQ-0.8/NOPB has a factory-trimmed feedback voltage of 0.8 V ±12 mV (typical), corresponding to register values R0 = 7FH and R9 = 40H. This setting enables immediate AVS operation at 0.8 V without external resistor dividers, and remains stable over temperature and process variation with ±1.5% accuracy.
Does LM10500SQ-0.8/NOPB support both PWI 1.0 and PWI 2.0 interfaces?
Yes, LM10500SQ-0.8/NOPB is fully compatible with both PowerWise Interface (PWI) 1.0 and PWI 2.0 standards. The interface version is auto-detected during power-up based on ADDR pin voltage and is reported in register R4. All core commands-including core voltage adjust, sleep, wakeup, reset, and shutdown-are supported in both versions.
How does LM10500SQ-0.8/NOPB implement Adaptive Voltage Scaling?
LM10500SQ-0.8/NOPB executes closed-loop AVS by receiving real-time performance data from an external Hardware Performance Monitor (HPM) via the PWI interface, then dynamically adjusting its output voltage using an internal 7-bit DAC (0.6–1.0 V, 3.15 mV/LSB). This maintains minimum voltage for timing closure while eliminating overvoltage margins.
What protection features are integrated into LM10500SQ-0.8/NOPB?
LM10500SQ-0.8/NOPB includes cycle-by-cycle overcurrent protection (7.87 A high-side, 10.2 A low-side), overvoltage protection (109.5% VOUT), AVIN under-voltage lockout (2.93 V rising), thermal shutdown (160 °C), and negative current limiting on the low-side FET-ensuring robust operation in mission-critical infrastructure applications.
Can LM10500SQ-0.8/NOPB operate without an external PWI controller?
Yes, LM10500SQ-0.8/NOPB can operate in standalone mode using its factory-set 0.8 V feedback voltage and internal soft-start. The PWI interface is optional for AVS; basic regulation functions (enable, PWROK, frequency setting, OCP, thermal shutdown) remain fully functional without external PWI communication.
LM10500SQ-0.8/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)
LM10500SQ-0.8/NOPB FAQ
1.How can I place an order for LM10500SQ-0.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM10500SQ-0.8/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 LM10500SQ-0.8/NOPB reliable?
The price and inventory of LM10500SQ-0.8/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM10500SQ-0.8/NOPB is usually 5 days.
3.What payment methods are accepted for LM10500SQ-0.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM10500SQ-0.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM10500SQ-0.8/NOPB?
LM10500SQ-0.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM10500SQ-0.8/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 LM10500SQ-0.8/NOPB?
For technical support, including LM10500SQ-0.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM10500SQ-0.8/NOPB requirements.
6.How does Aetrix verify that LM10500SQ-0.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LM10500SQ-0.8/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 LM10500SQ-0.8/NOPB meets industry standards.
7.What is the process for return or replacement of LM10500SQ-0.8/NOPB?
All LM10500SQ-0.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM10500SQ-0.8/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 LM10500SQ-0.8/NOPB part is unused and in its original packaging.
Return procedure for LM10500SQ-0.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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