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Texas Instruments TPS62826DMQT
- Part No.:
- TPS62826DMQT
- Manufacturer:
- Texas Instruments
- Package:
- 6-VFDFN
- Datasheet:
-
TPS62826DMQT.pdf
- Description:
- IC REG BUCK ADJ 3A 6VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,743
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Product details
Overview
TPS62826DMQT from Texas Instruments is a synchronous step-down DC/DC converter optimized for 3A load applications with 2.4V–5.5V input and adjustable 0.6V–4.0V output, featuring DCS-Control topology, 1% output voltage accuracy over –40°C to 125°C, 2.2MHz switching frequency, and 4μA quiescent current - deployed in industrial PCs and solid-state drives requiring high efficiency at light loads.
For engineers reviewing the TPS62826DMQT datasheet, TPS62826DMQT pinout, TPS62826DMQT application, or TPS62826DMQT equivalent, this page delivers verified technical context, validated pin functions, confirmed package mapping (1.5mm × 1.5mm VSON-HR), real-world application constraints, and two rigorously cross-checked alternative parts - all grounded in TI's SLVSEF9I production datasheet (March 2024 revision).
Technical Context
The TPS62826DMQT implements adaptive constant-on-time DCS-Control with seamless PWM-to-PSM mode transition, maintaining regulation across 0–3A while delivering <20mV output ripple at 1.8V/3A. Its internal 26mΩ/25mΩ MOSFET pair enables high-efficiency operation up to 97%, with active output discharge and hiccup-mode short-circuit protection.
It supports 100% duty-cycle operation for ultra-low dropout, features a dedicated open-drain power-good (PG) output with 100μs deglitch delay, and integrates thermal shutdown (150°C trip, 20°C hysteresis) and UVLO (2.2V threshold, 160mV hysteresis) - all within a 6-pin 1.5mm × 1.5mm QFN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.4V to 5.5V - supports single-cell Li-ion, USB PD, and industrial 3.3V/5V rails without external LDO pre-regulation. |
| Output Current | Up to 3A continuous - sufficient for FPGA core rails, SoC I/O domains, and multi-core MCU subsystems. |
| Output Voltage Accuracy | ±1% over –40°C to 125°C - ensures stable logic-level compliance for 1.2V/1.8V/2.5V/3.3V digital loads across temperature extremes. |
| Quiescent Current | 4μA in PSM mode - extends battery runtime in always-on portable electronics and low-power IoT edge nodes. |
| Switching Frequency | 2.2MHz nominal - enables use of compact 0.47μH inductors and small ceramic capacitors, reducing solution footprint by >40% vs. 500kHz converters. |
| Power-Good Output | Open-drain PG with 94–98% lower threshold - provides reliable rail sequencing signal for downstream processors and FPGAs. |
| Thermal Protection | 150°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
TPS62826DMQT uses a 6-pin VSON-HR (DMQ) package measuring 1.5mm × 1.5mm with wettable flanks, optimized for high-density layouts and automated optical inspection (AOI). The exposed thermal pad on the bottom enhances thermal performance (RθJA = 129.5°C/W, JEDEC standard).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high logic control; requires ≥1.0V to enable, ≤0.4V to disable; must not float - ties directly to system power sequencer or microcontroller GPIO. |
| PG (Pin 2) | Power-good open-drain output | Sinks up to 1mA; requires external pull-up to ≤5.5V rail; signals valid regulation after soft-start completes (1.25ms delay). |
| FB (Pin 3) | Feedback input | Connects to resistor divider for adjustable outputs; internal 600mV reference enables 0.6V–4.0V range; leakage <0.05μA minimizes divider error. |
| GND (Pin 4) | Ground reference | Primary return path for control circuitry and feedback network; must be connected to low-impedance PCB ground plane. |
| SW (Pin 5) | Switch node | Drives external 0.47μH inductor; carries high di/dt; requires tight layout with minimal loop area to reduce EMI and voltage spikes. |
| VIN (Pin 6) | Input power supply | Accepts 2.4V–5.5V; requires local 4.7μF ceramic capacitor placed within 2mm of pin to suppress high-frequency noise and supply transients. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Delivers fast transient response (<10μs recovery for 1A step) without external compensation components - simplifies design and improves stability margin. |
| Power-save mode (PSM) | Maintains >85% efficiency at 1mA load - critical for battery-powered devices in sleep or standby states. |
| Active output discharge | Discharges output to GND via SW pin when EN is low (75–400mA sink) - prevents floating voltages that could cause latch-up in downstream ICs. |
| 100% duty-cycle operation | Enables VIN-to-VOUT dropout as low as IOUT × RDS(on) + IOUT × DCRL - supports brownout tolerance in systems with tight input/output margins. |
| Hiccup short-circuit protection | Shuts down for 100μs after 32 consecutive current-limit cycles - limits average power dissipation during sustained fault, enabling safe auto-recovery. |
Applications
| Solid-State Drive (SSD) Power Rail | Industrial PC Core Voltage |
|---|---|
Use Scenario: Supplies 1.2V/3A to NAND flash controller and DRAM buffer in M.2 NVMe SSDs operating in wide ambient temperatures. IC Role / Device Role / Timing Role: Primary point-of-load regulator with fast load-step response and tight output accuracy to meet JEDEC DDR timing specs. Use Value: 1% VOUT accuracy ensures stable memory interface timing across –40°C to 125°C; 4μA IQ extends SSD standby time in enterprise storage arrays. |
Use Scenario: Powers ARM-based SoC cores in fanless industrial PCs deployed in factory automation cabinets. IC Role / Device Role / Timing Role: High-density buck converter delivering regulated 1.8V/3A with integrated PG for safe processor boot sequencing. Use Value: 2.2MHz switching allows 0.47μH inductor and 2×10μF output caps - reduces BOM count and PCB area by 35% vs. legacy 500kHz solutions. |
| Analog Security Camera Sensor Bias | Portable Medical Diagnostic Module |
Use Scenario: Generates clean 3.3V/2A bias for CMOS image sensor and analog front-end in IP security cameras with PoE+ power input. IC Role / Device Role / Timing Role: Low-noise, high-PG-integrity regulator ensuring stable sensor bias during video streaming and motion detection bursts. Use Value: Open-drain PG with 100μs deglitch enables reliable reset coordination with camera ISP; 97% peak efficiency minimizes thermal rise in sealed enclosures. |
Use Scenario: Provides 2.5V/3A to ADC, op-amp, and wireless BLE SoC in handheld ultrasound or glucose monitor with coin-cell backup. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter supporting dual-mode operation: forced-PWM for measurement accuracy, PSM for standby longevity. Use Value: 4μA quiescent current extends battery life to >12 months in sleep mode; 1.5mm × 1.5mm package fits constrained medical device form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62826ADMQ | Forced-PWM only (no PSM); 8mA IQ; identical 3A rating and package | Preferred where ultra-low output ripple (<10mV) and fixed 2.2MHz frequency are mandatory - e.g., RF-sensitive medical sensors | Select TPS62826ADMQ if ripple-sensitive analog circuits dominate; otherwise TPS62826DMQT offers superior light-load efficiency. |
| TPS62825DMQT | 2A output rating; same PSM/PWM architecture, package, and pinout | Suitable for lower-current applications like single-core microcontrollers or sensor hubs where 3A headroom is unnecessary | Choose TPS62825DMQT to reduce cost and thermal margin when max load is ≤2A; retains full compatibility for drop-in redesign. |
Compared with TPS62826ADMQ and TPS62825DMQT, the TPS62826DMQT uniquely balances 3A capability, 4μA quiescent current, and seamless PSM/PWM mode transition - making it optimal for battery-constrained industrial and portable systems requiring both peak performance and extended runtime.
Availability
TPS62826DMQT is available at Aetrix Electronics and suitable for solid-state drives, industrial PCs, and portable medical diagnostics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS62826DMQT 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 power management IC design and manufacturing.
The TPS6282x family was engineered for space-constrained, battery-sensitive applications demanding high efficiency across full load ranges - targeting SSDs, portable instrumentation, and industrial edge computing platforms.
FAQ
What is the maximum output current supported by the TPS62826DMQT?
The TPS62826DMQT is rated for up to 3A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). This rating is validated across the full 2.4V–5.5V input range and 0.6V–4.0V output range, with derating required above 85°C ambient per thermal metrics in the datasheet (RθJA = 129.5°C/W).
Does the TPS62826DMQT support adjustable output voltage?
Yes, the TPS62826DMQT supports fully adjustable output voltage from 0.6V to 4.0V using an external resistor divider connected to the FB pin. The internal reference is 600mV ±1%, and the recommended R2 value is 100kΩ to balance light-load efficiency and noise immunity - enabling precise rail generation for diverse digital and analog loads.
How does the power-good (PG) signal behave during startup and fault conditions?
The TPS62826DMQT's PG pin is an open-drain output that remains low during startup until the output reaches 94–98% of target voltage, then transitions high after a 100μs deglitch delay. It asserts low during EN disable, UVLO (VIN < 2.2V), thermal shutdown (>150°C), or output undervoltage - providing robust sequencing and fault indication for downstream logic.
Can the TPS62826DMQT operate with 100% duty cycle, and what is the minimum input voltage required?
Yes, the TPS62826DMQT supports 100% duty-cycle operation to minimize dropout. Minimum input voltage is calculated as VIN,min = VOUT + IOUT,MAX × RDS(on) + IOUT,MAX × DCRL, where RDS(on) = 26mΩ (high-side) and DCRL is inductor DC resistance - enabling operation down to ~1.25V overhead at 3A with typical 0.47μH inductors.
What thermal protection mechanisms are built into the TPS62826DMQT?
The TPS62826DMQT incorporates thermal shutdown at 150°C (typical) with 20°C hysteresis, plus hiccup-mode short-circuit protection that disables the high-side FET for 100μs upon detecting 32 consecutive current-limit events. These features prevent permanent damage during sustained overload, poor heatsinking, or output shorts - ensuring field reliability in unattended industrial deployments.
TPS62826DMQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-VFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-VSON-HR (1.5x1.5)
TPS62826DMQT FAQ
1.How can I place an order for TPS62826DMQT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62826DMQT 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 TPS62826DMQT reliable?
The price and inventory of TPS62826DMQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62826DMQT is usually 5 days.
3.What payment methods are accepted for TPS62826DMQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62826DMQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62826DMQT?
TPS62826DMQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62826DMQT 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 TPS62826DMQT?
For technical support, including TPS62826DMQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62826DMQT requirements.
6.How does Aetrix verify that TPS62826DMQT is sourced from the original manufacturer or authorized distributors?
All TPS62826DMQT 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 TPS62826DMQT meets industry standards.
7.What is the process for return or replacement of TPS62826DMQT?
All TPS62826DMQT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62826DMQT, 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 TPS62826DMQT part is unused and in its original packaging.
Return procedure for TPS62826DMQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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