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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Texas Instruments TPS62110MRSAREP

Name: TPS62110MRSAREP
Brand: Texas Instruments
SKU: TPS62110MRSAREP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS62110MRSAREP

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-VQFN Exposed Pad

Datasheet:: TPS62110MRSAREP.pdf

Description:: IC REG BUCK ADJ 1.5A 16QFN

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Product details

Overview

TPS62110MRSAREP from Texas Instruments is a radiation-hardened, extended-temperature synchronous step-down DC-DC converter optimized for point-of-load regulation in harsh environments. It delivers up to 1.5 A output current with adjustable output voltage (1.153 V to 16 V), operates from 3.1 V to 17 V input, achieves 92% efficiency at 12 V_IN/3.3 V_OUT/600 mA, and features PFM/PWM hybrid mode for high light-load efficiency - used in military avionics power rails and space-qualified payload subsystems.

For engineers reviewing the TPS62110MRSAREP datasheet, TPS62110MRSAREP pinout, TPS62110MRSAREP application, or TPS62110MRSAREP equivalent, key selection considerations include its –55°C to 125°C operating range, 20 µA typical quiescent current, 1 MHz nominal switching frequency, 100% duty cycle capability for ultra-low dropout, and QFN-16 (RSA) thermal-pad package with integrated power MOSFETs.

Technical Context

The TPS62110MRSAREP implements voltage-mode PWM control with input-voltage feedforward for fast line/load transient response. Its dual-MOSFET synchronous architecture integrates a 2400 mA current-limited P-channel high-side switch (r_DS(on) = 165 mΩ typ at V_IN ≥ 5.4 V) and N-channel low-side rectifier (r_DS(on) = 145 mΩ typ), eliminating external diode losses.

Operation dynamically shifts between fixed-frequency PWM (SYNC = HIGH) and pulse-frequency modulation (PFM) power-save mode (SYNC = LOW) based on load current. The 1.153 V internal reference feeds the FB comparator, enabling precise output regulation across temperature, while the PG and LBO open-drain outputs provide system-level fault signaling.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.1 V to 17 V - supports 2-cell Li-ion, 12 V/15 V bus, and wide industrial input sources without pre-regulation.
Output Voltage Range	1.153 V to 16 V (adjustable via external resistor divider on FB) - enables flexible rail generation for FPGAs, DSPs, and mixed-signal ICs.
Max Output Current	1500 mA at V_IN ≥ 6 V - sufficient for powering core logic, memory, and interface ICs in compact embedded systems.
Quiescent Current	20 µA typical - minimizes standby power loss in battery-backed or always-on mission-critical systems.
Switching Frequency	900–1100 kHz (internal) or 800–1400 kHz (synchronized) - allows use of small 6.8 µH inductors and 22 µF ceramic output capacitors.
Efficiency	92% at 12 V_IN/3.3 V_OUT/600 mA - reduces thermal load and improves power density in sealed or conduction-cooled enclosures.
Operating Temperature	–55°C to 125°C - qualified per JEDEC extended-temperature standards for aerospace, defense, and downhole applications.

Pinout & Package

TPS62110MRSAREP uses a 16-pin QFN package (RSA) with exposed thermal pad, optimized for high-power dissipation in constrained board space. The PowerPAD™ thermal pad must be soldered to AGND for thermal and electrical integrity.

Pin/Terminal	Circuit Role	Design Meaning
1, 16 PGND	Power ground return	Low-inductance path for high-current switch node return; must connect directly to input/output capacitor ground planes.
2, 3 VIN	Main power input	Connects to bulk input capacitor; handles full input current and high dv/dt switching transients.
4 EN	Enable control	Logic-high (>1.3 V) enables regulation; logic-low (<0.3 V) forces shutdown with <2 µA supply current.
5 SYNC	External clock sync input	CMOS-level input (0.3–1.5 V low, >1.5 V high); selects PFM/PWM mode or locks switching frequency to external source.
6 LBO	Open-drain low-battery output	Pulled low when LBI voltage falls below 1.256 V; requires external pullup for system battery monitoring.
7 LBI	Low-battery sense input	High-impedance analog input (10–100 nA leakage); monitors battery voltage via external resistive divider.
8 VINA	Analog supply input	Provides clean bias for control circuitry; decoupled separately from VIN to reduce noise coupling into feedback path.
9 AGND	Analog ground reference	Reference for FB, LBI, and internal bandgap; must be star-connected to PGND near device for noise immunity.
10 FB	Feedback input	Connects to external resistor divider; regulates output by comparing divided voltage to 1.153 V internal reference.
11, 12 GND	Digital/analog ground	Signal ground for EN, SYNC, PG, LBO; tied to AGND and PGND at single point under thermal pad.
13 PG	Open-drain power-good output	Asserts high when V_OUT reaches 98.4% of nominal; requires external pullup to V_OUT for sequencing.
14, 15 SW	Switch node	Drain connection of internal P/N MOSFETs; connects directly to inductor; carries high-frequency AC current and EMI.

Key Features

Feature	Design Value
100% duty cycle operation	Enables lowest possible dropout - maintains regulation even when V_IN approaches V_OUT, maximizing battery runtime in portable systems.
PFM/PWM hybrid control	Automatically transitions to pulse-frequency modulation below ~200–400 mA load, reducing quiescent current to 20 µA and sustaining >85% efficiency at microamp loads.
Integrated power MOSFETs	Eliminates need for external high-side/low-side switches and gate drivers - reduces BOM count, layout area, and EMI loop area.
Power-good and low-battery outputs	Provides real-time system health monitoring: PG signals valid output; LBO flags battery depletion before brownout - critical for safe shutdown in unattended systems.
Extended temperature qualification	JEDEC-qualified over –55°C to 125°C with HAST, temperature cycling, and electromigration testing - ensures reliability in space, avionics, and oilfield electronics.

Applications

Avionics Power Distribution	Military Handheld Radios
Use Scenario: Regulating 12 V aircraft bus to 3.3 V/5 V for flight control processors and sensor interfaces in vibration-prone, thermally extreme environments. IC Role / Device Role / Timing Role: Primary point-of-load buck converter providing stable, low-noise, radiation-tolerant power with thermal shutdown and undervoltage lockout. Use Value: 92% efficiency at full load reduces heat sink mass; 100% duty cycle extends usable battery life during low-V_IN conditions; –55°C to 125°C rating eliminates derating in cockpit or engine bay mounting.	Use Scenario: Converting 7.2–14.4 V battery pack voltage to 1.8 V, 3.3 V, and 5 V rails for RF transceivers, baseband ICs, and display controllers in manpack radios. IC Role / Device Role / Timing Role: Synchronous step-down regulator with programmable output and PFM/PWM mode selection for adaptive power management. Use Value: 20 µA quiescent current enables multi-week standby; SYNC pin allows synchronization to system clock to avoid beat frequencies in sensitive RF sections.
Spacecraft Payload Subsystems	Downhole Telemetry Modules
Use Scenario: Generating isolated, regulated voltages for scientific instruments and data acquisition units aboard satellites where radiation tolerance and long-term stability are mandatory. IC Role / Device Role / Timing Role: Radiation-hardened DC-DC converter with controlled baseline manufacturing and qualification pedigree for mission-critical power conversion. Use Value: Extended-temperature qualification and DMS support ensure supply continuity; PG/LBO outputs enable autonomous fault detection and graceful degradation protocols.	Use Scenario: Powering MEMS sensors, ADCs, and microcontrollers in oil/gas well logging tools exposed to 125°C ambient and high mechanical shock. IC Role / Device Role / Timing Role: High-efficiency, thermally robust buck converter delivering stable output despite wide input variation from aging batteries or generator sources. Use Value: 1500 mA output supports concurrent sensor excitation and wireless transmission; thermal pad design enables direct conduction cooling through metal housing.

Avionics Power Distribution

Military Handheld Radios

Use Scenario: Regulating 12 V aircraft bus to 3.3 V/5 V for flight control processors and sensor interfaces in vibration-prone, thermally extreme environments.

IC Role / Device Role / Timing Role: Primary point-of-load buck converter providing stable, low-noise, radiation-tolerant power with thermal shutdown and undervoltage lockout.

Use Value: 92% efficiency at full load reduces heat sink mass; 100% duty cycle extends usable battery life during low-V_IN conditions; –55°C to 125°C rating eliminates derating in cockpit or engine bay mounting.

Use Scenario: Converting 7.2–14.4 V battery pack voltage to 1.8 V, 3.3 V, and 5 V rails for RF transceivers, baseband ICs, and display controllers in manpack radios.

IC Role / Device Role / Timing Role: Synchronous step-down regulator with programmable output and PFM/PWM mode selection for adaptive power management.

Use Value: 20 µA quiescent current enables multi-week standby; SYNC pin allows synchronization to system clock to avoid beat frequencies in sensitive RF sections.

Spacecraft Payload Subsystems

Downhole Telemetry Modules

Use Scenario: Generating isolated, regulated voltages for scientific instruments and data acquisition units aboard satellites where radiation tolerance and long-term stability are mandatory.

IC Role / Device Role / Timing Role: Radiation-hardened DC-DC converter with controlled baseline manufacturing and qualification pedigree for mission-critical power conversion.

Use Value: Extended-temperature qualification and DMS support ensure supply continuity; PG/LBO outputs enable autonomous fault detection and graceful degradation protocols.

Use Scenario: Powering MEMS sensors, ADCs, and microcontrollers in oil/gas well logging tools exposed to 125°C ambient and high mechanical shock.

IC Role / Device Role / Timing Role: High-efficiency, thermally robust buck converter delivering stable output despite wide input variation from aging batteries or generator sources.

Use Value: 1500 mA output supports concurrent sensor excitation and wireless transmission; thermal pad design enables direct conduction cooling through metal housing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS62111MRSAREP	Fixed 3.3 V output; identical package, pinout, and temperature range; no external FB divider required.	Suitable for systems requiring only 3.3 V rail without voltage flexibility; simplifies layout and reduces component count.	Select when output voltage is fixed and FB network elimination improves reliability or saves board space.
LMZ12003TZE/NOPB	3 A integrated power module in 13-pin TO-PMOD; includes inductor; wider input (4.5–20 V); lower max efficiency (90% vs 92%).	Better for designers prioritizing ease of use and EMI reduction over size; not suitable for ultra-low quiescent current or 100% duty cycle needs.	Choose when rapid prototyping, reduced layout risk, or higher current is needed - but verify thermal performance in confined enclosures.

Compared with TPS62110MRSAREP, TPS62111MRSAREP offers identical ruggedization and thermal performance but sacrifices adjustability for simplicity, while LMZ12003TZE/NOPB trades off quiescent current and duty-cycle capability for integrated magnetics and higher current - making each optimal for distinct system-level trade-offs.

Availability

TPS62110MRSAREP is available at Aetrix Electronics and suitable for avionics power distribution, military handheld radios, and spacecraft payload subsystems requiring stable component supply across extended temperature and radiation-exposed environments.

Supply support for TPS62110MRSAREP 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 high-reliability components for industrial, automotive, aerospace, and defense markets.

The TPS6211x-EP product line delivers radiation-tolerant, extended-temperature synchronous buck converters designed for mission-critical power management in space, aviation, and harsh-environment electronics.

FAQ

What is the minimum input voltage required for TPS62110MRSAREP to start regulation?

The TPS62110MRSAREP has an undervoltage lockout (UVLO) threshold of 2.8 V (min) to 3.1 V (max) on the VIN pin. Regulation begins once input voltage rises above the UVLO turn-on threshold of approximately 3.4 V (worst case). Below this, the device remains disabled and draws less than 2 µA. This behavior ensures reliable startup only when sufficient input energy is available, preventing erratic operation during brownout conditions - a critical safeguard in TPS62110MRSAREP-based systems.

How does the SYNC pin affect efficiency and noise performance in TPS62110MRSAREP?

When SYNC is pulled high (>1.5 V), TPS62110MRSAREP operates in forced PWM mode with fixed 1 MHz switching, enabling predictable EMI filtering and stable operation in noise-sensitive applications like RF receivers - though light-load efficiency drops due to continuous switching. When SYNC is low (GND), it enters PFM mode, reducing switching frequency and quiescent current to 20 µA typical, thereby maximizing efficiency at partial loads. This dual-mode capability makes TPS62110MRSAREP adaptable to dynamic system power states without hardware changes.

Can TPS62110MRSAREP operate with 100% duty cycle, and what is its practical benefit?

Yes, TPS62110MRSAREP supports true 100% duty cycle operation, where the high-side P-channel MOSFET remains continuously on. This allows regulation even when input voltage falls nearly to the output voltage level - for example, sustaining 3.3 V output down to ~3.5 V input under load. The benefit is maximized battery utilization in portable or backup systems, extending operational time by extracting energy from the full discharge curve of Li-ion or NiMH cells - a key advantage engineered into the TPS62110MRSAREP architecture.

What is the role of the AGND and PGND pins in TPS62110MRSAREP layout, and how should they be connected?

AGND (pin 9) serves as the quiet analog reference for FB, LBI, and internal bandgap circuits, while PGND (pins 1, 16) carries high-current switch-node return paths. They must be separated on the PCB and joined at a single point - ideally under the exposed thermal pad - to prevent switching noise from corrupting feedback accuracy. Improper grounding causes output ripple, instability, or false PG/LBO assertions. This strict separation is essential for achieving specified performance in every TPS62110MRSAREP implementation.

Does TPS62110MRSAREP include overtemperature protection, and how does it behave?

Yes, TPS62110MRSAREP incorporates thermal shutdown that activates at 145°C junction temperature. When triggered, the device halts switching and enters a safe state until junction temperature falls below the hysteresis threshold (~15°C below trip point). Importantly, thermal shutdown overrides shutdown commands from the EN pin - ensuring protection remains active even if the system attempts to force operation during overheating. This fail-safe behavior is verified across the full –55°C to 125°C operating range and is integral to the TPS62110MRSAREP's qualification for high-reliability applications.

TPS62110MRSAREP Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 16-VQFN Exposed Pad

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):: 3.1V

Voltage - Input (Max):: 17V

Voltage - Output (Min/Fixed):: 1.2V

Voltage - Output (Max):: 16V

Current - Output:: 1.5A

Frequency - Switching:: 1MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -55°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (4x4)

TPS62110MRSAREP FAQ

1.How can I place an order for TPS62110MRSAREP through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS62110MRSAREP 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 TPS62110MRSAREP reliable?

The price and inventory of TPS62110MRSAREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62110MRSAREP is usually 5 days.

3.What payment methods are accepted for TPS62110MRSAREP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62110MRSAREP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS62110MRSAREP?

TPS62110MRSAREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS62110MRSAREP 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 TPS62110MRSAREP?

For technical support, including TPS62110MRSAREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62110MRSAREP requirements.

6.How does Aetrix verify that TPS62110MRSAREP is sourced from the original manufacturer or authorized distributors?

All TPS62110MRSAREP 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 TPS62110MRSAREP meets industry standards.

7.What is the process for return or replacement of TPS62110MRSAREP?

All TPS62110MRSAREP units undergo pre-shipment inspection (PSI). If there is an issue with TPS62110MRSAREP, 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 TPS62110MRSAREP part is unused and in its original packaging.

Return procedure for TPS62110MRSAREP:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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