My Inquiry
My Account
Texas Instruments TPS62110QRSAREP
- Part No.:
- TPS62110QRSAREP
- Manufacturer:
- Texas Instruments
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
TPS62110QRSAREP.pdf
- Description:
- IC REG BUCK ADJ 1.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,886
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62110QRSAREP from Texas Instruments is a radiation-hardened, high-efficiency synchronous step-down DC-DC converter with adjustable output (1.153 V to 16 V), 3.1 V–17 V input range, and up to 1.5 A output current. It integrates P-channel and N-channel MOSFETs, operates from –55°C to 125°C, and targets point-of-load regulation in space-grade power systems.
For engineers reviewing the TPS62110QRSAREP datasheet, TPS62110QRSAREP pinout, TPS62110QRSAREP application, or TPS62110QRSAREP equivalent, key selection criteria include its 20 µA quiescent current in PFM mode, 1 MHz nominal switching frequency, 100% duty cycle capability for low-dropout operation, SYNC-controlled PWM/PFM mode selection, and QFN-16 (RSA) thermal-enhanced package with exposed pad.
Technical Context
The TPS62110QRSAREP implements voltage-mode control with input-voltage feedforward for fast line/load transient response. Its dual-mode operation-forced PWM (SYNC = HIGH) and power-save PFM (SYNC = LOW)-enables noise-sensitive or ultra-low-power system design without sacrificing regulation accuracy.
It features integrated overcurrent and overtemperature protection, undervoltage lockout (2.8 V–3.1 V threshold), programmable low-battery detection via LBI/LBO, and open-drain power-good (PG) with 50 µs delay. The FB pin accepts external resistive dividers for precise output adjustment, while internal compensation simplifies layout.
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 rails, and wide industrial bus inputs. |
| Output Voltage | Adjustable 1.153 V to 16 V - set via external resistor divider on FB pin; 1.153 V reference enables precision regulation. |
| Max Output Current | 1.5 A at VI ≥ 6 V - sufficient for FPGA core, DSP, or microcontroller point-of-load supplies. |
| Quiescent Current | 20 µA typical in PFM mode - extends battery life in always-on or standby subsystems. |
| Switching Frequency | 900–1100 kHz (internal); 800–1400 kHz (synchronized) - enables compact 1–2.2 µH inductors and low-ESR ceramic capacitors. |
| Efficiency | 92% at 12 VIN/3.3 VOUT/600 mA - achieved via synchronous rectification and optimized MOSFET RDS(on) (165 mΩ P-ch / 145 mΩ N-ch). |
| Operating Temp | –55°C to 125°C - qualified per JEDEC extended temp standards for aerospace and defense applications. |
Pinout & Package
TPS62110QRSAREP uses a 16-pin QFN (RSA) package with 4 mm × 4 mm footprint and exposed thermal pad soldered to AGND. The package supports high-power dissipation (2.5 W at TA ≤ 25°C) and meets enhanced reliability requirements for space-grade use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 PGND | Power Ground | Low-impedance return path for high-current switch node; must be connected directly to PCB power plane. |
| 2, 3 VIN | Main Power Input | Connects to bulk input capacitor; handles full input current and high di/dt switching transients. |
| 4 EN | Enable Control | Active-high logic input; <2 µA shutdown current when pulled low; includes 170 mV hysteresis for noise immunity. |
| 5 SYNC | Frequency Synchronization | CMOS-level input; forces fixed-frequency PWM when HIGH, enables PFM/PWM auto-switching when LOW. |
| 6 LBO | Low-Battery Output | Open-drain flag indicating LBI voltage below 1.256 V; requires external pullup for system monitoring. |
| 7 LBI | Low-Battery Input | Analog input for external battery voltage sensing; 10–100 nA leakage preserves battery integrity. |
| 8 VINA | Analog Supply Input | Provides clean bias for control circuitry; decoupled separately from VIN to reduce noise coupling. |
| 9 AGND | Analog Ground | Reference for FB, LBI, PG, and internal error amplifier; must be star-connected to PGND near IC. |
| 10 FB | Feedback Input | High-impedance node (10–100 nA leakage) for external resistor divider; sets output voltage via 1.153 V reference. |
| 11, 12 GND | Digital Ground | Reference for EN, SYNC, PG, LBO logic; tied to AGND and PGND at single point under IC. |
| 13 PG | Power-Good Output | Open-drain comparator output active when VOUT > 98.4% of nominal; 50 µs delay ensures stable startup. |
| 14, 15 SW | Switch Node | Connection to external inductor; carries high-frequency AC current; requires tight loop layout with low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| 100% Duty Cycle Operation | Enables lowest possible dropout - maintains regulation down to VIN ≈ VOUT + IO×(rDS(on) + RL) - critical for end-of-battery-life operation. |
| PFM/PWM Auto-Transition | Seamlessly switches between high-efficiency PFM (light load) and low-noise PWM (heavy load) based on output current - no external control needed. |
| Integrated MOSFETs | P-channel (165 mΩ typ) and N-channel (145 mΩ typ) switches eliminate external FETs and gate drivers - reduces BOM count and layout complexity. |
| Extended Temperature Range | –55°C to 125°C operation with full electrical characterization - validated via HAST, temperature cycling, and electromigration testing. |
| Low-Noise PWM Mode | SYNC = HIGH forces constant 1 MHz switching - eliminates frequency variation and simplifies EMI filtering for sensitive analog/RF subsystems. |
Applications
| Avionics Power Distribution | Satellite Onboard Computer |
|---|---|
Use Scenario: Regulating 12 V bus to 3.3 V for flight computer I/O and memory interfaces in LEO satellite payloads. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 3.3 V at up to 1.2 A with radiation-tolerant operation. Use Value: 92% efficiency at 600 mA minimizes thermal load in sealed enclosures; 100% duty cycle extends usable battery/solar array range. |
Use Scenario: Powering FPGA configuration and core logic in radiation-hardened onboard computers requiring long-term reliability. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured for 1.2 V core supply with precise feedback via external divider. Use Value: 20 µA quiescent current in PFM mode preserves energy during dormant phases; PG signal validates rail stability before boot sequence. |
| Spacecraft Telemetry Module | Defense Radar Signal Processor |
Use Scenario: Generating 5 V for RF front-end ADCs and DACs in telemetry transceivers operating across extreme thermal cycles. IC Role / Device Role / Timing Role: Fixed-output variant-compatible regulator (via FB divider) providing low-noise, low-ripple 5 V supply synchronized to system clock. Use Value: SYNC pin enables synchronization to 1.2 MHz master clock - eliminates beat frequencies and eases EMI compliance in narrowband bands. |
Use Scenario: Supplying 1.8 V to high-speed digital signal processors in airborne radar systems where thermal margin is constrained. IC Role / Device Role / Timing Role: High-current synchronous buck delivering 1.5 A with overtemperature shutdown and PG fault reporting. Use Value: Overtemperature protection triggers at 145°C - prevents thermal runaway in conduction-cooled chassis; LBO monitors backup battery health. |
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 |
|---|---|---|---|
| TPS62111QRSAREP | Fixed 3.3 V output; no FB divider required; same pinout and thermal performance. | Eliminates external resistors but lacks output flexibility; suitable only where 3.3 V is mandatory. | Select when board space or BOM simplicity outweighs need for adjustable voltage. |
| LMZ12003TZE/NOPB | 3 A integrated power module in 10-pin TO-PMOD; includes inductor; higher max current but larger footprint. | Reduces design risk for high-current loads but occupies ~3× more PCB area; not QFN-packaged. | Choose when output current >1.5 A or design schedule favors module-based implementation over discrete buck. |
Compared with TPS62110QRSAREP, TPS62111QRSAREP offers plug-and-play 3.3 V regulation with identical reliability and thermal specs, while LMZ12003TZE/NOPB trades package size and integration level for higher current capability - making TPS62110QRSAREP optimal for space-constrained, adjustable-voltage, radiation-tolerant point-of-load designs.
Availability
TPS62110QRSAREP is available at Aetrix Electronics and suitable for avionics power distribution, satellite onboard computers, spacecraft telemetry modules, and defense radar signal processors requiring stable component supply across extended temperature and radiation environments.
Supply support for TPS62110QRSAREP 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 aerospace, defense, and industrial markets.
The TPS6211x-EP product line delivers radiation-tolerant, extended-temperature synchronous buck converters designed for mission-critical power management in spaceflight and harsh-environment electronics.
FAQ
What is the minimum input voltage required for TPS62110QRSAREP to start regulation?
The TPS62110QRSAREP has an undervoltage lockout (UVLO) threshold of 2.8 V (falling) to 3.1 V (rising). Regulation begins once input voltage exceeds 3.1 V. Below 2.8 V, the device remains disabled to prevent unstable operation. This ensures reliable startup from partially discharged batteries or fluctuating bus voltages in aerospace systems.
How does the SYNC pin affect TPS62110QRSAREP efficiency and noise performance?
When SYNC is pulled HIGH (>1.5 V), TPS62110QRSAREP operates in forced PWM mode with fixed frequency (800–1400 kHz), reducing output ripple and enabling predictable EMI filtering - ideal for noise-sensitive analog/RF circuits. When SYNC is LOW, it enters PFM mode, dropping quiescent current to 20 µA and improving light-load efficiency at the cost of variable switching frequency.
Can TPS62110QRSAREP support 100% duty cycle operation, and what design conditions enable it?
Yes, TPS62110QRSAREP supports true 100% duty cycle operation to minimize dropout. This occurs automatically when VIN approaches VOUT, provided the load current and MOSFET RDS(on) allow sufficient headroom: VIN(min) = VOUT + IO × (rDS(on) + RL). It is especially valuable in battery-powered avionics nearing end-of-discharge.
What is the role of the LBI and LBO pins on TPS62110QRSAREP, and how are they used?
The LBI (Low-Battery Input) pin senses external voltage thresholds; when voltage falls below 1.256 V (with 25 mV hysteresis), the LBO (Low-Battery Output) pin pulls low as an open-drain flag. This enables autonomous battery health monitoring in spacecraft telemetry without additional supervisory ICs - critical for unattended long-duration missions.
Does TPS62110QRSAREP require external compensation components?
No, TPS62110QRSAREP uses internal compensation optimized for standard 1–2.2 µH inductors and 22 µF ceramic output capacitors. No external compensation network is needed - simplifying layout, reducing component count, and ensuring stability across the full operating range without tuning.
TPS62110QRSAREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
TPS62110QRSAREP FAQ
1.How can I place an order for TPS62110QRSAREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62110QRSAREP 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 TPS62110QRSAREP reliable?
The price and inventory of TPS62110QRSAREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62110QRSAREP is usually 5 days.
3.What payment methods are accepted for TPS62110QRSAREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62110QRSAREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62110QRSAREP?
TPS62110QRSAREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62110QRSAREP 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 TPS62110QRSAREP?
For technical support, including TPS62110QRSAREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62110QRSAREP requirements.
6.How does Aetrix verify that TPS62110QRSAREP is sourced from the original manufacturer or authorized distributors?
All TPS62110QRSAREP 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 TPS62110QRSAREP meets industry standards.
7.What is the process for return or replacement of TPS62110QRSAREP?
All TPS62110QRSAREP units undergo pre-shipment inspection (PSI). If there is an issue with TPS62110QRSAREP, 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 TPS62110QRSAREP part is unused and in its original packaging.
Return procedure for TPS62110QRSAREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62110QRSAREP Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
