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Texas Instruments TPS62110RSAR
- Part No.:
- TPS62110RSAR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
TPS62110RSAR.pdf
- Description:
- IC REG BUCK ADJ 1.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,742
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Product details
Overview
TPS62110RSAR from Texas Instruments is a synchronous step-down DC-DC converter with adjustable 1.2 V to 16 V output, 3.1 V to 17 V input range, up to 1.5-A output current, and 95% peak efficiency-designed for point-of-load regulation in battery-powered handheld scanners and industrial PDAs.
For engineers reviewing the TPS62110RSAR datasheet, TPS62110RSAR pinout, TPS62110RSAR application, or TPS62110RSAR equivalent, key selection considerations include its PFM/PWM hybrid operation mode, 1-MHz nominal switching frequency, 20-µA quiescent current, and 16-pin VQFN (RSA) package with exposed thermal pad for thermal management in space-constrained designs.
Technical Context
The TPS62110RSAR implements voltage-mode PWM control with input-voltage feedforward for fast line/load transient response. Its dual MOSFET power stage integrates N- and P-channel switches with 165–490 mΩ P-FET and 145–200 mΩ N-FET ON-resistance depending on VIN and load.
It supports three functional modes: forced PWM (SYNC = HIGH), PFM/PWM auto-switching (SYNC = GND), and shutdown (EN = LOW). The device enters thermal shutdown at 145°C and features undervoltage lockout with 2.8–3.1 V threshold and 300-mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.1 V to 17 V - supports 2–4-cell Li-ion batteries and 12-V/15-V rails without external pre-regulation |
| Output Voltage | Adjustable 1.2 V to 16 V via external resistor divider - enables flexible system-level rail generation |
| Max Output Current | 1.5 A at VIN ≥ 6 V - sufficient for powering FPGA I/O banks or microcontroller cores |
| Switching Frequency | 900–1100 kHz (internal) or 800–1400 kHz (synchronized) - allows compact 6.8-µH inductor and 22-µF ceramic output capacitor |
| Quiescent Current | 20 µA typical - extends battery life in always-on monitoring circuits |
| Efficiency | 92% at 12 VIN/3.3 VOUT/600 mA - reduces thermal load in sealed enclosures |
| Thermal Shutdown | 145°C typical - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
TPS62110RSAR uses a 4.00 mm × 4.00 mm, 16-pin VQFN (RSA) package with exposed thermal pad soldered to AGND for enhanced thermal dissipation and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 9) | Analog ground reference | Must be connected to PGND and GND plane to minimize noise coupling into feedback path |
| EN (Pin 4) | Enable control input | Logic-high (>1.3 V) enables regulation; logic-low (<0.3 V) reduces supply current to <2 µA |
| FB (Pin 10) | Feedback node | Connects to external resistive divider for output voltage setting; internal 1.153-V reference referenced here |
| GND (Pins 11, 12) | Digital ground return | Provides low-impedance return path for control circuitry; must be tied to PGND at single point |
| LBI (Pin 7) | Low-battery monitor input | Accepts resistive divider from battery; trips at 1.256 V ±1.5% to signal end-of-life condition |
| LBO (Pin 6) | Open-drain low-battery output | Pulled low when LBI falls below threshold; requires external pullup to VO or another rail ≤17 V |
| PG (Pin 13) | Open-drain power-good flag | Asserts high when VO reaches ≥98.4% of nominal; needs pullup resistor to VO for valid status reporting |
| PGND (Pins 1, 16) | Power ground return | Carries high-frequency switch current; must be routed directly to input/output capacitors and inductor |
| SW (Pins 14, 15) | Switch node | Connects to inductor; carries high dv/dt switching waveform - requires tight layout and minimal trace length |
| VIN (Pins 2, 3) | Main power input | Supplies power stage; requires local 10-µF ceramic capacitor placed near pins to suppress ripple |
| VINA (Pin 8) | Analog supply input | Provides bias for control circuitry; decoupled with 1-µF ceramic capacitor to reduce noise sensitivity |
| SYNC (Pin 5) | External clock sync input | Enables synchronization to 0.8–1.4 MHz CMOS clock; forces fixed-frequency PWM when high |
| Exposed Thermal Pad | Thermal and electrical ground | Must be soldered to AGND plane to achieve RθJB = 16.3°C/W and ensure safe operation at full load |
Key Features
| Feature | Design Value |
|---|---|
| PFM/PWM Hybrid Operation | Maintains >85% efficiency down to 100 µA load by automatically switching to pulse-frequency modulation at light loads |
| 100% Duty Cycle Capability | Enables dropout operation as low as VOUT + 0.3 V, critical for maintaining regulation during brownout conditions |
| Integrated Power MOSFETs | Eliminates need for external high-side and low-side switches - reduces BOM count and layout complexity |
| Soft-Start Circuit | Digitally ramps switch current limit in 250-µs steps (300 mA → 600 mA → 1200 mA → 2.4 A) to prevent input voltage sag during startup |
| Overcurrent & Thermal Protection | Current-limit threshold of 2100–2600 mA and thermal shutdown at 145°C provide robust fault tolerance without external components |
Applications
| Handheld Scanners | Industrial PDAs |
|---|---|
Use Scenario: Battery-powered barcode scanner requiring stable 3.3-V rail for image sensor and MCU during intermittent high-current decode bursts. IC Role / Device Role / Timing Role: Primary step-down regulator delivering regulated 3.3 V from 7.4-V dual-cell Li-ion pack with fast load transient response. Use Value: 92% efficiency at 600 mA minimizes heat buildup inside plastic housing; 20-µA quiescent current extends standby time between scans. | Use Scenario: Ruggedized portable data terminal operating in warehouses with wide ambient temperature range (–40°C to 85°C). IC Role / Device Role / Timing Role: Point-of-load converter generating 1.8-V core voltage for ARM Cortex-A8 processor from 12-V backplane supply. Use Value: 16-pin VQFN package enables compact layout; thermal shutdown and UVLO protect against field failures due to cold-start or overtemperature events. |
| Medical Handheld Monitors | Test & Measurement Probes |
Use Scenario: Portable ECG monitor powered by rechargeable Li-ion battery needing ultra-low-noise 5-V analog supply for ADC front-end. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured for 5-V output with SYNC pin tied high to enforce fixed-frequency PWM mode. Use Value: Forced PWM eliminates variable-frequency noise that could couple into sensitive analog signal paths, ensuring clean 16-bit ADC performance. | Use Scenario: Battery-operated oscilloscope probe with integrated signal conditioning requiring multiple isolated rails (±5 V, 3.3 V) from single 9-V alkaline source. IC Role / Device Role / Timing Role: Primary buck stage stepping 9 V down to 3.3 V for digital logic, enabling subsequent charge-pump generation of negative rails. Use Value: 3.1-V minimum input allows regulation until battery depletes to ~3.3 V; 100% duty cycle maintains output during final discharge phase. |
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 |
|---|---|---|---|
| TPS62113RSAR | Includes enhanced LBI comparator with 10-µA quiescent current in supervisor-only mode; identical pinout and electrical specs otherwise | Preferred where battery voltage supervision must occur before full enablement to maximize shelf life | Select TPS62113RSAR only if early-stage battery monitoring with sub-20-µA wake-up capability is required |
| LMZ12003TZX | 3-A integrated power module with built-in inductor; larger 12.5-mm × 10.5-mm × 4.5-mm package; no LBI/LBO/PG pins | Suitable for higher-current applications where board area is less constrained than component height | Choose LMZ12003TZX when output current exceeds 1.5 A or when design team prefers module-level qualification over discrete buck design |
Compared with TPS62113RSAR, the TPS62110RSAR lacks pre-enable LBI supervision but offers identical regulation performance and footprint; compared with LMZ12003TZX, it provides greater flexibility in external component selection and lower profile at the cost of additional layout effort for magnetics and filtering.
Availability
TPS62110RSAR is available at Aetrix Electronics and suitable for handheld scanners, industrial PDAs, and medical monitors requiring stable component supply across extended production lifecycles.
Supply support for TPS62110RSAR 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The TPS6211x product line was designed specifically for high-efficiency, low-noise point-of-load conversion in portable and battery-powered systems where small size, wide input range, and adaptive power-save operation are essential.
FAQ
What is the maximum output current capability of the TPS62110RSAR under typical operating conditions?
The TPS62110RSAR delivers up to 1.5 A output current when input voltage is ≥6 V, decreasing to 1.2 A at VIN ≥4.3 V and 500 mA at VIN ≥3.5 V. This dependency is defined by thermal limits and MOSFET RDS(ON) characteristics - actual achievable current must be verified using the thermal resistance data (RθJA = 48.2°C/W) and ambient temperature constraints in the target PCB layout. The TPS62110RSAR datasheet specifies these derating curves in Section 8.5.
Does the TPS62110RSAR support prebiased start-up, and how does it behave during this condition?
Yes, the TPS62110RSAR supports monotonic prebiased start-up. During this mode, the internal soft-start ramp begins from zero and the N-channel MOSFET remains off until the regulated output voltage exceeds the prebias level. This prevents reverse current flow into the output capacitor and ensures controlled voltage rise without overshoot. The TPS62110RSAR achieves this behavior through its digital soft-start architecture and gate-drive logic, as documented in Section 9.4.1 of the SLVS585E datasheet.
How does the SYNC pin affect efficiency and noise performance in the TPS62110RSAR?
When SYNC is pulled high, the TPS62110RSAR operates exclusively in fixed-frequency PWM mode, eliminating PFM switching noise but increasing light-load quiescent current to ~23 µA. When SYNC is grounded, it enables automatic PFM/PWM transition, reducing quiescent current to 20 µA at light loads while introducing variable-frequency spectral content. The choice impacts EMI filter design and battery runtime - the TPS62110RSAR's dual-mode capability allows trade-off optimization per application requirements.
Can the TPS62110RSAR be used with an input voltage below 3.1 V, and what happens near the UVLO threshold?
No - the TPS62110RSAR has a guaranteed minimum operating input voltage of 3.1 V per recommended conditions, with undervoltage lockout activating at 2.8–3.1 V (typical 3.0 V). Below this threshold, the device disables switching, pulls PG low, and draws <2 µA in shutdown. Attempting operation at 3.0 V may result in unstable regulation or oscillation; the TPS62110RSAR requires VIN ≥3.4 V for reliable startup per datasheet characterization.
What is the role of the exposed thermal pad on the TPS62110RSAR package, and how must it be implemented on the PCB?
The exposed thermal pad on the TPS62110RSAR serves as both thermal conduction path and electrical connection to AGND. It must be soldered to a dedicated AGND copper pour with ≥4 thermal vias (0.3-mm diameter) connecting to inner or bottom ground planes to achieve the specified RθJB = 16.3°C/W. Failure to properly connect this pad results in junction temperature rise exceeding specifications - the TPS62110RSAR thermal performance degrades significantly without this implementation, risking premature thermal shutdown under load.
TPS62110RSAR 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:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
TPS62110RSAR FAQ
1.How can I place an order for TPS62110RSAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62110RSAR 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 TPS62110RSAR reliable?
The price and inventory of TPS62110RSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62110RSAR is usually 5 days.
3.What payment methods are accepted for TPS62110RSAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62110RSAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62110RSAR?
TPS62110RSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62110RSAR 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 TPS62110RSAR?
For technical support, including TPS62110RSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62110RSAR requirements.
6.How does Aetrix verify that TPS62110RSAR is sourced from the original manufacturer or authorized distributors?
All TPS62110RSAR 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 TPS62110RSAR meets industry standards.
7.What is the process for return or replacement of TPS62110RSAR?
All TPS62110RSAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62110RSAR, 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 TPS62110RSAR part is unused and in its original packaging.
Return procedure for TPS62110RSAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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