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Texas Instruments TPS62110RSATG4
- Part No.:
- TPS62110RSATG4
- Manufacturer:
- Texas Instruments
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
TPS62110RSATG4.pdf
- Description:
- IC REG BUCK ADJ 1.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,485
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Product details
Overview
TPS62110RSATG4 from Texas Instruments is an adjustable-output, synchronous step-down DC-DC converter optimized for 3.1–17 V input systems requiring up to 1.5 A output current, 95% peak efficiency, 1 MHz fixed-frequency PWM operation, and PFM/PWM hybrid mode for light-load efficiency. It serves as a primary point-of-load regulator in battery-powered industrial handhelds and 12-V rail systems.
For engineers reviewing the TPS62110RSATG4 datasheet, TPS62110RSATG4 pinout, TPS62110RSATG4 application, or TPS62110RSATG4 equivalent, key selection criteria include its 1.153 V feedback reference, 20 µA quiescent current, 16-pin VQFN (4 mm × 4 mm) package with exposed thermal pad, and support for external clock synchronization up to 1.4 MHz.
Technical Context
The TPS62110RSATG4 implements voltage-mode control with input-voltage feedforward for fast transient response and stable regulation using small ceramic capacitors. Its dual-MOSFET synchronous architecture integrates a 165 mΩ P-channel high-side switch and 145 mΩ N-channel low-side rectifier, enabling 100% duty cycle for ultra-low dropout operation.
It supports three functional modes: forced PWM (SYNC = HIGH), PFM/PWM auto-switching (SYNC = GND), and shutdown (EN = LOW). The device includes integrated undervoltage lockout (2.8–3.1 V threshold), thermal shutdown (145 °C), overcurrent protection (2.1–2.6 A limit), and a precision 1.256 V low-battery comparator with 25 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.1 V to 17 V - supports wide-input industrial and multi-cell Li-ion battery systems without pre-regulation. |
| Output Voltage Range | Adjustable 1.153 V to 16 V - set via external resistor divider; 1.153 V feedback reference enables precise low-voltage rails. |
| Max Output Current | 1.5 A at VIN ≥ 6 V - sufficient for FPGA I/O, microcontroller cores, and DSP power domains. |
| Switching Frequency | 1 MHz typical (800–1400 kHz sync range) - enables compact 6.8 µH inductors and 22 µF ceramic output capacitors. |
| Quiescent Current | 20 µA typical - extends battery life in always-on sensor nodes and portable instrumentation. |
| Efficiency Peak | 95% at 600 mA - achieved via synchronous rectification and low RDS(on) MOSFETs (165/145 mΩ). |
| Thermal Protection | 145 °C shutdown with 10 °C hysteresis - ensures reliability under sustained high-power or poor PCB thermal design. |
Pinout & Package
TPS62110RSATG4 is housed in a 16-pin VQFN (RSA) package measuring 4.00 mm × 4.00 mm with an exposed thermal pad soldered to AGND for optimal thermal performance and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1, 16) | Power Ground | Low-impedance return path for high-current switching node; must be connected directly to input/output capacitor ground planes. |
| VIN (2, 3) | Main Power Input | High-current input for power stage; requires local 10 µF ceramic decoupling close to pins. |
| EN (4) | Enable Control | Active-high logic input; <2 µA shutdown current when pulled low; must not float per datasheet. |
| SYNC (5) | Mode & Clock Control | Configures operation: GND = PFM/PWM auto-switching; HIGH = forced PWM; external CMOS clock input (0.8–1.4 MHz). |
| LBO (6) | Open-Drain Alert | Low-battery indicator output; sinks 1 mA; requires external pullup to VO or another rail ≤17 V. |
| LBI (7) | Analog Monitor Input | Monitors battery or input rail via resistive divider; 1.256 V ±1.5% trip point with 25 mV hysteresis. |
| VINA (8) | Analog Supply Input | Provides clean bias for internal analog circuits; separate from high-noise VIN to improve PSRR. |
| AGND (9) | Analog Ground | Reference for FB, LBI, SYNC, EN; must be tied to PGND and GND at single point near device. |
| FB (10) | Feedback Input | Connects to resistor divider for adjustable output; 1.153 V reference sets output voltage (VO = 1.153 × (1 + R1/R2)). |
| GND (11, 12) | Signal Ground | Reference for control logic and soft-start circuitry; connects to AGND and PGND at star point. |
| PG (13) | Open-Drain Status | Power-good signal active high when VO > 98.4% of nominal; requires external pullup to VO. |
| SW (14, 15) | Switch Node | Connection point for external inductor; carries high di/dt switching current; layout critical for EMI. |
| Exposed Pad | Thermal & Electrical | Soldered to AGND plane for thermal dissipation (RθJB = 16.3 °C/W) and improved EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| PFM/PWM Hybrid Mode | Maintains >85% efficiency down to 100 µA load by automatically switching to pulse-frequency modulation at light loads. |
| 100% Duty Cycle Operation | Enables dropout as low as 100 mV (e.g., 3.3 V out from 3.4 V in), critical for end-of-battery-life operation. |
| Integrated Low-Battery Detector | Eliminates need for external supervisor IC; programmable trip via resistor divider with 1.256 V reference and 25 mV hysteresis. |
| Soft-Start with Prebias Support | Digital 1-ms startup (typical) with monotonic ramp; safely starts into precharged outputs without reverse current. |
| Robust Protection Suite | Includes undervoltage lockout (2.8 V min), overcurrent limit (2.4 A typ), and thermal shutdown (145 °C) with automatic recovery. |
Applications
| Industrial Handheld Scanners | Point-of-Load Regulation from 12-V Buses |
|---|---|
Use Scenario: Portable barcode scanners powered by 3-cell Li-ion batteries (9–12.6 V) requiring stable 3.3 V for image sensor and 1.2 V for ARM Cortex-M core. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3 V and 1.2 V rails; manages dynamic load steps during laser activation and image capture. Use Value: 95% efficiency extends runtime; 20 µA quiescent current preserves battery during sleep; PFM mode maintains >80% efficiency at standby currents <1 mA. | Use Scenario: Industrial PLC I/O modules deriving 5 V and 3.3 V from centralized 12-V backplane supply with strict ripple and transient requirements. IC Role / Device Role / Timing Role: Local point-of-load converter replacing linear regulators; provides fast transient response to digital I/O switching noise. Use Value: 1 MHz switching enables <10 µs load-step response; synchronous rectification reduces heat rise vs. diode-based solutions; 16-pin VQFN simplifies layout on dense control boards. |
| Medical Patient Monitors | Test & Measurement Equipment |
Use Scenario: Battery-backed portable ECG units needing ultra-low-noise 2.5 V analog supply and 1.8 V digital rail, operating across temperature (-40°C to +85°C). IC Role / Device Role / Timing Role: Dual-rail power source with independent feedback paths; operates in forced PWM mode (SYNC = HIGH) to eliminate PFM noise in analog sections. Use Value: 1.153 V reference enables accurate 2.5 V output (±2% tolerance); thermal shutdown protects against enclosure overheating; VQFN package meets IPC-7351B footprint standards. | Use Scenario: Benchtop oscilloscopes requiring isolated, low-noise 3.3 V for ADC front-end and 5 V for FPGA configuration, with minimal board space. IC Role / Device Role / Timing Role: Compact, high-efficiency buck converter placed adjacent to sensitive analog circuitry; uses external clock sync to avoid beat frequencies with sampling clocks. Use Value: Synchronization to 1.25 MHz system clock eliminates switching noise coupling into 12-bit ADC; 4 mm × 4 mm VQFN fits tight layout constraints; PG signal validates rail stability before measurement initiation. |
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 |
|---|---|---|---|
| TPS62113RSAT | Same pinout and electrical specs, but includes enhanced LBI comparator with 10 µA quiescent current in undervoltage-hold state. | Preferred for battery systems requiring precise, low-power undervoltage shutdown prior to full enable. | Select TPS62113RSAT only if the enhanced LBI functionality (EN-controlled bandgap enable) is required; otherwise TPS62110RSATG4 offers identical regulation and protection. |
| LMZ14201HRTJT | Integrated inductor module (42 V max input, 1 A max); larger 7 mm × 7 mm × 4.3 mm package; no SYNC or LBI pins. | Better for designers prioritizing layout simplicity and EMI reduction over component count and flexibility. | Choose LMZ14201HRTJT when board space allows for module footprint and design goals emphasize rapid prototyping and reduced BOM risk over fine-grained power sequencing control. |
Compared with TPS62113RSAT, TPS62110RSATG4 lacks the enhanced LBI hold mode but matches all regulation, efficiency, and protection specs; compared with LMZ14201HRTJT, it offers greater design flexibility (adjustable output, SYNC, PG, LBO) and smaller footprint, at the cost of external inductor placement and layout sensitivity.
Availability
TPS62110RSATG4 is available at Aetrix Electronics and suitable for industrial handheld scanners, point-of-load regulation from 12-V buses, and medical patient monitors requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for TPS62110RSATG4 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 technologies, with decades of expertise in high-reliability DC-DC conversion.
The TPS6211x product line was designed specifically for high-efficiency, low-noise point-of-load regulation in space-constrained, battery-powered, and industrial systems operating from wide-input voltage rails.
FAQ
What is the recommended input capacitor for TPS62110RSATG4?
The TPS62110RSATG4 requires a minimum 10 µF X5R/X7R ceramic capacitor placed as close as possible to the VIN and VINA pins. TI recommends pairing it with a 1 µF ceramic capacitor for high-frequency noise suppression. Total effective capacitance should exceed 12 µF with low ESR (<20 mΩ) to ensure stable operation under 1.5 A load transients and prevent input voltage droop during switching.
Does TPS62110RSATG4 support prebiased start-up?
Yes, TPS62110RSATG4 supports monotonic prebiased start-up. During startup into a precharged output, the internal soft-start ramp prevents the N-channel MOSFET from turning on until the regulated voltage exceeds the prebias level, eliminating reverse current flow and protecting downstream circuitry. This behavior is confirmed in the datasheet's Soft Start section and validated across –40°C to 85°C.
What is the function of the VINA pin on TPS62110RSATG4?
The VINA pin on TPS62110RSATG4 supplies clean bias voltage to internal analog circuitry-including the error amplifier, reference, and comparators-separately from the noisy power-stage VIN. It must be decoupled with a 1 µF ceramic capacitor and tied to AGND. Using VINA instead of VIN for analog bias improves PSRR and output voltage accuracy, especially under high di/dt load conditions.
Can TPS62110RSATG4 operate with 100% duty cycle, and under what conditions?
Yes, TPS62110RSATG4 supports 100% duty cycle operation when the input voltage drops near the output voltage (e.g., 3.4 V in for 3.3 V out). This feature enables continued regulation during battery discharge or brownout events. It activates automatically when the error amplifier commands maximum on-time, and is enabled by default-no external components or configuration are required.
How does the low-battery detector (LBI/LBO) work on TPS62110RSATG4?
The LBI pin on TPS62110RSATG4 accepts a scaled version of the battery or input voltage via a resistive divider. When LBI falls below 1.256 V ±1.5%, the open-drain LBO pin pulls low after a brief delay. LBO remains high-impedance during shutdown. The detector is disabled when EN = LOW, and LBI must not float-it should be grounded if unused. Hysteresis is fixed at 25 mV.
TPS62110RSATG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
TPS62110RSATG4 FAQ
1.How can I place an order for TPS62110RSATG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62110RSATG4 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 TPS62110RSATG4 reliable?
The price and inventory of TPS62110RSATG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62110RSATG4 is usually 5 days.
3.What payment methods are accepted for TPS62110RSATG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62110RSATG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62110RSATG4?
TPS62110RSATG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62110RSATG4 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 TPS62110RSATG4?
For technical support, including TPS62110RSATG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62110RSATG4 requirements.
6.How does Aetrix verify that TPS62110RSATG4 is sourced from the original manufacturer or authorized distributors?
All TPS62110RSATG4 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 TPS62110RSATG4 meets industry standards.
7.What is the process for return or replacement of TPS62110RSATG4?
All TPS62110RSATG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62110RSATG4, 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 TPS62110RSATG4 part is unused and in its original packaging.
Return procedure for TPS62110RSATG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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