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Texas Instruments TPS62113RSAT
- Part No.:
- TPS62113RSAT
- Manufacturer:
- Texas Instruments
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
TPS62113RSAT.pdf
- Description:
- IC REG BUCK ADJ 1.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,773
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Product details
Overview
TPS62113RSAT from Texas Instruments is a 17-V, 1.5-A synchronous step-down DC-DC converter with adjustable 1.2 V to 16 V output, 3.1 V to 17 V input range, and PFM/PWM hybrid operation enabling up to 95% efficiency at light loads. It integrates N- and P-channel MOSFETs and features enhanced low-battery detection for battery-powered industrial handhelds and point-of-load systems.
For engineers reviewing the TPS62113RSAT datasheet, TPS62113RSAT pinout, TPS62113RSAT application, or TPS62113RSAT equivalent, key selection criteria include its 16-pin VQFN package, 1.256 V LBI threshold with 25 mV hysteresis, 10 µA quiescent current in enhanced LBI mode, and 1 MHz nominal switching frequency with external synchronization capability up to 1.4 MHz.
Technical Context
The TPS62113RSAT uses voltage-mode control with input-voltage feedforward for fast line/load transient response and stable regulation with small ceramic capacitors. Its dual-MOSFET synchronous architecture eliminates external diode losses and supports 100% duty cycle for ultra-low dropout operation.
It implements an enhanced low-battery detector that activates only the bandgap reference until LBI exceeds 1.256 V-reducing supply current to 10 µA-then fully enables switching. Thermal shutdown triggers at 145°C (typ), and soft-start limits inrush current via stepped current limiting (300/600/1200 mA).
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 regulators |
| Output Voltage Range | Adjustable 1.2 V to 16 V - set via external resistor divider on FB pin; internal feedback disabled |
| Max Output Current | 1.5 A at VIN ≥ 6 V - sufficient for FPGA core rails and DSP power domains |
| Switching Frequency | 1 MHz (typ), syncable 0.8–1.4 MHz - enables compact 6.8 µH inductor and 22 µF output capacitor |
| Quiescent Current | 10 µA (typ) in enhanced LBI mode - extends battery life in always-on monitoring circuits |
| LBI Threshold | 1.256 V ±1.5% with 25 mV hysteresis - precise undervoltage supervision without external SVS |
| Efficiency | Up to 95% - achieved via synchronous rectification and PFM/PWM mode transition below ~100 mA load |
| Thermal Shutdown | 145°C (typ), recovery at ~135°C - protects against sustained overload or poor PCB thermal design |
Pinout & Package
TPS62113RSAT is housed in a 4.00 mm × 4.00 mm, 16-pin VQFN (RSA) package with exposed thermal pad soldered to AGND for optimal thermal performance and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 9) | Analog ground reference | Must be connected to system GND and PGND to minimize noise coupling into feedback path |
| EN (Pin 4) | Enable control input | Logic high enables converter; logic low reduces supply current to <2 µA; must not float |
| FB (Pin 10) | Feedback input | Connects to external resistive divider for adjustable output; internal divider disabled |
| GND (Pins 11, 12) | Ground return | Common reference for analog and digital circuitry; ties to PGND and AGND |
| LBI (Pin 7) | Low-battery input | Monitors battery voltage via divider; trip at 1.256 V initiates enhanced shutdown sequence |
| LBO (Pin 6) | Low-battery open-drain output | Pulled low when LBI < 1.256 V; requires external pullup to VO or other rail ≤17 V |
| PG (Pin 13) | Power-good open-drain output | Asserts high when VO > 98.4% of nominal; requires external pullup to VO |
| PGND (Pins 1, 16) | Power ground | Primary return path for high-current switch node; must be low-inductance connection to SW |
| SW (Pins 14, 15) | Switch node | Connects to inductor; carries high dv/dt switching waveform; requires tight layout to PGND |
| SYNC (Pin 5) | External clock input | CMOS-level input; HIGH forces PWM-only mode; LOW enables PFM/PWM auto-switching |
| VIN (Pins 2, 3) | Main power input | Supplies power stage; accepts 3.1–17 V; decoupling required near pins |
| VINA (Pin 8) | Analog supply input | Supplies bias circuitry; should be bypassed separately from VIN for noise isolation |
| Exposed Thermal Pad | Thermal and electrical ground | Must be soldered to AGND plane for thermal dissipation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced Low-Battery Detection | Enables bandgap-only operation at 10 µA until LBI crosses 1.256 V, eliminating need for external supervisor IC |
| Synchronous Rectification | Integrated N- and P-channel MOSFETs reduce conduction loss and eliminate external Schottky diode |
| PFM/PWM Hybrid Mode | Automatically transitions to pulse-frequency modulation below ~100 mA load to maintain >85% efficiency |
| 100% Duty Cycle Capability | Supports dropout as low as VIN – VO = 0 V, critical for battery end-of-life operation |
| Soft-Start with Prebias Support | Digital stepped current limiting (300/600/1200 mA) prevents input droop; monotonic start into prebiased outputs |
| Thermal Shutdown with Hysteresis | Shuts down at 145°C (typ), resumes at ~135°C - prevents thermal cycling under marginal cooling |
Applications
| Industrial Handheld Scanners | Point-of-Load Regulation from 12-V Buses |
|---|---|
Use Scenario: Battery-powered barcode scanners requiring long runtime and reliable low-voltage cutoff during Li-ion discharge. IC Role / Device Role / Timing Role: Primary DC-DC regulator converting 3.3–16.8 V battery pack to stable 3.3 V or 5 V system rail while supervising battery health. Use Value: Enhanced LBI function provides precise 1.256 V threshold and 10 µA quiescent current, extending usable battery capacity by avoiding premature shutdown. | Use Scenario: Industrial PLC I/O modules powered from centralized 12 V backplane with strict efficiency and thermal requirements. IC Role / Device Role / Timing Role: Point-of-load converter delivering 1.2–16 V at up to 1.5 A with minimal board space and heat generation. Use Value: Synchronous architecture and 48.2°C/W θJA enable full 1.5 A output without heatsink in 4×4 mm footprint. |
| Portable Medical Monitors | Embedded Computing Systems |
Use Scenario: Portable ECG or pulse oximeter devices needing ultra-low-noise, low-quiescent-power supply for analog front-end and microcontroller. IC Role / Device Role / Timing Role: Main power regulator supplying clean 3.3 V to ADC, op-amps, and MCU with programmable low-battery alert. Use Value: 10 µA quiescent current in enhanced LBI mode and voltage-mode control ensure stable output under dynamic load transients from sensor sampling. | Use Scenario: Ruggedized edge computing gateways using ARM-based SoCs with configurable core voltages. IC Role / Device Role / Timing Role: Adjustable-output buck converter setting core voltage (e.g., 1.1 V, 1.35 V) via FB divider under software control. Use Value: 1.2–16 V output range and 1 MHz switching allow use of small, low-ESR ceramic capacitors compatible with high-speed digital load profiles. |
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 |
|---|---|---|---|
| TPS62110RSAT | Same package and pinout; lacks enhanced LBI - uses standard LBI/LBO only with no 10 µA standby mode | No integrated undervoltage shutdown; requires external supervisor for battery cutoff | Select when LBI functionality is unused or implemented externally |
| TPS63020DSJR | Buck-boost topology; 1.8–5.5 V input; 1.2–5.5 V output; 2 A max; 2.5 MHz switching | Supports input voltages below output (e.g., 2.5 V → 3.3 V); higher frequency enables smaller magnetics | Select when input may dip below regulated output voltage, such as single-cell Li-ion systems |
Compared with TPS62110RSAT, the TPS62113RSAT adds precision LBI supervision with 10 µA standby, while TPS63020DSJR offers buck-boost flexibility at the cost of higher complexity and reduced efficiency in pure step-down scenarios above 5 V input.
Availability
TPS62113RSAT is available at Aetrix Electronics and suitable for industrial handhelds, point-of-load regulation from 12-V buses, and portable medical monitors requiring stable component supply across extended production lifecycles.
Supply support for TPS62113RSAT 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 specializing in analog, embedded processing, and power management ICs with over 50 years of innovation in energy-efficient power conversion.
The TPS6211x product line was designed for high-efficiency, low-noise DC-DC conversion in space-constrained battery-powered and industrial systems, emphasizing wide input range, integrated MOSFETs, and intelligent power-save modes.
FAQ
What is the key functional difference between TPS62113RSAT and TPS62110RSAT?
The TPS62113RSAT features an enhanced low-battery input (LBI) architecture that enables bandgap-only operation at 10 µA quiescent current until the LBI pin exceeds 1.256 V, after which full converter operation begins. In contrast, the TPS62110RSAT uses a standard LBI/LBO implementation without this ultra-low-power enable sequencing. This makes the TPS62113RSAT uniquely suited for battery-powered systems requiring precise, low-power undervoltage supervision without external components.
Does TPS62113RSAT support operation with input voltage lower than output voltage?
No, the TPS62113RSAT is a synchronous step-down (buck) converter only and cannot regulate when input voltage falls below the programmed output voltage. Its minimum dropout is achieved at 100% duty cycle, but it requires VIN ≥ VOUT + voltage drop across internal FETs (typically ~0.2 V at light load). For applications where input may dip below output - such as single-cell Li-ion (2.7–4.2 V) powering a 3.3 V rail - a buck-boost converter like TPS63020DSJR is required instead of the TPS62113RSAT.
What is the recommended layout practice for the exposed thermal pad on TPS62113RSAT?
The exposed thermal pad on the TPS62113RSAT must be soldered directly to a solid AGND copper plane using multiple thermal vias (≥6, 0.3 mm diameter) spaced evenly beneath the pad. TI specifies this connection as mandatory for both thermal dissipation (RθJB = 16.3°C/W) and mechanical reliability. Floating or undersized pads cause junction temperature rise exceeding specifications and risk premature thermal shutdown during 1.5 A continuous operation.
Can TPS62113RSAT be synchronized to an external clock while maintaining PFM mode?
No - when the SYNC pin is driven high (or connected to a valid external clock signal), the TPS62113RSAT disables PFM mode and operates exclusively in forced PWM mode across all load conditions. PFM/PWM auto-switching is only active when SYNC is pulled low (GND). This trade-off ensures deterministic timing for noise-sensitive applications but sacrifices light-load efficiency. Therefore, TPS62113RSAT cannot simultaneously achieve synchronization and PFM operation.
What is the maximum output current capability of TPS62113RSAT at 5 V input?
At VIN = 5 V, the TPS62113RSAT delivers up to 1.2 A continuous output current, as specified in the Electrical Characteristics table (IO = 1200 mA for VI ≥ 4.3 V). This limitation arises from increased conduction losses in the internal P-channel MOSFET at lower input voltages, where RDS(ON) rises to 340 mΩ (typ) at VI = 3.5 V and 490 mΩ at VI = 3 V. Derating is required for ambient temperatures above 25°C or inadequate PCB copper area.
TPS62113RSAT 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)
TPS62113RSAT FAQ
1.How can I place an order for TPS62113RSAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62113RSAT 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 TPS62113RSAT reliable?
The price and inventory of TPS62113RSAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62113RSAT is usually 5 days.
3.What payment methods are accepted for TPS62113RSAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62113RSAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62113RSAT?
TPS62113RSAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62113RSAT 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 TPS62113RSAT?
For technical support, including TPS62113RSAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62113RSAT requirements.
6.How does Aetrix verify that TPS62113RSAT is sourced from the original manufacturer or authorized distributors?
All TPS62113RSAT 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 TPS62113RSAT meets industry standards.
7.What is the process for return or replacement of TPS62113RSAT?
All TPS62113RSAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62113RSAT, 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 TPS62113RSAT part is unused and in its original packaging.
Return procedure for TPS62113RSAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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