My Inquiry
My Account
Texas Instruments TPS62113RSAR
- Part No.:
- TPS62113RSAR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
TPS62113RSAR.pdf
- Description:
- IC REG BUCK ADJ 1.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,544
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62113RSAR from Texas Instruments is an adjustable-output, 1.5-A synchronous step-down DC-DC converter with 3.1–17 V input range, 1.2–16 V output range, 95% peak efficiency, and integrated P/N-channel MOSFETs. It delivers point-of-load regulation for battery-powered handheld scanners and industrial 12-V rail systems.
For engineers reviewing the TPS62113RSAR datasheet, TPS62113RSAR pinout, TPS62113RSAR application, or TPS62113RSAR equivalent, key selection considerations include its enhanced low-battery detector (LBI), 1-MHz fixed-frequency/PFM hybrid operation, 20-µA quiescent current, and 16-pin VQFN (RSA) package with exposed thermal pad.
Technical Context
The TPS62113RSAR uses voltage-mode PWM control with input-voltage feedforward for fast line/load transient response and stable regulation with small ceramic capacitors. Its dual-mode operation-forced PWM when SYNC = HIGH, PFM/PWM when SYNC = GND-enables high efficiency across 10 µA to 1.5 A load currents.
It integrates a precision 1.256-V LBI comparator with 1.5% trip accuracy and hysteresis, enabling programmable undervoltage shutdown without external supervisors. Thermal shutdown at 145°C and overcurrent protection (2.1–2.6 A limit) ensure robust operation in embedded power rails.
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 standard 12-V/15-V rails without pre-regulation. |
| Output Voltage Range | 1.2 V to 16 V - adjustable via external resistor divider on FB pin; internal reference is 1.153 V. |
| Max Output Current | 1.5 A at VIN ≥6 V - enables single-chip supply for FPGA I/O banks or microcontroller cores. |
| Switching Frequency | 1 MHz (typical), syncable 0.8–1.4 MHz - allows compact 6.8-µH inductor and 22-µF output capacitor. |
| Quiescent Current | 20 µA (typical) - extends battery life in always-on sensor nodes and portable diagnostics. |
| LBI Threshold Accuracy | 1.256 V ±1.5% - enables precise, supervisor-free battery cutoff at defined state-of-charge. |
| Efficiency (Peak) | 95% - achieved at mid-load with 12-V input / 3.3-V output, reducing thermal load in sealed enclosures. |
| Thermal Shutdown | 145°C (typical) - protects against sustained overload or poor PCB heatsinking in industrial environments. |
Pinout & Package
TPS62113RSAR 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 (RθJA = 48.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 2,3) | Power input | High-current path for main switch stage; requires local 10-µF ceramic bypass. |
| VINA (Pin 8) | Analog supply input | Low-noise bias supply for control circuitry; decouple separately from VIN. |
| EN (Pin 4) | Enable control | Active-high logic input; must not float; pulls device into <2-µA shutdown when low. |
| FB (Pin 10) | Feedback node | Connects to resistive divider for adjustable output; disables internal divider in TPS62113. |
| SW (Pins 14,15) | Switch node | Drain connection of internal P/N-MOSFETs; routes to inductor; high dv/dt node. |
| PGND (Pins 1,16) | Power ground | Return path for high-current switching loop; separate from AGND to minimize noise coupling. |
| AGND (Pin 9) | Analog ground | Reference for FB, LBI, PG, SYNC; connect to PGND at single point near exposed pad. |
| LBI (Pin 7) | Low-battery input | High-impedance comparator input (10–100 nA leakage); sets precise UVLO threshold for battery systems. |
| LBO (Pin 6) | Low-battery output | Open-drain alert signal; pulled low when LBI <1.256 V; requires external pullup. |
| PG (Pin 13) | Power-good output | Open-drain status flag; asserts high when VOUT >98.4% nominal; needs pullup to VOUT. |
| SYNC (Pin 5) | Frequency control | CMOS-level input; HIGH forces PWM mode; LOW enables PFM for light-load efficiency. |
| GND (Pins 11,12) | Signal ground | Reference for EN, SYNC, PG, LBO; tie to AGND/PGND at thermal pad. |
| Exposed Pad | Thermal & electrical ground | Must be soldered to AGND plane; primary heat dissipation path and EMI reduction element. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced Low-Battery Detector | TPS62113-specific LBI circuit draws only 10 µA quiescent current while supervising input voltage-eliminates need for external SVS IC in portable designs. |
| PFM/PWM Hybrid Operation | Automatic transition between pulse-frequency modulation (light load) and fixed-frequency PWM (heavy load) maintains >85% efficiency from 10 µA to 1.5 A output current. |
| 100% Duty Cycle Capability | Enables dropout as low as 120 mV at 1.5 A - critical for maintaining regulation during brownout conditions on aging batteries. |
| Synchronization Interface | Accepts external 0.8–1.4 MHz CMOS clock on SYNC pin to eliminate beat frequencies in multi-rail systems or reduce EMI through frequency dithering. |
| Integrated Power MOSFETs | On-chip 165-mΩ P-channel and 145-mΩ N-channel switches reduce BOM count by two discrete FETs and associated gate drivers. |
| Monotonic Prebias Start-Up | Prevents reverse current flow when starting into a precharged output rail - essential for hot-swap and redundant power applications. |
Applications
| Handheld Medical Scanners | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Portable barcode or RFID scanners powered by 3.7-V Li-ion batteries requiring clean 3.3-V and 5-V rails for imaging sensors and MCU. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3-V supply with <20-µA quiescent current to extend battery runtime between charges. Use Value: Enhanced LBI enables accurate end-of-discharge detection at 3.2 V, preventing data corruption during battery swap without external supervisor. | Use Scenario: DIN-rail mounted programmable logic controller with isolated 24-V input powering 5-V logic and 3.3-V communication interfaces. IC Role / Device Role / Timing Role: Point-of-load converter stepping down 12-V intermediate rail to 3.3-V for Ethernet PHY and CAN transceivers. Use Value: 1-MHz switching and small external components (6.8 µH, 22 µF) allow dense PCB layout in space-constrained I/O modules. |
| Test & Measurement Handhelds | Smart Energy Meters |
Use Scenario: Battery-operated multimeters and oscilloscope probes needing ultra-low-noise analog supplies and long shelf life. IC Role / Device Role / Timing Role: Dual-output power stage (using two TPS62113RSARs) generating precision 3.3-V and adjustable 5.0-V rails from single Li-ion cell. Use Value: 95% peak efficiency and 100% duty cycle minimize voltage drop during pulse loads from ADC sampling bursts. | Use Scenario: ANSI C12.22-compliant electricity meters with backup supercapacitor and real-time clock requiring fail-safe power sequencing. IC Role / Device Role / Timing Role: Main system regulator with LBI monitoring supercap voltage to trigger graceful shutdown before RTC loss. Use Value: Programmable LBI threshold (1.256 V ±1.5%) ensures consistent cutoff across temperature and unit-to-unit variation without calibration. |
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 |
|---|---|---|---|
| TPS62110RSAR | Same pinout and core specs, but lacks enhanced LBI function; uses standard LBO-only low-battery detection. | Not suitable where programmable undervoltage shutdown is required; acceptable for systems with external supervisor or fixed-cutoff needs. | Select TPS62110RSAR only if LBI functionality is unused and cost optimization is prioritized. |
| TPS63020DSJR | Buck-boost topology; 1.8–5.5 V input; 2.5–5.5 V output; 2-A capability; higher quiescent current (30 µA). | Required when input voltage may fall below output (e.g., single-cell Li-ion powering 3.3-V rail); adds complexity for pure step-down use cases. | Choose TPS63020DSJR only when VIN can dip below VOUT; otherwise TPS62113RSAR offers superior efficiency and simpler design. |
Compared with TPS62110RSAR, the TPS62113RSAR provides verified LBI-based undervoltage supervision with 10-µA active quiescent current, eliminating external SVS components. Against TPS63020DSJR, it delivers higher efficiency in pure step-down configurations and lower EMI due to fixed 1-MHz operation without boost-mode transitions.
Availability
TPS62113RSAR is available at Aetrix Electronics and suitable for handheld medical scanners, industrial PLC I/O modules, test equipment, smart energy meters, and battery-backed data loggers requiring stable component supply across extended production cycles.
Supply support for TPS62113RSAR 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 digital signal technologies, with decades of expertise in power management ICs.
The TPS6211x product line was designed specifically for high-efficiency, low-noise point-of-load conversion in space-constrained, battery-sensitive applications-from portable instrumentation to industrial automation.
FAQ
What is the key functional difference between TPS62113RSAR and TPS62110RSAR?
The TPS62113RSAR includes an enhanced low-battery input (LBI) comparator that enables programmable undervoltage shutdown with only 10 µA quiescent current, whereas the TPS62110RSAR uses a standard LBO-only detection scheme without supervisor capability. This makes the TPS62113RSAR suitable for battery-powered systems requiring precise, self-contained cutoff without external components. All other electrical and pinout specifications remain identical between the two devices.
Can TPS62113RSAR operate with input voltage below 3.1 V?
No, the TPS62113RSAR has a minimum recommended operating input voltage of 3.1 V per TI's datasheet (SLVS585E). Its undervoltage lockout (UVLO) activates below 2.8 V (min), and startup requires ≥3.4 V (worst case). Attempting operation below 3.1 V risks unstable regulation, premature shutdown, or failure to initiate soft-start. For sub-3-V applications, consider TI's TPS630xx buck-boost family instead of the TPS62113RSAR.
How does the SYNC pin affect efficiency and noise performance of TPS62113RSAR?
When SYNC is pulled HIGH, the TPS62113RSAR operates in forced PWM mode at fixed frequency (1 MHz or externally synchronized), ensuring constant switching noise for easier EMI filtering but reducing light-load efficiency. When SYNC is tied to GND, it enters PFM/PWM hybrid mode, skipping pulses at light loads to maintain >85% efficiency down to 10 µA - at the cost of variable-frequency noise. The choice depends on whether predictable EMI profile or ultra-low IQ dominates the design priority.
What is the maximum output current capability of TPS62113RSAR under real-world thermal conditions?
The TPS62113RSAR supports up to 1.5 A continuous output current when VIN ≥6 V and PCB layout includes proper thermal management: full soldering of the exposed thermal pad to a ≥1-in² AGND copper area, and ambient temperature ≤60°C. At 85°C ambient or with minimal copper, derating applies - e.g., ~1.2 A with 2-layer board and no airflow. Always verify junction temperature using RθJA = 48.2°C/W and measured power dissipation in the final layout.
Is TPS62113RSAR compatible with prebiased output start-up?
Yes, the TPS62113RSAR supports monotonic prebias start-up: when enabled into a precharged output, the internal N-channel MOSFET remains off until the soft-start ramp exceeds the existing VOUT voltage, preventing reverse current flow and output voltage overshoot. This behavior is confirmed in the datasheet's Section 9.4.1 and makes the TPS62113RSAR suitable for hot-swap and redundant power architectures where output rails may be live prior to enable.
TPS62113RSAR 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)
TPS62113RSAR FAQ
1.How can I place an order for TPS62113RSAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62113RSAR 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 TPS62113RSAR reliable?
The price and inventory of TPS62113RSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62113RSAR is usually 5 days.
3.What payment methods are accepted for TPS62113RSAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62113RSAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62113RSAR?
TPS62113RSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62113RSAR 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 TPS62113RSAR?
For technical support, including TPS62113RSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62113RSAR requirements.
6.How does Aetrix verify that TPS62113RSAR is sourced from the original manufacturer or authorized distributors?
All TPS62113RSAR 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 TPS62113RSAR meets industry standards.
7.What is the process for return or replacement of TPS62113RSAR?
All TPS62113RSAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62113RSAR, 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 TPS62113RSAR part is unused and in its original packaging.
Return procedure for TPS62113RSAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62113RSAR 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…
