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Texas Instruments TPS61012DGSR
- Part No.:
- TPS61012DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61012DGSR.pdf
- Description:
- IC REG BOOST 1.8V 540MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,558
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Product details
Overview
TPS61012DGSR from Texas Instruments is a fixed-output 2.5 V, high-efficiency synchronous boost converter for single- or dual-cell battery systems. It delivers up to 200 mA output current from 0.8 V input, starts reliably at 0.9 V, integrates a 1.3 A switch, and features autodischarge and low-battery detection - used in portable medical diagnostics and wireless headsets.
For engineers reviewing the TPS61012DGSR datasheet, TPS61012DGSR pinout, TPS61012DGSR application, or TPS61012DGSR equivalent, key selection criteria include minimum startup voltage (0.9 V), fixed 2.5 V output tolerance (±2%), shutdown current (1–3 µA), integrated synchronous rectification, and MSOP-10 package compatibility with space-constrained battery-powered designs.
Technical Context
The TPS61012DGSR implements a fixed-frequency (420–780 kHz), current-mode PWM controller with pulse-by-pulse switch current limiting (typ. 0.93 A). Its synchronous rectifier uses integrated NMOS/PMOS switches (rDS(on) ≤ 0.54 Ω) to eliminate external Schottky diodes and achieve >95% peak efficiency.
It operates in powersave mode below ~10 mA load to reduce switching losses, enters UVLO shutdown below ~0.7 V input, and isolates load from battery during shutdown via backgate diode disconnect circuitry - ensuring zero hold-up leakage and enabling clean system reset via autodischarge (300 Ω internal switch, residual VOUT < 0.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.5 V ±2% - eliminates external feedback resistors and ensures stable rail for 2.5 V logic or analog circuitry. |
| Input voltage range | 0.8 V to 3.6 V - supports deep-discharged NiMH/NiCd (0.8 V/cell) and alkaline batteries without brownout. |
| Max output current | 200 mA at VIN ≥ 1.8 V - sufficient to power microcontrollers, sensors, or RF transceivers in portable devices. |
| Startup voltage | 0.9 V into full load - enables operation from nearly depleted single-cell batteries before system reset. |
| Quiescent current | 5–8 µA (VBAT/SW + VOUT) - minimizes battery drain during active standby in always-on monitoring applications. |
| Shutdown current | 1–3 µA - preserves battery charge over extended storage or sleep periods in remote controls and wearables. |
| Oscillator frequency | 420–780 kHz - balances EMI suppression and inductor size; supports small 10 µH shielded inductors (e.g., Sumida CDRH6D38). |
| Switch current limit | 0.93 A typical - sets maximum inductor peak current and defines safe operating area under short-circuit or cold-start conditions. |
Pinout & Package
TPS61012DGSR is housed in a 10-pin MSOP (VSSOP-10) package, 3.0 mm × 3.0 mm body size, with exposed thermal pad for enhanced power dissipation (RθJA = 161.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Chip-enable input | Active-high digital enable; ties to GND for full shutdown with load isolation and autodischarge activation. |
| 2 - COMP | Error amplifier compensation | Connects external R-C-C network to stabilize control loop; critical for transient response and stability with 10–22 µF output capacitors. |
| 3 - FB | Feedback input | No connection required - TPS61012DGSR has internal 2.5 V reference; FB pin left unconnected per datasheet. |
| 4 - GND | Power and signal ground | Common return path for SW, VBAT, and output stage; must be low-impedance and tied to thermal pad. |
| 5 - VOUT | Regulated output | Delivers fixed 2.5 V ±2%; requires 10–47 µF X7R/X5R ceramic output capacitor for ripple suppression and stability. |
| 6 - VBAT | Battery input supply | Accepts 0.8–3.6 V; connects directly to battery anode; feeds internal bias rails and power switches. |
| 7 - SW | Switch node | Drives external 10–33 µH inductor; carries pulsed current up to 0.93 A; requires tight layout to minimize EMI and ringing. |
| 8 - ADEN | Autodischarge enable | Tied to VBAT to activate 300 Ω discharge switch on shutdown; tied to GND to disable autodischarge for memory retention. |
| 9 - LBI | Low-battery detector input | Monitors scaled battery voltage; triggers LBO when input drops below 480–520 mV; must not float - connect to GND if unused. |
| 10 - LBO | Low-battery open-drain output | Active-low flag (VOL ≤ 0.2 V @ 10 µA); requires external pullup to VOUT; signals MCU when battery falls below programmed threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PMOS switches replace external Schottky diode, reducing conduction loss and enabling >95% peak efficiency at 200 mA. |
| Autodischarge function | 300 Ω internal switch discharges output capacitor after shutdown, ensuring residual VOUT < 0.4 V - prevents microcontroller latch-up in medical diagnostics. |
| Load isolation during shutdown | Backgate diode of high-side PMOS is actively disconnected, eliminating battery-to-VOUT leakage - no external MOSFET needed for battery preservation. |
| Powersave mode | Reduces switching frequency at light loads (<10 mA), maintaining >85% efficiency down to 1 mA - extends runtime in intermittent-sensing applications. |
| Low-battery comparator | Programmable 500 mV ±15 mV threshold with 10 mV hysteresis on LBI; enables accurate end-of-life battery detection without external comparators. |
| Antiringing switch | Integrated clamp suppresses inductive kickback at SW node, reducing EMI and eliminating need for external snubber components. |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
|
Use Scenario: Handheld glucose meters and pulse oximeters powered by single alkaline or NiMH cells with deep discharge profiles. IC Role / Device Role / Timing Role: Primary 2.5 V power rail generator; provides regulated supply to ADC, sensor interface, and LCD driver during battery voltage decay from 1.5 V to 0.8 V. Use Value: 0.9 V startup and 200 mA capability ensure uninterrupted measurement cycles even at end-of-life battery voltage; autodischarge guarantees clean power-down reset. |
Use Scenario: Bluetooth audio earpieces requiring compact, low-noise 2.5 V supply for codec and RF front-end. IC Role / Device Role / Timing Role: Synchronous boost regulator delivering stable 2.5 V rail from 1.2 V nominal single-cell input; powers audio DAC and Class-D amplifier. Use Value: >95% efficiency minimizes heat in sealed enclosure; powersave mode extends talk time; antiringing switch reduces RF interference with Bluetooth link. |
| Remote Controls | Pager Systems |
|
Use Scenario: IR and RF remotes using AA/AAA alkaline batteries with long shelf life and infrequent high-current bursts. IC Role / Device Role / Timing Role: Always-on 2.5 V supply for microcontroller and IR LED driver; maintains RTC and wake-up logic during multi-month standby. Use Value: 1–3 µA shutdown current preserves battery for >2 years; 5–8 µA quiescent current enables responsive wake-up without capacitor hold-up. |
Use Scenario: Two-way pagers operating from dual NiMH cells with strict battery life and reliability requirements. IC Role / Device Role / Timing Role: Fixed 2.5 V rail for baseband processor and display; integrates low-battery warning (LBI/LBO) to trigger user alert before failure. Use Value: Programmable LBI threshold enables precise end-of-charge detection; load isolation prevents phantom drain during pager sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61013DGSR | Fixed 2.8 V output (±2%), higher switch current limit (0.95 A typ.), identical pinout and package. | Suitable where system requires 2.8 V I/O or higher VDD for newer low-voltage MCUs; not drop-in for 2.5 V logic interfaces. | Select TPS61013DGSR only if target rail is 2.8 V; verify level-shifting or regulator compatibility for downstream 2.5 V loads. |
| TPS61022DGSR | Higher output current (4 A), wider input (0.5–5.5 V), 2.5 V fixed option, but in 12-pin WSON package - not pin-compatible. | Used in high-power portable instruments needing >200 mA; requires PCB redesign due to different footprint and thermal pad layout. | Choose TPS61022DGSR only when output current demand exceeds 200 mA; expect layout changes and revised compensation network. |
Compared with TPS61013DGSR and TPS61022DGSR, the TPS61012DGSR offers optimal balance of 2.5 V precision, ultra-low shutdown current, and MSOP-10 footprint for space-limited, battery-sensitive applications - whereas TPS61013DGSR shifts voltage level and TPS61022DGSR increases current capacity at the cost of pin compatibility and board redesign.
Availability
TPS61012DGSR is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, remote controls, and pager systems requiring stable component supply across production lifecycles.
Supply support for TPS61012DGSR 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 ICs, with decades of expertise in battery-powered system solutions.
The TPS6101x family was designed specifically for ultra-low-voltage, high-efficiency boost conversion in single- and dual-cell battery applications - prioritizing startup reliability, shutdown integrity, and integration density for portable electronics.
FAQ
What is the exact output voltage and tolerance of the TPS61012DGSR?
The TPS61012DGSR provides a fixed 2.5 V output with a tolerance of ±2% over temperature and line/load conditions. This is achieved via internal resistor divider and bandgap reference - no external feedback components are required. The specification is confirmed in Section 7.5 of the SLVS314F datasheet under "Output voltage" for TPS61012, with typical values of 2.42–2.58 V at 100 mA load.
Does the TPS61012DGSR require an external Schottky diode?
No, the TPS61012DGSR does not require an external Schottky diode. It integrates synchronous rectification using internal NMOS and PMOS switches, which replace the external diode and improve efficiency to >95%. This is explicitly stated in the Features section and Functional Block Diagram of the SLVS314F datasheet.
How does the autodischarge function work on the TPS61012DGSR?
The TPS61012DGSR's autodischarge function activates when ADEN is tied to VBAT and EN is pulled low. An internal 300 Ω switch then discharges the output capacitor, reducing VOUT to < 0.4 V within milliseconds - ensuring clean system reset. If ADEN is grounded, autodischarge is disabled, preserving output voltage for memory retention.
What is the minimum input voltage required for the TPS61012DGSR to start up under load?
The TPS61012DGSR starts up into full load at a minimum input voltage of 0.9 V, as specified in Section 7.5 ("Minimum input voltage for start-up") of the SLVS314F datasheet. It continues operating down to 0.8 V once started - enabling reliable operation from deeply discharged NiMH or alkaline cells.
Is the TPS61012DGSR pin-compatible with other devices in the TPS6101x family?
Yes, the TPS61012DGSR shares identical pin configuration and MSOP-10 (DGS) package with all fixed-output variants (TPS61011–TPS61016) and the adjustable TPS61010. Pin functions - including EN, ADEN, LBI, LBO, SW, and VOUT - are fully compatible, allowing direct substitution where output voltage matches system requirements.
TPS61012DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 1.8V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 540mA (Switch)
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS61012DGSR FAQ
1.How can I place an order for TPS61012DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61012DGSR 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 TPS61012DGSR reliable?
The price and inventory of TPS61012DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61012DGSR is usually 5 days.
3.What payment methods are accepted for TPS61012DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61012DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61012DGSR?
TPS61012DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61012DGSR 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 TPS61012DGSR?
For technical support, including TPS61012DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61012DGSR requirements.
6.How does Aetrix verify that TPS61012DGSR is sourced from the original manufacturer or authorized distributors?
All TPS61012DGSR 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 TPS61012DGSR meets industry standards.
7.What is the process for return or replacement of TPS61012DGSR?
All TPS61012DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61012DGSR, 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 TPS61012DGSR part is unused and in its original packaging.
Return procedure for TPS61012DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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