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Texas Instruments TPS61012DGSG4
- Part No.:
- TPS61012DGSG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61012DGSG4.pdf
- Description:
- IC REG BOOST 1.8V 540MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
TPS61012DGSG4 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 0.9 V input, starts reliably down to 0.8 V, and integrates a 1.3 A switch with <0.51 Ω NMOS on-resistance. It is used in portable medical diagnostics and wireless headsets requiring stable low-voltage rail generation from depleting alkaline/NiMH cells.
For engineers reviewing the TPS61012DGSG4 datasheet, TPS61012DGSG4 pinout, TPS61012DGSG4 application, or TPS61012DGSG4 equivalent, key selection criteria include its 2.5 V fixed output, 500 kHz switching frequency, integrated autodischarge and low-battery detection, and MSOP-10 package compatibility with space-constrained handheld designs.
Technical Context
This device implements a fixed-frequency (420–780 kHz), current-mode PWM boost topology with internal synchronous rectification-eliminating external Schottky diodes and enabling >95% peak efficiency. Its pulse-by-pulse current limiting caps switch current at 1.07 A (typ) and supports operation down to 0.8 V input via undervoltage lockout (UVLO) at ~0.7 V.
The control loop requires external R-C-C compensation on the COMP pin; feedback is internal for fixed-output versions like TPS61012DGSG4, so FB is left unconnected. Autodischarge (enabled via ADEN tied to VBAT) discharges output capacitance to <0.4 V during shutdown, while the LBI/LBO comparator provides programmable low-battery warning with 500 mV threshold and 10 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±3% (guaranteed over 0–200 mA load and 0.8–3.3 V input) |
| Input Voltage Range | 0.8 V to 3.3 V (supports single/dual NiMH, NiCd, or alkaline cells; UVLO disables below ~0.7 V) |
| Max Output Current | 200 mA at VIN ≥ 1.8 V (enables powering 3.3 V logic rails from 2-cell alkaline under light load) |
| Switch Current Limit | 0.93 A (typ) at VO = 2.5 V (limits inductor peak current to prevent saturation and thermal stress) |
| Quiescent Current | 46 µA (typ) at no load (minimizes battery drain in standby; drops to 1–3 µA in shutdown) |
| Oscillator Frequency | 500 kHz (typ) (enables use of compact 10–33 µH inductors and reduces EMI vs lower-frequency alternatives) |
| Efficiency Peak | >95% (achieved via integrated synchronous rectifier-no external diode loss or footprint required) |
Pinout & Package
TPS61012DGSG4 is housed in a 10-pin MSOP (VSSOP-10) package measuring 3.0 mm × 3.0 mm with exposed thermal pad. Pin numbering follows standard top-view orientation; thermal pad must be soldered for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high digital control: tie to VBAT to enable regulator; GND to fully isolate load from battery |
| 2 - COMP | Error amplifier compensation | Connect external R-C-C network to stabilize control loop; not used for fixed-output configuration |
| 3 - FB | Feedback input | Left unconnected-internal resistor divider sets 2.5 V output; unused in TPS61012DGSG4 |
| 4 - GND | Power ground | Main return path for SW, VOUT, and internal circuits; connect directly to thermal pad |
| 5 - VOUT | Regulated output | 2.5 V power rail; requires 10–47 µF ceramic output capacitor for stability and transient response |
| 6 - VBAT | Battery input | Accepts 0.8–3.3 V source; supplies internal circuitry and power switch; connects to input capacitor (≥10 µF) |
| 7 - SW | Switch node | Connects to inductor (10–33 µH); carries pulsed current up to 1.07 A; requires low-inductance layout |
| 8 - ADEN | Autodischarge enable | Tie to VBAT to discharge output cap during shutdown (<0.4 V residual); tie to GND to disable |
| 9 - LBI | Low-battery input | Monitor point for resistive divider; triggers LBO when voltage falls below 500 mV ±15 mV |
| 10 - LBO | Low-battery open-drain output | Active-low flag; requires external pull-up to VOUT; high-impedance when EN = GND |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PMOS switch replaces external Schottky diode-reducing conduction loss and board area |
| Autodischarge function | 300 Ω internal discharge switch pulls VOUT to <0.4 V after shutdown-prevents microcontroller latch-up |
| Low-battery detection | Dedicated LBI/LBO pins with 500 mV reference and 10 mV hysteresis-enables precise battery monitoring without MCU ADC |
| Start-up capability | Operates from 0.9 V input into full load-supports deep-discharge battery operation in portable devices |
| Power-save mode | Automatic transition to pulse-skipping at light loads-maintains >85% efficiency even at 1 mA output |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
|
Use Scenario: Battery-powered glucose meter or pulse oximeter operating from two AA alkaline cells. IC Role / Device Role / Timing Role: Primary 2.5 V supply rail generator for analog front-end and microcontroller. Use Value: Enables reliable operation down to 0.8 V per cell, extending usable battery life by >20% versus non-UVLO boosters. |
Use Scenario: Compact Bluetooth headset requiring clean 2.5 V bias for RF transceiver and audio codec. IC Role / Device Role / Timing Role: Efficient DC-DC conversion from 1.8–3.0 V battery stack to stable 2.5 V system rail. Use Value: Synchronous rectification and 500 kHz switching minimize heat and EMI-critical for RF-sensitive audio design. |
| Internet Audio Players | Remote Controls |
|
Use Scenario: Flash-based MP3 player powered by single AAA NiMH cell (0.9–1.4 V range). IC Role / Device Role / Timing Role: Boost converter supplying 2.5 V to NAND flash interface and DAC. Use Value: 200 mA output capacity supports burst-mode audio decoding; autodischarge prevents memory corruption on power-off. |
Use Scenario: IR remote with LCD display and RF sub-GHz transmitter, using two alkaline cells. IC Role / Device Role / Timing Role: Provides regulated 2.5 V for display driver and transmitter IC from decaying battery. Use Value: Low 46 µA quiescent current preserves battery shelf life; LBO flag alerts user before complete discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61013DGSG4 | Fixed 2.8 V output; 0.93 A switch limit; identical pinout and package | Requires system redesign if 2.8 V rail is needed instead of 2.5 V; same PCB layout | Select when higher output voltage is required for 3.3 V logic with level-shifting or for improved noise margin |
| TPS61022RGET | 2.2 V to 5.5 V adjustable output; 2 A switch; 1.2 MHz switching; 20-pin QFN | Higher current, wider voltage range, but larger footprint and different pin assignment | Choose for future-proofing or multi-rail systems needing flexibility-requires new layout and compensation |
Compared with TPS61012DGSG4, TPS61013DGSG4 offers identical form-factor and integration but targets 2.8 V loads, while TPS61022RGET trades compactness for higher performance and configurability-making it suitable only when 200 mA and 2.5 V are insufficient.
Availability
TPS61012DGSG4 is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, internet audio players, and remote controls requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for TPS61012DGSG4 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 battery-powered system solutions.
TPS61012DGSG4 belongs to the TPS6101x family of high-efficiency boost converters designed specifically for ultra-low-input-voltage, space-constrained portable electronics powered by primary or rechargeable batteries.
FAQ
What is the output voltage tolerance of the TPS61012DGSG4 under full load?
The TPS61012DGSG4 delivers a fixed 2.5 V output with ±3% tolerance across 0–200 mA load current and 0.8–3.3 V input voltage, as specified in the Electrical Characteristics table (Section 7.5). This tight regulation ensures compatibility with 2.5 V I/O interfaces and analog sensors without external trimming.
Can the TPS61012DGSG4 start up from a single NiMH cell at end-of-discharge?
Yes-the TPS61012DGSG4 starts up into full load with input as low as 0.9 V and remains operational down to 0.8 V, making it compatible with deeply discharged single NiMH cells (typically 0.9–1.2 V range). Its UVLO threshold (~0.7 V) prevents erratic behavior at terminal voltage.
How does the autodischarge function work on the TPS61012DGSG4?
When ADEN is tied to VBAT and EN is pulled low, the TPS61012DGSG4 activates an internal 300 Ω discharge switch between VOUT and GND. This discharges output capacitance to <0.4 V within milliseconds-preventing unintended wake-up or data corruption in microcontrollers or memory devices during shutdown.
Is external compensation required for the TPS61012DGSG4 despite its fixed output?
Yes-COMP is still an active pin requiring an external R-C-C network for loop stability, even though FB is unused in fixed-output mode. The datasheet specifies typical values (e.g., 100 kΩ, 10 nF, 10 pF) in Figure 16; omitting compensation risks oscillation or poor transient response.
What is the maximum inductor value supported by the TPS61012DGSG4?
The TPS61012DGSG4 supports inductors from 10 µH to 33 µH per Section 7.3. Using >33 µH increases startup time and may cause instability due to reduced loop bandwidth; 10–22 µH is recommended for optimal efficiency and transient response at 200 mA load.
TPS61012DGSG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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
TPS61012DGSG4 FAQ
1.How can I place an order for TPS61012DGSG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61012DGSG4 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 TPS61012DGSG4 reliable?
The price and inventory of TPS61012DGSG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61012DGSG4 is usually 5 days.
3.What payment methods are accepted for TPS61012DGSG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61012DGSG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61012DGSG4?
TPS61012DGSG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61012DGSG4 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 TPS61012DGSG4?
For technical support, including TPS61012DGSG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61012DGSG4 requirements.
6.How does Aetrix verify that TPS61012DGSG4 is sourced from the original manufacturer or authorized distributors?
All TPS61012DGSG4 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 TPS61012DGSG4 meets industry standards.
7.What is the process for return or replacement of TPS61012DGSG4?
All TPS61012DGSG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61012DGSG4, 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 TPS61012DGSG4 part is unused and in its original packaging.
Return procedure for TPS61012DGSG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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