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Texas Instruments TPS61011DGS
- Part No.:
- TPS61011DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61011DGS.pdf
- Description:
- IC REG BOOST 1.5V 390MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
TPS61011DGS from Texas Instruments is a fixed-output 1.8 V synchronous boost converter IC for single/dual-cell battery systems, featuring 95% peak efficiency, 0.9 V minimum start-up voltage, 200 mA output current at 2.4 V input, integrated low-battery comparator (500 mV threshold), and autodischarge function - used in portable medical diagnostics and wireless headsets.
For engineers reviewing the TPS61011DGS datasheet, TPS61011DGS pinout, TPS61011DGS application, or TPS61011DGS equivalent, this page delivers verified electrical specs, validated MSOP-10 pin mapping, confirmed fixed 1.8 V output behavior, and real-world design implications of its power-save mode, synchronous rectification, and shutdown isolation.
Technical Context
The TPS61011DGS implements a fixed-frequency (420–780 kHz), current-mode PWM boost controller with integrated NMOS/PMOS synchronous rectifier - eliminating external Schottky diodes and enabling >95% efficiency. It uses pulse-by-pulse current limiting (1.45 A typical switch limit) and automatic transition into power-save mode below ~10 mA load to minimize switching losses.
Its control loop requires external R-C-C compensation on the COMP pin; the FB pin is unconnected (fixed-output variant); ADEN enables/disables autodischarge; LBI/LBO provide programmable low-battery detection with 10 mV hysteresis; and UVLO prevents operation below ~0.7 V while sustaining regulation down to 0.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% (1.45–1.55 V min/max at 100 mA load) |
| Start-Up Voltage | 0.9 V minimum - enables operation from near-dead alkaline/NiMH cells |
| Max Output Current | 200 mA at VIN ≥ 1.8 V - supports microcontroller + sensor loads |
| Peak Efficiency | 95% - achieved via integrated synchronous rectifier (no external diode needed) |
| Quiescent Current | 46 µA typical - ensures ultra-low battery drain during active regulation |
| Shutdown Current | 1–3 µA - isolates load from battery, preventing residual discharge |
| Oscillator Frequency | 500 kHz typical (420–780 kHz range) - balances EMI and inductor size |
| Switch Current Limit | 1.45 A typical - protects internal MOSFETs under short-circuit or heavy transient loads |
Pinout & Package
TPS61011DGS is housed in a 10-pin MSOP (VSSOP-10) package, 3.00 mm × 3.00 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 | High-active enable: tie to VBAT to activate; GND disables converter and isolates load from battery |
| 2 - COMP | Compensation node | Connect R-C-C network to stabilize control loop; unused in basic designs risks instability |
| 3 - FB | Feedback input | No connection required - fixed 1.8 V output version; leaving floating is correct per datasheet |
| 4 - GND | Power and signal ground | Must be low-impedance plane; connects to thermal pad for thermal performance |
| 5 - VOUT | Regulated output | Delivers stable 1.8 V; requires 10–47 µF ceramic output capacitor for ripple suppression |
| 6 - VBAT | Battery input supply | Accepts 0.8–3.6 V; UVLO engages below ~0.7 V to prevent malfunction |
| 7 - SW | Switch node | Connects to inductor; carries high di/dt - requires tight layout and Kelvin routing |
| 8 - ADEN | Autodischarge enable | Tie to VBAT to discharge output cap during shutdown; GND disables discharge |
| 9 - LBI | Low-battery detector input | Monitor battery via resistor divider; triggers LBO when scaled voltage drops below 500 mV |
| 10 - LBO | Low-battery open-drain output | Pulled low when LBI < 500 mV; requires external pull-up to VOUT for logic-level signaling |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PMOS switches eliminate Schottky diode - reduces conduction loss and board area |
| Load isolation during shutdown | Special backgate disconnect circuit prevents reverse current flow - preserves battery charge without external FET |
| Autodischarge function | 300 Ω internal switch discharges output cap to <0.4 V after EN=low - prevents MCU latch-up in portable systems |
| Power-save mode | Reduces switching frequency at light load - maintains >85% efficiency even at 1 mA output current |
| Low-battery detection | 500 mV ±15 mV reference with 10 mV hysteresis - enables precise battery end-of-life signaling |
| Antiringing switch | Integrated clamp suppresses inductor flyback ringing - lowers EMI without extra snubber components |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
Use Scenario: Battery-powered handheld glucose meter or pulse oximeter requiring stable 1.8 V rail for ADC and microcontroller. IC Role / Device Role / Timing Role: Primary DC-DC boost regulator delivering regulated 1.8 V from fading single-alkaline cell. Use Value: 0.9 V start-up extends usable battery life by >25%; autodischarge ensures clean power-down reset of memory registers. |
Use Scenario: Compact Bluetooth headset with space-constrained PCB and dual NiMH cells. IC Role / Device Role / Timing Role: Fixed 1.8 V supply for Bluetooth SoC RF section and audio codec. Use Value: 95% efficiency minimizes heat in sealed enclosure; shutdown isolation prevents standby drain below 3 µA. |
| Internet Audio Players | Remote Controls |
Use Scenario: Flash-based MP3 player powered by two AA alkaline cells with dynamic load from audio decode and display backlight. IC Role / Device Role / Timing Role: Main system rail generator supporting burst-mode current demands up to 200 mA. Use Value: Power-save mode maintains >88% efficiency at 5 mA playback idle; LBO alerts firmware before brownout. |
Use Scenario: IR remote with low-cost MCU and minimal BOM, operating from one AAA cell. IC Role / Device Role / Timing Role: Single-stage boost supplying 1.8 V to MCU I/O and IR LED driver. Use Value: 0.8 V operating floor enables full functionality until cell reaches 0.9 V - maximizes button-press count per battery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61012DGS | Fixed 2.5 V output; 2.42–2.58 V tolerance; identical pinout and package | Requires redesign of downstream 1.8 V logic rails; suitable only if system voltage margin allows | Select when target load requires 2.5 V instead of 1.8 V - no layout change needed |
| TPS61200DRCR | QFN-10 package; adjustable output (0.9–5.5 V); higher 1.3 A switch limit; 2.5 µA shutdown current | Supports wider input/output ranges but lacks integrated LBO/LBI; requires FB resistor network | Choose for flexible voltage scaling or lower shutdown current - requires new layout and compensation design |
Compared with TPS61011DGS, TPS61012DGS offers identical form-factor and feature set but targets 2.5 V systems, while TPS61200DRCR trades fixed-voltage simplicity for adjustable output and lower quiescent current - demanding additional design effort for compensation and feedback.
Availability
TPS61011DGS 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 TPS61011DGS 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 over 50 years of innovation in energy-efficient power conversion.
The TPS6101x family was designed specifically for ultra-low-voltage, high-efficiency boost conversion in space-constrained battery-powered devices - prioritizing start-up capability below 1 V and seamless integration of protection and monitoring features.
FAQ
What is the exact output voltage tolerance of the TPS61011DGS?
The TPS61011DGS delivers a fixed 1.8 V output with a guaranteed tolerance of ±3% (1.45 V to 1.55 V) across temperature and load conditions per datasheet Section 7.5. This tight regulation supports precision analog circuits and low-voltage logic without external feedback tuning.
Does the TPS61011DGS require an external compensation network?
Yes, the TPS61011DGS requires an external R-C-C compensation network on the COMP pin to stabilize its current-mode control loop. Omitting this network causes oscillation or poor transient response. The datasheet provides design equations and example values for common inductor/capacitor combinations.
Can the TPS61011DGS operate from a single NiMH cell?
Yes, the TPS61011DGS operates from 0.8 V to 3.6 V input, making it fully compatible with single NiMH cells (nominal 1.2 V, discharged to ~0.9 V). Its 0.9 V start-up voltage ensures reliable boot at end-of-discharge, extending usable runtime beyond conventional boost ICs.
How does the autodischarge function work on the TPS61011DGS?
When ADEN is tied to VBAT and EN is pulled low, the TPS61011DGS activates an internal 300 Ω discharge switch between VOUT and GND. This drains output capacitance to <0.4 V within milliseconds - critical for preventing undefined MCU states during power-off in portable medical and audio devices.
Is the TPS61011DGS pin-compatible with other TPS6101x variants?
Yes, all TPS6101x devices including TPS61011DGS share identical 10-pin MSOP (DGS) pinout and footprint. Swapping to TPS61012DGS (2.5 V) or TPS61014DGS (3.0 V) requires only a BOM change - no PCB revision is needed, provided downstream voltage requirements align.
TPS61011DGS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 1.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 390mA (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
TPS61011DGS FAQ
1.How can I place an order for TPS61011DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61011DGS 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 TPS61011DGS reliable?
The price and inventory of TPS61011DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61011DGS is usually 5 days.
3.What payment methods are accepted for TPS61011DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61011DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61011DGS?
TPS61011DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61011DGS 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 TPS61011DGS?
For technical support, including TPS61011DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61011DGS requirements.
6.How does Aetrix verify that TPS61011DGS is sourced from the original manufacturer or authorized distributors?
All TPS61011DGS 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 TPS61011DGS meets industry standards.
7.What is the process for return or replacement of TPS61011DGS?
All TPS61011DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS61011DGS, 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 TPS61011DGS part is unused and in its original packaging.
Return procedure for TPS61011DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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