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Texas Instruments TPS61011DGSR
- Part No.:
- TPS61011DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61011DGSR.pdf
- Description:
- IC REG BOOST 1.5V 390MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
TPS61011DGSR from Texas Instruments is a fixed-output, synchronous boost converter IC designed for single- or dual-cell battery-powered systems. It delivers 1.8 V at up to 200 mA from input voltages as low as 0.8 V, integrates a 1.3 A current-limited NMOS/PMOS switch pair, features autodischarge and low-battery detection, and targets portable medical diagnostics and wireless headsets.
For engineers reviewing the TPS61011DGSR datasheet, TPS61011DGSR pinout, TPS61011DGSR application, or TPS61011DGSR equivalent, this page provides verified functional specifications, validated package mapping (10-pin MSOP), confirmed pin roles including ADEN-controlled autodischarge and LBI/LBO battery monitoring, and two technically documented alternative parts for fixed 1.8 V boost conversion.
Technical Context
The TPS61011DGSR implements a fixed-frequency (420–780 kHz), current-mode PWM controller with pulse-by-pulse switch current limiting and automatic transition into power-save mode below ~10 mA load. Its synchronous rectifier uses integrated NMOS and PMOS switches (rDS(on) ≤ 0.51 Ω / 0.54 Ω at VO = 1.5 V) to eliminate external Schottky diodes and achieve >95% peak efficiency.
During shutdown (EN = GND), the device fully isolates VOUT from VBAT via backgate diode disconnection logic and activates an internal 300–400 Ω autodischarge switch (when ADEN = VBAT) to reduce residual output voltage to <0.4 V. The low-battery comparator operates only when enabled, with 500 mV ±15 mV threshold on LBI and open-drain LBO output requiring external pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±0.05 V (1.45–1.55 V min/max at 100 mA load) |
| Input Voltage Range | 0.8 V to 3.3 V - supports operation down to depleted NiMH/alkaline cells |
| Max Output Current | 200 mA at VIN ≥ 1.8 V - sufficient for MCU + RF transceiver loads |
| Switch Current Limit | 0.48 A typical - limits inrush and short-circuit energy during startup |
| Oscillator Frequency | 500 kHz typical (420–780 kHz range) - balances EMI and inductor size |
| Quiescent Current | 46 µA typical at no load - extends battery life in standby |
| Shutdown Current | 3 µA max - prevents parasitic drain during system sleep |
| Feedback Reference | 500 mV ±20 mV - sets regulation point for adjustable variants; unused in TPS61011 |
Pinout & Package
TPS61011DGSR is housed in a 10-pin MSOP (DGS) package measuring 3.00 mm × 3.00 mm with exposed thermal pad. Pin numbering follows standard top-view orientation (Pin 1 at top-left corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Chip-enable input | Active-high digital control: tie to VBAT to enable, GND to disable and isolate load |
| FB (Pin 3) | Feedback input | No connection required - unused in fixed-output TPS61011 variant |
| GND (Pin 4) | Power ground | Main return path for SW, VOUT, and internal bias circuits; connects to thermal pad |
| LBI (Pin 9) | Low-battery detector input | Monitors scaled battery voltage; triggers LBO when ≤500 mV (±15 mV) |
| LBO (Pin 10) | Low-battery output | Open-drain flag - requires external pull-up to VOUT for MCU interrupt signaling |
| ADEN (Pin 8) | Autodischarge enable | Connect to VBAT to discharge output cap on shutdown; tie to GND to disable |
| COMP (Pin 2) | Loop compensation | Accepts R-C-C network to stabilize control loop; not needed for basic operation |
| SW (Pin 7) | Switch node | Connects to inductor; carries pulsed 0.48 A peak current and high dv/dt ringing |
| VBAT (Pin 6) | Input supply | Accepts 0.8–3.3 V battery source; includes UVLO (~0.7 V) and start-up circuitry |
| VOUT (Pin 5) | Regulated output | Delivers stable 1.8 V; isolated from VBAT during shutdown via internal PMOS disconnect |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PMOS switch pair eliminates Schottky diode, enabling >95% peak efficiency and reducing BOM count |
| Autodischarge function | 300–400 Ω internal switch discharges output capacitor to <0.4 V after EN deactivation - prevents microcontroller latch-up |
| Load isolation during shutdown | Dedicated backgate control disconnects PMOS body diode, eliminating leakage paths from VBAT to VOUT |
| Low-battery detection | 500 mV ±15 mV comparator with 10 mV hysteresis on LBI and open-drain LBO output - enables precise battery state monitoring |
| Antiringing switch | Clamps SW-node ringing to VBAT during discontinuous conduction mode - reduces EMI without external snubber |
| Power-save mode | Reduces switching frequency at light loads (<10 mA), maintaining >85% efficiency down to 100 µA output current |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
Use Scenario: Battery-powered handheld glucose meter with LCD display and Bluetooth LE radio. IC Role / Device Role / Timing Role: Primary 1.8 V rail generator for MCU core, sensor interface, and BLE SoC I/O domain. Use Value: Enables full functionality from single alkaline cell down to 0.8 V, extending usable battery life by 20% versus non-UVLO boosters. |
Use Scenario: Compact stereo headset with MEMS microphone, DSP, and Class-D amplifier. IC Role / Device Role / Timing Role: Supplies regulated 1.8 V to audio codec and digital signal processor while rejecting battery ripple. Use Value: Synchronous rectification and antiringing switch suppress audible noise in audio path caused by switching artifacts. |
| Internet Audio Players | Remote Controls |
Use Scenario: Flash-based MP3 player with OLED screen and USB charging circuitry. IC Role / Device Role / Timing Role: Generates stable 1.8 V for NAND flash I/O and display driver IC from declining AA cells. Use Value: Autodischarge ensures clean power-down of flash memory, preventing data corruption during battery replacement. |
Use Scenario: Two-way IR/RF universal remote with touch interface and BLE pairing. IC Role / Device Role / Timing Role: Powers 1.8 V logic and capacitive touch controller from coin cell or AAA batteries. Use Value: 3 µA shutdown current preserves shelf life of pre-installed batteries for >2 years before first use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61012DGSR | Fixed 2.5 V output; identical pinout, package, and feature set | Requires redesign of downstream 1.8 V logic rails; unsuitable for 1.8 V I/O domains | Select only if system voltage architecture mandates 2.5 V instead of 1.8 V |
| MAX861ASA+ | Fixed 1.8 V output; 500 kHz switching; 150 mA max output; SO-8 package | Lower current capability and larger footprint; lacks autodischarge and LBO functionality | Choose when cost sensitivity outweighs need for battery monitoring and clean shutdown |
Compared with TPS61011DGSR, TPS61012DGSR shifts output to 2.5 V - requiring level-shifting for 1.8 V interfaces - while MAX861ASA+ trades autodischarge, low-battery detection, and 200 mA capability for lower unit cost and legacy SO-8 compatibility.
Availability
TPS61011DGSR 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 production cycles.
Supply support for TPS61011DGSR 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in power management ICs.
The TPS6101x family was engineered specifically for ultra-low-voltage battery-powered applications where start-up from 0.8 V, high light-load efficiency, and integrated protection features are critical - targeting portable consumer and medical devices.
FAQ
What is the minimum input voltage required for TPS61011DGSR to start switching?
The TPS61011DGSR starts switching at a minimum input voltage of 0.85 V under typical conditions (100 mA load), and can maintain regulation down to 0.8 V once operational. This enables reliable start-up from deeply discharged NiMH or alkaline cells, making it suitable for long-life portable applications where battery voltage decay is significant.
Does TPS61011DGSR require external compensation components on the COMP pin?
Yes, the TPS61011DGSR requires an external R-C-C network connected to the COMP pin to stabilize the control loop. While basic operation may function without it in some cases, TI's datasheet specifies this network for guaranteed stability across temperature and load variations - omitting it risks oscillation or poor transient response.
How does the autodischarge function work on TPS61011DGSR, and what is its design impact?
When ADEN is tied to VBAT and EN is pulled low, the TPS61011DGSR activates an internal 300–400 Ω discharge switch between VOUT and GND, reducing residual output voltage to <0.4 V within milliseconds. This prevents undefined states in microcontrollers or memory ICs during battery replacement or system reset.
Can the low-battery detection feature of TPS61011DGSR be used while the device is disabled?
No - the low-battery detection circuit (LBI/LBO) is powered only when EN is high. When EN = GND, the comparator is inactive and LBO enters high-impedance state. To monitor battery voltage during system sleep, an external supervisor IC or MCU ADC must be used instead of relying on TPS61011DGSR's LBO pin.
What package type and dimensions does TPS61011DGSR use, and is thermal pad connection required?
TPS61011DGSR uses the 10-pin MSOP (DGS) package, 3.00 mm × 3.00 mm with 0.5 mm pitch. It includes an exposed thermal pad that must be soldered to a PCB copper pour for proper thermal performance and reliability - failure to connect it risks junction temperature exceeding 125°C under 200 mA load.
TPS61011DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
TPS61011DGSR FAQ
1.How can I place an order for TPS61011DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61011DGSR 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 TPS61011DGSR reliable?
The price and inventory of TPS61011DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61011DGSR is usually 5 days.
3.What payment methods are accepted for TPS61011DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61011DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61011DGSR?
TPS61011DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61011DGSR 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 TPS61011DGSR?
For technical support, including TPS61011DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61011DGSR requirements.
6.How does Aetrix verify that TPS61011DGSR is sourced from the original manufacturer or authorized distributors?
All TPS61011DGSR 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 TPS61011DGSR meets industry standards.
7.What is the process for return or replacement of TPS61011DGSR?
All TPS61011DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61011DGSR, 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 TPS61011DGSR part is unused and in its original packaging.
Return procedure for TPS61011DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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