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Texas Instruments TPS61011DGSG4
- Part No.:
- TPS61011DGSG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61011DGSG4.pdf
- Description:
- IC REG BOOST 1.5V 390MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,399
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Product details
Overview
TPS61011DGSG4 from Texas Instruments is a fixed-output 1.8 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 up at 0.8 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 TPS61011DGSG4 datasheet, TPS61011DGSG4 pinout, TPS61011DGSG4 application, or TPS61011DGSG4 equivalent, key selection criteria include minimum start-up voltage (0.8 V), fixed 1.8 V output accuracy (±50 mV), shutdown current (1–3 µA), integrated synchronous rectification, and MSOP-10 package compatibility with space-constrained battery-powered designs.
Technical Context
The TPS61011DGSG4 implements a fixed-frequency (420–780 kHz), current-mode PWM boost controller with pulse-by-pulse switch current limiting (1.07–1.13 A typical). It transitions automatically into power-save mode at light loads to maintain >95% peak efficiency while minimizing switching losses.
Its synchronous rectifier uses integrated NMOS/PMOS switches (rDS(on) ≤ 0.51 Ω / ≤ 0.54 Ω at VO = 1.5 V) to eliminate external Schottky diodes. During shutdown, a dedicated isolation circuit disconnects the load from VBAT, and the ADEN-controlled 300 Ω autodischarge switch reduces residual VOUT to <0.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±50 mV - tightly regulated for powering 1.8 V logic rails without external feedback components. |
| Input Voltage Range | 0.8 V to 3.6 V - supports deep-discharged NiMH/NiCd/alkaline cells and enables operation down to near-end-of-life battery voltage. |
| Max Output Current | 200 mA at VIN ≥ 1.8 V - sufficient to drive microcontrollers, sensors, and RF transceivers in portable devices. |
| Switch Current Limit | 1.07–1.13 A typical - sets robust overcurrent protection threshold for 10 µH inductor-based designs. |
| Quiescent Current | 5–8 µA in shutdown (IOFF) - minimizes battery drain during system sleep or standby modes. |
| Oscillator Frequency | 420–780 kHz - balances EMI performance and inductor size; enables use of compact 10 µH shielded power inductors. |
| Efficiency Peak | >95% - achieved via integrated synchronous rectification, eliminating Schottky forward-drop losses. |
Pinout & Package
TPS61011DGSG4 is housed in a 10-pin MSOP (VSSOP-10) 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 |
|---|---|---|
| 1 - EN | Chip-enable input | Active-high digital enable; pulls internal control logic and LBI comparator offline when low - critical for system-level power sequencing. |
| 2 - COMP | Compensation node | Connects external R-C-C network to stabilize control loop; determines phase margin and transient response for 1.8 V regulation. |
| 3 - FB | Feedback input | No connection required - TPS61011DGSG4 has factory-trimmed internal resistor divider for fixed 1.8 V output. |
| 4 - GND | Power and signal ground | Primary return path for SW, VOUT, and internal bias; must be low-impedance and thermally coupled to thermal pad. |
| 5 - VOUT | Regulated output | Delivers stable 1.8 V to load; requires ≥10 µF ceramic output capacitance (X7R/X5R) for stability and ripple suppression. |
| 6 - VBAT | Battery input supply | Accepts 0.8–3.6 V raw battery source; feeds internal UVLO, bias generation, and power switch driver stages. |
| 7 - SW | Switch node | Connects to inductor (L1); carries pulsed 1.07–1.13 A current at 420–780 kHz - requires short, low-inductance PCB routing. |
| 8 - ADEN | Autodischarge enable | Tied to VBAT to activate 300 Ω discharge path across VOUT during shutdown; tied to GND to disable discharge. |
| 9 - LBI | Low-battery detector input | Monitors scaled battery voltage; triggers LBO when input drops below 480–520 mV - requires resistive divider if used. |
| 10 - LBO | Low-battery open-drain output | Active-low flag pulled low when LBI < 500 mV; requires external pullup to VOUT for microcontroller wake-up or alert signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PMOS switches replace external Schottky diode - eliminates ~0.3 V forward drop, enabling >95% efficiency at 100 mA. |
| Autodischarge function | 300 Ω on-chip discharge switch reduces VOUT to <0.4 V within milliseconds after shutdown - prevents microcontroller latch-up in memory-retention systems. |
| Load isolation during shutdown | Dedicated backgate control disconnects VOUT from VBAT even when PMOS body diode would otherwise conduct - ensures true zero-load battery drain. |
| Low-battery detection | Programmable 500 mV ±15 mV threshold with 10 mV hysteresis on LBI/LBO pins - enables customizable battery fuel-gauge alerts without external comparators. |
| Start-up capability | Operates from 0.8 V input and starts into full load at 0.9 V - supports ultra-low-voltage battery chemistries including partially depleted alkaline cells. |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
Use Scenario: Battery-powered handheld glucose meters and pulse oximeters requiring stable 1.8 V rail for ADCs and Bluetooth LE radios. IC Role / Device Role / Timing Role: Primary DC-DC voltage booster supplying regulated 1.8 V from single AA/AAA cell; manages brownout-safe shutdown via LBI/LBO. Use Value: Enables 200 mA peak current delivery at 0.9 V input - extends usable battery life by supporting operation down to 0.8 V, reducing replacement frequency. |
Use Scenario: Compact Bluetooth audio earbuds where board space and quiescent current directly impact battery runtime. IC Role / Device Role / Timing Role: Fixed 1.8 V power source for DSP, codec, and BLE SoC; enters power-save mode between audio packets to minimize idle loss. Use Value: 5–8 µA shutdown current and >95% efficiency at 10 mA load extend talk time by >12% versus diode-based boosters. |
| Internet Audio Players | Remote Controls |
Use Scenario: Flash-memory-based MP3 players using single-cell alkaline batteries and low-power microcontrollers. IC Role / Device Role / Timing Role: Main 1.8 V supply for NAND flash interface and ARM Cortex-M0 core; autodischarge clears VOUT on power-off to prevent firmware corruption. Use Value: Integrated 300 Ω discharge switch eliminates need for external MOSFET + resistor - saves 2.5 mm² PCB area and BOM cost. |
Use Scenario: IR remote controls with ultra-low average current draw (<10 µA) but occasional 100 mA IR LED bursts. IC Role / Device Role / Timing Role: High-current burst-mode booster enabling 100 mA IR pulses from weak 1.2 V NiMH cells; UVLO prevents erratic behavior at end-of-life. Use Value: 0.8 V minimum operating voltage allows full functionality until battery reaches 1.0 V - increases usable capacity by ~18%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61012DGSG4 | Fixed 2.5 V output; identical package, pinout, and electrical specs except output voltage and FB configuration. | Requires redesign of downstream 2.5 V logic interfaces; not suitable for 1.8 V I/O domains without level-shifting. | Select only if system requires 2.5 V rail and can accommodate higher output voltage tolerance. |
| TPS61022RGET | Higher 2.2 A switch current limit, 2.5 V to 5.5 V input, 3.3 V/5 V selectable output - QFN-16 package, no LBI/LBO pins. | Lacks integrated low-battery detection and autodischarge; targets higher-power applications like IoT sensors with Li-ion input. | Choose when >200 mA output or wider input range is needed, and LBI/LBO functionality is unnecessary. |
Compared with TPS61011DGSG4, TPS61012DGSG4 offers identical form-factor and feature set but targets 2.5 V systems, while TPS61022RGET trades battery-monitoring features for higher current and input flexibility - making TPS61011DGSG4 optimal for space-constrained, low-voltage, battery-fueled 1.8 V applications requiring precise end-of-life detection.
Availability
TPS61011DGSG4 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 TPS61011DGSG4 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 and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing reliability.
The TPS6101x family was engineered specifically for ultra-low-input-voltage, high-efficiency boosting in single/dual-cell battery systems - prioritizing minimal start-up voltage, integrated protection, and compact packaging for portable electronics.
FAQ
What is the minimum input voltage required for TPS61011DGSG4 to start up and regulate?
The TPS61011DGSG4 starts up and delivers regulated 1.8 V output with as little as 0.9 V input under full load conditions. Once operational, it continues regulating down to 0.8 V input. This ultra-low start-up threshold enables reliable operation from deeply discharged NiMH, NiCd, or alkaline cells - a key advantage over competing boost converters requiring ≥1.0 V minimum input.
Does TPS61011DGSG4 require an external feedback resistor network?
No. The TPS61011DGSG4 is a fixed-output variant with factory-trimmed internal resistor divider setting VOUT to 1.8 V. The FB pin (pin 3) must remain unconnected. Only the adjustable TPS61010DGSG4 requires external resistors on FB to set output voltage between 1.5 V and 3.3 V.
How does the autodischarge function work on TPS61011DGSG4, and how is it enabled?
The autodischarge function on TPS61011DGSG4 activates a 300 Ω internal switch between VOUT and GND after shutdown (EN = low), discharging output capacitors to <0.4 V. It is enabled by connecting ADEN (pin 8) to VBAT; tying ADEN to GND disables the function. This prevents residual voltage from causing undefined states in microcontrollers or memory during power-off.
What package type and dimensions does TPS61011DGSG4 use?
The TPS61011DGSG4 uses a 10-pin MSOP (VSSOP-10) package with nominal body size 3.00 mm × 3.00 mm and exposed thermal pad. It is distinct from the QFN-10 (DRC) variant used by TPS61010 - the DGSG4 suffix confirms the MSOP-10 package, critical for footprint compatibility in legacy designs.
Can TPS61011DGSG4 be used with lithium coin cells or supercapacitors?
Yes - its 0.8 V to 3.6 V input range supports lithium coin cells (e.g., CR2032, nominal 3.0 V) and supercapacitors discharging down to 0.8 V. However, ensure maximum input voltage does not exceed 3.6 V absolute rating, and verify that the 1.8 V output meets downstream load requirements without additional regulation.
TPS61011DGSG4 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
TPS61011DGSG4 FAQ
1.How can I place an order for TPS61011DGSG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61011DGSG4 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 TPS61011DGSG4 reliable?
The price and inventory of TPS61011DGSG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61011DGSG4 is usually 5 days.
3.What payment methods are accepted for TPS61011DGSG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61011DGSG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61011DGSG4?
TPS61011DGSG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61011DGSG4 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 TPS61011DGSG4?
For technical support, including TPS61011DGSG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61011DGSG4 requirements.
6.How does Aetrix verify that TPS61011DGSG4 is sourced from the original manufacturer or authorized distributors?
All TPS61011DGSG4 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 TPS61011DGSG4 meets industry standards.
7.What is the process for return or replacement of TPS61011DGSG4?
All TPS61011DGSG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61011DGSG4, 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 TPS61011DGSG4 part is unused and in its original packaging.
Return procedure for TPS61011DGSG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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