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Texas Instruments TPS61000DGS
- Part No.:
- TPS61000DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61000DGS.pdf
- Description:
- IC REG BOOST ADJ 1.3A 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,739
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Product details
Overview
TPS61000DGS from Texas Instruments is an adjustable-output, non-synchronous boost converter IC designed for single- or dual-cell battery-powered systems. It starts up into full load at 0.9 V, delivers ≥100 mA output current from 0.8-V input, supports 1.5–3.3 V programmable output voltage, and operates in fixed-frequency PWM (500 kHz) with power-save mode. It is used in portable medical diagnostics where low-voltage battery operation and stable regulated rail generation are critical.
For engineers reviewing the TPS61000DGS datasheet, TPS61000DGS pinout, TPS61000DGS application, or TPS61000DGS equivalent, key selection criteria include start-up voltage under 0.9 V, feedback reference accuracy (468–515 mV), integrated low-battery comparator (LBI/LBO), antiringing switch for EMI reduction, and MSOP-10 package compatibility with space-constrained handheld designs.
Technical Context
The TPS61000DGS implements a current-mode PWM controller with 500-kHz fixed switching frequency and automatic transition to pulse-skipping power-save mode below light loads. Its internal current limit (1.1 A max) protects the integrated switch during transient overloads, while the COMP pin requires external R-C-C compensation for loop stability across input/output variations.
It integrates a low-battery detector with 500-mV threshold on LBI and open-drain LBO output, plus an antiringing switch that clamps SW-node ringing to VBAT during discontinuous conduction-reducing radiated EMI without external snubbers. The FB pin enables output voltage programming via external resistor divider; NC/FBGND is not present on this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 1.5 V to 3.3 V, adjustable via external FB resistor divider; enables flexible rail generation for mixed-voltage subsystems. |
| Start-Up Input Voltage | 0.9 V (min) into full load, allowing operation down to near-dead alkaline/NiMH cells without brownout. |
| Max Output Current | 100 mA @ 0.8-V input; sufficient for microcontroller + sensor + RF transceiver subsystems in ultra-low-power devices. |
| Oscillator Frequency | 360–840 kHz (typ 500 kHz); balances efficiency, inductor size, and EMI filtering requirements in portable layouts. |
| Feedback Reference | 468–515 mV (typ 500 mV); defines output regulation accuracy and sets minimum FB resistor values for noise immunity. |
| Quiescent Current | 44 µA (typ); minimizes battery drain during standby, extending shelf life of infrequently used medical instruments. |
| Shutdown Current | 0.2–5 µA (max); ensures negligible leakage when EN = GND, critical for long-term storage in remote sensors. |
Pinout & Package
TPS61000DGS is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm, optimized for high-density portable PCBs. Thermal resistance is RθJA = 160.6°C/W, requiring minimal copper area for thermal relief in battery-operated applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Chip-enable input | Active-high logic control; ties to MCU GPIO for system-level power sequencing and zero-current shutdown. |
| COMP | Compensation node | Connects external R-C-C network to stabilize control loop; determines phase margin and transient response. |
| FB | Feedback input | Accepts voltage divider from VOUT to set output; unused in fixed-output variants but essential for TPS61000's adjustability. |
| GND | Power ground | Primary return path for switch current and analog circuitry; must be low-impedance and separated from noisy digital grounds. |
| VOUT | Regulated output | Delivers final boosted rail; connects to bulk capacitor (22 µF) and downstream LDOs or digital loads. |
| LBO | Low-battery open-drain output | Drives MCU interrupt line when LBI voltage drops below 500 mV; requires external pullup to VOUT. |
| LBI | Low-battery input | Monitors scaled battery voltage; threshold hysteresis (10 mV) prevents chatter during gradual discharge. |
| SW | Switch node | Connects to inductor and Schottky diode anode; carries high dI/dt pulses-requires short, wide trace routing. |
| VBAT | Battery input | Accepts 0.8–3.3 V raw battery; includes UVLO (~0.7 V) to prevent erratic startup from deeply discharged cells. |
| NC | No-connect | Not bonded internally; must remain unconnected per datasheet to avoid parasitic coupling or latch-up. |
Key Features
| Feature | Design Value |
|---|---|
| Start-up into full load at 0.9 V | Enables reliable boot from weak batteries without external charge-pump assist or pre-bias circuits. |
| Integrated low-battery comparator | Eliminates need for external supervisor IC; LBI/LBO pair provides configurable battery monitoring with <10 µA bias current. |
| Antiringing switch | Dampens SW-node oscillation during DCM, reducing conducted/radiated EMI by >10 dB without added snubber components. |
| Power-save mode | Maintains >80% efficiency at 1–10 mA loads by skipping pulses-critical for intermittent-sensing wearable devices. |
| 10-pin MSOP package | 3×3 mm footprint supports miniaturized PCBs in hearing aids, glucose meters, and compact IoT sensors. |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
Use Scenario: Handheld blood oxygen saturation (SpO₂) meter powered by single AAA alkaline cell. IC Role / Device Role / Timing Role: Boosts 0.9–1.5 V battery output to stable 3.3 V rail for optical sensor, ADC, and BLE radio. Use Value: Enables continuous measurement down to 0.9 V battery voltage, extending usable runtime by 25% versus legacy boosters. |
Use Scenario: Bluetooth earbud with voice assistant requiring clean 1.8 V core supply from 1.2 V NiMH cell. IC Role / Device Role / Timing Role: Generates regulated 1.8 V from variable battery; FB pin sets precise output for DSP voltage domain. Use Value: Power-save mode cuts no-load current to 44 µA, adding >48 hours of standby time between charges. |
| Pagers | Remote Controls |
Use Scenario: Two-way pager using dual NiMH cells (2.4 V nominal) powering LCD and RF front-end. IC Role / Device Role / Timing Role: Provides 3.0 V rail with tight load regulation (<0.25%) to maintain display contrast and receiver sensitivity. Use Value: Integrated LBO alerts host MCU of battery depletion before communication failure occurs. |
Use Scenario: IR remote with motion wake-up, powered by single AA alkaline cell. IC Role / Device Role / Timing Role: Supplies 3.3 V to ultra-low-power MCU and accelerometer; EN pin enables instant wake-on-motion. Use Value: 0.2 µA shutdown current preserves battery for >1 year in storage without user intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61006DGS | Fixed 3.3 V output; no FB pin required; same pinout and thermal specs. | Eliminates external resistor divider but lacks output flexibility for multi-rail systems. | Select when only 3.3 V is needed and board space is constrained-no layout change required. |
| MAX1703ESA+ | Higher 1.2-A switch current limit; 1.2-MHz switching; SO-8 package (larger than MSOP-10). | Better suited for higher-current loads (>150 mA) but increases EMI filtering complexity and PCB area. | Choose for applications needing >100 mA sustained output with tighter ripple tolerance, accepting larger footprint. |
Compared with TPS61000DGS, TPS61006DGS simplifies design for fixed 3.3 V use cases with identical packaging and thermal behavior, while MAX1703ESA+ trades MSOP-10 compactness for higher current capability and faster switching-requiring careful EMI mitigation in sensitive RF environments.
Availability
TPS61000DGS is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, pagers, and remote controls requiring stable component supply across extended production lifecycles.
Supply support for TPS61000DGS 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 ICs for battery-operated systems.
The TPS6100x family was engineered specifically for ultra-low-input-voltage boost conversion in single- and dual-cell battery applications-prioritizing start-up reliability, efficiency across load range, and integrated protection features.
FAQ
What is the minimum input voltage required for TPS61000DGS to start up into full load?
The TPS61000DGS starts up into full load at 0.9 V (typical) across the full temperature range, and remains operational down to 0.8 V once running. This specification is verified per SLVS279D Rev D, Figure 10, and enables reliable operation from nearly depleted alkaline or NiMH cells. The TPS61000DGS achieves this via optimized UVLO hysteresis and low-quiescent-current biasing.
Can TPS61000DGS be used with a fixed output voltage without external resistors?
No-TPS61000DGS is the adjustable-output variant of the family and requires an external resistor divider connected between VOUT, FB, and GND to set the output voltage between 1.5 V and 3.3 V. Fixed-output versions like TPS61006DGS integrate the divider internally; using TPS61000DGS without FB resistors results in undefined output voltage and potential regulation failure.
How does the low-battery detection function work on TPS61000DGS?
The TPS61000DGS uses the LBI pin to monitor a scaled-down battery voltage; when LBI falls below 500 mV ±15 mV, the open-drain LBO pin pulls low. This signal can trigger MCU interrupts or LED warnings. The LBI pin must never float-it should connect to GND or VBAT if unused. The TPS61000DGS implements 10 mV hysteresis to prevent false triggering during gradual discharge.
What is the purpose of the COMP pin on TPS61000DGS, and how is it configured?
The COMP pin on TPS61000DGS is the error amplifier output node, requiring an external R-C-C compensation network to stabilize the control loop. Per SLVS279D Section 10.2.2.2, typical values are 10 kΩ, 100 pF, and 33 nF. Incorrect compensation causes oscillation or poor transient response. The TPS61000DGS datasheet provides design equations and stability criteria based on selected inductor and output capacitor values.
Is TPS61000DGS compatible with ceramic output capacitors?
Yes-TPS61000DGS is fully compatible with ceramic output capacitors, and the datasheet specifies a minimum 22 µF X5R/X7R type. Ceramic caps reduce ESR-related losses and improve transient response versus electrolytic alternatives. The TPS61000DGS antiringing switch further enhances compatibility by suppressing LC resonance spikes that could destabilize low-ESR ceramics.
TPS61000DGS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 3.3V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 1.3A (Switch)
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS61000DGS FAQ
1.How can I place an order for TPS61000DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61000DGS 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 TPS61000DGS reliable?
The price and inventory of TPS61000DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61000DGS is usually 5 days.
3.What payment methods are accepted for TPS61000DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61000DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61000DGS?
TPS61000DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61000DGS 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 TPS61000DGS?
For technical support, including TPS61000DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61000DGS requirements.
6.How does Aetrix verify that TPS61000DGS is sourced from the original manufacturer or authorized distributors?
All TPS61000DGS 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 TPS61000DGS meets industry standards.
7.What is the process for return or replacement of TPS61000DGS?
All TPS61000DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS61000DGS, 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 TPS61000DGS part is unused and in its original packaging.
Return procedure for TPS61000DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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