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Texas Instruments TPS61002DGS
- Part No.:
- TPS61002DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61002DGS.pdf
- Description:
- IC REG BOOST 1.8V 1.3A 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,241
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Product details
Overview
TPS61002DGS from Texas Instruments is a fixed-output 2.5 V, non-synchronous boost converter for single- or dual-cell battery systems. It delivers up to 250 mA from 1.8 V input, starts up at 0.8 V, integrates low-battery detection (LBI/LBO), and operates in power-save mode for high light-load efficiency. It targets portable medical diagnostics and wireless headsets requiring stable low-voltage rail generation.
For engineers reviewing the TPS61002DGS datasheet, TPS61002DGS pinout, TPS61002DGS application, or TPS61002DGS equivalent, key selection factors include its 2.5 V fixed output, 10-pin MSOP package, 500 kHz switching frequency, integrated antiringing switch for EMI reduction, and low-quiescent-current shutdown mode.
Technical Context
The TPS61002DGS implements a fixed-frequency current-mode PWM controller with automatic transition into power-save mode below ~10 mA load. Its internal 500 mV feedback reference and factory-trimmed resistive divider set the precise 2.5 V output without external components.
It integrates undervoltage lockout (UVLO) at ~0.7 V, a dedicated low-battery comparator with 500 mV threshold and 10 mV hysteresis on LBI/LBO, and an antiringing switch that clamps SW-node ringing to VBAT during discontinuous conduction mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±3% over line, load, and temperature - eliminates need for external feedback resistors. |
| Max Output Current | 250 mA from 1.8 V input - supports moderate-power peripherals like RF transceivers or LCD bias rails. |
| Start-up Voltage | 0.8 V minimum - enables operation deep into single-cell alkaline or NiMH discharge curve. |
| Switching Frequency | 500 kHz typical - balances inductor size, efficiency, and EMI filtering requirements. |
| Quiescent Current | <50 µA in active mode - extends battery life in always-on sensor nodes. |
| Shutdown Current | 0.2 µA - preserves battery charge during system standby or sleep states. |
| Oscillator Accuracy | ±40% over temperature - sufficient for non-critical timing; not suitable as system clock source. |
Pinout & Package
TPS61002DGS is housed in a 10-pin VSSOP (DGS) package, 3.00 mm × 3.00 mm body size, with exposed thermal pad (not electrically connected). Pin numbering follows standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high logic control; pulls device into ultra-low-IQ shutdown when grounded. |
| COMP (Pin 2) | Compensation node | Connects external R-C-C network to stabilize control loop; critical for transient response and stability. |
| FB (Pin 3) | Feedback input | No connection required - internal divider sets 2.5 V output; floating per datasheet. |
| GND (Pin 4) | Power ground | Main return path for switch current and control circuitry; must be low-impedance. |
| VOUT (Pin 5) | Regulated output | Delivers 2.5 V to load; requires ≥22 µF ceramic output capacitor for stability and ripple suppression. |
| LBO (Pin 10) | Open-drain low-battery flag | Sinks current when LBI voltage drops below 500 mV; requires external pull-up to VOUT. |
| LBI (Pin 9) | Low-battery sense input | Monitors scaled battery voltage; connect to GND if unused - never leave floating. |
| NC/FBGND (Pin 8) | No-connect | Not bonded internally; no electrical function on TPS61002DGS (reserved for TPS61007). |
| SW (Pin 7) | Switch node | Connects to inductor and Schottky diode anode; carries high di/dt - layout critical for EMI. |
| VBAT (Pin 6) | Battery input | Accepts 0.8–3.3 V; feeds internal UVLO, oscillator, and gate driver - primary power source. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated low-battery comparator | 500 mV threshold with 10 mV hysteresis on LBI/LBO - enables host MCU to initiate graceful shutdown before brownout. |
| Antiringing switch | Clamps SW-node ringing to VBAT during DCM - reduces radiated EMI by >10 dB compared to basic boost topologies. |
| Power-save mode | Disables switching until output droops below regulation window - maintains >80% efficiency down to 100 µA load. |
| Ultra-low shutdown current | 0.2 µA max - allows multi-year shelf life in battery-powered IoT endpoints with infrequent wake cycles. |
| Start-up into full load | Operates at 0.8 V input with 100 mA load - avoids cold-start failure in aging alkaline cells under load. |
Applications
| Wireless Headset Power Management | Portable Medical Glucometer |
|---|---|
Use Scenario: Powers Bluetooth audio codec and MEMS microphone from single AAA alkaline cell. IC Role / Device Role / Timing Role: Primary 2.5 V rail generator with battery health monitoring via LBO flag. Use Value: Enables 12+ hour runtime at 2.5 V/80 mA while signaling end-of-life via LBO before system reset. | Use Scenario: Supplies 2.5 V to glucose sensor interface and low-power ADC in handheld diagnostic device. IC Role / Device Role / Timing Role: Stable analog rail generator with start-up capability down to 0.8 V for reliable first-use activation. Use Value: Guarantees accurate sensor readings across full battery discharge (1.5 V → 0.9 V) without rail collapse. |
| Remote Control Transmitter | Industrial Sensor Node |
Use Scenario: Generates 2.5 V for IR LED driver and microcontroller in battery-operated HVAC remote. IC Role / Device Role / Timing Role: High-efficiency boost regulator with EN-controlled burst mode for intermittent transmit duty cycle. Use Value: Extends 2× AA battery life to >18 months by minimizing quiescent draw during 99.9% idle time. | Use Scenario: Powers LoRaWAN transceiver and environmental sensors in sealed industrial enclosure. IC Role / Device Role / Timing Role: Primary DC-DC stage with LBO-triggered data logging before battery depletion. Use Value: Prevents data loss by initiating final transmission when LBI detects <1.0 V pack voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61022RGET | 2.5 V fixed output, 1.8-A max, 2-MHz switching, QFN-16 - higher current, smaller inductor, no LBO. | Lacks integrated low-battery flag; requires external comparator for battery monitoring. | Choose when >250 mA load or space-constrained PCB demands smaller passive components. |
| MAX77801EWA+T | 2.5 V fixed output, 1.2-A max, I²C programmable, WLP-20 - includes telemetry, no LBO pin. | Requires I²C host for configuration; no hardware LBO interrupt - software polling needed. | Prefer when system-level battery telemetry (voltage, current, temp) justifies added firmware complexity. |
Compared with TPS61002DGS, TPS61022RGET offers higher output current and frequency but removes battery monitoring; MAX77801EWA+T adds digital control and telemetry at cost of pin count, layout area, and BOM complexity - TPS61002DGS remains optimal for simple, low-cost, hardware-flagged battery systems.
Availability
TPS61002DGS is available at Aetrix Electronics and suitable for wireless headsets, portable medical diagnostics, remote controls, and industrial sensor nodes requiring stable component supply with long-term lifecycle support.
Supply support for TPS61002DGS 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 specializing in analog and embedded processing technologies, with leadership in power management ICs for battery-powered applications.
The TPS6100x family was designed specifically for ultra-low-voltage start-up and efficient boosting in single- and dual-cell portable electronics - prioritizing minimal external components, integrated protection, and robust operation across battery discharge curves.
FAQ
What is the exact output voltage tolerance of the TPS61002DGS?
The TPS61002DGS delivers a nominal 2.5 V output with ±3% tolerance over full operating conditions - including input voltage range (0.8 V to 3.3 V), output load (0 to 250 mA), and temperature (–40°C to +85°C). This specification is guaranteed by factory trimming of the internal feedback divider and referenced to the 500 mV bandgap voltage.
Can the TPS61002DGS operate from a single NiMH cell throughout its full discharge curve?
Yes. The TPS61002DGS starts up at 0.8 V and sustains regulation down to that input voltage, covering the entire useful discharge range of a single NiMH cell (1.2 V nominal, ~0.9 V end-of-discharge). Its power-save mode maintains >80% efficiency even at 100 µA load, extending usable runtime significantly.
Is an external feedback resistor divider required for the TPS61002DGS?
No. The TPS61002DGS is a fixed-output variant with an internal resistor divider tied to its 500 mV reference. Pin FB (3) must remain unconnected per the datasheet - adding external resistors would disrupt regulation and is not supported.
How does the low-battery detection function work on the TPS61002DGS?
The TPS61002DGS uses LBI (Pin 9) to monitor a scaled battery voltage. When LBI falls below 500 mV ±15 mV, LBO (Pin 10) pulls low as an open-drain flag. For fixed-threshold detection, connect LBI directly to GND; for user-defined thresholds, use a resistor divider from VBAT to GND with LBI at the midpoint.
What is the recommended inductor value and type for the TPS61002DGS?
Texas Instruments specifies a 33 µH shielded power inductor (e.g., Coilcraft DO3308P-333) for the TPS61002DGS. Inductor saturation current must exceed 1.1 A to avoid tripping the internal 1.1-A switch current limit under peak load. Ceramic input (10 µF) and output (22 µF) capacitors are mandatory for stability and ripple control.
TPS61002DGS 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):
- 1.8V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- 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
TPS61002DGS FAQ
1.How can I place an order for TPS61002DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61002DGS 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 TPS61002DGS reliable?
The price and inventory of TPS61002DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61002DGS is usually 5 days.
3.What payment methods are accepted for TPS61002DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61002DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61002DGS?
TPS61002DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61002DGS 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 TPS61002DGS?
For technical support, including TPS61002DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61002DGS requirements.
6.How does Aetrix verify that TPS61002DGS is sourced from the original manufacturer or authorized distributors?
All TPS61002DGS 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 TPS61002DGS meets industry standards.
7.What is the process for return or replacement of TPS61002DGS?
All TPS61002DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS61002DGS, 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 TPS61002DGS part is unused and in its original packaging.
Return procedure for TPS61002DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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