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Texas Instruments TPS61002DGSR
- Part No.:
- TPS61002DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61002DGSR.pdf
- Description:
- IC REG BOOST 1.8V 1.3A 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,248
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Product details
Overview
TPS61002DGSR from Texas Instruments is a fixed-output 2.5 V, non-synchronous boost converter optimized for single- or dual-cell battery systems. It delivers up to 250 mA from 1.8 V input, starts up into full load at 0.9 V, integrates low-battery detection (LBI/LBO), and operates in power-save mode below ~10 mA to maintain >85% efficiency at light loads - used in portable medical diagnostics and wireless headsets.
For engineers reviewing the TPS61002DGSR datasheet, TPS61002DGSR pinout, TPS61002DGSR application, or TPS61002DGSR equivalent, key selection criteria include minimum start-up voltage (0.9 V), fixed 2.5 V output accuracy (±3% over temp/load), integrated antiringing switch for EMI reduction, and MSOP-10 package compatibility with space-constrained handheld designs.
Technical Context
The TPS61002DGSR implements a fixed-frequency (500 kHz) current-mode PWM controller with pulse-skipping power-save mode activation below discontinuous conduction threshold. Its internal 1.1 A switch current limit (typ.) and 0.27 Ω rDS(on) enable stable 250 mA delivery from 1.8 V input while maintaining <50 µA quiescent current.
It integrates a dedicated low-battery comparator (500 mV threshold, 10 mV hysteresis) referenced to LBI/LBO pins and an antiringing switch that clamps SW-to-VBAT during diode reverse recovery - reducing radiated EMI without external snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±3% over –40°C to 85°C; enables direct powering of 2.5 V logic without external feedback resistors. |
| Max Output Current | 250 mA from 1.8 V input; supports sustained operation in dual-cell NiMH/alkaline systems. |
| Start-up Voltage | 0.9 V into full load; allows reliable boot from deeply discharged single-cell batteries. |
| Quiescent Current | <50 µA; minimizes standby drain in always-on portable devices like remote controls. |
| Oscillator Frequency | 500 kHz nominal; balances inductor size (33 µH typical) and switching loss for compact PCB layouts. |
| Switch rDS(on) | 0.27 Ω max; reduces conduction loss and thermal rise at 250 mA output. |
| Low-Battery Threshold | 500 mV ±15 mV on LBI pin; provides programmable battery monitoring with 10 mV hysteresis. |
Pinout & Package
TPS61002DGSR 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high digital control; pulls device into shutdown (ISD < 0.5 µA) when grounded. |
| COMP | Compensation node | Connects external R-C-C network to stabilize control loop; critical for transient response and stability. |
| FB | Feedback input | No connection required - internal resistor divider sets fixed 2.5 V output; floating per datasheet. |
| GND | Power ground | Primary return path for switch current and control circuitry; must be low-impedance plane. |
| LBI | Low-battery input | Analog sense pin; accepts scaled battery voltage; must not float - tie to GND or VBAT if unused. |
| LBO | Low-battery output | Open-drain flag; sinks current when LBI < 500 mV; requires external pullup to VOUT. |
| NC/FBGND | No-connect | Not bonded internally; leave unconnected - differs from TPS61007's FBGND function. |
| SW | Switch node | Connects to inductor/diode junction; carries pulsed 1.1 A peak current; requires tight layout to minimize EMI. |
| VBAT | Battery input | Accepts 0.8–3.6 V; includes UVLO (≈0.7 V) to prevent malfunction during deep discharge. |
| VOUT | Regulated output | Delivers 2.5 V ±3%; supplies system load; decoupled with 22 µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Power-save mode | Automatically engages below ~10 mA load to reduce switching losses - maintains >85% efficiency at 1 mA output. |
| Integrated antiringing switch | Clamps SW node to VBAT during diode reverse recovery, eliminating external snubber and cutting radiated EMI by >10 dB. |
| Low-battery comparator | Dedicated 500 mV threshold with 10 mV hysteresis on LBI/LBO pins - enables precise, self-contained battery monitoring. |
| Start-up into full load | Operates from 0.9 V input with 33 Ω load (75 mA); sustains regulation down to 0.8 V after startup - extends usable battery life. |
| Micro-size packaging | 3.0 mm × 3.0 mm VSSOP-10 footprint saves >40% board area vs. SOIC-8 alternatives - ideal for hearing aids and wearables. |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters requiring stable 2.5 V rail from single alkaline cell. IC Role / Device Role / Timing Role: Primary DC-DC boost regulator delivering regulated 2.5 V to ADC, microcontroller, and display driver. Use Value: 0.9 V start-up enables full functionality until battery reaches 0.8 V, extending field-use time by ~18% vs. 1.0 V-start competitors. | Use Scenario: Compact Bluetooth earbuds powered by single NiMH cell (0.9–1.4 V range). IC Role / Device Role / Timing Role: System power supply generating 2.5 V for RF transceiver and DSP core. Use Value: Integrated antiringing switch eliminates need for external EMI filter components, reducing BOM count and enabling sub-20 mm² PCB area. |
| Remote Controls | Pagers |
Use Scenario: IR remote with LCD and backlight operating from two AAA alkaline cells (2.0–3.0 V). IC Role / Device Role / Timing Role: Fixed-output boost converter supplying 2.5 V to MCU and IR LED driver. Use Value: <50 µA quiescent current ensures >2-year shelf life with coin-cell backup; EN pin enables zero-drain sleep mode. | Use Scenario: Legacy two-way pagers using dual NiCd cells (1.6–2.4 V) needing clean 2.5 V for baseband IC. IC Role / Device Role / Timing Role: Main power regulator with integrated low-battery warning (LBI/LBO) for user alert. Use Value: Programmable LBI threshold via external resistor divider allows precise end-of-life detection at 1.8 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 | Higher 3.6 V max input, 2.0 A switch, synchronous rectification, 1.2 MHz fSW - but larger 16-pin QFN package. | Supports wider input (0.5–4.5 V) and higher output current (1.2 A), unsuitable for ultra-low-IQ or MSOP footprint constraints. | Select when >500 mA output or synchronous efficiency is required; avoid if board space or <50 µA IQ is critical. |
| MAX77801EWA+T | Fixed 2.5 V output, 1.2 A switch, 2.2 MHz fSW, integrated LDO, smaller 12-pin WLP - but 2.5 µA IQ, no LBI/LBO. | Lacks battery monitoring; targets ultra-low-power wearables where EMI and size outweigh low-battery alert needs. | Choose for sub-1 mm² footprint and lowest possible IQ; omit if system-level battery state reporting is mandatory. |
Compared with TPS61002DGSR, TPS61022RGET offers higher current and frequency at the cost of size and quiescent current, while MAX77801EWA+T prioritizes miniaturization and ultra-low IQ but sacrifices integrated battery monitoring - making TPS61002DGSR optimal for cost-sensitive, battery-aware portable designs needing proven 250 mA capability in MSOP-10.
Availability
TPS61002DGSR is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, remote controls, and pagers requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for TPS61002DGSR 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 designed specifically for ultra-low-voltage, high-efficiency boost conversion in single- and dual-cell battery applications - emphasizing start-up reliability, integrated protection, and minimal external component count.
FAQ
What is the minimum input voltage required for TPS61002DGSR to start up under load?
The TPS61002DGSR starts up into a full load at 0.9 V across the specified temperature range (–40°C to 85°C). Once started, it continues regulating down to 0.8 V input. This capability is verified per SLVS279D Figure 10 and Section 7.5, enabling operation from deeply discharged single-cell batteries. The TPS61002DGSR achieves this via optimized UVLO hysteresis and low-threshold gate drive design.
Does TPS61002DGSR require external feedback resistors to set its output voltage?
No, the TPS61002DGSR has an internal resistor divider that fixes the output voltage at 2.5 V. The FB pin is not connected in this variant (per datasheet Table 5 and Pin Functions section), eliminating external resistor placement, tolerance errors, and board space. This distinguishes it from adjustable versions like TPS61000 or TPS61007, and simplifies design for fixed-rail applications.
How does the low-battery detection feature work on TPS61002DGSR?
The TPS61002DGSR uses dedicated LBI and LBO pins: LBI accepts a scaled battery voltage, and when it drops below 500 mV ±15 mV, the open-drain LBO pin pulls low. A pullup resistor to VOUT is required. The comparator remains active only when EN is high. If unused, LBI must be tied to GND or VBAT - never left floating - to prevent erratic behavior. This function is fully integrated and requires no external comparators.
What is the purpose of the NC/FBGND pin on TPS61002DGSR?
The NC/FBGND pin (Pin 8) is a no-connect terminal in the TPS61002DGSR. It is not bonded internally and must remain unconnected. This differs from the TPS61007, where the same pin serves as FBGND for the feedback divider ground reference. Confusing this pin with a functional ground can cause layout errors; the TPS61002DGSR relies solely on Pin 4 (GND) for all ground returns.
Can TPS61002DGSR operate efficiently at very light loads, such as 100 µA?
Yes, the TPS61002DGSR enters power-save mode automatically at light loads (typically below ~10 mA), reducing switching frequency and minimizing gate drive losses. At 100 µA output, efficiency remains above 70% (per Figure 8), and quiescent current stays below 50 µA. This behavior is inherent to its current-mode architecture and enables multi-year battery life in always-on remote sensors and memory backup circuits using the TPS61002DGSR.
TPS61002DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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):
- 1.8V
- 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
TPS61002DGSR FAQ
1.How can I place an order for TPS61002DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61002DGSR 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 TPS61002DGSR reliable?
The price and inventory of TPS61002DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61002DGSR is usually 5 days.
3.What payment methods are accepted for TPS61002DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61002DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61002DGSR?
TPS61002DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61002DGSR 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 TPS61002DGSR?
For technical support, including TPS61002DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61002DGSR requirements.
6.How does Aetrix verify that TPS61002DGSR is sourced from the original manufacturer or authorized distributors?
All TPS61002DGSR 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 TPS61002DGSR meets industry standards.
7.What is the process for return or replacement of TPS61002DGSR?
All TPS61002DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61002DGSR, 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 TPS61002DGSR part is unused and in its original packaging.
Return procedure for TPS61002DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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