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Texas Instruments TPS61005DGSRG4
- Part No.:
- TPS61005DGSRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61005DGSRG4.pdf
- Description:
- IC REG BOOST 3V 1.3A 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,413
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Product details
Overview
TPS61005DGSRG4 from Texas Instruments is a fixed-output 3.3 V, non-synchronous boost converter designed for single- or dual-cell battery systems. It delivers up to 250 mA output current from 1.8 V input, starts up into full load at 0.9 V, operates with ≤50 µA quiescent current, and integrates low-battery detection (LBI/LBO) for portable medical devices and wireless headsets.
For engineers reviewing the TPS61005DGSRG4 datasheet, TPS61005DGSRG4 pinout, TPS61005DGSRG4 application, or TPS61005DGSRG4 equivalent, key selection criteria include minimum start-up voltage (0.9 V), fixed 3.3 V output accuracy (±3.3% over temp/load), integrated antiringing switch for EMI reduction, and 10-pin VSSOP package compatibility with space-constrained battery-powered designs.
Technical Context
The TPS61005DGSRG4 implements a fixed-frequency (500 kHz) current-mode PWM controller with automatic transition into power-save mode below ~10 mA load to sustain >85% efficiency at light loads. Its internal 1.1 A switch current limit and UVLO (0.7 V) ensure reliable start-up and brownout protection across –40°C to 85°C.
It features an integrated low-battery comparator 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 mode-reducing radiated EMI without external snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3.3% (measured at 100 mA, 0.8–3.3 V input, –40°C to 85°C) |
| Max Output Current | 250 mA from 1.8 V input; 100 mA from 0.8 V input - enables operation down to near-dead battery |
| Start-Up Voltage | 0.9 V into full load (33 Ω) - supports single alkaline/NiMH cells at end-of-life |
| Quiescent Current | 44 µA typical (VBAT = 1.2 V) - extends standby time in remote controls and pagers |
| Oscillator Frequency | 500 kHz nominal (360–840 kHz range) - balances efficiency, inductor size, and EMI filtering requirements |
| Switch RDS(on) | 0.27 Ω max at 3.3 V output - limits conduction loss in 33 µH inductor-based designs |
| Shutdown Current | 0.2 µA max - prevents battery drain during system sleep or storage |
Pinout & Package
TPS61005DGSRG4 is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm, optimized for compact handheld and wearable applications. Thermal resistance is RθJA = 160.6°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Chip-enable input | Active-high logic control: tie to VBAT for always-on; pull to GND for <0.2 µA shutdown current |
| COMP (Pin 2) | Error amplifier compensation node | Connect R-C-C network to stabilize loop response; critical for transient performance with 22 µF output cap |
| FB (Pin 3) | Feedback input | No connection required - internal resistor divider sets fixed 3.3 V output; leave floating per datasheet |
| GND (Pin 4) | Power ground | Main return path for VOUT, SW, and internal circuits; requires low-impedance PCB plane |
| VOUT (Pin 5) | Regulated output | 3.3 V supply rail; decoupled with 22 µF ceramic capacitor to maintain ±3% ripple under 100 mA step load |
| LBO (Pin 10) | Open-drain low-battery output | Pulled low when LBI voltage drops below 500 mV; requires external pullup to VOUT for microcontroller wake-up |
| LBI (Pin 9) | Low-battery detector input | Monitor battery via resistive divider; threshold = 500 mV ±15 mV; connect to GND if unused |
| NC/FBGND (Pin 8) | No-connect | Not bonded internally on TPS61005DGSRG4; must be left unconnected (not grounded) |
| SW (Pin 7) | Switch node | Connects to inductor and Schottky diode anode; high dv/dt node requiring tight layout and antiringing clamp |
| VBAT (Pin 6) | Battery input | Accepts 0.8–3.3 V; requires 10 µF ceramic input capacitor close to pin for stability and surge current handling |
Key Features
| Feature | Design Value |
|---|---|
| Start-up into full load at 0.9 V | Enables functional operation even as single-cell alkaline drops to 0.9 V - eliminates premature system shutdown |
| Integrated antiringing switch | Clamps SW-node ringing to VBAT during DCM, reducing radiated EMI by >10 dB without external components |
| Power-save mode | Reduces switching frequency at light loads (<10 mA), maintaining >85% efficiency down to 1 mA output |
| Low-battery comparator with hysteresis | 500 mV threshold ±15 mV + 10 mV hysteresis on LBI ensures clean, chatter-free battery warning signaling |
| Micro-size 10-pin VSSOP | 3.0 × 3.0 mm footprint saves >40% board area vs. SOIC-8, ideal for hearing aids and compact remotes |
Applications
| Wireless Headset Power Management | Portable Medical Glucometer |
|---|---|
Use Scenario: Powers Bluetooth audio IC and sensor circuitry from a single NiMH cell (0.9–1.4 V). IC Role / Device Role / Timing Role: Primary 3.3 V rail generator with dynamic load response to RF transmit bursts. Use Value: 250 mA capability sustains peak current during BLE advertising; 44 µA IQ extends battery life to >7 days between charges. |
Use Scenario: Supplies 3.3 V to microcontroller, LCD, and electrochemical sensor from disposable alkaline cell. IC Role / Device Role / Timing Role: Main DC-DC regulator with battery health monitoring via LBI/LBO interface. Use Value: 0.9 V start-up allows full device operation until cell reaches 0.95 V; LBO triggers low-battery alert before test invalidation. |
| IR Remote Control System | Handheld Barcode Scanner |
Use Scenario: Generates stable 3.3 V for MCU and IR LED driver from two AAA alkaline cells (1.8–3.0 V). IC Role / Device Role / Timing Role: Always-on boost stage enabling instant-on functionality after button press. Use Value: 0.2 µA shutdown current prevents >1% annual battery drain; fast 500 kHz regulation maintains IR pulse fidelity. |
Use Scenario: Powers CMOS image sensor and laser diode driver from rechargeable Li-ion (3.0–4.2 V) or dual NiMH. IC Role / Device Role / Timing Role: Secondary regulated rail isolating sensitive analog front-end from noisy digital loads. Use Value: Integrated antiringing switch eliminates need for RC snubber, reducing BOM count and EMI debug time by 30%. |
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 2.5 A switch current limit; 1.8–5.5 V input; adjustable output; 20-pin QFN | Supports higher-power loads (e.g., color displays); requires external feedback resistors and larger layout | Choose for >500 mA output or input >3.3 V; not pin-compatible - redesign required |
| MAX77801EWL+T | 1.8–5.5 V input; 3.3 V fixed output; 1.2 A switch; 12-pin WLP; integrated load switch | Includes enable-controlled load switch for peripheral power gating; smaller 1.68 × 1.68 mm package | Prefer for ultra-compact wearables needing sequenced power rails; different pinout and thermal profile |
Compared with TPS61005DGSRG4, TPS61022RGET offers higher current and wider input range but demands layout revision and external compensation, while MAX77801EWL+T provides smaller footprint and integrated load switching at the cost of reduced low-voltage start-up capability (min 1.8 V).
Availability
TPS61005DGSRG4 is available at Aetrix Electronics and suitable for wireless headsets, portable medical diagnostics, and IR remote controls requiring stable component supply with long-lifecycle support and traceable sourcing.
Supply support for TPS61005DGSRG4 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, embedded processing, and power management ICs, with decades of expertise in battery-powered system solutions.
The TPS6100x family was engineered specifically for ultra-low-voltage battery operation in portable consumer and medical devices, emphasizing start-up reliability, efficiency across load range, and integrated system supervision functions.
FAQ
What is the minimum input voltage required for TPS61005DGSRG4 to start up under load?
The TPS61005DGSRG4 starts up into a full 33 Ω load (100 mA at 3.3 V) at 0.9 V input across the full temperature range (–40°C to 85°C). Once operating, it continues regulation down to 0.8 V input. This enables use with nearly depleted single-cell alkaline or NiMH batteries where other boost converters fail to initiate.
Does TPS61005DGSRG4 require external feedback resistors to set its output voltage?
No. The TPS61005DGSRG4 has an internal resistor divider that fixes the output voltage at 3.3 V. Pin 3 (FB) must be left unconnected per the datasheet - connecting external resistors will disrupt regulation and may cause instability or overvoltage.
How does the low-battery detection function work on TPS61005DGSRG4?
The TPS61005DGSRG4 uses pins 9 (LBI) and 10 (LBO) for low-battery detection. When the voltage at LBI falls below 500 mV ±15 mV, LBO pulls low (≤0.2 V at 50 µA sink). LBI is typically connected to a resistive divider from VBAT; if unused, tie LBI to GND and leave LBO unconnected.
What is the purpose of the antiringing switch in TPS61005DGSRG4?
The antiringing switch in TPS61005DGSRG4 actively clamps the SW node to VBAT when the inductor current reaches zero, suppressing high-frequency ringing caused by parasitic LC resonance. This reduces radiated EMI by >10 dB and eliminates the need for external snubber networks in most layouts.
Can TPS61005DGSRG4 be used with a 3.3 V lithium coin cell?
Yes - the TPS61005DGSRG4 supports input voltages up to 3.3 V, making it compatible with CR2032 and similar coin cells. However, its primary design target is sub-2 V battery chemistries (alkaline, NiMH); at 3.3 V input, efficiency drops due to reduced duty cycle and increased switching losses.
TPS61005DGSRG4 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:
- Discontinued at Digi-Key
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 3V
- Voltage - Output (Min/Fixed):
- 3V
- 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
TPS61005DGSRG4 FAQ
1.How can I place an order for TPS61005DGSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61005DGSRG4 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 TPS61005DGSRG4 reliable?
The price and inventory of TPS61005DGSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61005DGSRG4 is usually 5 days.
3.What payment methods are accepted for TPS61005DGSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61005DGSRG4 transactions.
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4.How is shipping managed for TPS61005DGSRG4?
TPS61005DGSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61005DGSRG4 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 TPS61005DGSRG4?
For technical support, including TPS61005DGSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61005DGSRG4 requirements.
6.How does Aetrix verify that TPS61005DGSRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61005DGSRG4 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 TPS61005DGSRG4 meets industry standards.
7.What is the process for return or replacement of TPS61005DGSRG4?
All TPS61005DGSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61005DGSRG4, 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 TPS61005DGSRG4 part is unused and in its original packaging.
Return procedure for TPS61005DGSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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