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Texas Instruments TPS61001DGSR
- Part No.:
- TPS61001DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61001DGSR.pdf
- Description:
- IC REG BOOST 1.5V 1.3A 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TPS61001DGSR from Texas Instruments is a fixed-output 1.8 V boost converter IC for single-cell battery systems, featuring 0.9 V start-up into full load, 100 mA output from 0.8 V input, 500 kHz fixed-frequency current-mode PWM control, and integrated low-battery comparator with 500 mV threshold. It enables reliable power delivery in space-constrained portable audio devices.
For engineers reviewing the TPS61001DGSR datasheet, TPS61001DGSR pinout, TPS61001DGSR application, or TPS61001DGSR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-chain support details specific to the TPS61001DGSR - not the broader TPS6100x family.
Technical Context
The TPS61001DGSR implements a fixed-frequency (360–840 kHz, typ. 500 kHz), current-mode PWM controller with pulse-skipping power-save mode below ~10 mA load. Its internal 1100 mA switch current limit and 0.18 Ω typical rDS(on) enable high-efficiency operation across 0.8–1.8 V input and up to 250 mA output at 1.8 V.
It integrates under-voltage lockout (~0.7 V), antiringing switch clamping SW to VBAT during DCM, and open-drain LBO with 10 mV hysteresis - all active only when EN is high. The FB pin is unconnected in fixed-output variants like TPS61001DGSR, distinguishing it from adjustable TPS61000/TPS61007.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% over temperature and load - ensures stable rail for 1.8 V logic without external feedback components. |
| Start-Up Input Voltage | 0.9 V into 33 Ω load - allows operation from deeply discharged NiMH/NiCd or alkaline cells before system reset. |
| Max Output Current | 100 mA @ 0.8 V input; 250 mA @ 1.8 V input - supports moderate-power peripherals like Bluetooth radios or LCD backlights. |
| Switch Current Limit | 0.65 A (typ.) - sets peak inductor current ceiling; requires inductor saturation rating >650 mA for safe continuous operation. |
| Oscillator Frequency | 500 kHz (typ.), 360–840 kHz range - balances EMI suppression and inductor size; enables use of compact 33 µH shielded inductors. |
| Quiescent Current | 44 µA @ no load - extends battery life in standby; drops to 0.2–5 µA in shutdown via EN pin. |
| Low-Battery Threshold | 500 mV ±15 mV on LBI pin - provides programmable battery monitoring; LBO asserts low when scaled battery voltage falls below threshold. |
Pinout & Package
TPS61001DGSR is housed in a 10-pin MSOP (DGS) package, 3 mm × 3 mm × 1.05 mm, with exposed thermal pad (not electrically connected). Pin 1 is marked by dot; top-side marking "ADB" confirms TPS61001 variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high digital control: tie to VBAT for always-on; pull low to reduce total system current to ≤5 µA. |
| COMP (Pin 2) | Control loop compensation | Connect R-C-C network here to stabilize feedback; required for stability - not left floating or shorted. |
| FB (Pin 3) | Feedback input | No connection required - unused in fixed-output TPS61001DGSR; leaving unconnected avoids regulation errors. |
| GND (Pin 4) | Power ground | Main return path for switch, LBO, and internal circuits; must be low-impedance, separate from noisy digital GND. |
| VOUT (Pin 5) | Regulated output | Delivers 1.8 V to load; requires ≥22 µF ceramic output capacitor (X5R/X7R) placed within 5 mm of pin. |
| LBO (Pin 10) | Open-drain low-battery flag | Pulls low when LBI < 500 mV; needs external 1 MΩ pullup to VOUT - never to VBAT or system rail. |
| LBI (Pin 9) | Low-battery sense input | Accepts scaled battery voltage; connect resistive divider (e.g., 500 kΩ + 500 kΩ) to set trip point at 1.0 V. |
| SW (Pin 7) | Switch node | Connects to inductor and Schottky diode anode; high dv/dt node - minimize trace length and avoid routing near sensitive analog lines. |
| VBAT (Pin 6) | Input supply | Accepts 0.8–1.8 V battery input; requires ≥10 µF ceramic input capacitor placed adjacent to pin. |
| NC (Pin 8) | No connect | Not bonded internally - leave unconnected; do not route traces or apply voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Start-up into full load at 0.9 V | Enables immediate system boot from weak batteries - eliminates need for pre-charge or brownout reset circuitry. |
| Integrated antiringing switch | Dampens SW-node ringing during discontinuous conduction mode, reducing radiated EMI by >10 dB compared to discrete solutions. |
| Power-save mode | Automatically transitions to pulse-skipping below ~10 mA load, maintaining >80% efficiency down to 100 µA output current. |
| Low-battery comparator with hysteresis | Provides accurate, noise-immune battery monitoring using only two external resistors - no external comparator or reference needed. |
| Micro-size 10-pin MSOP package | Reduces PCB area by 60% vs. SOIC-8; thermal pad improves power dissipation margin for 271 mW at 70°C ambient. |
Applications
| Wireless Headset Power Supply | MP3 Player Core Logic Rail |
|---|---|
Use Scenario: Powers Bluetooth audio codec and RF section from single NiMH cell (0.9–1.4 V). IC Role / Device Role / Timing Role: Primary 1.8 V boost regulator supplying core logic, ADC, and DAC circuitry. Use Value: Enables uninterrupted playback down to 0.9 V cell voltage; 44 µA quiescent current extends standby time to >100 hours. | Use Scenario: Generates stable 1.8 V rail for flash memory interface and microcontroller I/O in portable music players. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter delivering regulated supply independent of battery discharge curve. Use Value: Eliminates need for external feedback resistors; 500 kHz switching allows compact 33 µH inductor and 22 µF output cap. |
| Remote Control Transceiver Module | Portable Medical Sensor Node |
Use Scenario: Supplies 1.8 V to sub-GHz RF transceiver IC in battery-powered IR/RF remotes. IC Role / Device Role / Timing Role: High-efficiency boost stage enabling burst-mode transmission from alkaline primary cells. Use Value: 100 mA capability supports 20 ms transmit pulses; shutdown current <5 µA preserves shelf life up to 5 years. | Use Scenario: Powers low-power MCU and analog front-end in handheld diagnostic tools (e.g., pulse oximeters). IC Role / Device Role / Timing Role: Main power regulator with integrated battery monitoring for user alert and data logging. Use Value: LBI/LBO pins provide direct battery health signaling to MCU - no additional supervisor IC required. |
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; 2.5 A switch; 2.5 MHz switching; requires external feedback for voltage adjustment | Higher output current and frequency - suited for USB-powered accessories, not ultra-low-voltage battery start-up | Select if >250 mA output or faster transient response needed; not suitable for <0.9 V start-up requirement. |
| MAX1703EUT+T | 1.8 V fixed output; 1.2 A switch; 500 kHz; no integrated LBI/LBO; higher 110 µA quiescent current | Lacks battery monitor - requires external comparator for low-battery warning | Choose when LBI/LBO functionality is unnecessary and board space allows larger 6-pin SOT-23 footprint. |
Compared with TPS61001DGSR, TPS61022RGET offers higher performance but cannot start from 0.9 V, while MAX1703EUT+T matches the 1.8 V output and frequency but omits critical battery supervision - making TPS61001DGSR uniquely suited for cost-sensitive, battery-optimized portable designs requiring integrated monitoring and deep-discharge operation.
Availability
TPS61001DGSR is available at Aetrix Electronics and suitable for wireless headsets, MP3 players, remote controls, and portable medical sensors requiring stable component supply across long production lifecycles and varying battery chemistries.
Supply support for TPS61001DGSR 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 designed specifically for ultra-low-voltage, single- and dual-cell portable electronics - prioritizing start-up reliability, integrated protection, and minimal external component count.
FAQ
What is the minimum input voltage required for TPS61001DGSR to start switching into a full load?
The TPS61001DGSR starts switching into a full 33 Ω load at 0.9 V input voltage across the full –40°C to 85°C operating temperature range. Once started, it continues regulating down to 0.8 V input. This capability is verified per SLVS279C datasheet Figure 11 and Section 7 Electrical Characteristics - critical for applications using aging or cold-temperature batteries where voltage sag occurs.
Can the TPS61001DGSR output voltage be adjusted externally using the FB pin?
No. The TPS61001DGSR is a fixed-output 1.8 V variant; its FB pin is not connected internally and must remain unconnected in the application circuit. Only TPS61000 and TPS61007 support adjustable output via FB. Using external resistors on FB with TPS61001DGSR will cause regulation failure or damage due to incorrect biasing.
What is the function of the NC pin (Pin 8) on the TPS61001DGSR MSOP package?
Pin 8 on the TPS61001DGSR is designated NC (No Connect) and is not bonded to any internal circuitry. It must be left unconnected - no trace, no pull-up/down, no voltage applied. In TPS61007, this same pin is repurposed as FBGND, but that functionality does not apply to TPS61001DGSR per the DGS package pinout table in SLVS279C Section 2.
How does the low-battery detection circuit operate on the TPS61001DGSR?
The TPS61001DGSR's LBI pin accepts a scaled battery voltage; when it falls below 500 mV ±15 mV, the open-drain LBO pin pulls low. Detection is active only when EN = high. A typical divider uses 500 kΩ from VBAT to LBI and 500 kΩ from LBI to GND to trigger at 1.0 V battery voltage - as specified in Section 5 of SLVS279C.
Is the TPS61001DGSR RoHS compliant and lead-free?
Yes. The TPS61001DGSR is manufactured in a RoHS-compliant, lead-free process and meets JEDEC J-STD-020 moisture sensitivity level 2a (MSL-2a) requirements. The "R" suffix denotes tape-and-reel packaging (2500 units/reel), consistent with TI's standard green packaging policy effective since 2006.
TPS61001DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- 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):
- 1.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- 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
TPS61001DGSR FAQ
1.How can I place an order for TPS61001DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61001DGSR 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 TPS61001DGSR reliable?
The price and inventory of TPS61001DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61001DGSR is usually 5 days.
3.What payment methods are accepted for TPS61001DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61001DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61001DGSR?
TPS61001DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61001DGSR 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 TPS61001DGSR?
For technical support, including TPS61001DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61001DGSR requirements.
6.How does Aetrix verify that TPS61001DGSR is sourced from the original manufacturer or authorized distributors?
All TPS61001DGSR 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 TPS61001DGSR meets industry standards.
7.What is the process for return or replacement of TPS61001DGSR?
All TPS61001DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61001DGSR, 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 TPS61001DGSR part is unused and in its original packaging.
Return procedure for TPS61001DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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