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Texas Instruments TPS62001DGSR
- Part No.:
- TPS62001DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62001DGSR.pdf
- Description:
- IC REG BUCK 0.9V 600MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,761
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Product details
Overview
TPS62001DGSR from Texas Instruments is a synchronous step-down DC-DC converter optimized for low-power portable systems, delivering up to 600 mA output current with >95% efficiency at 3.6 V input and 2.5 V output. It operates from 2 V to 5.5 V input, provides fixed 1 V output, and features pin-programmable current limit (600 mA or 1.2 A) and external clock synchronization up to 1 MHz. Used in cellular phones and handheld PCs for core voltage regulation.
For engineers reviewing the TPS62001DGSR datasheet, TPS62001DGSR pinout, TPS62001DGSR application, or TPS62001DGSR equivalent, key selection criteria include its 10-pin VSSOP package, PFM/PWM hybrid control mode, 50 μA quiescent current in power-save mode, 750 kHz typical switching frequency, and support for 100% duty-cycle operation during low-dropout conditions.
Technical Context
The TPS62001DGSR implements current-mode control with integrated P-channel high-side and N-channel low-side MOSFETs, enabling synchronous rectification and eliminating the need for an external diode. Its internal compensation and soft-start circuitry reduce external component count while preventing output overshoot during startup.
It supports three functional modes via the SYNC pin: forced PWM (SYNC = VIN), power-save PFM/PWM auto-switching (SYNC = GND), and external clock synchronization (500–1000 kHz). The ILIM pin selects between 600 mA (ILIM = GND) and 1.2 A (ILIM = VIN) switch current limits, directly impacting inductor sizing and thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and 2–3-cell alkaline/NiMH battery inputs without pre-regulation. |
| Output Voltage | Fixed 1 V - factory-trimmed reference ensures ±3% accuracy over load and temperature, suitable for low-voltage logic cores. |
| Max Output Current | 600 mA - achievable with ILIM tied to GND; enables compact 10 μH inductor and ceramic output capacitor designs. |
| Quiescent Current | 50 μA (typ) - measured in PFM mode at zero load, critical for extending battery life in standby/sleep states. |
| Switching Frequency | 750 kHz (typ) - allows use of small 10 μH inductors and low-ESR ceramic capacitors, reducing board area and cost. |
| Efficiency | 95% - achieved at 3.6 V input, 2.5 V output, 200 mA load; maintains >85% efficiency down to 1 mA in PFM mode. |
| Shutdown Current | 0.1 μA (typ) - enables ultra-low leakage during system sleep, preserving battery charge over extended idle periods. |
Pinout & Package
TPS62001DGSR is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm with 0.5 mm pitch, optimized for space-constrained portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2–5.5 V supply; requires 10 μF input capacitor close to pin for stable operation and EMI suppression. |
| FC (Pin 2) | Supply bypass | High-frequency decoupling node; must connect 0.1 μF ceramic capacitor directly to ground for oscillator stability. |
| GND (Pin 3) | Analog ground | Reference for feedback and control circuits; separate from PGND to minimize noise coupling into error amplifier. |
| PG (Pin 4) | Power-good open-drain output | Signals valid output after 100 μs delay and when VOUT ≥92% of nominal; requires external pull-up to VOUT. |
| FB (Pin 5) | Feedback input | Internally connected to 1 V divider; unused in fixed-output version - leave unconnected per datasheet guidance. |
| ILIM (Pin 6) | Current limit select | Tie to GND for 600 mA limit (default for TPS62001); tie to VIN for 1.2 A limit - sets peak inductor current threshold. |
| SYNC (Pin 7) | Mode control | GND = PFM/PWM auto-switching; VIN = forced PWM; external CMOS clock = synchronization (500–1000 kHz). |
| EN (Pin 8) | Enable input | Active-high logic; <0.4 V disables device, reducing IQ to <1 μA; hysteresis prevents chatter near threshold. |
| L (Pin 9) | Switch node | Connects to inductor; carries high dv/dt switching waveform - requires tight layout and minimal trace length. |
| PGND (Pin 10) | Power ground | Return path for high-current switch node and inductor; must be routed separately from analog ground and joined at single point. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P- and N-channel MOSFETs eliminate external Schottky diode, reducing conduction loss and improving efficiency by ~10% vs. asynchronous designs. |
| PFM/PWM hybrid control | Automatically transitions from fixed-frequency PWM (moderate/heavy load) to variable-frequency PFM (light load), sustaining >85% efficiency down to 1 mA output. |
| 100% duty-cycle operation | Enables dropout as low as RDS(on) × IOUT (≤200 mΩ × 600 mA ≈ 120 mV), supporting operation with input only slightly above output voltage. |
| Internal soft-start | 1 ms typical ramp time prevents inrush current and output overshoot during enable, eliminating need for external RC timing network. |
| Antiringing switch (fixed versions only) | Active in TPS62001 - suppresses parasitic LC oscillation at switch node during DCM, reducing radiated EMI without external snubber. |
Applications
| Cellular Phone Baseband Power | Handheld PC Core Voltage |
|---|---|
Use Scenario: Regulating 1 V core supply for ARM9/ARM11 application processors in GSM/WCDMA handsets with Li-ion battery input (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 1 V at up to 600 mA with dynamic load transient response <10 μs. Use Value: 95% peak efficiency extends talk time; 50 μA quiescent current preserves standby battery life; PFM mode eliminates audible coil whine during idle. |
Use Scenario: Powering 1 V I/O and memory interfaces in Windows CE-based PDAs powered by dual NiMH cells (2.4–3.0 V). IC Role / Device Role / Timing Role: Fixed-output DC-DC converter with integrated soft-start and power-good signaling for sequenced power-up. Use Value: 100% duty-cycle capability maintains regulation down to 1.1 V input; SYNC pin enables noise-sensitive audio subsystems to force PWM mode. |
| USB DSL Modem Interface | MP3 Player DSP Supply |
Use Scenario: Generating clean 1 V rail for USB PHY and Ethernet MAC controllers in compact DSL modems powered from 5 V USB bus. IC Role / Device Role / Timing Role: Efficient intermediate regulator stepping 5 V USB down to 1 V, rejecting ripple from upstream switching supplies. Use Value: Antiringing switch minimizes conducted EMI on USB lines; PG signal enables host controller to verify power integrity before enumeration. |
Use Scenario: Supplying 1 V core voltage to low-power audio DSPs in battery-operated MP3 players using single alkaline cell (1.5 V fresh, 0.9 V end-of-life). IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter maintaining regulation across full battery discharge curve with automatic PFM entry. Use Value: 2 V minimum input allows operation until battery reaches 0.9 V under load; shutdown current <1 μA prevents battery drain during storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62000DGSR | Adjustable output (0.8–VIN) via external resistor divider; lacks internal 1 V reference; FB pin active. | Used where multiple output voltages are needed on same board or future voltage scaling is required. | Select TPS62000DGSR only if adjustable output is mandatory; TPS62001DGSR offers tighter tolerance and simpler BOM for fixed 1 V. |
| TPS62290DRVR | Higher 2.5 A output, 2.5–6.5 V input, 2.2 MHz switching, smaller 6-pin WSON package; no SYNC or ILIM pins. | Targets higher-current applications like FPGA I/O banks or multi-core SoCs requiring faster transient response. | TPS62290DRVR is not drop-in compatible - different pinout, no ILIM/SYNC, and incompatible thermal profile; choose only for >600 mA loads. |
Compared with TPS62001DGSR, TPS62000DGSR provides design flexibility at the cost of added resistors and reduced accuracy, while TPS62290DRVR delivers higher current and frequency but sacrifices programmability and low-IQ operation essential for battery longevity.
Availability
TPS62001DGSR is available at Aetrix Electronics and suitable for cellular phones, handheld PCs, and USB-based DSL modems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62001DGSR 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 IC design and manufacturing.
The TPS6200x product line was engineered specifically for ultra-low-power portable electronics, emphasizing high efficiency across wide load ranges, minimal external components, and robust operation under battery-voltage droop conditions.
FAQ
What is the maximum output current capability of the TPS62001DGSR?
The TPS62001DGSR delivers up to 600 mA continuous output current when the ILIM pin is connected to GND, as specified in the recommended operating conditions. This rating assumes proper thermal management, 10 μH inductor, and 10 μF output capacitance. At light loads, the device enters PFM mode to maintain efficiency, but the 600 mA limit remains enforced by the internal current-sense circuitry. Exceeding this current may trigger foldback protection or cause thermal shutdown.
Does the TPS62001DGSR require external feedback resistors?
No, the TPS62001DGSR does not require external feedback resistors because it is a fixed-output variant with an internally trimmed 1 V reference. The FB pin is internally connected to the reference divider and must be left unconnected in standard operation. External resistors are only required for the adjustable TPS62000DGSR variant. Adding resistors to TPS62001DGSR would disrupt regulation and is not supported.
How does the SYNC pin affect efficiency and noise performance of the TPS62001DGSR?
When SYNC is tied to GND, the TPS62001DGSR operates in PFM/PWM auto-switching mode, maximizing efficiency at light loads (≥85% at 1 mA) but introducing variable switching frequency that may cause audible noise. When SYNC is tied to VIN, it forces fixed-frequency PWM operation (750 kHz), simplifying EMI filtering and eliminating coil whine, though efficiency drops to ~75% at 1 mA. External clock synchronization (500–1000 kHz) retains PWM benefits while aligning switching to system clocks.
What is the purpose of the FC pin on the TPS62001DGSR?
The FC (Filter Capacitor) pin on the TPS62001DGSR serves as a dedicated high-frequency bypass node for the internal bias supply and oscillator circuitry. It must be connected to a 0.1 μF ceramic capacitor placed as close as possible to the pin and to PGND. This capacitor stabilizes the internal reference and clock generation, preventing jitter and startup failures. Unlike VIN or PGND, FC is not a power rail - connecting it to any voltage source other than the specified capacitor violates absolute maximum ratings.
Can the TPS62001DGSR operate with input voltage below 2 V?
No, the TPS62001DGSR has a specified minimum input voltage of 2 V per the recommended operating conditions, and its undervoltage lockout (UVLO) activates below approximately 1.6 V. Operation below 2 V risks failure to regulate, erratic PFM/PWM transitions, or complete shutdown. While the device may briefly function at 1.9 V under light load, TI does not guarantee performance or reliability outside the 2–5.5 V range. For sub-2 V battery applications, consider the TPS62040 or similar ultra-low-VIN converters.
TPS62001DGSR 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:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 750kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS62001DGSR FAQ
1.How can I place an order for TPS62001DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62001DGSR 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 TPS62001DGSR reliable?
The price and inventory of TPS62001DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62001DGSR is usually 5 days.
3.What payment methods are accepted for TPS62001DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62001DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62001DGSR?
TPS62001DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62001DGSR 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 TPS62001DGSR?
For technical support, including TPS62001DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62001DGSR requirements.
6.How does Aetrix verify that TPS62001DGSR is sourced from the original manufacturer or authorized distributors?
All TPS62001DGSR 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 TPS62001DGSR meets industry standards.
7.What is the process for return or replacement of TPS62001DGSR?
All TPS62001DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62001DGSR, 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 TPS62001DGSR part is unused and in its original packaging.
Return procedure for TPS62001DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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