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Texas Instruments TPS62003DGS
- Part No.:
- TPS62003DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62003DGS.pdf
- Description:
- IC REG BUCK 1.2V 600MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
TPS62003DGS from Texas Instruments is a fixed-output 1.5 V synchronous step-down DC-DC converter with up to 600 mA output current, 2 V to 5.5 V input range, and 95% peak efficiency at 3.6 V input/2.5 V output. It integrates P-channel and N-channel power MOSFETs, supports external clock synchronization up to 1 MHz, and operates in PFM/PWM mode for high light-load efficiency in battery-powered portable electronics.
For engineers reviewing the TPS62003DGS datasheet, TPS62003DGS pinout, TPS62003DGS application, or TPS62003DGS equivalent, key selection criteria include its 1.5 V fixed output, 10-pin VSSOP (DGS) package, programmable current limit (600 mA or 1.2 A), power-good indicator, and low-noise antiringing switch operation in fixed-voltage variants.
Technical Context
The TPS62003DGS implements a current-mode synchronous buck topology with internal compensation, enabling stable regulation using only an external inductor and capacitors. Its control logic dynamically switches between PWM (fixed 750 kHz) and PFM (variable frequency) modes based on load-maintaining >90% efficiency from 10 mA to full 600 mA load.
It features dual current-limit configuration via ILIM pin (GND = 600 mA typ, VIN = 1.2 A typ), 100% duty-cycle dropout operation, soft-start (1 ms typical), and undervoltage lockout (1.6 V typ). The PG open-drain output asserts after 100 μs delay when VOUT exceeds 92% of nominal 1.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±3% over 10 mA–600 mA load and 2.5 V–5.5 V input |
| 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 systems |
| Max Output Current | 600 mA (ILIM = GND) or 1.2 A (ILIM = VIN) - sets safe inductor and PCB trace sizing |
| Switching Frequency | 750 kHz typical (internal) or 500–1000 kHz (externally synchronized) - enables compact 10 μH inductor use |
| Quiescent Current | 50 μA typical in PFM mode - extends battery life in standby/sleep states |
| Efficiency | 95% peak at 3.6 VIN/2.5 VOUT/200 mA - reduces thermal load in space-constrained layouts |
| Power Good Threshold | 92% of 1.5 V (1.38 V) with 2.5% hysteresis - provides reliable system reset signaling |
Pinout & Package
The TPS62003DGS is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm, optimized for high-density portable PCBs with exposed thermal pad (PGND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main power input | Accepts 2–5.5 V; requires 10 μF ceramic bypass capacitor at FC pin |
| FC (Pin 2) | High-frequency input bypass | Connects 0.1 μF capacitor close to IC for noise suppression and stability |
| GND (Pin 3) | Analog ground reference | Separate from PGND; ties to system analog ground plane |
| PG (Pin 4) | Open-drain power-good output | Asserts high when VOUT ≥1.38 V; requires external pull-up to VOUT |
| FB (Pin 5) | Feedback input | Internally connected to 1.5 V divider - no external resistors needed |
| ILIM (Pin 6) | Current limit select | GND = 600 mA limit; VIN = 1.2 A limit - configures MOSFET stress and thermal design |
| SYNC (Pin 7) | External clock sync input | CMOS-level signal; Low = PFM mode, High = forced PWM mode |
| EN (Pin 8) | Enable control | Logic high enables regulator; low disables with <1 μA shutdown current |
| L (Pin 9) | Switch node | Drives external 10 μH inductor; high dv/dt node requiring tight layout |
| PGND (Pin 10) | Power ground return | Low-impedance path for inductor and MOSFET return - must connect to thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P- and N-channel MOSFETs eliminate external diode, reducing conduction loss and board area |
| Antiringing switch | Active in fixed-output versions (including TPS62003DGS) to suppress parasitic LC ringing and EMI in DCM |
| Programmable current limit | Two selectable limits (600 mA / 1.2 A) via single ILIM pin connection - simplifies BOM and design reuse |
| 100% duty-cycle operation | Maintains regulation down to VIN – VDS(on) ≈ VOUT, critical for Li-ion end-of-discharge support |
| Internal soft-start | 1 ms typical ramp prevents inrush current and output overshoot during power-up |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor core voltage (1.5 V) from single Li-ion cell (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary step-down regulator delivering regulated 1.5 V at up to 600 mA with dynamic load response. Use Value: 95% peak efficiency extends talk time; PFM mode maintains >85% efficiency at 10 mA standby current. | Use Scenario: Supplying image sensor I/O and ISP core rails in compact digital still cameras. IC Role / Device Role / Timing Role: Fixed 1.5 V supply with fast transient response to burst-mode sensor readout loads. Use Value: Antiringing switch minimizes EMI that could corrupt image data lines; small 3×3 mm VSSOP eases camera module integration. |
| USB-Based DSL Modems | Handheld PCs / PDAs |
Use Scenario: Generating 1.5 V for USB PHY and Ethernet MAC logic from 5 V USB bus input. IC Role / Device Role / Timing Role: Input-supplied buck converter operating in forced PWM mode (SYNC = HIGH) for clean spectral profile. Use Value: Synchronization to system clock eliminates beat frequencies; 750 kHz switching allows small passive filtering. | Use Scenario: Powering ARM-based application processor I/O domain in legacy handheld PCs. IC Role / Device Role / Timing Role: Main 1.5 V rail with enable control tied to system power manager for dynamic sleep/wake sequencing. Use Value: 50 μA quiescent current and <1 μA shutdown current maximize battery runtime in suspend states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62004DGS | Fixed 1.8 V output; identical pinout, package, and feature set | Requires redesign of downstream logic voltage tolerance and level-shifting | Select when system requires 1.8 V I/O rail instead of 1.5 V; no layout change needed |
| TPS62056DGS | Higher 1.2 A continuous output, 2.7–6 V input, 2.5 MHz switching, smaller 8-pin VSSOP | Enables higher-current loads but requires new inductor/capacitor selection and layout revision | Choose for next-gen designs needing greater current headroom and faster transient response |
Compared with TPS62004DGS, the TPS62003DGS delivers lower output voltage for legacy 1.5 V logic domains; compared with TPS62056DGS, it offers proven reliability in cost-sensitive, moderate-current portable applications with simpler external component requirements.
Availability
TPS62003DGS is available at Aetrix Electronics and suitable for cellular phones, digital cameras, USB-based DSL modems, and handheld PCs requiring stable component supply across long-lifecycle consumer electronics programs.
Supply support for TPS62003DGS 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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS6200x product line was engineered specifically for ultra-low-power, high-efficiency DC-DC conversion in space-constrained portable devices powered by single- or multi-cell batteries.
FAQ
What is the output voltage accuracy of the TPS62003DGS over temperature and load?
The TPS62003DGS delivers 1.5 V output with ±3% tolerance across full operating conditions: –40°C to 85°C ambient temperature, 10 mA to 600 mA load, and 2.5 V to 5.5 V input voltage. This specification is guaranteed per TI's SLVS294F datasheet Section 7.5, where output voltage error is measured under defined test conditions including line and load regulation effects.
Does the TPS62003DGS require external feedback resistors to set its output voltage?
No, the TPS62003DGS does not require external feedback resistors. As a fixed-output variant in the TPS6200x family, it uses an internal resistor divider to regulate precisely to 1.5 V. The FB pin is internally connected and must not be externally biased - unlike the adjustable TPS62000DGS which requires external R1/R2.
How does the ILIM pin configure current limiting on the TPS62003DGS?
The ILIM pin on the TPS62003DGS selects between two factory-trimmed current limits: connecting ILIM to GND sets the switch current limit to 600 mA (typical), while connecting ILIM to VIN raises it to 1.2 A (typical). This configuration directly determines maximum inductor saturation current and thermal design margin without changing the IC itself.
Can the TPS62003DGS operate with input voltage below 2 V?
No, the TPS62003DGS has a minimum recommended input voltage of 2 V per Section 7.3 of the datasheet. Although the device may function briefly below this threshold, undervoltage lockout activates below ~1.6 V (typical), disabling regulation. Operation below 2 V risks instability, reduced efficiency, and unguaranteed output accuracy - especially near dropout.
What is the purpose of the FC pin on the TPS62003DGS, and how should it be decoupled?
FC (Filter Capacitor) is a dedicated high-frequency input bypass pin on the TPS62003DGS. It must be decoupled with a 0.1 μF ceramic capacitor placed as close as possible to the pin and to the VIN supply. This capacitor stabilizes the internal bias circuitry, suppresses high-frequency noise injection, and ensures robust start-up and light-load PFM operation - distinct from the main 10 μF CIN on VIN.
TPS62003DGS 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-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):
- 1.2V
- 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
TPS62003DGS FAQ
1.How can I place an order for TPS62003DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62003DGS 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 TPS62003DGS reliable?
The price and inventory of TPS62003DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62003DGS is usually 5 days.
3.What payment methods are accepted for TPS62003DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62003DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62003DGS?
TPS62003DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62003DGS 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 TPS62003DGS?
For technical support, including TPS62003DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62003DGS requirements.
6.How does Aetrix verify that TPS62003DGS is sourced from the original manufacturer or authorized distributors?
All TPS62003DGS 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 TPS62003DGS meets industry standards.
7.What is the process for return or replacement of TPS62003DGS?
All TPS62003DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS62003DGS, 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 TPS62003DGS part is unused and in its original packaging.
Return procedure for TPS62003DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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