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Texas Instruments TPS62008DGS
- Part No.:
- TPS62008DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62008DGS.pdf
- Description:
- IC REG BUCK 1.9V 600MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,224
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Product details
Overview
TPS62008DGS from Texas Instruments is a fixed-output, synchronous step-down DC-DC converter delivering 2.5 V at up to 600 mA from a 2–5.5 V input, featuring 95% peak efficiency, 50 µA quiescent current in power-save mode, and internal PFM/PWM control logic for wide-load-efficiency optimization - deployed in battery-powered portable audio players and USB DSL modems.
For engineers reviewing the TPS62008DGS datasheet, TPS62008DGS pinout, TPS62008DGS application, or TPS62008DGS equivalent, key selection criteria include its fixed 2.5 V output, 750 kHz nominal switching frequency, ILIM-selectable 600/1200 mA current limit, SYNC-controlled PFM/PWM mode transition, and VSSOP-10 (DGS) thermal performance with RθJA = 160°C/W.
Technical Context
The TPS62008DGS implements current-mode control with integrated P-channel high-side and N-channel low-side MOSFETs, enabling synchronous rectification and 100% duty-cycle operation near dropout. Its internal compensation eliminates external compensation components.
It supports three functional modes via the SYNC pin: forced PWM (SYNC = VIN), power-save PFM/PWM (SYNC = GND), or external clock synchronization (500–1000 kHz). The antiringing switch reduces EMI in DCM but is disabled in fixed-output variants per datasheet Note 8.3.1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±3% over 10 mA–600 mA load; enables direct replacement of LDOs in 2.5 V rail applications. |
| Input Voltage Range | 2 V to 5.5 V; supports single-cell Li-ion (2.7–4.2 V), 2–3 cell alkaline/NiMH, and USB 5 V sources. |
| Max Output Current | 600 mA (ILIM = GND) or 1200 mA (ILIM = VIN); selectable via single resistor tie-off, no external sense resistor needed. |
| Quiescent Current | 50 µA typical in PFM mode; sustains >100-hour runtime in always-on sub-100 µA standby systems. |
| Switching Frequency | 750 kHz nominal (free-running); synchronizable to 500–1000 kHz external clock for EMI reduction or system timing alignment. |
| Power Good Threshold | Active high when VOUT ≥92% of nominal (2.3 V); open-drain PG output requires external pull-up for host processor reset sequencing. |
| Thermal Resistance | RθJA = 160°C/W (VSSOP-10); limits continuous 600 mA operation to ≤65°C ambient without heatsinking. |
Pinout & Package
TPS62008DGS is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm with 0.5 mm pitch, optimized for compact portable PCB layouts and moderate thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main power input | Accepts 2–5.5 V; requires 10 µF ceramic input capacitor placed adjacent to FC and GND pins. |
| FC (Pin 2) | High-frequency bypass | Connects to 0.1 µF ceramic capacitor for noise suppression on VIN path; not for external bias. |
| GND (Pin 3) | Analog ground reference | Low-noise return for FB, EN, SYNC; must be separated from PGND in layout to avoid coupling. |
| PG (Pin 4) | Open-drain power-good flag | Asserts high after 100 µs delay when VOUT ≥2.3 V; requires external pull-up to VOUT or system rail. |
| FB (Pin 5) | Feedback reference node | Internally connected to 0.45 V reference; unused in fixed-output TPS62008DGS (no external divider). |
| ILIM (Pin 6) | Current-limit configuration | Tie to GND for 600 mA limit or to VIN for 1200 mA limit; sets peak switch current without external sensing. |
| SYNC (Pin 7) | Mode control and sync input | GND = PFM/PWM auto-switching; VIN = forced PWM; CMOS clock = external sync (500–1000 kHz). |
| EN (Pin 8) | Enable control | Logic high (>1.3 V) enables regulation; logic low (<0.4 V) shuts down device to <1 µA IQ. |
| L (Pin 9) | Switch node | Drives external 10 µH inductor; high di/dt node requiring short, wide trace and local PGND return. |
| PGND (Pin 10) | Power ground return | High-current return for L, internal MOSFETs; must connect directly to inductor and output capacitor ground. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous MOSFETs | Eliminates external catch diode; reduces conduction loss and improves efficiency by ~8% vs. asynchronous designs. |
| Programmable current limit | Two discrete settings (600/1200 mA) via ILIM pin tie-off - avoids overdesign of inductor and capacitors for target load. |
| Internal soft-start | ~1 ms ramp time prevents output overshoot and inrush current spikes during enable; no external capacitor required. |
| Undervoltage lockout (UVLO) | Activates below ~1.6 V VIN; prevents erratic startup and brownout operation in fading battery conditions. |
| 100% duty-cycle mode | Maintains regulation down to VIN – VDS(on) ≈ VOUT; extends usable battery life in deep discharge scenarios. |
Applications
| Cellular Phones | USB-Based DSL Modems |
|---|---|
Use Scenario: Powering baseband processor core voltage rail during burst data transmission. IC Role / Device Role / Timing Role: Primary 2.5 V step-down regulator supplying CPU core with dynamic load response up to 600 mA. Use Value: 95% efficiency at 300 mA preserves battery runtime; PFM mode maintains <50 µA quiescent draw during idle. |
Use Scenario: Generating stable 2.5 V supply for USB PHY and Ethernet MAC interface ICs. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter synchronized to USB frame clock via SYNC pin. Use Value: External clock sync eliminates beat frequencies with USB 12 MHz timing; reduces conducted EMI in certified designs. |
| MP3 Portable Audio Players | Digital Cameras |
Use Scenario: Supplying DSP and audio codec from single Li-ion cell with variable load (playback vs. record). IC Role / Device Role / Timing Role: High-efficiency buck converter operating across 2.7–4.2 V input range with seamless PFM→PWM transition. Use Value: 50 µA quiescent current extends playback time in pause mode; antiringing switch suppresses audible coil whine. |
Use Scenario: Powering image sensor and ISP core logic during high-current autofocus and flash charging cycles. IC Role / Device Role / Timing Role: Fast-transient 2.5 V regulator supporting 100 mA–600 mA dynamic loads with <2 ms start-up time. Use Value: 0.4–2 ms start-up ensures immediate sensor readiness; 100% duty cycle sustains output as battery drops to 2.5 V. |
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 |
|---|---|---|---|
| TPS62007DGS | Fixed 3.3 V output; identical pinout, package, and feature set except output voltage and feedback network. | Used where system requires 3.3 V logic rail instead of 2.5 V; shares same layout and BOM except output cap and inductor rating. | Select TPS62007DGS only when 3.3 V is required; no electrical compatibility with 2.5 V systems. |
| TPS62290DGS | Successor generation: 2.5 V fixed, 1 A output, 2.3–6.5 V input, 17 µA IQ, 2.2 MHz switching, same DGS package. | Enables smaller magnetics and higher efficiency in new designs; not drop-in due to different UVLO, sync range, and thermal specs. | Choose TPS62290DGS for next-gen designs prioritizing size and light-load efficiency; legacy TPS62008DGS remains valid for cost-sensitive volume production. |
Compared with TPS62007DGS and TPS62290DGS, the TPS62008DGS offers proven reliability in battery-constrained 2.5 V applications with minimal external components, while trading higher IQ and lower max current for mature supply chain stability and design simplicity.
Availability
TPS62008DGS is available at Aetrix Electronics and suitable for cellular phones, USB-based DSL modems, MP3 portable audio players, and digital cameras requiring stable component supply across extended production lifecycles.
Supply support for TPS62008DGS 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and consumer markets.
The TPS6200x product line was designed specifically for ultra-low-power, high-efficiency DC-DC conversion in space-constrained portable electronics powered by single- or multi-cell batteries.
FAQ
What is the output voltage tolerance of the TPS62008DGS under full load?
The TPS62008DGS delivers a fixed 2.5 V output with ±3% tolerance across 10 mA to 600 mA load current, measured at TA = –40°C to 85°C and VIN = 2.7 V to 5.5 V. This specification holds regardless of SYNC pin state or ILIM configuration, ensuring consistent rail accuracy for 2.5 V logic interfaces without external trimming.
Can the TPS62008DGS operate with an input voltage below 2 V?
No - the TPS62008DGS has a minimum recommended input voltage of 2 V per datasheet Section 7.3. Operation below this violates recommended conditions and may cause UVLO activation or unstable regulation. Absolute maximum ratings permit –0.3 V, but functional operation is not guaranteed below 2 V.
How does the ILIM pin affect current limiting in the TPS62008DGS?
The ILIM pin selects between two factory-trimmed current limits: tying ILIM to GND sets the switch current limit to 600 mA (typical), while tying it to VIN raises it to 1200 mA (typical). This setting directly determines maximum sustainable output current and influences inductor saturation margin - no external sense resistor or calibration is required.
Is the TPS62008DGS pin-compatible with other devices in the TPS6200x family?
Yes - all TPS6200x devices, including TPS62008DGS, share identical 10-pin VSSOP (DGS) packaging, pinout, and footprint. Fixed-output variants (TPS62001–TPS62007) and the adjustable TPS62000 use the same layout, enabling one PCB design to support multiple output voltages via BOM change only.
Does the TPS62008DGS require external compensation components?
No - the TPS62008DGS features fully internal compensation. Its current-mode architecture and fixed-gain error amplifier eliminate the need for external RC networks or feedforward capacitors, reducing BOM count and layout sensitivity while maintaining stability with standard 10 µH inductors and ceramic output capacitors.
TPS62008DGS 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):
- 1.9V
- 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
TPS62008DGS FAQ
1.How can I place an order for TPS62008DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62008DGS 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 TPS62008DGS reliable?
The price and inventory of TPS62008DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62008DGS is usually 5 days.
3.What payment methods are accepted for TPS62008DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62008DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62008DGS?
TPS62008DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62008DGS 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 TPS62008DGS?
For technical support, including TPS62008DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62008DGS requirements.
6.How does Aetrix verify that TPS62008DGS is sourced from the original manufacturer or authorized distributors?
All TPS62008DGS 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 TPS62008DGS meets industry standards.
7.What is the process for return or replacement of TPS62008DGS?
All TPS62008DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS62008DGS, 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 TPS62008DGS part is unused and in its original packaging.
Return procedure for TPS62008DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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