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Texas Instruments TPS62260DDCR
- Part No.:
- TPS62260DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62260DDCR.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,868
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Product details
Overview
TPS62260DDCR from Texas Instruments is a synchronous step-down DC/DC converter optimized for battery-powered portable electronics. It delivers up to 600 mA output current from 2 V to 6 V input, operates at 2.25 MHz fixed switching frequency, supports power save mode (PFM) at light loads, and features adjustable output voltage via external feedback resistors. It is used in mobile phones and point-of-load applications requiring compact, high-efficiency regulation.
For engineers reviewing the TPS62260DDCR datasheet, TPS62260DDCR pinout, TPS62260DDCR application, or TPS62260DDCR equivalent, key selection criteria include its 2.25-MHz operation, 15-μA quiescent current in PFM mode, 100% duty cycle capability for low dropout, ±1.5% output voltage accuracy in PWM mode, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TPS62260DDCR employs voltage-mode control with input voltage feed-forward for fast line/load regulation and stable operation with small ceramic capacitors. Its internal architecture integrates high-side and low-side MOSFETs with typical RDS(on) of 480 mΩ and 380 mΩ, respectively, and includes dynamic voltage positioning (+1% in PFM mode) to minimize load-step transients.
It supports three functional modes: forced PWM (via MODE pin high), automatic PFM/PWM transition (MODE = GND), and shutdown (EN = GND). Undervoltage lockout triggers at 1.85 V (falling), thermal shutdown activates at 140°C, and soft-start ramps output in 250 μs with controlled inrush current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V to 6 V - supports single-cell Li-ion, two/three-cell alkaline, and 3.3-V/5-V rails without external regulators. |
| Max Output Current | 600 mA - sustained delivery across full VIN range above 2.5 V; reduced to 300 mA at 2.3–2.5 V and 150 mA below 2.3 V. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of tiny 2.2-μH inductors and 10-μF ceramic output capacitors for <1-mm solution height. |
| Quiescent Current | 15 μA (PFM, no switching) - extends battery life in standby; rises to 3.8 mA in forced PWM mode at no load. |
| Output Voltage Accuracy | ±1.5% in PWM mode - ensures tight regulation for sensitive core/logic supplies; reference voltage is 600 mV. |
| Shutdown Current | 0.1–1 μA - minimizes battery drain during system sleep; enabled by pulling EN low. |
| Thermal Shutdown | 140°C (typical) with 20°C hysteresis - protects IC under overload or poor PCB thermal design; resumes operation after cooldown. |
Pinout & Package
TPS62260DDCR uses the SOT-23-5 (DDC) package: 2.90 mm × 1.60 mm, 5-pin surface-mount, lead-free, RoHS-compliant. Thermal pad is not present - thermal performance relies on PCB copper area connected to GND pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies internal circuitry and high-side switch; requires 4.7-μF ceramic input capacitor close to pin. |
| GND | Ground reference | Common return path for power and control circuits; must be low-impedance connection to PCB ground plane. |
| EN | Enable control | Active-high logic input; pull high ≥1 V to enable, pull low ≤0.4 V to enter shutdown (<1-μA IQ). |
| FB | Feedback input | Connects to resistor divider from VOUT; sets output voltage as VOUT = 0.6 V × (1 + R1/R2); no internal divider. |
| SW | Switch node | Drives external inductor; carries high di/dt pulses - requires short, wide trace and ground guard ring to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains +1% output offset in PFM mode to reduce undershoot/overshoot during load transients - improves stability without external compensation. |
| 100% Duty Cycle Operation | Enables dropout as low as IOUT × (RDS(on) + RL) - extends usable battery voltage down to ~0.6 V above VOUT, maximizing runtime. |
| Fast Soft-Start | Ramps VOUT from 5% to 95% in 250 μs - limits inrush current into output capacitance and prevents input rail collapse on weak sources. |
| Integrated Power Switches | High-side (480 mΩ max) and low-side (380 mΩ max) MOSFETs eliminate external FETs - reduces BOM count and layout complexity. |
| Short-Circuit Protection | Current-limit comparators monitor both switches (ILIMF = 0.8–1.2 A) - prevents damage during output faults without latch-off. |
Applications
| Mobile Phone Core Supply | Portable Media Player DSP Rail |
|---|---|
Use Scenario: Powers application processor core in smartphone during active and idle states with dynamic voltage scaling. IC Role / Device Role / Timing Role: Primary step-down regulator delivering adjustable 0.6–VIN output; manages transitions between PWM and PFM based on CPU load. Use Value: 15-μA quiescent current in PFM mode extends standby time; 2.25-MHz switching allows ultra-compact 2.2-μH/10-μF filter. | Use Scenario: Supplies low-noise 1.2-V rail to audio DSP in handheld media player with variable playback workload. IC Role / Device Role / Timing Role: Point-of-load converter with MODE pin tied to GND for automatic efficiency optimization across playback, pause, and standby. Use Value: Dynamic voltage positioning (+1%) suppresses 100-mV undershoot during sudden codec wake-up; ±1.5% accuracy maintains signal integrity. |
| Wireless Sensor Node MCU | Industrial Handheld Terminal LCD Bias |
Use Scenario: Regulates 3.3-V supply for ARM Cortex-M microcontroller in battery-operated IoT sensor node with periodic wake-ups. IC Role / Device Role / Timing Role: Always-on buck converter enabling rapid wake-from-sleep response; EN pin synchronized to MCU GPIO for precise power sequencing. Use Value: 500-μs startup time ensures MCU receives stable VDD before executing boot code; shutdown current <1 μA preserves multi-year battery life. | Use Scenario: Generates adjustable bias voltage (e.g., 5 V) for LCD contrast control in rugged handheld terminal powered by 3.7-V Li-ion. IC Role / Device Role / Timing Role: Adjustable-output POL regulator; FB network scaled for precise VOUT setting; SW pin routed away from display data lines to avoid coupling. Use Value: 100% duty cycle operation sustains output down to VIN = 5.2 V - fully utilizes battery from 4.2 V to 3.0 V without brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62261DDCR | Fixed 1.8-V output; no MODE pin; auto PFM/PWM only | Eliminates FB resistor network but lacks adjustability - suitable for fixed-rail systems | Select when output voltage is static and board space must be minimized by removing R1/R2. |
| TPS62231DRVR | 2.25-MHz, 600-mA, 2-mm × 2-mm WSON-6; includes MODE pin and same electrical specs | Same functionality with smaller footprint and exposed thermal pad - better thermal performance at high load | Choose for thermally constrained designs or when PCB real estate is premium and WSON reflow is supported. |
Compared with TPS62260DDCR, TPS62261DDCR removes design flexibility for fixed-voltage use cases, while TPS62231DRVR offers identical performance in a thermally superior 2×2-mm package - both require layout revision but no schematic change beyond feedback or pinout adaptation.
Availability
TPS62260DDCR is available at Aetrix Electronics and suitable for mobile phone power management, portable media player DSP supplies, and industrial handheld terminal bias generation requiring stable component supply across long production cycles.
Supply support for TPS62260DDCR 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, designing and manufacturing analog and embedded processing chips for industrial, automotive, and consumer markets.
The TPS6226x product line was developed specifically for high-efficiency, space-constrained battery-powered devices - emphasizing ultra-low quiescent current, small passive component requirements, and seamless light-to-heavy load efficiency transitions.
FAQ
What is the minimum input voltage required for TPS62260DDCR to maintain regulation at 600 mA output?
The minimum input voltage depends on output voltage, load current, and component losses. For example, at VOUT = 1.8 V and IOUT = 600 mA, VINmin ≈ 1.8 V + 0.6 A × (0.48 Ω + 0.11 Ω) = 2.154 V. This assumes worst-case RDS(on) and inductor DCR; actual margin varies with temperature and part tolerances. The TPS62260DDCR enters 100% duty cycle mode below this threshold to sustain output until VIN drops below UVLO (1.85 V).
Can TPS62260DDCR operate without the MODE pin connected?
Yes - the TPS62260DDCR functions correctly with MODE pin left unconnected or tied to GND. In that configuration, it defaults to automatic PFM/PWM mode transition. Leaving MODE floating is not recommended due to noise susceptibility; TI specifies MODE = GND for standard operation. The TPS62260DDCR does not require MODE to be pulled high unless fixed-frequency PWM is needed for EMI filtering.
What is the recommended output capacitor for TPS62260DDCR in a 1.2-V, 600-mA application?
Texas Instruments recommends a 10-μF, X5R/X7R ceramic capacitor rated ≥6.3 V, placed as close as possible to the SW and GND pins. A 10-μF Murata GRM188R60J106M is validated in the datasheet. Larger values (e.g., 22 μF) reduce output ripple further but offer diminishing returns; Y5V/Z5U dielectrics are prohibited due to capacitance loss under DC bias and temperature.
Does TPS62260DDCR support forced PWM mode, and how is it enabled?
Yes - TPS62260DDCR supports forced PWM mode by pulling the MODE pin to VIN (or ≥2 V). This disables automatic PFM entry and maintains 2.25-MHz switching regardless of load current. Doing so increases light-load quiescent current to ~3.8 mA but eliminates PFM frequency variation, simplifying EMI filtering in noise-sensitive analog sections. The TPS62260DDCR's MODE pin is only present in the WSON-6 variant (DRV), not in the SOT-23-5 (DDC) package - so TPS62260DDCR cannot be forced into PWM mode.
How does the TPS62260DDCR handle short-circuit conditions on the output?
The TPS62260DDCR provides hiccup-style short-circuit protection using independent current-limit comparators on both high-side and low-side MOSFETs. When switch current exceeds 0.8–1.2 A, the affected FET turns off and the complementary FET activates to safely ramp down inductor current. The device does not latch off - it cycles between brief conduction and shutdown until the fault clears. This protects the TPS62260DDCR and external components without requiring manual reset.
TPS62260DDCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS62260DDCR FAQ
1.How can I place an order for TPS62260DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62260DDCR 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 TPS62260DDCR reliable?
The price and inventory of TPS62260DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62260DDCR is usually 5 days.
3.What payment methods are accepted for TPS62260DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62260DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62260DDCR?
TPS62260DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62260DDCR 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 TPS62260DDCR?
For technical support, including TPS62260DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62260DDCR requirements.
6.How does Aetrix verify that TPS62260DDCR is sourced from the original manufacturer or authorized distributors?
All TPS62260DDCR 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 TPS62260DDCR meets industry standards.
7.What is the process for return or replacement of TPS62260DDCR?
All TPS62260DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62260DDCR, 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 TPS62260DDCR part is unused and in its original packaging.
Return procedure for TPS62260DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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