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Texas Instruments TPS62260DDCT
- Part No.:
- TPS62260DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62260DDCT.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
TPS62260DDCT from Texas Instruments is an adjustable-output, synchronous step-down DC/DC converter optimized for Li-ion battery-powered systems. It delivers up to 600 mA output current across a 2 V–6 V input range, operates at 2.25 MHz fixed switching frequency, supports power save mode with dynamic voltage positioning, and achieves ±1.5% output voltage accuracy in PWM mode - enabling compact, high-efficiency point-of-load regulation in mobile phones and portable media players.
For engineers reviewing the TPS62260DDCT datasheet, TPS62260DDCT pinout, TPS62260DDCT application, or TPS62260DDCT equivalent, key selection criteria include its SOT-5 package footprint, MODE-pin-controllable PFM/PWM transition, 15-μA quiescent current in light-load PFM mode, 100% duty cycle low-dropout capability, and compatibility with standard 2.2-μH inductors and 10-μF ceramic output capacitors.
Technical Context
The TPS62260DDCT implements voltage-mode control with input-voltage feed-forward for fast line/load transient response and stable operation with small ceramic capacitors. Its integrated high-side (480 mΩ max) and low-side (380 mΩ max) MOSFETs enable synchronous rectification without external diodes.
It features automatic PFM-to-PWM mode transition based on load current, dynamic voltage positioning (+1% nominal output in PFM), undervoltage lockout (1.85 V falling threshold), and thermal shutdown at 140°C with 20°C hysteresis - all managed within a single monolithic IC with no external compensation required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V to 6 V - supports single-cell Li-ion (2.7–4.2 V), two/three-cell alkaline, and 3.3 V/5 V rails without external regulators. |
| Output Current | Up to 600 mA at VIN ≥ 2.5 V - sufficient for low-power DSP cores, RF transceivers, and application processors in portable devices. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of sub-3 mm × 3 mm inductors and reduces EMI filtering complexity. |
| Quiescent Current | 15 μA typical in PFM mode - extends battery runtime during standby/sleep states in always-on subsystems. |
| Output Voltage Accuracy | ±1.5% in PWM mode - ensures stable core voltage for sensitive digital loads without post-regulation. |
| Shutdown Current | 0.1–1 μA - minimizes battery drain when system is fully powered down. |
| Reference Voltage | 600 mV - sets adjustable output range from 0.6 V to VIN via external resistor divider (e.g., 1.2 V, 1.8 V, 2.5 V). |
Pinout & Package
SOT-5 (DDC) package: 2.90 mm × 1.60 mm body, 0.95 mm height, thermally enhanced pad-less construction. Pin 1 = VIN, Pin 2 = GND, Pin 3 = EN, Pin 4 = FB, Pin 5 = SW.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input supply | Accepts 2–6 V; must be decoupled with ≥4.7 μF ceramic capacitor close to pin to suppress high-frequency noise and support peak current demands. |
| GND (Pin 2) | Ground reference | Primary return path for power and feedback circuits; requires low-impedance PCB connection to minimize noise coupling into FB node. |
| EN (Pin 3) | Enable control input | Active-high logic; pulling low disables converter and reduces IQ to <1 μA; supports power sequencing with other rails via external controller. |
| FB (Pin 4) | Feedback input | Connects to resistor divider from VOUT; internal 600-mV reference sets output voltage; routing must avoid SW and inductor to prevent instability. |
| SW (Pin 5) | Switch node | Drives external inductor; carries high di/dt square wave; requires short, wide trace and ground plane clearance to reduce EMI and parasitic ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode with Dynamic Voltage Positioning | Automatically enters PFM at light loads; regulates output 1% above nominal to minimize undershoot during sudden load steps - critical for burst-mode processors. |
| 100% Duty Cycle Low-Dropout Operation | Extends usable battery life by maintaining regulation down to VIN ≈ VOUT + IOUT×(RDS(on)_HS + DCR_L); enables full discharge of Li-ion cells to ~2.7 V. |
| 2.25-MHz Fixed-Frequency PWM | Ensures predictable EMI spectrum; MODE pin forces PWM even at light loads - simplifies filtering for noise-sensitive analog/RF sections. |
| Integrated Synchronous MOSFETs | Eliminates external Schottky diode; high-side RDS(on) ≤ 480 mΩ and low-side ≤ 380 mΩ at 3.6 V - improves efficiency by 8–12% vs asynchronous designs. |
| Soft-Start Ramp Time | 250 μs (5% to 95% VOUT) - limits inrush current during power-up, preventing brownout on weak sources like coin-cell batteries or USB ports. |
Applications
| Mobile Phone Core Supply | Portable Media Player Audio Codec |
|---|---|
Use Scenario: Powers ARM Cortex-A series application processor core rail requiring dynamically scaled voltage (e.g., 1.0–1.3 V) and fast transient response during CPU frequency changes. IC Role / Device Role / Timing Role: Primary step-down regulator delivering tightly regulated, low-noise VDD_CORE with programmable output via FB divider; MODE pin tied to system PMIC to force PWM during active decode. Use Value: Achieves >90% efficiency at 400 mA while maintaining <15 mV output ripple - avoids processor throttling and audio artifacts during video playback. |
Use Scenario: Supplies 1.8 V bias to stereo DAC/ADC and headphone amplifier in flash-based MP3 players with 3.7 V Li-ion battery. IC Role / Device Role / Timing Role: Point-of-load converter placed adjacent to audio IC; EN controlled by system microcontroller to mute power during sleep; FB network trimmed for precise 1.8 V. Use Value: 15 μA quiescent current extends standby time to >100 hours; PFM mode eliminates 2.25 MHz switching noise from analog signal path. |
| Low-Power DSP Subsystem | IoT Sensor Hub Power Rail |
Use Scenario: Provides 1.2 V to TI C5000 DSP in battery-operated acoustic sensor node performing FFT-based vibration analysis. IC Role / Device Role / Timing Role: Dedicated regulator for DSP core; SW node routed away from analog front-end; COUT = 10 μF X5R placed directly at FB pin. Use Value: 2.25 MHz switching allows use of 2.2 μH shielded inductor in <3 mm² area - meets size constraints of compact enclosure while sustaining 500 mA peak current. |
Use Scenario: Generates 3.3 V for BLE SoC, MEMS accelerometer, and environmental sensors in coin-cell-powered asset tracker. IC Role / Device Role / Timing Role: Main system regulator; VIN connected to boost converter output; MODE pin grounded to enable automatic PFM for ultra-low average current draw. Use Value: 100% duty cycle operation extracts full energy from CR2032 cell down to 2.2 V; shutdown current <1 μA preserves battery for multi-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62261DDCT | Fixed 1.8 V output; no MODE pin; auto PFM/PWM transition only | Eliminates FB resistor network but lacks output adjustability - suitable only where 1.8 V is mandatory | Select when board space is constrained and output voltage is fixed; not interchangeable with TPS62260DDCT due to missing MODE and FB pins. |
| TPS62067QDSGRQ1 | AEC-Q100 qualified; 3-MHz switching; 1.2-V fixed output; higher IQ (25 μA) | Designed for automotive infotainment displays; wider temp range (–40°C to 125°C) and enhanced ESD robustness | Choose for automotive-grade reliability; incompatible pinout and higher cost - not drop-in for consumer portable designs. |
Compared with TPS62261DDCT and TPS62067QDSGRQ1, the TPS62260DDCT uniquely balances adjustability, ultra-low quiescent current, and SOT-5 footprint - making it optimal for cost-sensitive, battery-constrained portable electronics where output voltage may vary across product SKUs.
Availability
TPS62260DDCT is available at Aetrix Electronics and suitable for mobile phone core supplies, portable media player audio codecs, and low-power DSP subsystems requiring stable component supply across production lifecycles.
Supply support for TPS62260DDCT 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 technologies, with over 90 years of innovation in high-reliability silicon solutions.
The TPS6226x family was designed specifically for space-constrained, battery-powered portable electronics - emphasizing high efficiency across full load range, minimal external component count, and seamless integration with Li-ion battery voltage profiles.
FAQ
What output voltage range does the TPS62260DDCT support?
The TPS62260DDCT supports an adjustable output voltage range from 0.6 V to VIN using an external resistor divider on the FB pin. Its internal 600-mV reference enables precise setting of common rails such as 1.2 V, 1.8 V, or 2.5 V. The device maintains ±1.5% accuracy in PWM mode across temperature and load, and includes dynamic voltage positioning (+1%) in PFM mode to improve transient response.
How does the MODE pin affect TPS62260DDCT operation?
The MODE pin on the TPS62260DDCT selects between automatic PFM/PWM transition (MODE = GND) and forced fixed-frequency PWM (MODE = VIN). In PFM mode, the TPS62260DDCT achieves 15-μA quiescent current and dynamic voltage positioning; in forced PWM, it sustains 2.25-MHz operation regardless of load - reducing output ripple at the cost of lower light-load efficiency.
Can the TPS62260DDCT operate with a 2.2-μH inductor and 10-μF output capacitor?
Yes - the TPS62260DDCT is explicitly optimized for use with a 2.2-μH inductor and 10-μF ceramic output capacitor, as validated in TI's SLVS763E datasheet. This combination delivers stable regulation, <250 μs soft-start ramp time, and minimal output voltage ripple in both PWM and PFM modes while meeting EMI and size targets for portable designs.
What is the minimum input voltage required for TPS62260DDCT to maintain regulation at 600 mA?
The minimum input voltage for the TPS62260DDCT to sustain 600 mA depends on output voltage and component losses. For example, at VOUT = 1.2 V, the calculated VIN(min) ≈ 1.2 V + 0.6 A × (480 mΩ + 110 mΩ) = 1.554 V - but the absolute minimum specified operating VIN is 2 V. Below 2 V, undervoltage lockout activates at ~1.85 V (falling), disabling the device to protect the battery.
Does the TPS62260DDCT include thermal protection?
Yes - the TPS62260DDCT incorporates thermal shutdown that disables both high-side and low-side MOSFETs when junction temperature exceeds 140°C (typical), with 20°C hysteresis. Once temperature falls below 120°C, normal operation resumes. This protection is fully integrated and requires no external components, ensuring safe operation under sustained overload or poor PCB thermal design.
TPS62260DDCT 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
TPS62260DDCT FAQ
1.How can I place an order for TPS62260DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62260DDCT 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 TPS62260DDCT reliable?
The price and inventory of TPS62260DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62260DDCT is usually 5 days.
3.What payment methods are accepted for TPS62260DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62260DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62260DDCT?
TPS62260DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62260DDCT 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 TPS62260DDCT?
For technical support, including TPS62260DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62260DDCT requirements.
6.How does Aetrix verify that TPS62260DDCT is sourced from the original manufacturer or authorized distributors?
All TPS62260DDCT 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 TPS62260DDCT meets industry standards.
7.What is the process for return or replacement of TPS62260DDCT?
All TPS62260DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62260DDCT, 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 TPS62260DDCT part is unused and in its original packaging.
Return procedure for TPS62260DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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