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Texas Instruments TPS62240DDCR
- Part No.:
- TPS62240DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62240DDCR.pdf
- Description:
- IC REG BUCK ADJ 300MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:7,386
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Product details
Overview
TPS62240DDCR from Texas Instruments is a synchronous step-down DC-DC converter optimized for battery-powered portable electronics. It delivers up to 300 mA output current from 2 V to 6 V input, features adjustable 0.6 V–VIN output voltage, operates at 2.25 MHz fixed frequency (or PFM in light load), and achieves >94% peak efficiency with 15 μA quiescent current in power-save mode - used in mobile phone core logic rails.
For engineers reviewing the TPS62240DDCR datasheet, TPS62240DDCR pinout, TPS62240DDCR application, or TPS62240DDCR equivalent, key selection criteria include its SOT-5 package footprint, 2.25-MHz switching for compact filter design, MODE-pin controllable PWM/PSM transition, 1.5% feedback voltage accuracy, and 100% duty-cycle low-dropout operation extending Li-ion battery runtime.
Technical Context
The TPS62240DDCR employs voltage-mode control with input voltage feed-forward for fast line/load regulation and stable operation with small ceramic capacitors. Its dual-mode architecture automatically transitions between fixed-frequency PWM (2.25 MHz) and pulse-frequency modulation (PFM) based on load current, minimizing ripple in PFM while enabling noise-sensitive filtering in forced-PWM mode via the MODE pin.
Internally, it integrates high-side (480 mΩ max RDS(on)) and low-side (380 mΩ max RDS(on)) MOSFETs, a 0.6 V reference, undervoltage lockout (1.85 V falling threshold), thermal shutdown (140°C), and soft-start (250 μs ramp-up). The SOT-5 package lacks the MODE pin - limiting operation to automatic PFM/PWM mode without external forcing capability.
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 300 mA - sufficient for DSP cores, Bluetooth baseband, or camera ISPs in space-constrained handhelds. |
| Switching Frequency | 2.25 MHz (typical) - enables use of 2.2 μH inductors and 4.7–10 μF ceramic capacitors for sub-1 mm solution height. |
| Quiescent Current | 15 μA (typical, PFM mode) - extends battery life in standby/sleep states of always-on sensors or wireless peripherals. |
| Feedback Accuracy | ±1.5% in PWM mode - ensures tight output regulation for voltage-sensitive processors and RF front-ends. |
| Shutdown Current | <1 μA - isolates load during system deep-sleep, preventing parasitic drain from primary battery. |
| Output Voltage Range | Adjustable from 0.6 V to VIN - supports dynamic voltage scaling for ARM Cortex-A/M cores and low-voltage I/O domains. |
Pinout & Package
TPS62240DDCR uses the 5-pin SOT-23 (DDC) package (2.90 mm × 1.60 mm), optimized for low-profile portable PCBs. Thermal performance is characterized by RθJA = 226.9°C/W, requiring minimal copper pour for ≤300 mA continuous operation at ambient ≤85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2–6 V; must be decoupled with ≥4.7 μF ceramic capacitor near pin to suppress switching noise. |
| GND | Ground reference | Primary return path for power and control circuits; connects to exposed thermal pad in WSON but not present in SOT-5. |
| EN | Enable control | Active-high logic input; pulling low disables regulator and reduces current draw to <1 μA for system-level power sequencing. |
| FB | Feedback node | Connects to resistor divider for adjustable output; internal 0.6 V reference sets VOUT = 0.6 × (1 + R1/R2). |
| SW | Switch node | Drives external 2.2 μH inductor; high dv/dt requires short, low-inductance trace routing away from sensitive analog lines. |
Key Features
| Feature | Design Value |
|---|---|
| High-efficiency synchronous rectification | Eliminates external Schottky diode, reducing BOM count and improving efficiency across 1–300 mA load range. |
| Automatic PFM/PWM mode transition | Maintains >85% efficiency down to 100 μA load without manual mode control - critical for intermittent sensor wake-ups. |
| 100% duty-cycle low-dropout operation | Extends usable battery voltage down to VOUT + IOUT×RDS(on), e.g., sustaining 1.8 V output until VIN drops to ~1.95 V at 200 mA. |
| Integrated soft-start | Ramps output in 250 μs to limit inrush current and prevent brownout on weak sources like coin cells or aging batteries. |
| Undervoltage lockout (UVLO) | Disables output below 1.85 V (falling) to prevent system instability and excessive battery discharge in deep depletion. |
Applications
| Bluetooth™ Headsets | Mobile Phone Application Processors |
|---|---|
Use Scenario: Powering Bluetooth baseband IC and audio codec in ultra-thin headset form factor with single Li-poly battery. IC Role / Device Role / Timing Role: Primary 1.2 V/1.8 V step-down regulator delivering clean, low-noise supply with fast transient response to RF bursts. Use Value: 2.25 MHz switching enables 0603-size 2.2 μH inductor and 0603 10 μF capacitor, achieving <1 mm profile while maintaining >90% efficiency at 50–150 mA. | Use Scenario: Supplying core voltage to ARM-based application processor during active UI rendering and background sync tasks. IC Role / Device Role / Timing Role: Adjustable buck converter dynamically scaled from 1.0 V (idle) to 1.3 V (peak) via FB resistor network. Use Value: 15 μA quiescent current in PFM mode extends standby time; 100% duty cycle sustains operation until battery reaches 2.0 V, maximizing per-charge runtime. |
| Portable Media Players | Digital Cameras (Image Sensor Bias) |
Use Scenario: Generating stable 1.2 V for NAND flash controller and 3.3 V for SD card interface in MP3 player with 2xAA alkaline supply. IC Role / Device Role / Timing Role: Dual-rail support via cascaded regulation (e.g., 3.3 V from 1.2 V) or independent channels using multiple TPS62240DDCRs. Use Value: Wide 2–6 V input accommodates fresh alkaline (3.2 V) to depleted (2.0 V) without dropout; ±1.5% accuracy prevents NAND timing violations. | Use Scenario: Providing low-noise 2.8 V bias to CMOS image sensor analog front-end during video capture. IC Role / Device Role / Timing Role: Low-ripple power source with MODE pin omitted in SOT-5 - relying on inherent PFM smoothing for analog signal integrity. Use Value: PFM-mode output ripple minimized by 10 μF X5R capacitor and 2.2 μH shielded inductor, meeting sensor PSRR requirements without added LDO post-regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62243DRV | Same family, 1.8 V fixed output, 6-pin WSON package with MODE pin - enables forced PWM mode. | Eliminates external feedback resistors but requires PCB redesign for 2×2 mm WSON footprint and MODE pin routing. | Select when fixed 1.8 V output and noise-sensitive PWM-only operation justify package change and layout update. |
| TPS62231DRVR | 2.25 MHz, 300 mA, 0.6–6 V input, but 1.2 V fixed output; 6-pin WSON; 17 μA IQ; no MODE pin. | Pin-compatible with TPS62243DRV but not TPS62240DDCR; lacks adjustable output and UVLO hysteresis spec. | Choose for cost-sensitive 1.2 V rail where adjustable output is unnecessary and SOT-5 footprint is not mandatory. |
Compared with TPS62240DDCR, TPS62243DRV offers fixed 1.8 V output and forced-PWM capability at the cost of larger WSON packaging and loss of adjustability, while TPS62231DRVR provides identical performance in 1.2 V fixed configuration but omits UVLO details and requires WSON layout - making TPS62240DDCR optimal for space-constrained, adjustable-voltage designs.
Availability
TPS62240DDCR is available at Aetrix Electronics and suitable for mobile phones, Bluetooth headsets, and portable media players requiring stable component supply across production lifecycles.
Supply support for TPS62240DDCR 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 analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The TPS6224x product line was engineered specifically for ultra-compact, high-efficiency power conversion in battery-powered portable devices - emphasizing minimal solution size, wide input range, and intelligent light-load efficiency management.
FAQ
What is the maximum output current capability of the TPS62240DDCR?
The TPS62240DDCR delivers up to 300 mA of continuous output current under recommended operating conditions (2 V ≤ VIN ≤ 6 V, TA ≤ 85°C). At input voltages below 2.3 V, the maximum rated output current reduces to 150 mA due to internal current-limit thresholds and MOSFET RDS(on) constraints. Actual achievable current depends on thermal design, inductor saturation rating, and PCB copper area.
Does the TPS62240DDCR support adjustable output voltage, and how is it configured?
Yes, the TPS62240DDCR supports adjustable output voltage from 0.6 V to VIN using an external resistor divider connected to the FB pin. The output is set by VOUT = 0.6 V × (1 + R1/R2), where R2 is typically 180 kΩ or 360 kΩ to minimize divider current while maintaining noise immunity. The internal 0.6 V reference has ±1.5% accuracy in PWM mode, directly determining output regulation tolerance.
How does the TPS62240DDCR manage efficiency at light load currents?
The TPS62240DDCR automatically enters power-save mode (PFM) at light loads, reducing switching frequency and quiescent current to 15 μA typical. This maintains >85% efficiency down to ~100 μA output current. Unlike forced-PWM variants, the SOT-5 TPS62240DDCR lacks a MODE pin, so PFM/PWM transition is fully autonomous - optimizing battery life without firmware or external control overhead.
What package type and thermal characteristics apply to the TPS62240DDCR?
The TPS62240DDCR is supplied in the 5-pin SOT-23 (DDC) package measuring 2.90 mm × 1.60 mm. Its junction-to-ambient thermal resistance is 226.9°C/W, indicating moderate self-heating at full load; adequate thermal relief (≥100 mm² 1-oz copper pour connected to GND pin) is required for sustained 300 mA operation at 85°C ambient.
Can the TPS62240DDCR operate with a single-cell Li-ion battery throughout its full discharge curve?
Yes, the TPS62240DDCR supports input voltages from 2 V to 6 V, covering the full discharge range of a single Li-ion cell (4.2 V fresh to ~2.5 V depleted). Its 100% duty-cycle capability allows regulation down to VOUT + IOUT×RDS(on) - e.g., sustaining 1.8 V output until VIN drops to ~1.95 V at 200 mA - maximizing usable battery energy and runtime in portable systems.
TPS62240DDCR 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:
- 300mA
- 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
TPS62240DDCR FAQ
1.How can I place an order for TPS62240DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62240DDCR 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 TPS62240DDCR reliable?
The price and inventory of TPS62240DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62240DDCR is usually 5 days.
3.What payment methods are accepted for TPS62240DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62240DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62240DDCR?
TPS62240DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62240DDCR 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 TPS62240DDCR?
For technical support, including TPS62240DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62240DDCR requirements.
6.How does Aetrix verify that TPS62240DDCR is sourced from the original manufacturer or authorized distributors?
All TPS62240DDCR 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 TPS62240DDCR meets industry standards.
7.What is the process for return or replacement of TPS62240DDCR?
All TPS62240DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62240DDCR, 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 TPS62240DDCR part is unused and in its original packaging.
Return procedure for TPS62240DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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