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Texas Instruments TPS62240DDCRG4
- Part No.:
- TPS62240DDCRG4
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62240DDCRG4.pdf
- Description:
- IC REG BUCK ADJ 300MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS62240DDCRG4 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, supports adjustable output voltage (0.6 V to VIN), operates at 2.25 MHz fixed frequency, and enters power save mode at light loads to maintain >94% efficiency across the full load range - used in mobile phone core logic rails.
For engineers reviewing the TPS62240DDCRG4 datasheet, TPS62240DDCRG4 pinout, TPS62240DDCRG4 application, or TPS62240DDCRG4 equivalent, key selection criteria include its 15-μA quiescent current in PFM mode, 100% duty cycle low-dropout operation, MODE pin-controlled PWM/PSM transition, and SOT-23-5 package compatibility with space-constrained handheld designs.
Technical Context
The TPS62240DDCRG4 implements voltage-mode control with input voltage feed-forward for fast line/load regulation and stable operation with small ceramic capacitors. Its dual-mode operation - fixed-frequency PWM under moderate/heavy loads and automatic pulse-frequency modulation (PFM) at light loads - is managed via the MODE pin and internal comparators monitoring inductor current zero-crossing.
It integrates high-side and low-side MOSFETs with typical RDS(on) of 240 mΩ and 180 mΩ respectively, features undervoltage lockout (1.85 V falling threshold), thermal shutdown at 140°C, and soft-start with 250 μs VOUT ramp-up time. The FB pin accepts an external resistor divider to set output voltage with ±1.5% accuracy in PWM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V to 6 V - supports single Li-ion, 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, and camera ISP subsystems. |
| Switching Frequency | 2.25 MHz (fixed) - enables use of compact 2.2 µH inductors and 0603-size capacitors for <1-mm solution height. |
| Quiescent Current | 15 µA typical in PFM mode - extends battery life in standby/sleep states of portable devices. |
| Feedback Reference | 0.6 V internal reference - allows precise output setting from 0.6 V to VIN using standard resistor dividers. |
| Shutdown Current | <1 µA - minimizes battery drain when EN = GND in system-level power gating. |
| Output Accuracy | ±1.5% in PWM mode - ensures stable core voltage for processors operating near performance limits. |
Pinout & Package
TPS62240DDCRG4 uses the 5-pin SOT-23 (DDC) package, 2.90 mm × 1.60 mm body size, with exposed pad not present. Thermal resistance RθJA is 226.9°C/W, requiring careful PCB copper area design for thermal management in continuous 300 mA operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2–6 V supply; must be decoupled with ≥4.7 µF ceramic capacitor close to pin. |
| GND | Ground reference | Primary return path for power and feedback circuits; connects to PCB ground plane for noise control. |
| EN | Enable control | Active-high logic input; pulling low disables regulator and reduces current draw to <1 µA. |
| FB | Feedback sense | Monitors output via external resistor divider; open or shorted condition causes regulation failure. |
| SW | Switch node | Connects to inductor; carries high di/dt switching current - requires tight layout and minimal trace length. |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode (PSM) | Automatic PFM entry below ~10 mA load - sustains >90% efficiency at microamp loads without external control. |
| 100% Duty Cycle Operation | Enables dropout as low as IOUT × RDS(on) - extracts maximum runtime from declining Li-ion cells down to ~2.0 V. |
| Fast Soft-Start | 250 µs VOUT ramp (5%→95%) - prevents inrush current and avoids brownout on weak battery sources. |
| Integrated MOSFETs | High-side 240 mΩ / low-side 180 mΩ (TA = 25°C) - eliminates external FETs and gate drivers, reducing BOM count and footprint. |
| UVLO Protection | 1.85 V falling threshold - prevents erratic behavior and deep battery discharge during low-VIN conditions. |
Applications
| Bluetooth™ Headsets | Mobile Phones |
|---|---|
Use Scenario: Powering Bluetooth baseband IC and RF transceiver in mono/stereo headsets with single Li-ion cell. IC Role / Device Role / Timing Role: Primary buck regulator supplying 1.2–1.8 V core voltage with dynamic load response to audio packet bursts. Use Value: 2.25 MHz switching enables tiny 2.2 µH inductor and 10 µF output cap - critical for sub-2 cc headset form factor. | Use Scenario: Supplying application processor I/O or memory interface rail in entry-level smartphones. IC Role / Device Role / Timing Role: Secondary PMIC rail delivering stable 1.8 V or 2.8 V from main 3.8 V battery bus. Use Value: 15 µA quiescent current in PFM mode extends standby time by >15% versus non-PSM converters. |
| WLAN Modules | Digital Cameras |
Use Scenario: Powering 802.11b/g/n WLAN baseband and PA bias in portable hotspot or tablet add-on modules. IC Role / Device Role / Timing Role: Efficient 3.3 V or adjustable rail supporting burst-mode TX/RX current peaks up to 250 mA. Use Value: Fast line/load regulation and 2.25 MHz frequency minimize conducted EMI into sensitive RF receivers. | Use Scenario: Supplying image sensor analog front-end and ISP core in compact digital still/video cameras. IC Role / Device Role / Timing Role: Low-noise, tightly regulated 1.2 V or 1.5 V rail for precision ADC and timing-critical pixel processing. Use Value: MODE pin allows forced PWM mode during capture to suppress PFM ripple - ensuring clean sensor output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62242DDCR | Fixed 1.2 V output; no FB pin required; identical package, frequency, and efficiency profile. | Eliminates external resistor divider but lacks output voltage flexibility. | Select when system requires only 1.2 V and board space is constrained. |
| TPS62260DDCR | Higher 600 mA output capability; same 2.25 MHz frequency; slightly higher IQ (25 µA vs 15 µA). | Supports more demanding SoCs or multi-rail configurations where 300 mA is insufficient. | Choose when future-proofing for higher current or concurrent rail requirements. |
Compared with TPS62240DDCRG4, TPS62242DDCR trades adjustability for simplicity in fixed-voltage systems, while TPS62260DDCR provides headroom for increased load demands at the cost of marginally higher quiescent consumption - both retain pin-compatible SOT-23-5 footprints and share identical layout guidelines.
Availability
TPS62240DDCRG4 is available at Aetrix Electronics and suitable for Bluetooth headsets, mobile phones, and WLAN modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62240DDCRG4 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 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 electronics - emphasizing low quiescent current, small solution size, and seamless light-load efficiency preservation.
FAQ
What is the function of the MODE pin on the TPS62240DDCRG4?
The MODE pin on the TPS62240DDCRG4 selects between power save mode (MODE = GND) and forced fixed-frequency PWM mode (MODE = VIN). In PFM mode, the device skips pulses at light loads to achieve 15 µA quiescent current; in PWM mode, it maintains 2.25 MHz operation for lower output ripple in noise-sensitive applications. This pin is not present on the SOT-23-5 (DDC) package - only on the WSON-6 (DRV) variant. Therefore, the TPS62240DDCRG4 operates exclusively in automatic PFM/PWM transition mode and does not support forced PWM.
Can the TPS62240DDCRG4 support a 1.0 V output voltage?
Yes, the TPS62240DDCRG4 supports 1.0 V output via its adjustable feedback architecture. Using the internal 0.6 V reference and an external resistor divider on the FB pin, output voltage is calculated as VOUT = 0.6 V × (1 + R1/R2). For 1.0 V, a common solution is R1 = 240 kΩ and R2 = 360 kΩ. The TPS62240DDCRG4 maintains ±1.5% accuracy in PWM mode and supports outputs from 0.6 V up to VIN, making 1.0 V fully within specification and widely implemented in portable logic rails.
What is the maximum output current capability of the TPS62240DDCRG4 at 2.5 V input?
At 2.5 V input, the TPS62240DDCRG4 delivers up to 150 mA continuous output current, as specified in the Recommended Operating Conditions table for VIN < 2.3 V. This derating occurs due to reduced headroom for the high-side MOSFET's 100% duty cycle operation and increased conduction losses. Above 2.3 V input, the full 300 mA rating applies. Designers must verify thermal performance using RθJA = 226.9°C/W and ambient temperature limits when operating the TPS62240DDCRG4 near its current limit at low VIN.
Does the TPS62240DDCRG4 include overcurrent protection?
Yes, the TPS62240DDCRG4 integrates cycle-by-cycle overcurrent protection for both high-side and low-side MOSFETs. A current-limit comparator monitors switch current and disables the high-side FET if the forward current exceeds 560–840 mA (typical ILIMF). Simultaneously, the low-side FET activates to safely ramp down inductor current. This protection operates continuously in both PWM and PFM modes and is independent of external components - a core safety feature built into the TPS62240DDCRG4 silicon design.
Is the TPS62240DDCRG4 RoHS compliant and lead-free?
Yes, the TPS62240DDCRG4 is RoHS compliant and lead-free. Per Texas Instruments' official packaging information, the DDC (SOT-23-5) package carries the "G4" suffix indicating green (halogen-free) and lead-free construction, meeting JEDEC J-STD-020 moisture sensitivity level 1 and IPC/JEDEC J-STD-033 handling requirements. The device is rated for reflow soldering per industry-standard profiles and is qualified for commercial and industrial temperature ranges (–40°C to 85°C).
TPS62240DDCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TPS62240DDCRG4 FAQ
1.How can I place an order for TPS62240DDCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62240DDCRG4 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 TPS62240DDCRG4 reliable?
The price and inventory of TPS62240DDCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62240DDCRG4 is usually 5 days.
3.What payment methods are accepted for TPS62240DDCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62240DDCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62240DDCRG4?
TPS62240DDCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62240DDCRG4 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 TPS62240DDCRG4?
For technical support, including TPS62240DDCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62240DDCRG4 requirements.
6.How does Aetrix verify that TPS62240DDCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62240DDCRG4 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 TPS62240DDCRG4 meets industry standards.
7.What is the process for return or replacement of TPS62240DDCRG4?
All TPS62240DDCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62240DDCRG4, 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 TPS62240DDCRG4 part is unused and in its original packaging.
Return procedure for TPS62240DDCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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