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Texas Instruments TPS62224DDCR
- Part No.:
- TPS62224DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62224DDCR.pdf
- Description:
- IC REG BUCK 1.6V 400MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,754
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Product details
Overview
TPS62224DDCR from Texas Instruments is a synchronous step-down DC-DC converter in TSOT23-5 package, delivering 1.6 V fixed output at up to 400 mA from 2.5–6 V input. It operates at 1.25 MHz PWM under load and enters power-save mode (PFM) at light loads, achieving up to 95% efficiency with 15 µA quiescent current. It powers low-voltage DSP cores and application processors in portable media players.
For engineers reviewing the TPS62224DDCR datasheet, TPS62224DDCR pinout, TPS62224DDCR application, or TPS62224DDCR equivalent, key selection criteria include its fixed 1.6 V output, TSOT23-5 footprint, 400 mA capability, power-save mode behavior, and compatibility with ceramic input/output capacitors as small as 4.7 µF and 10 µF.
Technical Context
The TPS62224DDCR uses voltage-mode control with input voltage feed-forward for fast line/load regulation and stable operation with minimal external components. Its internal 0.5 V reference and fixed feedback divider enable precise 1.6 V output without external resistors.
It integrates P-channel and N-channel MOSFETs with on-resistances of 670 mΩ (P-ch, VI = 3.6 V) and 540 mΩ (N-ch, VI = 3.6 V), supports 100% duty-cycle low-dropout operation, and features digital self-calibration to maintain ±3% output accuracy across load and line variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.6 V ±3% over full load and line range - eliminates need for external feedback resistors. |
| Max Output Current | 400 mA continuous - sufficient for powering core rails of OMAP™ and TMS320™ DSPs. |
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (2.7–4.2 V), 3-cell NiMH/NiCd, and standard 3.3 V/5 V rails. |
| Switching Frequency | 1.25 MHz typical - enables use of compact 4.7 µH inductors and reduces EMI filtering requirements. |
| Quiescent Current | 15 µA typical in power-save mode - extends battery life in standby states of portable devices. |
| Efficiency Peak | Up to 95% - achieved at medium-to-heavy loads with ceramic input/output capacitors. |
| Package | TSOT23-5 (DDC) - 2.9 mm × 1.6 mm × 0.9 mm footprint ideal for space-constrained handheld PCBs. |
Pinout & Package
TSOT23-5 package: 5-pin thin-outline surface-mount with exposed thermal pad (not electrically connected). Pin 1 (VI) is marked by dot; pin order is clockwise when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VI | Input supply | Accepts 2.5–6 V; must be decoupled with ≥4.7 µF ceramic capacitor near pin. |
| 2 - GND | Power ground | Primary return path for input/output currents; connects to thermal pad for improved heat dissipation. |
| 3 - EN | Enable control | Active-high logic input; pull to VI to enable, to GND to shut down (0.1 µA IQ). |
| 4 - FB | Feedback | Internally connected to fixed 1.6 V divider; no external resistor required for TPS62224DDCR. |
| 5 - SW | Switch node | Drives external 4.7 µH inductor; requires low-ESR ceramic output capacitor (≥10 µF) at this node. |
Key Features
| Feature | Design Value |
|---|---|
| Power-save mode (PFM) | Reduces switching frequency and IQ to 15 µA at light loads - maintains high efficiency across 0.01–400 mA range. |
| Soft-start | Digital current-step ramp (83/167/335/670 mA) limits inrush - prevents input rail collapse during startup from weak sources like batteries. |
| 100% duty-cycle operation | Enables regulation down to VI ≈ VO + IO × rDS(on) - maximizes usable battery voltage in Li-ion systems. |
| Digital self-calibration | Adjusts duty cycle in ~1% steps to hold VO within ±3% - eliminates need for external compensation components. |
| Dynamic voltage positioning | Maintains VO ~0.8% above nominal at light load - provides headroom for transient droop during sudden load increases. |
Applications
| Portable Media Players | Digital Cameras |
|---|---|
Use Scenario: Powering image signal processor (ISP) and microSD interface at 1.6 V in compact camera modules. IC Role / Device Role / Timing Role: Primary core supply regulator with fast transient response to handle burst-mode sensor readout. Use Value: 95% peak efficiency and 15 µA quiescent current extend playback time; TSOT23-5 footprint saves board area. |
Use Scenario: Supplying 1.6 V to CMOS image sensor analog front-end and ADC reference in battery-powered cameras. IC Role / Device Role / Timing Role: Low-noise, tightly regulated core rail with dynamic voltage positioning to absorb sensor startup transients. Use Value: Fixed 1.6 V output eliminates resistor tolerance errors; soft-start prevents sensor reset during power-up. |
| Smartphones (Baseband/Modem) | WLAN PC Cards |
Use Scenario: Delivering 1.6 V to baseband processor subsystem during active data transmission and deep-sleep modes. IC Role / Device Role / Timing Role: System-level power management IC enabling seamless transition between PWM and PFM modes. Use Value: 1.25 MHz switching allows small passive components; 100% duty-cycle operation extracts full energy from aging Li-ion cells. |
Use Scenario: Regulating 1.6 V for WLAN MAC/PHY SoC in mini-PCI form factor cards with strict thermal constraints. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter minimizing heat generation in confined card slots. Use Value: TSOT23-5 thermal resistance (250 °C/W) combined with 160 mW power rating at 85 °C ambient ensures reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62221DDCR | Fixed 1.5 V output; otherwise identical electrical specs and pinout. | Suitable where system requires 1.5 V core rail instead of 1.6 V - no layout change needed. | Select when target SoC specifies 1.5 V nominal core voltage per datasheet. |
| TPS62229DDCR | Fixed 1.7 V output; same package, quiescent current, and efficiency profile. | Used in designs requiring marginally higher core voltage for timing closure or noise immunity. | Choose if system validation shows 1.7 V improves setup/hold margins without exceeding SoC absolute max ratings. |
Compared with TPS62221DDCR and TPS62229DDCR, the TPS62224DDCR provides the optimal 1.6 V output for TI OMAP-L1x and select TMS320C55x DSP derivatives, balancing voltage headroom and power loss while maintaining identical board-level integration and thermal performance.
Availability
TPS62224DDCR is available at Aetrix Electronics and suitable for portable media players, digital cameras, smartphones, and WLAN PC cards requiring stable component supply across long production lifecycles.
Supply support for TPS62224DDCR 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 decades of expertise in high-efficiency DC-DC conversion.
The TPS6222x product line was designed specifically for space- and battery-constrained portable electronics, delivering high efficiency across wide load ranges using minimal external components in ultra-small packages.
FAQ
What is the output voltage tolerance of the TPS62224DDCR over temperature and load?
The TPS62224DDCR maintains a fixed 1.6 V output with ±3% tolerance across the full operating ambient temperature range (–40 °C to +85 °C) and full load range (0–400 mA), verified under input voltages from 2.5 V to 6 V. This specification is guaranteed by internal digital self-calibration and a precision 0.5 V reference, not dependent on external components. The TPS62224DDCR achieves this stability without trimming or calibration during manufacturing.
Does the TPS62224DDCR require external feedback resistors to set its output voltage?
No, the TPS62224DDCR does not require external feedback resistors. It is the fixed-output variant (1.6 V) in the TPS6222x family, with an internal resistor divider permanently configured for that voltage. The FB pin is internally connected and must not be externally loaded. In contrast, the adjustable TPS62220DDCR requires external R1/R2 to set VO; the TPS62224DDCR simplifies design by eliminating those components entirely.
What is the minimum recommended input capacitor for stable operation of the TPS62224DDCR?
The minimum recommended input capacitor for the TPS62224DDCR is 4.7 µF ceramic, placed as close as possible to the VI and GND pins. This value is specified in TI's SLVS491E datasheet for all TPS6222x devices and ensures adequate high-frequency decoupling at 1.25 MHz switching. Lower values risk increased input ripple and potential instability; X5R or X7R dielectrics with ≤100 mΩ ESR are preferred.
Can the TPS62224DDCR operate with a 2.5 V input and still regulate a 1.6 V output?
Yes, the TPS62224DDCR supports input voltages as low as 2.5 V while regulating 1.6 V output, enabled by its 100% duty-cycle operation mode. In this mode, the internal P-channel MOSFET remains fully on, minimizing dropout. However, maximum output current is reduced at low VIN due to higher conduction losses - at 2.5 V input, full 400 mA is still achievable per datasheet test conditions, confirmed by the 150 °C junction temperature limit and thermal derating curve.
How does the TPS62224DDCR transition between PWM and power-save (PFM) modes?
The TPS62224DDCR automatically transitions from fixed-frequency 1.25 MHz PWM mode to variable-frequency power-save (PFM) mode when load current drops below approximately 66 mA (the skip current threshold). In PFM mode, switching pulses occur only as needed to maintain regulation, reducing quiescent current to 15 µA. The device re-enters PWM mode immediately upon detecting a load increase that would cause output voltage to fall below the comp-low-2 threshold, ensuring rapid transient recovery.
TPS62224DDCR 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.6V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA
- Frequency - Switching:
- 1.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS62224DDCR FAQ
1.How can I place an order for TPS62224DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62224DDCR 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 TPS62224DDCR reliable?
The price and inventory of TPS62224DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62224DDCR is usually 5 days.
3.What payment methods are accepted for TPS62224DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62224DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62224DDCR?
TPS62224DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62224DDCR 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 TPS62224DDCR?
For technical support, including TPS62224DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62224DDCR requirements.
6.How does Aetrix verify that TPS62224DDCR is sourced from the original manufacturer or authorized distributors?
All TPS62224DDCR 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 TPS62224DDCR meets industry standards.
7.What is the process for return or replacement of TPS62224DDCR?
All TPS62224DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62224DDCR, 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 TPS62224DDCR part is unused and in its original packaging.
Return procedure for TPS62224DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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