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Texas Instruments TPS62223DDCT
- Part No.:
- TPS62223DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62223DDCT.pdf
- Description:
- IC REG BUCK 2.3V 400MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
TPS62223DDCT from Texas Instruments is a fixed-output, 2.3-V/400-mA synchronous step-down DC-DC converter in TSOT23-5 package, operating from 2.5 V to 6 V input, delivering up to 95% efficiency at 1.25-MHz PWM switching, and featuring 15-µA quiescent current in power-save mode for portable Li-Ion and NiMH/NiCd battery-powered systems.
For engineers reviewing the TPS62223DDCT datasheet, TPS62223DDCT pinout, TPS62223DDCT application, or TPS62223DDCT equivalent, key selection considerations include its fixed 2.3-V output, 1.25-MHz constant-frequency operation with automatic PFM transition at light load, 100% duty-cycle low-dropout capability, soft-start function, and dynamic output-voltage positioning for transient robustness.
Technical Context
The TPS62223DDCT employs voltage-mode control with input voltage feed-forward for fast line/load regulation and stable operation with small ceramic capacitors. Its internal 0.5-V reference and fixed feedback divider enable precise 2.3-V output without external resistors.
At light loads, it enters pulse-frequency modulation (PFM) power-save mode-reducing switching frequency and quiescent current to ~15 µA-while maintaining regulation via dynamic voltage positioning thresholds (typically ±0.8% and ±1.6% around nominal output). The integrated P-channel (670 mΩ typ @ 3.6 V) and N-channel (540 mΩ typ @ 3.6 V) MOSFETs support synchronous rectification and 100% duty-cycle operation down to VIN = VOUT + IOUT × rDS(on).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.3 V ±3% over full load and line range-enables direct supply to core logic requiring tight tolerance without external feedback components. |
| Max Output Current | 400 mA continuous-supports moderate-power digital subsystems such as baseband processors or memory interfaces in handheld devices. |
| Input Voltage Range | 2.5 V to 6 V-compatible with single-cell Li-Ion (2.7–4.2 V), 3-cell NiMH/NiCd (3.6–4.5 V), and standard 3.3-V/5-V rails. |
| Switching Frequency | 1.25 MHz typical (0.8–1.85 MHz range)-allows use of compact 4.7-µH inductors and 10-µF ceramic output capacitors, minimizing board area. |
| Quiescent Current | 15 µA typical in power-save mode-extends battery runtime in standby or low-activity states without sacrificing regulation. |
| Efficiency Peak | Up to 95%-achieved under medium-to-heavy load with synchronous rectification, reducing thermal stress and enabling thermally constrained layouts. |
| Enable Threshold | EN high ≥1.3 V, low ≤0.4 V-ensures clean, noise-immune startup/shutdown control compatible with standard GPIOs. |
Pinout & Package
TPS62223DDCT is housed in a 5-pin TSOT23 (DDC) package-2.9 mm × 1.6 mm × 0.9 mm-with exposed thermal pad (not electrically connected). This ultra-compact, surface-mount package supports high-density portable designs and enables efficient heat dissipation via PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VI | Power Input | Primary supply connection; accepts 2.5–6 V; requires local 4.7-µF ceramic decoupling capacitor. |
| 2 - GND | Ground Reference | Analog/digital ground return; must be connected to low-impedance PCB ground plane adjacent to VI and SW pins. |
| 3 - EN | Enable Control | Digital input: high ≥1.3 V enables regulation; low ≤0.4 V forces shutdown (0.1 µA IQ). |
| 4 - FB | Feedback Input | Internally tied to fixed 2.3-V divider; no external resistor required-simplifies layout and eliminates trimming errors. |
| 5 - SW | Switch Node | Connection point for external 4.7-µH inductor; carries high di/dt square-wave; requires short, wide trace and ground shielding. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Output-Voltage Positioning | Maintains output ~0.8% above nominal during light load-provides headroom to absorb heavy-load transients without undershoot, enabling smaller output capacitance (10 µF). |
| Soft Start | Digital current-ramping sequence (83 → 167 → 335 → 670 mA) limits inrush current and prevents input rail collapse during startup from weak sources like batteries. |
| 100% Duty-Cycle Operation | Enables regulation down to VIN = VOUT, maximizing usable battery voltage range and extending runtime in deep-discharge conditions. |
| Integrated Synchronous Power Stage | Eliminates external Schottky diode-reduces component count, improves efficiency by ~10% vs. asynchronous designs, and avoids reverse recovery losses. |
| Internal Loop Compensation | Removes need for external compensation network-simplifies design, ensures stability with recommended 4.7-µH/10-µF filter, and reduces BOM cost. |
Applications
| Smartphone Baseband Supply | WLAN PC Card Core Rail |
|---|---|
Use Scenario: Powers ARM-based baseband processor core in dual-mode GSM/WCDMA smartphones operating from single-cell Li-Ion battery (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 2.3-V core voltage with fast load transient response to handle burst-mode RF transmission. Use Value: Dynamic voltage positioning and 1.25-MHz switching minimize output capacitor size (10 µF) while maintaining <50-mV undershoot during 50–400-mA load steps. |
Use Scenario: Supplies 2.3-V logic rail for IEEE 802.11b/g WLAN controller and RF transceiver on mini-PCI form-factor PC cards. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC-DC converter enabling compliance with PC Card power budget constraints and EMI limits. Use Value: 95% peak efficiency and 15-µA quiescent current extend host laptop battery life during intermittent WLAN activity without thermal derating. |
| Portable Media Player DSP Core | Digital Camera Image Processor |
Use Scenario: Provides regulated 2.3-V supply to low-power TMS320™ DSP in flash-based audio/video players powered by 3-cell NiMH batteries. IC Role / Device Role / Timing Role: Synchronous buck converter with soft start and undervoltage lockout ensuring glitch-free boot and brownout protection during battery discharge. Use Value: 100% duty-cycle operation sustains regulation until battery drops to 2.3 V, extracting maximum energy per charge cycle. |
Use Scenario: Generates 2.3-V core voltage for CMOS image signal processor (ISP) in compact digital cameras with auto-focus and video recording. IC Role / Device Role / Timing Role: Compact, low-EMI power stage supporting rapid ISP clock gating and burst-mode sensor readout without supply droop. Use Value: TSOT23-5 footprint and integrated MOSFETs reduce solution size by >40% vs. discrete buck solutions, critical for thin camera modules. |
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 |
|---|---|---|---|
| TPS62222DDCT | Fixed 1.8-V output; identical package, pinout, and electrical specs except output voltage and feedback divider. | Suitable where system logic requires 1.8-V I/O or core voltage instead of 2.3 V; no layout change needed. | Select when target rail matches 1.8 V and same efficiency/quiescent current profile is required. |
| TPS62224DDCT | Fixed 1.6-V output; shares same architecture, TSOT23-5 package, and 1.25-MHz switching but differs in internal feedback ratio. | Used in lower-voltage microcontroller or FPGA core supplies where 1.6 V meets VCCINT requirements. | Choose for 1.6-V applications-verify compatibility with downstream logic VIH/VIL margins and transient response needs. |
Compared with TPS62223DDCT, TPS62222DDCT delivers 1.8 V instead of 2.3 V with identical efficiency, quiescent current, and transient behavior-making it a direct functional alternative for 1.8-V rails-while TPS62224DDCT targets 1.6-V domains with matching thermal and footprint characteristics but requires validation of load regulation at lower output voltage.
Availability
TPS62223DDCT is available at Aetrix Electronics and suitable for smartphone baseband supplies, WLAN PC card core rails, portable media player DSP cores, and digital camera image processor power delivery requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS62223DDCT 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 connectivity technologies, with decades of expertise in power management IC design and high-volume manufacturing reliability.
The TPS6222x family-including TPS62223DDCT-is engineered for space-constrained, battery-powered portable electronics, delivering high-efficiency, low-quiescent-current DC-DC conversion with minimal external components and robust transient performance.
FAQ
What is the output voltage accuracy of the TPS62223DDCT over temperature and load?
The TPS62223DDCT maintains a fixed 2.3-V output with ±3% accuracy across the full operating ambient temperature range (–40°C to +85°C) and full load current range (0–400 mA), as specified in the Electrical Characteristics table under "Fixed output voltage" test conditions. This tolerance includes initial accuracy, line regulation (0.26%/V), and load regulation (0.0014%/mA), ensuring reliable operation without external trimming.
Does the TPS62223DDCT require external feedback resistors to set the output voltage?
No, the TPS62223DDCT does not require external feedback resistors. It integrates a precision internal resistor divider optimized for a fixed 2.3-V output, referenced to the 0.5-V internal bandgap. The FB pin is internally connected to this divider, eliminating component count, layout sensitivity, and tolerance drift associated with external resistive networks.
How does the TPS62223DDCT manage efficiency at very light loads (e.g., <1 mA)?
The TPS62223DDCT automatically transitions into power-save mode (PFM) at light loads, reducing switching frequency and lowering quiescent current to 15 µA typical. This mode uses dynamic voltage positioning-holding output ~0.8% above nominal-to preserve regulation while minimizing idle power loss, achieving >80% efficiency even at 100-µA load.
Can the TPS62223DDCT operate with an input voltage equal to its 2.3-V output?
Yes, the TPS62223DDCT supports 100% duty-cycle operation, allowing continuous regulation when input voltage equals or slightly exceeds the 2.3-V output. This low-dropout capability extends usable battery life by enabling operation down to VIN = VOUT + IOUT × rDS(on), critical for single-cell Li-Ion systems nearing end-of-discharge.
What is the recommended minimum output capacitor for stable operation of the TPS62223DDCT?
For the TPS62223DDCT with its fixed 2.3-V output, Texas Instruments specifies a minimum 10-µF ceramic output capacitor when used with a 10-µH inductor. If using a 4.7-µH inductor (as in typical high-efficiency layouts), a ≥22-µF ceramic capacitor is required to maintain stability and meet ±3% output accuracy, especially in power-save mode.
TPS62223DDCT 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):
- 2.3V
- 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
TPS62223DDCT FAQ
1.How can I place an order for TPS62223DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62223DDCT 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 TPS62223DDCT reliable?
The price and inventory of TPS62223DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62223DDCT is usually 5 days.
3.What payment methods are accepted for TPS62223DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62223DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62223DDCT?
TPS62223DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62223DDCT 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 TPS62223DDCT?
For technical support, including TPS62223DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62223DDCT requirements.
6.How does Aetrix verify that TPS62223DDCT is sourced from the original manufacturer or authorized distributors?
All TPS62223DDCT 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 TPS62223DDCT meets industry standards.
7.What is the process for return or replacement of TPS62223DDCT?
All TPS62223DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62223DDCT, 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 TPS62223DDCT part is unused and in its original packaging.
Return procedure for TPS62223DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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