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Texas Instruments TPS62223DDCR
- Part No.:
- TPS62223DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62223DDCR.pdf
- Description:
- IC REG BUCK 2.3V 400MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,084
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Product details
Overview
TPS62223DDCR from Texas Instruments is a fixed-output, 2.3-V/400-mA synchronous step-down DC-DC converter in TSOT23-5 package, operating at 1.25-MHz PWM with power-save mode, designed for Li-Ion and 3.3-V/5-V rail-powered portable systems including smart phones and PDAs.
For engineers reviewing the TPS62223DDCR datasheet, TPS62223DDCR pinout, TPS62223DDCR application, or TPS62223DDCR equivalent, key selection factors include its 2.3-V fixed output accuracy (±3%), 15-µA quiescent current in power-save mode, 2.5–6-V input range, and 95% peak efficiency at 200-mA load - all critical for battery runtime and thermal design in space-constrained handheld devices.
Technical Context
The TPS62223DDCR uses voltage-mode control with input-voltage feed-forward to deliver fast line/load regulation and stable operation with small ceramic capacitors. Its internal 0.5-V reference and fixed 2.3-V output are achieved via trimmed internal feedback divider - no external resistors required.
At light loads (<66 mA), it enters pulse-frequency modulation (PFM) power-save mode, reducing switching frequency and quiescent current to 15 µA typical while maintaining dynamic output voltage positioning (0.8% low-load boost). At heavier loads, it transitions seamlessly to fixed 1.25-MHz PWM operation with current-limit protection (600–880 mA).
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 2.3-V I/O rails without external feedback tuning. |
| Max Output Current | 400 mA continuous - supports core logic and peripheral ICs in compact portable systems. |
| Input Voltage Range | 2.5 V to 6 V - compatible with single-cell Li-Ion (2.7–4.2 V), 3.3-V, and 5-V system rails. |
| Switching Frequency | 1.25 MHz typical (0.8–1.85 MHz range) - allows use of small 4.7-µH inductors and <10-µF ceramic output capacitors. |
| Quiescent Current | 15 µA typical in power-save mode - extends battery life in standby/sleep states of always-on devices. |
| Efficiency Peak | Up to 95% at 200 mA - minimizes thermal dissipation in sealed enclosures like smartphones and digital cameras. |
| Enable Threshold | EN high ≥1.3 V, low ≤0.4 V - ensures reliable startup/shutdown control from standard GPIOs or battery monitors. |
Pinout & Package
TPS62223DDCR is housed in a 5-pin TSOT23 (DDC) package - 2.9 mm × 1.6 mm × 0.8 mm, surface-mount, lead-free, RoHS-compliant. Thermal resistance θJA = 250°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VI | Power Input | Accepts 2.5–6 V supply; requires 4.7-µF ceramic input capacitor close to pin for stability and EMI suppression. |
| 2 - GND | Ground Reference | System ground return path; must be connected to low-impedance PCB ground plane for noise immunity and thermal dissipation. |
| 3 - EN | Enable Control | Active-high logic input; pulling below 0.4 V disables converter and reduces quiescent current to 0.1 µA. |
| 4 - FB | Feedback Input | Internally connected to fixed 2.3-V divider; left unconnected in fixed-output versions - no external resistor network needed. |
| 5 - SW | Switch Node | Drives external 4.7-µH inductor; carries high di/dt pulses - requires short, wide trace and tight layout to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Output-Voltage Positioning | Maintains output 0.8% above nominal (2.318 V) at light load to absorb transient droop during sudden load steps - enables use of only 10-µF output capacitance. |
| 100% Duty-Cycle Low-Dropout Mode | Operates with P-channel switch fully on when VI approaches VO - extends usable battery voltage down to ~2.45 V at 400 mA (rDS(on)-limited). |
| Digital Self-Calibration | Adjusts duty cycle in 1%-of-VO digital steps when output deviates >±1.6% - achieves near-zero DC line/load regulation without external compensation. |
| Soft-Start Ramp | Digitally controlled current limit ramp (83 → 167 → 335 → 670 mA) - prevents input rail collapse during startup from weak sources like coin cells or aging batteries. |
| Undervoltage Lockout (UVLO) | Turns off converter below 1.5–2.0 V input - avoids erratic operation and MOSFET shoot-through during brownout conditions. |
Applications
| Smartphone Application Processor Core Supply | PDA Memory Interface Power Rail |
|---|---|
Use Scenario: Powers ARM-based application processor cores requiring stable 2.3-V supply with fast transient response during burst-mode execution. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated 2.3 V at up to 400 mA with <100-µs load-step recovery. Use Value: Dynamic voltage positioning and 1.25-MHz switching enable sub-50-mV droop under 300-mA load steps - eliminating need for oversized output caps. |
Use Scenario: Supplies DDR SDRAM I/O interface in pocket PC platforms where space and battery life are constrained. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter providing clean, low-noise 2.3-V rail with minimal board area footprint. Use Value: 15-µA quiescent current in PFM mode extends standby time; TSOT23-5 package saves >50% PCB area vs. SOIC alternatives. |
| Digital Camera Image Sensor Bias Rail | WLAN PC Card Baseband IC Supply |
Use Scenario: Generates low-noise 2.3-V bias for CMOS image sensor analog front-end in compact camera modules. IC Role / Device Role / Timing Role: High-efficiency step-down regulator with soft-start and UVLO - prevents sensor reset during battery insertion or voltage sag. Use Value: 95% peak efficiency minimizes self-heating near temperature-sensitive optics; 2.5–6-V input accommodates both Li-Ion and USB-powered operation. |
Use Scenario: Powers baseband processor and RF transceiver ICs in mini-PCI WLAN cards with strict thermal and size limits. IC Role / Device Role / Timing Role: Compact, high-frequency buck converter enabling dense component placement and low-profile heatsinking. Use Value: TSOT23-5 footprint and 1.25-MHz operation allow integration of full power stage within 8 mm² - meeting mini-PCI mechanical constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62222DDCR | Fixed 1.8-V output; identical package, pinout, and control architecture. | Targets 1.8-V logic families (e.g., older OMAP processors); lower output requires different output capacitor derating per datasheet Table 1. | Select when system requires 1.8-V rail instead of 2.3 V - no layout change needed, but verify load regulation and transient behavior at lower VO. |
| TPS62225DDCR | Fixed 2.2-V output; same 1.25-MHz switching, 400-mA rating, and TSOT23-5 package. | Suitable for 2.2-V FPGA I/O banks or specific ASIC voltage domains; 100-mV lower VO reduces dropout margin at low VI. | Choose for tighter 2.2-V tolerance requirements; validate low-VI operation (e.g., 2.5-V start) against rDS(on) and dropout curves. |
Compared with TPS62223DDCR, TPS62222DDCR delivers 0.5 V less output - advantageous for legacy 1.8-V logic but requiring revalidation of load transient headroom; TPS62225DDCR offers 0.1 V lower output with nearly identical performance, making it a closer functional match for 2.2–2.3-V domain migration.
Availability
TPS62223DDCR is available at Aetrix Electronics and suitable for smartphone power management, portable media player subsystems, and WLAN PC card designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62223DDCR 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 for portable electronics.
The TPS6222x product line was engineered specifically for space- and battery-constrained portable systems - delivering high-frequency, high-efficiency synchronous buck regulation in ultra-small packages without compromising transient response or thermal performance.
FAQ
What is the output voltage tolerance of the TPS62223DDCR over temperature and load?
The TPS62223DDCR maintains a fixed 2.3-V output with ±3% tolerance across the full operating ambient temperature range (−40°C to +85°C) and full load range (0–400 mA), as verified under VI = 2.5–6 V conditions per the SLVS491E datasheet Electrical Characteristics table. This specification includes both initial accuracy and drift due to line, load, and temperature variation - no external calibration is required.
Does the TPS62223DDCR require external feedback resistors?
No, the TPS62223DDCR does not require external feedback resistors. It is the fixed-output variant (2.3 V) in the TPS6222x family and uses an internally trimmed resistor divider referenced to the 0.5-V bandgap. The FB pin is internally connected and must be left unconnected - unlike the adjustable TPS62220, which requires external R1/R2.
What is the minimum input voltage required for regulation at 400 mA output with the TPS62223DDCR?
Based on the low-dropout 100% duty-cycle operation and maximum P-channel rDS(on) of 850 mΩ at 2.5 V, the minimum input voltage for regulation at 400 mA is approximately 2.45 V. This accounts for VO (2.3 V), IO × rDS(on) (0.4 A × 0.85 Ω = 0.34 V), and inductor DCR - consistent with the device's ability to operate down to 2.5 V nominal input.
Can the TPS62223DDCR be used with a 4.7-µH inductor and 10-µF output capacitor?
Yes, the TPS62223DDCR is validated for use with a 4.7-µH inductor and 10-µF ceramic output capacitor - especially for output voltages >2 V per Table 1 in the datasheet. This combination supports stable operation with dynamic voltage positioning and meets ESR/ESL requirements for fast transient response in portable applications.
How does the TPS62223DDCR enter and exit power-save mode?
The TPS62223DDCR automatically enters power-save mode (PFM) when load current drops below ~66 mA, detected via discontinuous conduction or P-channel peak current falling below the skip threshold. It exits PFM and resumes 1.25-MHz PWM when output voltage falls below the "Comp Low 2" threshold (~0.8% below nominal), ensuring seamless transition without output glitches.
TPS62223DDCR 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
TPS62223DDCR FAQ
1.How can I place an order for TPS62223DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62223DDCR 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 TPS62223DDCR reliable?
The price and inventory of TPS62223DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62223DDCR is usually 5 days.
3.What payment methods are accepted for TPS62223DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62223DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62223DDCR?
TPS62223DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62223DDCR 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 TPS62223DDCR?
For technical support, including TPS62223DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62223DDCR requirements.
6.How does Aetrix verify that TPS62223DDCR is sourced from the original manufacturer or authorized distributors?
All TPS62223DDCR 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 TPS62223DDCR meets industry standards.
7.What is the process for return or replacement of TPS62223DDCR?
All TPS62223DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62223DDCR, 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 TPS62223DDCR part is unused and in its original packaging.
Return procedure for TPS62223DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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