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Texas Instruments TPS62262DDCT
- Part No.:
- TPS62262DDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62262DDCT.pdf
- Description:
- IC REG BUCK 1.2V 600MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:731
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Product details
Overview
TPS62262DDCT from Texas Instruments is a fixed-output 1.2-V, 600-mA synchronous step-down DC/DC converter in SOT-23-5 package, operating at 2.25-MHz fixed switching frequency with power-save mode for high efficiency across light-to-heavy loads, used in portable Li-ion–powered systems such as smartphones and portable media players.
For engineers reviewing the TPS62262DDCT datasheet, TPS62262DDCT pinout, TPS62262DDCT application, or TPS62262DDCT equivalent, key selection criteria include input voltage range (2 V to 6 V), quiescent current (15 μA in PFM mode), output voltage accuracy (±1.5% in PWM mode), thermal shutdown threshold (140°C), and MODE pin–enabled PWM/PSM mode control.
Technical Context
The TPS62262DDCT uses voltage-mode control with input-voltage feed-forward for fast line/load regulation and supports automatic transition between 2.25-MHz PWM and pulse-frequency modulation (PFM) modes based on load. Its internal 0.6-V reference and fixed 1.2-V output eliminate external feedback resistors.
It integrates high-side (480 mΩ max RDS(on)) and low-side (380 mΩ max RDS(on)) MOSFETs, features dynamic voltage positioning (+1% during light loads), 100% duty-cycle operation near dropout, and undervoltage lockout (1.85 V falling threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1.5% in PWM mode - eliminates need for external resistor divider and simplifies layout. |
| Max Output Current | 600 mA at VIN ≥ 2.5 V - supports core logic rails in mobile SoCs and DSPs. |
| Input Voltage Range | 2 V to 6 V - compatible with single-cell Li-ion (2.7–4.2 V), two/three-cell alkaline, and 3.3/5-V rails. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of small 2.2-μH inductors and 10-μF ceramic output capacitors. |
| Quiescent Current | 15 μA (PFM mode, no switching) - extends battery life in standby and low-power states. |
| Shutdown Current | 0.1–1 μA - ensures minimal battery drain when EN = GND. |
| Thermal Shutdown | 140°C (typical), 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
SOT-23-5 (DDC) package: 2.90 mm × 1.60 mm footprint, 1.1-mm height, thermally enhanced padless construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2–6 V; must be decoupled with ≥4.7-μF ceramic capacitor close to pin. |
| GND | Ground reference | Primary return path for power and control circuits; connects to PCB ground plane. |
| EN | Enable control | Active-high logic; pull high to enable, low to enter <1-μA shutdown state. |
| FB | Feedback input | Internally connected to 1.2-V output; no external resistor network required. |
| SW | Switch node | Connects to inductor; carries high di/dt; requires tight loop routing to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains +1% output offset in PFM mode to reduce load-step undershoot/overshoot without external compensation. |
| 100% Duty-Cycle Operation | Extends usable battery range by sustaining regulation down to VIN ≈ VOUT + IOUT×(RDS(on)+RL). |
| Integrated Power MOSFETs | Eliminates external high/low-side switches; reduces BOM count and layout complexity. |
| Soft-Start Ramp | 250-μs 5%→95% VOUT ramp limits inrush current and prevents input rail collapse. |
| Undervoltage Lockout | Disables regulator below 1.85 V (falling) to prevent brownout operation and excessive battery discharge. |
Applications
| Mobile Phone Core Rail | Portable Media Player DSP Supply |
|---|---|
Use Scenario: Powers application processor core voltage (e.g., ARM Cortex-A series) in compact smartphone designs with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 1.2-V supply with fast transient response to CPU load changes. Use Value: 2.25-MHz switching enables sub-3-mm² solution size; 15-μA quiescent current extends standby time beyond 72 hours. | Use Scenario: Supplies low-noise 1.2-V rail to audio DSP in flash-based MP3 players with alkaline battery input. IC Role / Device Role / Timing Role: Efficient POL converter supporting burst-mode audio decoding while minimizing battery drain. Use Value: Dynamic voltage positioning reduces output deviation to <12 mV during 100-mA load steps, preserving audio fidelity. |
| Point-of-Load for Wearable Sensors | Low-Power IoT Microcontroller Rail |
Use Scenario: Provides regulated 1.2-V supply to MEMS inertial sensors and BLE radio in compact wearable fitness trackers. IC Role / Device Role / Timing Role: Compact, low-quiescent regulator enabling always-on sensor fusion with minimal thermal impact. Use Value: SOT-23-5 footprint fits within 5-mm² board area; 100% duty cycle sustains operation until battery drops to 1.25 V. | Use Scenario: Powers ultra-low-power microcontrollers (e.g., MSP430, nRF52) in battery-operated smart sensors with multi-year lifetime requirements. IC Role / Device Role / Timing Role: High-efficiency buck converter optimized for intermittent active/sleep cycles. Use Value: 0.1–1 μA shutdown current prevents >0.5% annual battery loss; PFM mode maintains >85% efficiency at 100-μA loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62262DRV | Same electrical specs but in 2×2-mm WSON-6 package with MODE pin; adds forced-PWM capability. | Requires PCB redesign for 6-pin WSON footprint and MODE signal routing. | Select when fixed-frequency operation under light load is mandatory for EMI-sensitive systems. |
| TPS62231DRC | 1.2-V fixed, 300-mA output, 3-MHz switching, 17-μA IQ; smaller 2×2-mm WSON-6 package. | Lower current rating limits use to sub-300-mA MCU cores or peripherals. | Select when board space is constrained and 300-mA peak load suffices, e.g., Bluetooth LE modules. |
Compared with TPS62262DRV, the TPS62262DDCT saves board area with SOT-23-5 but lacks MODE control; compared with TPS62231DRC, it delivers double the output current at slightly lower switching frequency-making it optimal for 1.2-V, 600-mA portable rails where thermal headroom and transient robustness are critical.
Availability
TPS62262DDCT is available at Aetrix Electronics and suitable for mobile phones, portable media players, and point-of-load applications requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for TPS62262DDCT 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, specializing in analog and embedded processing technologies with broad industrial, automotive, and consumer product portfolios.
The TPS6226x family was designed specifically for space-constrained, battery-powered portable electronics requiring high efficiency across wide load ranges and minimal external components-enabling <1-mm solution height with standard 0603 passives.
FAQ
What is the output voltage tolerance of the TPS62262DDCT in PWM mode?
The TPS62262DDCT has an output voltage tolerance of ±1.5% in PWM mode over temperature (–40°C to 85°C), input voltage (2.5 V to 6 V), and load (0 mA to 600 mA). This specification is guaranteed per TI's SLVS763E datasheet Section 7.5, and applies to the fixed 1.2-V output version. The TPS62262DDCT does not require external feedback resistors due to its internal precision voltage divider.
Does the TPS62262DDCT support forced PWM mode?
No, the TPS62262DDCT does not support forced PWM mode because it uses the DDC (SOT-23-5) package, which omits the MODE pin. Only the DRV (WSON-6) variants-such as TPS62262DRV-include the MODE pin for forcing fixed-frequency operation. The TPS62262DDCT automatically transitions between PWM and PFM modes based on load current, optimizing efficiency without external control.
What is the minimum input voltage required for the TPS62262DDCT to maintain 1.2-V regulation at 600 mA?
The minimum input voltage for the TPS62262DDCT to sustain 1.2-V output at 600 mA is calculated as VINmin = VOUT + IOUT × (RDS(on)HIGH + RL). Using max RDS(on) = 480 mΩ and typical inductor DCR = 110 mΩ, VINmin ≈ 1.2 V + 0.6 A × 0.59 Ω = 1.554 V. However, due to undervoltage lockout (1.85 V falling threshold), practical minimum VIN is 1.95 V. The TPS62262DDCT enters 100% duty cycle below ~1.8 V but will shut down before reaching that point.
Can the TPS62262DDCT be used with a 2.2-μH inductor and 10-μF output capacitor?
Yes, the TPS62262DDCT is explicitly optimized for use with a 2.2-μH inductor and 10-μF ceramic output capacitor, as confirmed in TI's SLVS763E datasheet Section 9.2.2.2. This combination achieves stable operation, low output ripple (<15 mVPP), and optimal transient response. The device supports inductor values from 1.5 μH to 4.7 μH and output capacitance from 4.7 μF to 22 μF, but deviating from the 2.2-μH/10-μF pair may require re-evaluation of stability and ripple performance.
What thermal considerations apply to the TPS62262DDCT in SOT-23-5 package?
The TPS62262DDCT in SOT-23-5 (DDC) package has a junction-to-ambient thermal resistance (RθJA) of 226.9°C/W, significantly higher than the WSON-6 variant (67.8°C/W). To maintain safe operation at 600 mA continuous load, the PCB must provide adequate copper area (≥250 mm² of 1-oz inner/outer layer copper connected to GND pins) and avoid enclosure-level ambient temperatures above 60°C. Thermal shutdown triggers at 140°C junction temperature, with 20°C hysteresis-so derating is essential for sustained high-current operation.
TPS62262DDCT 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):
- 2V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- 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
TPS62262DDCT FAQ
1.How can I place an order for TPS62262DDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62262DDCT 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 TPS62262DDCT reliable?
The price and inventory of TPS62262DDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62262DDCT is usually 5 days.
3.What payment methods are accepted for TPS62262DDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62262DDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62262DDCT?
TPS62262DDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62262DDCT 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 TPS62262DDCT?
For technical support, including TPS62262DDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62262DDCT requirements.
6.How does Aetrix verify that TPS62262DDCT is sourced from the original manufacturer or authorized distributors?
All TPS62262DDCT 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 TPS62262DDCT meets industry standards.
7.What is the process for return or replacement of TPS62262DDCT?
All TPS62262DDCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62262DDCT, 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 TPS62262DDCT part is unused and in its original packaging.
Return procedure for TPS62262DDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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