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Texas Instruments TPS62353YZGT
- Part No.:
- TPS62353YZGT
- Manufacturer:
- Texas Instruments
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS62353YZGT.pdf
- Description:
- IC REG BUCK ADJ 800MA 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:127
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Product details
Overview
TPS62353YZGT from Texas Instruments is a 3-MHz synchronous step-down DC-DC converter with I²C-compatible interface, delivering up to 800 mA output current at 2.7 V input, ±2% PWM DC voltage accuracy, and 35-ns minimum on-time. It supports dynamic voltage scaling down to 0.6 V and operates in Light PFM, Fast PFM, or Forced PWM modes for mobile phone core power applications.
For engineers reviewing the TPS62353YZGT datasheet, TPS62353YZGT pinout, TPS62353YZGT application, or TPS62353YZGT equivalent, key selection considerations include its 12-pin NanoFree™ CSP package, I²C programmability up to 3.4 Mbps, 28-µA quiescent current in Light PFM mode, and SmartReflex™ compliance for adaptive power management in battery-powered handheld devices.
Technical Context
The TPS62353YZGT integrates a 6-bit DAC for precise output voltage control via I²C, enabling 12.5-mV voltage steps across its 0.75 V to 1.5375 V range. Its dual-mode power-save architecture dynamically switches between Light PFM (efficiency-optimized) and Fast PFM (transient-optimized) based on load conditions.
Internally, it features synchronized P- and N-channel MOSFETs with typical rDS(on) of 250 mΩ (P) and 150 mΩ (N) at 3.6 V, a 3-MHz fixed-frequency oscillator with ±10% tolerance, and thermal shutdown at 150°C with 20°C hysteresis - all optimized for single-cell Li-Ion systems requiring minimal board area and high light-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.7 V to 5.5 V - supports full discharge curve of single-cell Li-Ion batteries without dropout. |
| Output voltage range | 0.75 V to 1.5375 V - programmable in 12.5-mV steps via 6-bit DAC for DSP/processor core rail tuning. |
| Max output current | 800 mA - sufficient for low-power ARM cores and baseband processors in smartphones and PDAs. |
| Switching frequency | 3 MHz (±10%) - enables use of sub-2.2 µH inductors and 10-µF ceramic capacitors for ultra-thin designs. |
| Quiescent current | 28 µA in Light PFM mode - extends battery life during standby/sleep states in always-on mobile devices. |
| I²C interface speed | Up to 3.4 Mbps (High-Speed mode) - allows rapid dynamic voltage scaling during CPU frequency transitions. |
| DC output accuracy | ±2% in PWM mode - ensures stable core voltage under varying line/load conditions for reliable digital logic operation. |
Pinout & Package
TPS62353YZGT is packaged in a 12-pin NanoFree™ chip-scale package (CSP-12), measuring 1.5 mm × 1.5 mm with 0.4-mm pitch, offering minimal footprint and thermal resistance (θJA = 89°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Power input for output stage | Connects directly to high-current input capacitor; separates power and analog supply paths. |
| AVIN | Analog input supply | Bias source for internal regulators and reference; must be decoupled locally to minimize noise coupling. |
| EN | Enable control input | Active-high logic input; rising edge resets all registers to defaults and initiates soft-start sequence. |
| VSEL | Mode select / voltage scale input | Hardware-selectable active/sleep mode; complements I²C control for fast power-state transitions. |
| SDA | I²C bidirectional data line | Open-drain interface supporting Standard/Fast/High-Speed I²C protocols up to 3.4 Mbps. |
| SCL | I²C clock input | Drives internal timing for register reads/writes; requires external pull-up resistor per I²C spec. |
| FB | Feedback sense input | High-impedance (700–1000 kΩ) input monitoring output voltage; connects directly to regulated rail. |
| AGND | Analog ground reference | Separate ground for precision circuitry; must be tied to PGND under IC to avoid ground loops. |
| PGND | Power ground return | Low-impedance path for switch node current; connected internally to PowerPAD™ for thermal conduction. |
| SW | Switch node output | Drain connection of internal P/N-MOSFET pair; drives external inductor and defines switching waveform. |
| SYNC | External clock synchronization input | Allows frequency alignment to system clock for EMI reduction; no effect when held static. |
Key Features
| Feature | Design Value |
|---|---|
| SmartReflex™ compliance | Enables closed-loop adaptive voltage scaling with OMAP™/XSCALE™ processors for real-time power optimization. |
| Split-supply support | Independent PVIN/AVIN rails allow separate battery and LDO inputs, improving PSRR and noise isolation. |
| Transient-optimized PFM mode | Fast PFM reduces output voltage droop during sudden load steps (e.g., RF transmit bursts) without sacrificing efficiency. |
| On-the-fly synchronization | SYNC pin accepts external clock signals while operating, enabling seamless EMI spread-spectrum integration. |
| 1-mm component profile | Full solution height ≤1 mm with 1-µH inductor and 10-µF MLCCs - meets mechanical constraints of slim smartphones. |
Applications
| Mobile Phone Core Power | Smartphone DSP Supply |
|---|---|
Use Scenario: Powering ARM Cortex-A8/A9 application processor cores in LTE smartphones during burst-mode operation. IC Role / Device Role / Timing Role: Primary buck regulator delivering dynamically scaled core voltage (0.9–1.35 V) via I²C commands synchronized to CPU frequency changes. Use Value: 88% efficiency at 3 MHz and 28 µA quiescent current extend talk time by >12% versus legacy 1-MHz converters in same footprint. | Use Scenario: Supplying TI C64x+ DSP voltage rails in portable multimedia devices with real-time video encoding. IC Role / Device Role / Timing Role: Low-noise, fast-transient buck converter supporting 12.5-mV voltage steps for adaptive algorithm performance/power trade-offs. Use Value: 35-ns minimum on-time enables stable 0.75-V output at 3-MHz switching, critical for sub-1V DSP core operation. |
| PDA Baseband Processor | Digital Camera Image Sensor Bias |
Use Scenario: Regulating voltage for Qualcomm MSM baseband processors in Windows Mobile PDAs with aggressive sleep/wake cycles. IC Role / Device Role / Timing Role: Dual-mode (Light PFM/Fast PFM) DC-DC converter responding to EN and VSEL hardware signals for millisecond-level state transitions. Use Value: 2 µA shutdown current and automatic mode switching reduce average system power by 35% during idle periods. | Use Scenario: Providing clean, adjustable bias voltage to CMOS image sensor analog front-end in compact digital cameras. IC Role / Device Role / Timing Role: Precision buck converter with ±2% DC accuracy and <30 mVPP ripple in Light PFM mode for analog signal integrity. Use Value: 12-pin CSP package and integrated power-save logic eliminate need for external sequencing controllers, saving 22 mm² PCB area. |
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 |
|---|---|---|---|
| TPS62352YZG | Default output voltage 1.20 V (vs. 1.00 V for TPS62353); identical I²C interface, package, and feature set. | Optimized for 1.2-V core rails in older OMAP platforms; narrower max output range (0.75–1.4375 V). | Select when fixed 1.2-V default simplifies initialization or matches legacy reference designs. |
| TPS62354YZG | Default output voltage 1.30 V; otherwise pin-, package-, and functionally identical to TPS62353YZGT. | Targeted at newer 1.3-V DSP cores requiring tighter regulation margin; same 0.75–1.5375 V programmable range. | Choose for systems where higher default voltage reduces boot-time configuration overhead. |
Compared with TPS62352YZG and TPS62354YZG, the TPS62353YZGT offers the lowest default output voltage (1.00 V) within the shared 0.75–1.5375 V range, making it optimal for ultra-low-voltage ARM cores where minimizing static power dominates design priorities.
Availability
TPS62353YZGT is available at Aetrix Electronics and suitable for smartphone core power, PDA baseband regulation, and digital camera image sensor bias applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62353YZGT 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 ICs for portable electronics.
The TPS6235x family was designed specifically for battery-powered handheld devices requiring high-efficiency, ultra-small-footprint DC-DC conversion with intelligent voltage scaling - targeting OMAP™, XSCALE™, and other low-voltage processor platforms.
FAQ
What is the default output voltage of the TPS62353YZGT?
The TPS62353YZGT has a factory-default output voltage of 1.00 V, programmable via I²C interface across a 0.75 V to 1.5375 V range in 12.5-mV steps. This default is set by internal register values (VSEL0/VSEL1 bits) and remains active until overwritten by host controller commands.
Does the TPS62353YZGT support external clock synchronization?
Yes, the TPS62353YZGT supports on-the-fly synchronization to an external clock signal through its dedicated SYNC pin, accepting frequencies from 2.65 MHz to 3.35 MHz. This capability enables EMI reduction by aligning switching edges with system clocks without interrupting regulation.
What package type is used for the TPS62353YZGT?
The TPS62353YZGT uses a 12-pin NanoFree™ chip-scale package (CSP-12), measuring 1.5 mm × 1.5 mm with 0.4-mm ball pitch. This package provides minimal PCB footprint and thermal resistance (θJA = 89°C/W), ideal for space-constrained mobile designs.
How does the TPS62353YZGT manage efficiency at light loads?
The TPS62353YZGT employs two power-save modes: Light PFM for peak efficiency (28 µA quiescent current) and Fast PFM for improved transient response. Mode selection is controlled via I²C or hardware VSEL pin, allowing dynamic adaptation to load conditions without sacrificing regulation accuracy.
Is the TPS62353YZGT compatible with SmartReflex™ technology?
Yes, the TPS62353YZGT is explicitly designed to be SmartReflex™ compliant, enabling seamless integration with TI OMAP™ processors for closed-loop adaptive voltage and frequency scaling. Its I²C interface and programmable voltage steps meet SmartReflex™ Level 3 requirements for real-time power optimization.
TPS62353YZGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.75V (1V, 1.2V)
- Voltage - Output (Max):
- 1.54V
- Current - Output:
- 800mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DSBGA
TPS62353YZGT FAQ
1.How can I place an order for TPS62353YZGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62353YZGT 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 TPS62353YZGT reliable?
The price and inventory of TPS62353YZGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62353YZGT is usually 5 days.
3.What payment methods are accepted for TPS62353YZGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62353YZGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62353YZGT?
TPS62353YZGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62353YZGT 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 TPS62353YZGT?
For technical support, including TPS62353YZGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62353YZGT requirements.
6.How does Aetrix verify that TPS62353YZGT is sourced from the original manufacturer or authorized distributors?
All TPS62353YZGT 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 TPS62353YZGT meets industry standards.
7.What is the process for return or replacement of TPS62353YZGT?
All TPS62353YZGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62353YZGT, 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 TPS62353YZGT part is unused and in its original packaging.
Return procedure for TPS62353YZGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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