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Texas Instruments TPS62354YZGT
- Part No.:
- TPS62354YZGT
- Manufacturer:
- Texas Instruments
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS62354YZGT.pdf
- Description:
- IC REG BUCK ADJ 800MA 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
TPS62354YZGT from Texas Instruments is a 3-MHz synchronous step-down DC-DC converter with I²C-compatible interface in NanoFree™ CSP-12 packaging, delivering up to 800 mA output current at 2.7 V input, ±2% PWM DC voltage accuracy, and 88% efficiency at full switching frequency - optimized for core power in smartphones and low-voltage DSPs.
For engineers reviewing the TPS62354YZGT datasheet, TPS62354YZGT pinout, TPS62354YZGT application, or TPS62354YZGT equivalent, key selection criteria include I²C-programmable output voltage (0.75–1.5375 V), 35-ns minimum on-time, 28-µA quiescent current in Light PFM mode, thermal shutdown at 150°C, and support for dynamic voltage scaling in battery-powered portable systems.
Technical Context
The TPS62354YZGT integrates a 6-bit DAC, dual MOSFET power stage (P-channel rDS(on) = 320–500 mΩ, N-channel rDS(on) = 150–350 mΩ), and PLL-based 3-MHz oscillator with synchronization capability. It supports three operating modes - Light PFM, Fast PFM, and Forced PWM - selected via I²C or VSEL pin.
Its feedback architecture uses a 0.4-V internal reference and high-impedance FB pin (700–1000 kΩ), enabling precise regulation across load (0–800 mA) and line (2.7–5.5 V) variations. The device enters shutdown (<2 µA) when EN is pulled low and features built-in discharge resistor (15–50 Ω) for controlled power-down sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion battery operation without external pre-regulation. |
| Output Voltage Range | 0.75 V to 1.5375 V - programmable in 12.5-mV steps via I²C for dynamic voltage scaling of processors. |
| Switching Frequency | Fixed 3 MHz (±0.35 MHz) - enables use of ultra-small 1-µH inductors and 10-µF ceramic capacitors. |
| Max Output Current | 800 mA - sustained at VI = 2.7 V, sufficient for DSP core rails in space-constrained handheld devices. |
| DC Voltage Accuracy | ±2% in PWM mode - ensures stable core supply under varying load and temperature conditions. |
| Quiescent Current | 28 µA typical in Light PFM - extends battery life during light-load standby states. |
| I²C Speed Support | Up to 3.4 Mbps (High-Speed mode) - enables rapid voltage reconfiguration during processor DVFS transitions. |
Pinout & Package
TPS62354YZGT is packaged in a 12-ball NanoFree™ CSP (Chip Scale Package) measuring 1.5 mm × 1.5 mm × 0.55 mm, with bottom-side ball layout matching JEDEC MO-220 standard. Thermal performance is characterized with θJA = 89°C/W on a 4-layer high-K board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Power input for high-side switch | Connects directly to input bypass capacitor; handles peak switching currents. |
| AVIN | Analog input supply | Provides clean bias for control circuitry; must be decoupled locally. |
| EN | Enable control input | Rising edge resets registers; floating not allowed - requires pull-up or active drive. |
| VSEL | Mode select / voltage scale input | Hardware-selectable between active/sleep modes; complements I²C control. |
| SDA | I²C bidirectional data line | Open-drain interface supporting Fast/Standard/High-Speed I²C protocols. |
| SCL | I²C clock input | Accepts up to 3.4 MHz clock; timing compliant with Philips I²C specification. |
| FB | Feedback sense input | High-impedance (700–1000 kΩ) node referenced to 0.4-V internal bandgap. |
| AGND | Analog ground reference | Separate from PGND to minimize noise coupling into sensitive analog blocks. |
| PGND | Power ground return | Low-inductance path for switch node current; internally connected to PowerPAD™. |
| SW | Switch node output | Drives external inductor; requires tight layout to minimize EMI and ringing. |
| SYNC | External clock sync input | Allows synchronization to system clock source; no effect when held static. |
| NC | No-connect | Ball B2 is unused - no internal connection; may be left unpopulated or grounded. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-compatible interface | Enables real-time dynamic voltage scaling down to 12.5-mV steps for OMAP™/XSCALE™ processors. |
| Split-mode power-save operation | Light PFM (28 µA IQ) and Fast PFM modes optimize efficiency across 1 µA–800 mA load range. |
| 35-ns minimum on-time | Supports high VIN-to-VOUT conversion ratios (e.g., 5.5 V → 0.75 V) without pulse-skipping artifacts. |
| SmartReflex™ compliance | Meets TI's SmartReflex Class 3 requirements for adaptive power management in mobile SoCs. |
| Thermal shutdown with hysteresis | Shuts down at 150°C and resumes at 130°C, preventing thermal runaway in compact enclosures. |
Applications
| Mobile Application Processor Core Supply | Low-Power DSP Voltage Rail |
|---|---|
Use Scenario: Powering ARM Cortex-A8 core in smartphone SoC during DVFS transitions. IC Role / Device Role / Timing Role: Primary buck regulator delivering dynamically scaled voltage (0.75–1.35 V) via I²C commands synchronized to CPU clock. Use Value: Enables >20% reduction in active power consumption by matching supply voltage precisely to processing load. | Use Scenario: Supplying TI C55x DSP core in portable audio recorder with battery runtime optimization. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter operating in Light PFM mode during idle periods. Use Value: Achieves 88% efficiency at 1 mA load, extending battery life beyond 10 hours in record-and-playback cycles. |
| OMAP™ Platform Power Management | Handheld Computer System-on-Chip Rail |
Use Scenario: Regulating core voltage for OMAP3530 in industrial PDA with thermal constraints. IC Role / Device Role / Timing Role: SmartReflex-compliant power supply responding to AVS signals over I²C bus. Use Value: Maintains ±2% output accuracy across –40°C to 85°C ambient while limiting junction temperature to 125°C. | Use Scenario: Generating 1.30-V core rail for Intel XScale PXA270 in ruggedized handheld terminal. IC Role / Device Role / Timing Role: Synchronous buck converter with 3-MHz fixed-frequency operation and SYNC pin tied to system clock. Use Value: Eliminates beat frequencies with other system clocks, reducing conducted EMI in FCC-certified enclosure. |
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 |
|---|---|---|---|
| TPS62353YZG | Default output voltage 1.00 V (vs. 1.05 V); identical I²C interface, package, and electrical specs. | Targeted for lower-voltage DSP cores requiring tighter margin at 1.0 V nominal. | Select when default 1.00-V startup aligns with SoC boot requirements without I²C initialization delay. |
| TPS62352YZG | Default output voltage 1.05 V but max output range capped at 1.4375 V (vs. 1.5375 V); same CSP-12 footprint. | Suitable for applications where upper voltage limit must stay below 1.44 V for peripheral compatibility. | Choose when system-level voltage margin restricts maximum regulated output to ≤1.44 V. |
Compared with TPS62353YZG and TPS62352YZG, the TPS62354YZGT offers identical thermal and electrical performance but provides the widest programmable output range (0.75–1.5375 V) and factory-default 1.05-V/1.30-V dual-setting configuration - making it optimal for multi-core SoCs requiring flexible post-boot voltage tuning.
Availability
TPS62354YZGT is available at Aetrix Electronics and suitable for smartphone power management, handheld computer SoC rails, and portable DSP voltage regulation requiring stable component supply across high-volume production cycles.
Supply support for TPS62354YZGT 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 for industrial, automotive, and consumer markets.
The TPS6235x family was designed specifically for battery-powered portable electronics, delivering high-efficiency, ultra-small-footprint DC-DC conversion with digital voltage control for next-generation mobile processors.
FAQ
What is the default output voltage of the TPS62354YZGT?
The TPS62354YZGT has a factory-programmed default output voltage of 1.05 V upon power-up or EN assertion, with a secondary selectable setting of 1.30 V. Both values are stored in nonvolatile register bits and can be modified in real time via its I²C interface. This dual-default configuration simplifies boot sequencing for multi-rail SoCs without requiring external configuration hardware.
Does the TPS62354YZGT support external clock synchronization?
Yes, the TPS62354YZGT supports external clock synchronization via the SYNC pin, which accepts an external clock signal in the 2.65–3.35 MHz range. When enabled, the internal 3-MHz oscillator locks to the external source, eliminating switching frequency beat notes in multi-rail systems. The SYNC pin must not be left floating and has no effect when held static high or low.
What is the minimum on-time specification for the TPS62354YZGT?
The TPS62354YZGT specifies a minimum on-time of 35 ns, enabling high step-down ratios (e.g., 5.5 V input to 0.75 V output) without pulse-skipping instability. This parameter is critical for maintaining regulation during light loads and fast transient recovery, especially when paired with small 1-µH inductors in space-constrained layouts.
How does the TPS62354YZGT manage power-save modes?
The TPS62354YZGT implements two distinct power-save modes: Light PFM (28 µA quiescent current) for ultra-low-load conditions and Fast PFM for improved transient response. Mode selection is configurable via I²C register CONTROL1[4:2] or hardware pin VSEL, allowing seamless transition between efficiency- and performance-optimized operation without interrupting output regulation.
Is the TPS62354YZGT compatible with SmartReflex™ power management?
Yes, the TPS62354YZGT is explicitly designed to meet SmartReflex™ Class 3 compliance, supporting adaptive voltage scaling (AVS) for OMAP™ and other TI SoCs. Its I²C interface allows direct integration with SmartReflex host controllers, enabling closed-loop voltage adjustment based on real-time process, voltage, and temperature (PVT) monitoring.
TPS62354YZGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 (1.05V, 1.3V)
- 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
TPS62354YZGT FAQ
1.How can I place an order for TPS62354YZGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62354YZGT 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 TPS62354YZGT reliable?
The price and inventory of TPS62354YZGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62354YZGT is usually 5 days.
3.What payment methods are accepted for TPS62354YZGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62354YZGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62354YZGT?
TPS62354YZGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62354YZGT 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 TPS62354YZGT?
For technical support, including TPS62354YZGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62354YZGT requirements.
6.How does Aetrix verify that TPS62354YZGT is sourced from the original manufacturer or authorized distributors?
All TPS62354YZGT 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 TPS62354YZGT meets industry standards.
7.What is the process for return or replacement of TPS62354YZGT?
All TPS62354YZGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62354YZGT, 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 TPS62354YZGT part is unused and in its original packaging.
Return procedure for TPS62354YZGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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