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Texas Instruments TPS62354YZGR
- Part No.:
- TPS62354YZGR
- Manufacturer:
- Texas Instruments
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS62354YZGR.pdf
- Description:
- IC REG BUCK ADJ 800MA 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,932
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Product details
Overview
TPS62354YZGR 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 supplies.
For engineers reviewing the TPS62354YZGR datasheet, TPS62354YZGR pinout, TPS62354YZGR application, or TPS62354YZGR equivalent, key selection criteria include I²C programmability (up to 3.4 Mbps), 10-pin QFN (3×3 mm) package, SmartReflex™ compliance, and dual power-save mode optimization for battery-powered portable systems.
Technical Context
The TPS62354YZGR integrates a 6-bit DAC for I²C-controlled output voltage adjustment in 12.5-mV steps across a 0.75–1.5375-V range, with default factory-set output of 1.05 V. Its 3-MHz fixed-frequency PWM operation enables use of ultra-small 1-µH inductors and 10-µF ceramic capacitors.
It features dual power-save modes-Light PFM for ultra-low quiescent current (28 µA typical) and Fast PFM for improved transient response-plus synchronizable switching via external clock on SYNC pin, thermal shutdown at 150°C, and undervoltage lockout at 2.3 V.
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 pre-regulation. |
| Output Current | 800 mA - sufficient for low-power DSP/processor cores in smartphones and PDAs. |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables compact passive component selection and high PSRR. |
| Output Voltage Accuracy | ±2% in PWM mode - ensures stable core voltage under load and line variation. |
| I²C Interface Speed | Up to 3.4 Mbps (High-Speed mode) - enables fast dynamic voltage scaling during processor state transitions. |
| Quiescent Current | 28 µA typical in Light PFM - extends battery life in standby/sleep states. |
| Minimum On-Time | 35 ns - supports high step-down ratios (e.g., 3.6 V → 0.75 V) at 3 MHz without pulse-skipping. |
Pinout & Package
TPS62354YZGR is packaged in a 10-pin QFN (3 mm × 3 mm, 0.5-mm pitch) with exposed PowerPAD™ thermally connected to PGND. Pin 1 is PVIN; pin 10 is SW; pins 9 and A1/B1 are PGND; pin 8 is AGND; pin 7 is EN; pin 5 is VSEL; pins 3 and 4 are SDA and SCL; pin 6 is FB; pin 2 is AVIN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Power input for high-side switch | Connects directly to bulk input capacitor; handles peak inductor current and switching noise. |
| AVIN | Analog supply input | Provides clean bias for control circuitry; must be decoupled separately from PVIN. |
| EN | Enable control input | Active-high logic input; rising edge resets internal registers to defaults and initiates startup sequence. |
| VSEL | Mode select / voltage scale input | Hardware-selectable between active/sleep modes; complements I²C software control of operating mode. |
| SDA / SCL | I²C bidirectional data / clock | Support Fast/Standard/High-Speed I²C protocols; enable real-time VOUT reprogramming and mode switching. |
| FB | Feedback sense input | Resistor-divider connection point for output voltage regulation; internal reference = 0.4 V. |
| SW | Switch node | Drain connection of internal P/N-MOSFET pair; connects to inductor; requires low-inductance layout. |
| PGND / AGND | Power / analog ground | Separate ground pins minimize noise coupling; internally connected via PowerPAD™ but require distinct PCB pours. |
Key Features
| Feature | Design Value |
|---|---|
| I²C programmable output | 6-bit DAC resolution enables 12.5-mV voltage steps across 0.75–1.5375 V range for precise core rail tuning. |
| Dual PFM modes | Light PFM minimizes IQ (28 µA); Fast PFM improves load transient response while maintaining >80% efficiency at 1 mA. |
| 3-MHz fixed-frequency PWM | Enables consistent EMI profile and eliminates subharmonic oscillation; supports <1-µH inductors for space-constrained layouts. |
| SmartReflex™ compliance | Meets TI's dynamic voltage and frequency scaling standard for OMAP™/XSCALE™ processors, enabling system-level power optimization. |
| Synchronizable switching | SYNC pin accepts external clock (2.65–3.35 MHz) to eliminate beat frequencies in multi-rail systems. |
Applications
| Mobile Phone Core Supply | Smartphone DSP Power Rail |
|---|---|
Use Scenario: Powering ARM-based application processors in LTE smartphones during DVFS transitions. IC Role / Device Role / Timing Role: Primary core voltage regulator with I²C-controlled dynamic voltage scaling synchronized to CPU frequency changes. Use Value: Enables 12.5-mV fine-grained VDD scaling across 0.75–1.5375 V, reducing dynamic power by up to 30% versus fixed-output converters. | Use Scenario: Supplying low-voltage DSP cores in dual-mode (GSM/WCDMA) handsets with aggressive sleep-state requirements. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in Light PFM mode during idle periods and Fast PFM during burst processing. Use Value: Achieves 88% efficiency at 3 MHz and 800 mA load while maintaining 28 µA quiescent current in sleep, extending talk time by >15%. |
| PDA Application Processor Rail | Digital Camera Baseband SoC |
Use Scenario: Regulating core voltage for Intel XScale™-based PDAs requiring adaptive voltage under varying UI and connectivity loads. IC Role / Device Role / Timing Role: I²C-configurable step-down converter supporting both forced PWM for video decode and PFM for background sync tasks. Use Value: Dual-mode operation delivers <100 mVpp ripple in Fast PFM and <30 mVpp in PWM, ensuring signal integrity for high-speed memory interfaces. | Use Scenario: Powering baseband SoCs in compact digital cameras with flash LED and image sensor co-location constraints. IC Role / Device Role / Timing Role: Compact 3×3 mm QFN buck regulator with minimal external components (1 µH inductor + two 10 µF ceramics). Use Value: 1-mm profile solution meets strict height limits; 35-ns minimum on-time supports 3.6 V → 1.2 V conversion at 3 MHz without duty-cycle limitation. |
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. 1.05 V); identical I²C interface, package, and electrical specs. | Optimized for 1.2-V core rails (e.g., certain OMAP variants); same footprint and register map. | Select when target SoC requires 1.2 V nominal core voltage and identical dynamic scaling capability. |
| TPS62353YZG | Default output voltage = 1.20 V; shares same 0.75–1.5375 V programmable range and 3-MHz operation. | Designed for split-supply DSP solutions where 1.2 V core and 1.0 V I/O rails coexist; pinout identical. | Choose for systems needing consistent 1.2 V default with full I²C programmability and thermal performance matching TPS62354YZGR. |
Compared with TPS62352YZG and TPS62353YZG, the TPS62354YZGR offers a factory-default 1.05 V output optimized for newer low-voltage ARM Cortex-A8/A9 cores, while retaining identical I²C control, package, thermal resistance (89°C/W), and transient response-making it the preferred choice for next-generation smartphone platforms requiring tighter core voltage margins.
Availability
TPS62354YZGR is available at Aetrix Electronics and suitable for mobile phone core supplies, smartphone DSP power rails, and PDA application processor rails requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TPS62354YZGR 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 specializing in analog, embedded processing, and power management ICs, with leadership in high-efficiency DC-DC conversion and system-on-chip power solutions.
The TPS6235x product line was designed specifically for battery-powered portable electronics requiring dynamic voltage scaling, ultra-thin form factors, and SmartReflex™ compliance-targeting OMAP™, XSCALE™, and other low-voltage processor platforms.
FAQ
What is the default output voltage of the TPS62354YZGR?
The TPS62354YZGR has a factory-programmed default output voltage of 1.05 V. This value is set by internal register bits (VSEL0[6] = 1, VSEL1[6] = 1) and can be dynamically adjusted via its I²C interface across a 0.75–1.5375-V range in 12.5-mV increments. The device retains this setting after power-up unless modified through the I²C bus.
Does the TPS62354YZGR support synchronization to an external clock?
Yes, the TPS62354YZGR supports external clock synchronization via the SYNC pin, which accepts input frequencies from 2.65 MHz to 3.35 MHz. When driven by an external clock, the internal oscillator locks to that frequency, eliminating beat frequencies in multi-rail systems and enabling deterministic EMI reduction. Static high or low on SYNC has no effect-the converter operates at its internal 3-MHz clock.
What package type and thermal characteristics does the TPS62354YZGR use?
The TPS62354YZGR uses a 10-pin QFN package (3 mm × 3 mm, 0.5-mm pitch) with exposed PowerPAD™ thermally connected to PGND. Its junction-to-ambient thermal resistance (θJA) is 89°C/W on a standard 4-layer JEDEC board, supporting 1100 mW maximum power dissipation at 25°C ambient. Derating applies above 25°C per the equation TA(max) = 125°C – (θJA × PD).
How does the TPS62354YZGR manage efficiency across light and heavy loads?
The TPS62354YZGR employs two distinct power-save modes: Light PFM for ultra-low quiescent current (28 µA typical) at microamp loads, and Fast PFM for improved transient response while maintaining >80% efficiency down to 1 mA. At heavier loads (>100 mA), it automatically transitions to 3-MHz PWM operation, achieving up to 88% efficiency at 800 mA with 3.6-V input and 1.35-V output.
Is the TPS62354YZGR compatible with SmartReflex™-enabled processors?
Yes, the TPS62354YZGR is explicitly designed to be SmartReflex™ compliant. It supports the full suite of SmartReflex™ dynamic voltage and frequency scaling (DVFS) requirements-including I²C-based real-time VDD adjustment, mode switching (Light PFM/Fast PFM/Forced PWM), and seamless integration with OMAP™ and XSCALE™ processors-enabling system-level power optimization without additional glue logic.
TPS62354YZGR 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 (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
TPS62354YZGR FAQ
1.How can I place an order for TPS62354YZGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62354YZGR 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 TPS62354YZGR reliable?
The price and inventory of TPS62354YZGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62354YZGR is usually 5 days.
3.What payment methods are accepted for TPS62354YZGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62354YZGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62354YZGR?
TPS62354YZGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62354YZGR 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 TPS62354YZGR?
For technical support, including TPS62354YZGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62354YZGR requirements.
6.How does Aetrix verify that TPS62354YZGR is sourced from the original manufacturer or authorized distributors?
All TPS62354YZGR 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 TPS62354YZGR meets industry standards.
7.What is the process for return or replacement of TPS62354YZGR?
All TPS62354YZGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62354YZGR, 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 TPS62354YZGR part is unused and in its original packaging.
Return procedure for TPS62354YZGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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