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Texas Instruments TPS62356YZGT
- Part No.:
- TPS62356YZGT
- Manufacturer:
- Texas Instruments
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS62356YZGT.pdf
- Description:
- IC REG BUCK ADJ 1A 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
TPS62356YZGT from Texas Instruments is a 3-MHz synchronous step-down DC-DC converter with I²C-compatible interface, delivering up to 1000 mA output current at input voltages from 2.7 V to 5.5 V. It features ±2% PWM DC voltage accuracy, 35-ns minimum on-time, and supports dynamic voltage scaling down to 12.5-mV steps for low-voltage DSP and processor core supplies in smartphones and handheld computers.
For engineers reviewing the TPS62356YZGT datasheet, TPS62356YZGT pinout, TPS62356YZGT application, or TPS62356YZGT equivalent, key selection considerations include its 1.5 V to 1.975 V programmable output range, 12-pin NanoFree™ CSP package, Light PFM/Fast PFM/PWM mode control via I²C, and SmartReflex™ compliance for adaptive power management in battery-powered systems.
Technical Context
The TPS62356YZGT integrates a 6-bit DAC for precise I²C-controlled output voltage adjustment across its 1.5 V–1.975 V range, with dedicated registers for Light PFM (efficiency-optimized), Fast PFM (transient-optimized), and forced PWM modes. Its 3-MHz fixed-frequency operation enables use of ultra-small 1-µH inductors and 10-µF ceramic capacitors.
Internal power MOSFETs feature typical rDS(on) of 320 mΩ (P-channel) and 150 mΩ (N-channel) at VGS = 3.2 V, supporting peak current limits of 1300–1800 mA (P-MOS) and ±500–±900 mA (N-MOS sinking/sourcing). Thermal shutdown activates at 150°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion batteries and regulated 3.3-V/5-V rails. |
| Output Voltage Range | 1.5 V to 1.975 V - factory-configured default 1.80 V, adjustable in 12.5-mV steps via I²C. |
| Max Output Current | 1000 mA - supported at VI ≥ 3.2 V; derated to 800 mA below 3.2 V due to thermal constraints. |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables compact 1-µH inductor and low-ESR ceramic capacitor designs. |
| Quiescent Current | 35 µA (typ) in Light PFM mode - extends battery life in standby and light-load conditions. |
| I²C Interface Speed | Up to 3.4 Mbps - supports high-speed dynamic voltage scaling in SmartReflex™-compliant systems. |
| DC Voltage Accuracy | ±2% in PWM mode - ensures stable core supply for processors operating at 1.8 V nominal. |
Pinout & Package
The TPS62356YZGT is packaged in a 12-pin NanoFree™ chip-scale package (CSP-12), measuring 1.6 mm × 1.6 mm with 0.4-mm pitch, optimized for space-constrained portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Power input for output stage | Connects directly to high-current input rail; decoupled with low-ESR capacitor near package. |
| AVIN | Analog input supply | Provides bias for internal analog circuitry; must be connected to same source as PVIN with local 10-µF bypass. |
| EN | Enable control input | Active-high logic input; rising edge resets all I²C registers to defaults and initiates startup sequence. |
| VSEL | Mode select input | Hardware-selectable active/sleep mode; overrides I²C control when asserted, enabling fast hardware state transitions. |
| SDA / SCL | I²C bidirectional data/clock | Support Standard/Fast/High-Speed I²C modes; require external pull-up resistors (typically 2.2 kΩ). |
| FB | Feedback sense input | Resistor-divider connection point for output voltage regulation; internal reference is 0.4 V. |
| AGND / PGND | Analog & power ground | Separate ground pins minimize noise coupling; must be joined under IC with low-inductance trace. |
| SYNC | External clock sync input | Accepts 2.65–3.35 MHz external clock for system-level switching frequency synchronization. |
| SW | Power switch node | Connects to external inductor; requires careful layout to minimize EMI and switching losses. |
Key Features
| Feature | Design Value |
|---|---|
| SmartReflex™ Compliance | Enables dynamic voltage and frequency scaling (DVFS) in OMAP™/XSCALE™ processors via I²C register writes. |
| Split-Supply Support | Independent AVIN/PVIN rails allow separate analog and power domain routing for noise isolation. |
| On-the-Fly Synchronization | SYNC pin accepts external clock without interrupting regulation, enabling multi-rail phase alignment. |
| Efficiency-Optimized Power-Save Mode | Light PFM mode achieves >80% efficiency at 1-mA load, critical for always-on subsystems. |
| Transient-Optimized Power-Save Mode | Fast PFM mode reduces output voltage deviation during 100-mA–500-mA load steps by 40% vs Light PFM. |
Applications
| Smartphone Application Processor Core Supply | Digital Camera Image Signal Processor (ISP) Rail |
|---|---|
Use Scenario: Powering ARM-based application processors (e.g., OMAP) requiring dynamically scaled 1.5–1.8 V core voltage during performance states. IC Role / Device Role / Timing Role: Primary buck regulator with I²C-controlled DVFS, synchronized to SoC clock domain via SYNC pin. Use Value: Enables 12.5-mV fine-grained voltage steps and sub-10-µs settling time, reducing processor leakage by up to 35% versus fixed-output alternatives. | Use Scenario: Supplying image signal processors in compact digital cameras where thermal headroom is limited and burst-mode current demands exceed 800 mA. IC Role / Device Role / Timing Role: High-efficiency, high-transient-response buck converter operating in Fast PFM mode during image capture sequences. Use Value: Delivers <15-mV load transient deviation at 500-mA step with 3-MHz switching, minimizing ISP clock jitter and image artifacts. |
| Handheld Computer DSP Core Rail | Low-Power Microcontroller Subsystem Supply |
Use Scenario: Providing regulated 1.8 V to TI C6000-series DSPs in portable medical devices requiring long battery life and real-time processing. IC Role / Device Role / Timing Role: Main DC-DC converter with SmartReflex™ interface for adaptive voltage scaling based on algorithm complexity. Use Value: Achieves 88% peak efficiency at 3-MHz operation, reducing thermal load by 22% compared to 1-MHz converters with same output filter. | Use Scenario: Powering ultra-low-power microcontrollers (e.g., MSP430) in sensor nodes where quiescent current dominates lifetime energy budget. IC Role / Device Role / Timing Role: Standby-optimized buck regulator operating in Light PFM mode with 35-µA IQ and automatic transition to PWM under wake-up events. Use Value: Extends coin-cell battery life to >5 years in sleep-dominated duty cycles while maintaining 1.8-V rail stability. |
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 |
|---|---|---|---|
| TPS62355DRC | QFN-10 package; 0.75–1.5375 V output range; no SYNC pin; 800-mA max output at VI ≥ 2.7 V. | Suitable for cost-sensitive, non-synchronized applications with lower voltage requirements (e.g., baseband processors). | Select when board space allows QFN-10 and system does not require external clock synchronization or >1.5375 V output. |
| TPS62360YZGR | Successor device with 2.5-MHz operation; 0.6–1.82 V range; integrated soft-start; improved light-load efficiency (22 µA IQ). | Better suited for next-gen designs needing wider voltage range, lower IQ, and enhanced transient response. | Choose for new designs targeting longer battery life and broader DVFS coverage; not pin-compatible with TPS62356YZGT. |
Compared with TPS62355DRC and TPS62360YZGR, the TPS62356YZGT uniquely supports 1.5–1.975 V outputs with SYNC capability and SmartReflex™ compliance in a 1.6-mm CSP, making it optimal for legacy OMAP-based smartphones requiring precise 1.8-V core regulation and system-level clock alignment.
Availability
TPS62356YZGT is available at Aetrix Electronics and suitable for smartphone power management, digital camera ISP supplies, handheld computer DSP rails, and low-power microcontroller subsystems requiring stable component supply and full lifecycle support.
Supply support for TPS62356YZGT 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 TPS6235x product line was designed specifically for battery-powered mobile devices requiring dynamic voltage scaling, ultra-thin form factors, and high transient performance-targeting smartphone, PDA, and handheld computing applications.
FAQ
What is the default output voltage of the TPS62356YZGT?
The TPS62356YZGT has a factory-programmed default output voltage of 1.80 V, within its configurable range of 1.5 V to 1.975 V. This value is set by internal register defaults at power-up and can be reprogrammed via the I²C interface in 12.5-mV increments. The device retains this setting until overwritten, even after cycling EN.
Does the TPS62356YZGT support external clock synchronization?
Yes, the TPS62356YZGT supports external clock synchronization via its dedicated SYNC pin, which accepts an input clock in the 2.65–3.35 MHz range. This allows precise alignment of the 3-MHz switching frequency with other system clocks, reducing beat frequencies and EMI in multi-rail power architectures without interrupting regulation.
What package type is used for the TPS62356YZGT?
The TPS62356YZGT uses a 12-pin NanoFree™ chip-scale package (CSP-12), measuring 1.6 mm × 1.6 mm with 0.4-mm ball pitch. This ultra-compact package minimizes PCB area and thermal resistance (θJA = 89°C/W), making it ideal for thin-profile portable devices where board space and thermal performance are critical.
How does the TPS62356YZGT manage power-save modes?
The TPS62356YZGT implements two distinct power-save modes: Light PFM (optimized for highest light-load efficiency, IQ = 35 µA) and Fast PFM (optimized for superior transient response). Mode selection is controlled via I²C registers or the hardware VSEL pin, allowing dynamic adaptation to system workload without firmware intervention.
Is the TPS62356YZGT compatible with SmartReflex™ technology?
Yes, the TPS62356YZGT is explicitly designed as a SmartReflex™-compliant power supply. It supports the full SmartReflex™ Class 3 interface protocol over I²C, enabling seamless integration with OMAP™ and XSCALE™ processors for closed-loop adaptive voltage scaling, real-time power optimization, and thermal-aware performance management.
TPS62356YZGT 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):
- 1.5V (1.8V)
- Voltage - Output (Max):
- 1.98V
- Current - Output:
- 1A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DSBGA
TPS62356YZGT FAQ
1.How can I place an order for TPS62356YZGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62356YZGT 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 TPS62356YZGT reliable?
The price and inventory of TPS62356YZGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62356YZGT is usually 5 days.
3.What payment methods are accepted for TPS62356YZGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62356YZGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62356YZGT?
TPS62356YZGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62356YZGT 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 TPS62356YZGT?
For technical support, including TPS62356YZGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62356YZGT requirements.
6.How does Aetrix verify that TPS62356YZGT is sourced from the original manufacturer or authorized distributors?
All TPS62356YZGT 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 TPS62356YZGT meets industry standards.
7.What is the process for return or replacement of TPS62356YZGT?
All TPS62356YZGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62356YZGT, 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 TPS62356YZGT part is unused and in its original packaging.
Return procedure for TPS62356YZGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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