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Texas Instruments TPS62356YZGR
- Part No.:
- TPS62356YZGR
- Manufacturer:
- Texas Instruments
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS62356YZGR.pdf
- Description:
- IC REG BUCK ADJ 1A 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
TPS62356YZGR 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/processor core supplies in smartphones and handheld devices.
For engineers reviewing the TPS62356YZGR datasheet, TPS62356YZGR pinout, TPS62356YZGR application, or TPS62356YZGR 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 thermal shutdown at 150°C with 20°C hysteresis.
Technical Context
The TPS62356YZGR integrates a 6-bit DAC for I²C-controlled output voltage adjustment and uses a fixed 3-MHz oscillator with PLL-based timing to enable ultra-small external components. Its dual MOSFET power stage includes P-channel and N-channel switches with typical rDS(on) of 320 mΩ and 150 mΩ respectively at 3.2 V gate drive.
It implements two distinct power-save modes-Light PFM for highest light-load efficiency and Fast PFM for improved transient response-and supports external clock synchronization via the SYNC pin while maintaining full I²C operation up to 3.4 Mbps in High-Speed mode.
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 across full discharge curve. |
| Output Voltage Range | 1.50 V to 1.975 V - factory-programmed default 1.80 V with 12.5-mV I²C-adjustable steps. |
| Max Output Current | 1000 mA - achievable at VI ≥ 3.2 V; derated to 800 mA below 3.2 V per thermal limits. |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables use of 1 µH inductors and compact 10 µF ceramic output capacitors. |
| I²C Interface Speed | Up to 3.4 Mbps - compatible with High-Speed I²C for fast dynamic voltage scaling during processor DVFS transitions. |
| Quiescent Current | 35 µA (typ) in Light PFM - extends battery life in standby states without compromising wake-up speed. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
The TPS62356YZGR is packaged in a 12-pin NanoFree™ chip-scale package (CSP), measuring 1.6 mm × 1.6 mm with 0.4-mm pitch, optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Power Input | High-current input supply for power stage; requires local 10-µF ceramic bypass capacitor. |
| AVIN | Analog Input | Low-noise analog supply for internal bias and reference circuits; separate from PVIN to reduce noise coupling. |
| EN | Enable Control | Active-high digital enable; rising edge resets all registers to default values including output voltage and mode settings. |
| VSEL | Mode Select | Hardware-selectable sleep/active mode; overrides I²C mode bits when asserted, enabling fast hardware state switching. |
| SDA / SCL | I²C Interface | Open-drain bidirectional data and clock lines supporting Standard/Fast/High-Speed I²C up to 3.4 Mbps. |
| FB | Feedback Input | Resistive divider connection point for output voltage sensing; internal 0.4-V reference enables precise regulation. |
| AGND / PGND | Ground Returns | Separate analog and power ground pins minimize noise injection into feedback and control circuitry. |
| SYNC | External Clock Sync | Accepts external 2.65–3.35 MHz clock signal to synchronize switching frequency and reduce EMI in multi-rail systems. |
| SW | Switch Node | Connection to internal P/N-MOSFET drains; routes high di/dt current to external inductor and must be minimized in loop area. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Programmable Output | 6-bit DAC enables 64 discrete output voltages between 1.50 V and 1.975 V in 12.5-mV increments for fine-grained DVFS. |
| Three Operating Modes | Configurable Light PFM (lowest IQ), Fast PFM (best transient), or Forced PWM (fixed-frequency, lowest ripple) via register or VSEL pin. |
| Ultra-Fast Start-Up | 170 µs from EN assertion to regulated 1.80 V output under light load, critical for low-latency processor wake-up sequences. |
| SmartReflex™ Compliance | Supports TI's SmartReflex power management protocol for adaptive voltage scaling in OMAP™ and similar SoCs. |
| Thermal Protection | Integrated thermal shutdown with hysteresis prevents latch-up during sustained overtemperature conditions without external circuitry. |
Applications
| Mobile Application Processor Core Supply | Smartphone Baseband Power Rail |
|---|---|
Use Scenario: Dynamic voltage/frequency scaling (DVFS) for ARM Cortex-A series processors in Android smartphones. IC Role / Device Role / Timing Role: Primary core voltage regulator controlled via I²C by PMIC or application processor during performance state transitions. Use Value: Enables 12.5-mV voltage steps and sub-200-µs settling time to match real-time CPU load demands while minimizing active power loss. | Use Scenario: Powering Qualcomm Snapdragon or MediaTek baseband ICs requiring tightly regulated 1.8-V supply with fast transient response. IC Role / Device Role / Timing Role: Dedicated buck converter supplying baseband SoC core logic, synchronized to system clock via SYNC pin to suppress beat frequencies. Use Value: 3-MHz switching and Fast PFM mode deliver <12-mV ripple under 100-mA load steps, meeting 3G/4G RF coexistence requirements. |
| Digital Camera Image Sensor Bias | Wearable Health Monitor SoC |
Use Scenario: Providing stable 1.8-V bias to CMOS image sensors in compact digital cameras with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise power source with spread-spectrum-capable SYNC input to shift switching harmonics away from sensor readout bands. Use Value: NanoFree CSP footprint and 1.6-mm² area allow placement directly beneath sensor module, reducing parasitic inductance and improving PSRR above 1 MHz. | Use Scenario: Powering ultra-low-power MCU + BLE SoC (e.g., TI CC2652) in fitness trackers with multi-day battery life. IC Role / Device Role / Timing Role: Primary system regulator operating in Light PFM mode during sleep, transitioning to PWM during BLE packet transmission bursts. Use Value: 35-µA quiescent current and <2-µA shutdown current extend coin-cell battery life beyond 12 months in typical usage profiles. |
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 |
|---|---|---|---|
| TPS62355DRCR | QFN-10 package; 0.75–1.5375 V output range; no SYNC pin; same I²C interface and 3-MHz operation. | Targeted at cost-sensitive, non-synchronized applications where board space allows larger QFN and lower output voltage is required. | Select when 1.8-V fixed output is unnecessary and PCB layout favors QFN over CSP. |
| TPS62360YZGR | Successor device with 2.5–5.5 V input, 0.6–3.3 V output, 1.2-A capability, and enhanced I²C command set; pin-compatible CSP-12. | Designed for next-gen processors requiring wider output range and higher current, with backward-compatible control interface. | Select for new designs needing extended voltage flexibility and future-proofing; not drop-in for legacy TPS62356 firmware. |
Compared with TPS62355DRCR, the TPS62356YZGR offers higher default output voltage and SYNC capability but shares identical I²C timing and DAC resolution; versus TPS62360YZGR, it provides proven qualification for consumer-grade thermal profiles but lacks extended input/output range and newer fault-reporting registers.
Availability
TPS62356YZGR is available at Aetrix Electronics and suitable for smartphone power management, wearable health monitor design, and digital camera sensor biasing requiring stable component supply and consistent NanoFree™ CSP packaging.
Supply support for TPS62356YZGR 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 requiring ultra-small footprint, high efficiency across wide load ranges, and intelligent voltage management via standard digital interfaces.
FAQ
What is the default output voltage of the TPS62356YZGR?
The TPS62356YZGR has a factory-programmed default output voltage of 1.80 V, within its specified 1.50 V to 1.975 V range. This value is stored in the device's nonvolatile configuration registers and is applied immediately upon power-up or EN assertion before any I²C communication occurs. The TPS62356YZGR maintains ±2% DC accuracy in PWM mode across temperature and line/load variations.
Does the TPS62356YZGR support external clock synchronization?
Yes, the TPS62356YZGR supports external clock synchronization via the SYNC pin, which accepts an external 2.65–3.35 MHz clock signal to align its internal 3-MHz switching frequency. This feature reduces electromagnetic interference in multi-rail systems by eliminating beat frequencies between independent switchers. The TPS62356YZGR continues full I²C operation during synchronization and does not require reconfiguration.
What package type is used for the TPS62356YZGR?
The TPS62356YZGR uses a 12-pin NanoFree™ chip-scale package (CSP), designated YZG, with dimensions of 1.6 mm × 1.6 mm and 0.4-mm ball pitch. This package places solder balls directly on the silicon die, eliminating wire bonds and lead frames to achieve the smallest possible footprint and thermal resistance. The TPS62356YZGR is not offered in QFN variants - only the YZG CSP package carries the "R" tape-and-reel suffix.
How does the TPS62356YZGR manage power-save modes?
The TPS62356YZGR implements two distinct power-save modes: Light PFM for maximum light-load efficiency (35 µA IQ) and Fast PFM for superior transient response during load steps. Mode selection is configurable via I²C register CONTROL1[4:2] or hardware pin VSEL. The TPS62356YZGR automatically transitions between PFM and PWM based on load current threshold, and all mode states persist through EN toggling unless explicitly overwritten.
What is the maximum I²C clock frequency supported by the TPS62356YZGR?
The TPS62356YZGR supports I²C clock frequencies up to 3.4 Mbps in High-Speed mode, compliant with the Philips I²C specification. This capability enables rapid dynamic voltage scaling during processor DVFS events. The TPS62356YZGR also supports Standard (100 kHz) and Fast (400 kHz) modes for backward compatibility. Timing parameters such as tSU,DATA (10 ns min) and tHD,DATA (70 ns max) are guaranteed across temperature and voltage ranges.
TPS62356YZGR 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
TPS62356YZGR FAQ
1.How can I place an order for TPS62356YZGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62356YZGR 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 TPS62356YZGR reliable?
The price and inventory of TPS62356YZGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62356YZGR is usually 5 days.
3.What payment methods are accepted for TPS62356YZGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62356YZGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62356YZGR?
TPS62356YZGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62356YZGR 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 TPS62356YZGR?
For technical support, including TPS62356YZGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62356YZGR requirements.
6.How does Aetrix verify that TPS62356YZGR is sourced from the original manufacturer or authorized distributors?
All TPS62356YZGR 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 TPS62356YZGR meets industry standards.
7.What is the process for return or replacement of TPS62356YZGR?
All TPS62356YZGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62356YZGR, 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 TPS62356YZGR part is unused and in its original packaging.
Return procedure for TPS62356YZGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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