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Texas Instruments TPS62353YZGR
- Part No.:
- TPS62353YZGR
- Manufacturer:
- Texas Instruments
- Package:
- 12-UFBGA, DSBGA
- Datasheet:
-
TPS62353YZGR.pdf
- Description:
- IC REG BUCK ADJ 800MA 12DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,160
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Product details
Overview
TPS62353YZGR from Texas Instruments is a 3-MHz synchronous step-down DC-DC converter with I²C-compatible interface, optimized for battery-powered portable applications. It delivers up to 800 mA output current from a 2.7–5.5 V input, supports dynamic voltage scaling down to 0.75 V, and operates in Light PFM, Fast PFM, or forced PWM modes - enabling efficient core power delivery for low-voltage DSPs and processors in smartphones and PDAs.
For engineers reviewing the TPS62353YZGR datasheet, TPS62353YZGR pinout, TPS62353YZGR application, or TPS62353YZGR equivalent, key selection considerations include its 6-bit DAC-controlled output (0.75–1.5375 V), ±2% PWM DC voltage accuracy, 35-ns minimum on-time, 28-µA quiescent current in Light PFM mode, and NanoFree™ CSP-12 packaging for ultra-thin mobile designs.
Technical Context
The TPS62353YZGR integrates a high-frequency 3-MHz fixed-frequency PWM controller with adaptive power-save mode logic that automatically transitions between Light PFM (efficiency-optimized) and Fast PFM (transient-optimized) based on load conditions. Its internal 6-bit DAC enables precise I²C-programmable output voltage steps of 12.5 mV across the 0.75–1.5375 V range.
It features dual MOSFET power switches (P-channel rDS(on) = 250–500 mΩ, N-channel rDS(on) = 150–350 mΩ at 3.6 V), thermal shutdown at 150°C with 20°C hysteresis, and a dedicated SYNC pin for external clock synchronization - all implemented in a 12-ball NanoFree™ CSP package with 0.4-mm pitch and 1.5-mm × 1.5-mm footprint.
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 with headroom for voltage sag and ripple. |
| Output Voltage Range | 0.75 V to 1.5375 V - programmable via 6-bit DAC with 12.5-mV resolution for fine-grained core voltage scaling. |
| Max Output Current | 800 mA - sufficient for DSP/processor core rails in space-constrained handheld devices. |
| Switching Frequency | 3 MHz (±12%) - enables use of sub-2.2-µH inductors and 10-µF ceramic output capacitors for minimal board area. |
| Quiescent Current | 28 µA typical in Light PFM mode - extends battery life during light-load standby states. |
| DC Voltage Accuracy | ±2% in PWM mode - ensures stable processor core voltage under varying line/load conditions. |
| I²C Interface Speed | Up to 3.4 Mbps (High-Speed mode) - supports rapid dynamic voltage scaling during CPU frequency transitions. |
| Min On-Time | 35 ns - enables high step-down ratios (e.g., 3.6 V → 0.75 V) at 3 MHz without pulse-skipping instability. |
Pinout & Package
The TPS62353YZGR is packaged in a 12-ball NanoFree™ Chip Scale Package (CSP-12) with 0.4-mm ball pitch and 1.5-mm × 1.5-mm body size, optimized for ultra-thin mobile applications. Thermal performance is characterized with θJA = 89°C/W on a 4-layer JEDEC-standard 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 input | Active-high digital enable; rising edge resets internal registers to defaults. |
| VSEL | Mode select input | Hardware-selectable active/sleep mode; also configurable via I²C CONTROL1 register. |
| SDA | I²C bidirectional data line | Open-drain interface supporting Standard/Fast/High-Speed I²C up to 3.4 Mbps. |
| SCL | I²C clock input | Drives serial interface timing; requires external pull-up resistor. |
| FB | Feedback sense input | Resistor-divider connected to output; sets regulated voltage via internal 0.4-V reference. |
| AGND | Analog ground | Reference for feedback and control circuits; separate from PGND to minimize noise coupling. |
| PGND | Power ground | Return path for high-current switching node; must be tied to AGND under IC via thermal pad. |
| SW | Switch node | Connects to external inductor; carries high di/dt switching waveform. |
| SYNC | External clock sync input | Allows synchronization to system clock source; no effect when held static. |
| - | Thermal pad (bottom) | Internally connected to PGND; must be soldered to PCB thermal plane for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| I²C programmable output | 6-bit DAC enables 12.5-mV voltage steps from 0.75 V to 1.5375 V for dynamic core voltage scaling. |
| Adaptive power-save modes | Automatically selects Light PFM (max efficiency at light loads) or Fast PFM (fast transient response) based on load current. |
| Ultra-low quiescent current | 28 µA typical in Light PFM mode preserves battery runtime during idle or sleep states. |
| 3-MHz fixed-frequency operation | Enables compact filter design with 1-µH inductors and 10-µF ceramic capacitors - reducing solution footprint by >40% vs. 1-MHz converters. |
| SmartReflex™ compliance | Supports TI's SmartReflex power management standard for coordinated voltage/frequency scaling in OMAP™ platforms. |
| On-the-fly synchronization | SYNC pin allows real-time alignment of switching edges to external clocks - eliminating beat frequencies in multi-rail systems. |
Applications
| Mobile Application Processor Core Supply | Low-Power DSP Voltage Rail |
|---|---|
Use Scenario: Powering ARM Cortex-A8 core in OMAP3-based smartphone during DVFS transitions. IC Role / Device Role / Timing Role: Primary buck regulator delivering dynamically scaled core voltage (0.9–1.35 V) synchronized to CPU clock via SYNC pin. Use Value: Achieves >88% efficiency at 500 mA while enabling 12.5-mV voltage steps for precise power/performance tuning per workload. | Use Scenario: Supplying TI C64x+ DSP core in portable medical imaging device requiring low-noise, fast-transient response. IC Role / Device Role / Timing Role: High-bandwidth step-down converter operating in Fast PFM mode to maintain <30-mV load transient deviation at 100-µs recovery time. Use Value: 35-ns minimum on-time and 3-MHz switching ensure stable 1.05-V rail under 0–800-mA dynamic loading without audible coil whine. |
| Smartphone Application Subsystem | Ultra-Thin PDA System-on-Chip Rail |
Use Scenario: Generating 1.2-V I/O supply for application processor subsystem in LTE-enabled handset with tight height constraints. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter using NanoFree™ CSP-12 package and integrated MOSFETs. Use Value: 1.5-mm × 1.5-mm footprint and 0.55-mm max height enable placement under display stack - critical for bezel-free form factors. | Use Scenario: Powering XScale™ PXA270 SoC in handheld PDA requiring long battery life and cold-temperature operation. IC Role / Device Role / Timing Role: Low-quiescent-current buck regulator operating from 3.6-V Li-ion battery across –40°C to 85°C ambient. Use Value: 28-µA Light PFM quiescent current extends standby time to >14 days; thermal shutdown at 150°C prevents damage during sustained high-load operation. |
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 | Fixed default output of 1.20 V (vs. 1.00 V for TPS62353YZGR); identical I²C programmability and CSP-12 package. | Preconfigured for lower-voltage SoCs like OMAP-L138; same thermal and layout compatibility. | Select when system requires factory-set 1.20-V startup voltage without I²C initialization overhead. |
| TPS62354YZG | Default output of 1.30 V; otherwise identical electrical specs, pinout, and feature set. | Targeted at higher-core-voltage applications such as early OMAP36xx derivatives requiring 1.3-V nominal rails. | Choose for systems where 1.30-V default simplifies boot sequence and reduces initial I²C configuration steps. |
Compared with TPS62352YZG and TPS62354YZG, the TPS62353YZGR offers the lowest factory-default output (1.00 V), making it optimal for newer ultra-low-power processors requiring tighter voltage margins and aggressive dynamic scaling - while retaining full software configurability across the same 0.75–1.5375-V range.
Availability
TPS62353YZGR is available at Aetrix Electronics and suitable for smartphone power management, portable medical device DC-DC conversion, and ultra-thin PDA SoC rail generation requiring stable component supply, consistent NanoFree™ CSP-12 sourcing, and long-term production support.
Supply support for TPS62353YZGR 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 family was designed specifically for battery-powered mobile devices requiring ultra-small footprint, dynamic voltage scaling, and best-in-class light-load efficiency - targeting OMAP™, XScale™, and other low-voltage application processors.
FAQ
What is the default output voltage of the TPS62353YZGR at power-up?
The TPS62353YZGR has a factory-programmed default output voltage of 1.00 V at power-up, set by internal VSEL0/VSEL1 bits. This value is confirmed in the Ordering Information table and remains active until modified via I²C commands. The full programmable range spans 0.75 V to 1.5375 V in 12.5-mV increments, and the 1.00-V default aligns with common low-power processor core requirements in modern smartphones and PDAs.
Does the TPS62353YZGR support external clock synchronization?
Yes, the TPS62353YZGR supports real-time external clock synchronization via its dedicated SYNC pin. When an external clock signal within the 2.65–3.35 MHz range is applied, the internal oscillator locks to it - eliminating beat frequencies in multi-rail systems and enabling deterministic switching timing. This capability is explicitly documented in the Electrical Characteristics table under "f(SYNC)" and is functionally identical across all TPS6235x variants including the TPS62353YZGR.
What package type is used for the TPS62353YZGR, and what are its thermal characteristics?
The TPS62353YZGR uses the NanoFree™ CSP-12 package: a 12-ball chip-scale package with 0.4-mm pitch and 1.5-mm × 1.5-mm body size. Its thermal resistance is specified as θJA = 89°C/W on a 4-layer JEDEC-standard board. This enables a maximum power dissipation of 1100 mW at 25°C ambient, derating linearly above that temperature - critical for maintaining junction temperature below 125°C in thermally constrained mobile PCB layouts.
How does the TPS62353YZGR manage efficiency across varying load conditions?
The TPS62353YZGR employs three distinct operating modes - Light PFM (for highest efficiency at light loads), Fast PFM (for superior transient response), and forced PWM (for constant-frequency noise control) - selected automatically or via I²C. At 500 mA and 3.6-V input, it achieves 88% efficiency in 3-MHz PWM mode; at 1-mA load, Light PFM mode maintains >80% efficiency due to its 28-µA quiescent current and adaptive gate drive. This behavior is validated in Figure 3–6 of the SLVS540E datasheet.
Is the TPS62353YZGR pin-compatible with other members of the TPS6235x family?
Yes, the TPS62353YZGR shares identical pinout, package (CSP-12), and functional terminal assignments with all other YZG-marked TPS6235x devices including TPS62350YZG through TPS62356YZG. This allows direct hardware substitution in existing designs - only firmware-level I²C configuration differs to accommodate variant-specific default voltages and register settings. The Pin Assignments and Terminal Functions tables in the datasheet confirm this uniformity across the family.
TPS62353YZGR 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
TPS62353YZGR FAQ
1.How can I place an order for TPS62353YZGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62353YZGR 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 TPS62353YZGR reliable?
The price and inventory of TPS62353YZGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62353YZGR is usually 5 days.
3.What payment methods are accepted for TPS62353YZGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62353YZGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62353YZGR?
TPS62353YZGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62353YZGR 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 TPS62353YZGR?
For technical support, including TPS62353YZGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62353YZGR requirements.
6.How does Aetrix verify that TPS62353YZGR is sourced from the original manufacturer or authorized distributors?
All TPS62353YZGR 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 TPS62353YZGR meets industry standards.
7.What is the process for return or replacement of TPS62353YZGR?
All TPS62353YZGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62353YZGR, 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 TPS62353YZGR part is unused and in its original packaging.
Return procedure for TPS62353YZGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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