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Texas Instruments TPS62313YZDT
- Part No.:
- TPS62313YZDT
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS62313YZDT.pdf
- Description:
- IC REG BUCK 1.8V 500MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,779
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Product details
Overview
TPS62313YZDT from Texas Instruments is a 500-mA, 3-MHz synchronous step-down DC-DC converter in NanoFree™ CSP-8 packaging, delivering fixed 1.8 V output from 2.7–6 V input. It features 93% peak efficiency, 86-µA quiescent current, and power-save mode operation for portable battery-powered systems including smartphones and WLAN modules.
For engineers reviewing the TPS62313YZDT datasheet, TPS62313YZDT pinout, TPS62313YZDT application, or TPS62313YZDT equivalent, key selection criteria include its 1.8-V fixed output, 2-V undervoltage lockout, 35-ns minimum on-time, 100% duty cycle capability, and compatibility with 0.9–2.2-µH inductors and 4.7–10-µF ceramic capacitors in space-constrained designs.
Technical Context
The TPS62313YZDT employs voltage-mode control with input voltage feed-forward to achieve best-in-class load and line transient response. Its dual MOSFET current-limit architecture-720 mA (P-MOS) and 550 mA (N-MOS)-ensures stable operation during low-duty-cycle and start-up conditions.
It operates in fixed-frequency 3-MHz PWM mode at moderate-to-heavy loads and automatically transitions to pulse-frequency modulation (PFM) power-save mode below ~10 mA, reducing quiescent current to 86 µA while maintaining regulation via ±1.5% output ripple threshold detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±0.5% over –40°C to +85°C - enables direct powering of 1.8-V core logic without external feedback resistors. |
| Input Voltage Range | 2.7 V to 6 V - supports single-cell Li-ion (3.0–4.2 V), 3-cell NiMH/NiCd (3.6 V nominal), and USB-powered systems. |
| Switching Frequency | 3 MHz (±15%) - allows use of sub-1-mm-height 0.9–2.2-µH inductors and compact 4.7–10-µF ceramic output capacitors. |
| Max Output Current | 500 mA continuous - sufficient for baseband processors, RF transceivers, and memory subsystems in handheld devices. |
| Quiescent Current | 86 µA in PFM mode - extends battery life in standby/sleep states of always-on mobile applications. |
| UVLO Threshold | 2.0 V (min), 2.2 V (typ) - prevents erratic operation during brown-out or deep discharge of Li-ion cells. |
| Min On-Time | 35 ns - supports high step-down ratios (e.g., 5 V → 1.8 V at 36% duty cycle) without pulse skipping instability. |
Pinout & Package
NanoFree™ Chip Scale Package (CSP-8), 1.5 mm × 1.5 mm, 0.5-mm pitch, bottom-terminal layout with PowerPAD™ internally connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input to high-side switch | Connects directly to input bypass capacitor; must be decoupled within 2 mm for EMI and stability. |
| EN | Enable control input | Pull high to VI to activate; pull low to GND for <1-µA shutdown - no external pull-up required. |
| ADJ | Adjust reference input (not used) | Not connected on fixed-output TPS62313YZDT; must be left unconnected per datasheet guidance. |
| FB | Feedback sense input (not used) | Internally tied to 1.8-V reference; external connection prohibited for fixed-output variants. |
| VOUT | Output voltage sense point | Must connect directly to output capacitor anode; routing affects regulation accuracy and transient response. |
| MODE/SYNC | Mode selection & sync input | GND = auto PFM/PWM; VI = forced PWM; external 3-MHz clock = synchronization - all require termination. |
| PGND | Power ground return | Primary thermal and current return path; requires solid copper pour under package for thermal performance. |
| SW | Switch node | High dv/dt node connecting internal P/N-MOSFETs to inductor; critical for layout EMI and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables ultra-compact power solutions with ≤1-mm component height and minimal PCB area. |
| Power-save mode at light load | Maintains >85% efficiency down to 1 mA load while drawing only 86 µA quiescent current. |
| 100% duty cycle capability | Supports lowest dropout operation (e.g., 2.7 V → 1.8 V) without losing regulation during battery sag. |
| Synchronizable switching frequency | Allows multi-rail systems to eliminate beat frequencies and simplify EMI filtering via master-slave clocking. |
| Integrated active power-down sequencing | Provides controlled output discharge via 30–50-Ω internal resistor (TPS6232x only - not applicable to TPS62313YZDT). |
Applications
| Smartphones & Feature Phones | WLAN/Bluetooth Modules |
|---|---|
Use Scenario: Core voltage supply for application processors and baseband ICs in compact handheld form factors. IC Role / Device Role / Timing Role: Primary 1.8-V buck regulator delivering up to 500 mA with fast load transient response (<2 µs recovery). Use Value: Enables use of tiny 0.9-µH inductors and 4.7-µF X5R/X7R capacitors, reducing total solution size to <12 mm². | Use Scenario: Stable 1.8-V rail for IEEE 802.11b/g/n and Bluetooth 2.1+EDR radio front-ends and baseband controllers. IC Role / Device Role / Timing Role: Low-noise, high-efficiency power source synchronized to system clock to suppress switching interference. Use Value: 3-MHz operation places noise spectrum above sensitive 2.4-GHz ISM band, easing RF coexistence design. |
| Digital Cameras & Camcorders | USB-Based DSL Modems |
Use Scenario: Powering image sensor interfaces and ISP cores requiring clean, tightly regulated 1.8-V supply. IC Role / Device Role / Timing Role: High PSRR (>40 dB at 100 kHz) buck converter with low 250-µs startup time for rapid camera wake-up. Use Value: Power-save mode reduces standby current to <100 µA, extending battery runtime between photo captures. | Use Scenario: Compact 1.8-V supply for ADSL2+ PHY and embedded microcontroller in space-limited modem enclosures. IC Role / Device Role / Timing Role: Input-capable down to 2.7 V supports direct USB 5-V-to-1.8-V conversion with minimal external components. Use Value: 2-V UVLO ensures reliable operation even with USB port voltage drop under heavy load. |
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 |
|---|---|---|---|
| TPS62311YZD | Fixed 1.5-V output; identical CSP-8 package, pinout, and electrical specs except output voltage and UVLO (2.0 V). | Targets 1.5-V I/O or core rails instead of 1.8-V logic; same thermal profile and layout compatibility. | Select when system requires 1.5 V instead of 1.8 V - no PCB changes needed due to pin-to-pin equivalence. |
| TPS62315YZ | Fixed 1.875-V output; same CSP-8 footprint and functional behavior, but tighter output tolerance (–2%/+2.7%) and higher UVLO (2.0 V). | Used in precision analog subsystems or specific DSP cores requiring 1.875 V; minor voltage mismatch vs. 1.8 V. | Choose for margin-sensitive analog biasing where 75-mV offset is acceptable; verify load regulation impact. |
Compared with TPS62311YZD and TPS62315YZ, the TPS62313YZDT provides optimal balance of 1.8-V compatibility with mainstream digital logic families, industry-standard 2-V UVLO, and proven integration in smartphone power trees - making it the preferred choice for new 1.8-V SoC designs.
Availability
TPS62313YZDT is available at Aetrix Electronics and suitable for smartphones, WLAN modules, and digital cameras requiring stable component supply with consistent NanoFree™ CSP-8 packaging and full production traceability.
Supply support for TPS62313YZDT 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.
The TPS623xx family was designed specifically for ultra-thin, battery-powered portable electronics - emphasizing minimal solution size, high light-load efficiency, and seamless integration into tight PCB layouts.
FAQ
What is the output voltage tolerance of the TPS62313YZDT over temperature and load?
The TPS62313YZDT delivers 1.8 V with ±0.5% DC accuracy over –40°C to +85°C ambient temperature and 0–500 mA load range in PWM mode. This specification includes line and load regulation effects, ensuring stable core voltage for 1.8-V logic under real-world operating conditions.
Does the TPS62313YZDT require external feedback resistors for regulation?
No. The TPS62313YZDT is a fixed-output variant with internal 1.8-V reference; the FB and ADJ pins are not connected externally. Connecting either pin violates the datasheet and may cause regulation failure or damage.
Can the TPS62313YZDT operate from a 2.5-V input supply?
No. The TPS62313YZDT has a 2.0-V minimum undervoltage lockout threshold, but its absolute minimum input voltage is 2.7 V per the recommended operating conditions. Operation below 2.7 V risks instability, reduced output current, or failure to regulate.
What is the thermal resistance (θJA) of the TPS62313YZDT in its CSP-8 package?
The TPS62313YZDT in NanoFree™ CSP-8 has a junction-to-ambient thermal resistance (θJA) of 250°C/W when mounted on a standard 1-layer JEDEC test board (JESD51-7). With proper PCB copper pour under the PowerPAD™, actual θJA can improve to ~60–80°C/W in typical 4-layer designs.
Is the TPS62313YZDT pin-compatible with other members of the TPS623xx family in CSP-8?
Yes. All TPS623xx devices in the CSP-8 package - including TPS62311YZD, TPS62313YZDT, and TPS62315YZ - share identical pinout, footprint, and terminal functions. Only the output voltage and UVLO threshold differ between variants.
TPS62313YZDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA
TPS62313YZDT FAQ
1.How can I place an order for TPS62313YZDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62313YZDT 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 TPS62313YZDT reliable?
The price and inventory of TPS62313YZDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62313YZDT is usually 5 days.
3.What payment methods are accepted for TPS62313YZDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62313YZDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62313YZDT?
TPS62313YZDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62313YZDT 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 TPS62313YZDT?
For technical support, including TPS62313YZDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62313YZDT requirements.
6.How does Aetrix verify that TPS62313YZDT is sourced from the original manufacturer or authorized distributors?
All TPS62313YZDT 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 TPS62313YZDT meets industry standards.
7.What is the process for return or replacement of TPS62313YZDT?
All TPS62313YZDT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62313YZDT, 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 TPS62313YZDT part is unused and in its original packaging.
Return procedure for TPS62313YZDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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