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Texas Instruments TPS62304YZDT
- Part No.:
- TPS62304YZDT
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS62304YZDT.pdf
- Description:
- IC REG BUCK 1.2V 500MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,819
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Product details
Overview
TPS62304YZDT from Texas Instruments is a 500-mA, 3-MHz synchronous step-down DC-DC converter in an 8-pin Chip Scale Package (CSP), delivering fixed 1.2 V output with ±2.5% DC accuracy over –40°C to 85°C, 2.7–6 V input range, and 86 µA quiescent current - optimized for Li-ion/NiMH-powered portable devices including smartphones and digital cameras.
For engineers reviewing the TPS62304YZDT datasheet, TPS62304YZDT pinout, TPS62304YZDT application, or TPS62304YZDT equivalent, key selection criteria include its 1.2 V fixed output, CSP-8 footprint compatibility, power-save mode operation at light loads, and synchronization capability via MODE/SYNC pin for noise-sensitive multi-rail systems.
Technical Context
The TPS62304YZDT employs voltage-mode control with input voltage feed-forward for fast transient response, enabling stable regulation with small 0.9–2.2 µH inductors and 4.7–10 µF ceramic capacitors. Its dual MOSFET current limiting (P-MOS: 670–890 mA; N-MOS: ±460–±740 mA) ensures robust short-circuit protection and low-duty-cycle reliability during start-up or low-VOUT conditions.
It operates in automatic PFM/PWM mode below ~10–50 mA (load-dependent), switching to fixed 3-MHz PWM above that threshold; the MODE/SYNC pin supports on-the-fly forced PWM activation or external clock synchronization (2.65–3.35 MHz), with 35 ns minimum on-time supporting high VIN/VOUT ratios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5% (DC accuracy over full temperature and load range) |
| Max Output Current | 500 mA continuous - supports processor core rails and memory I/O in compact handhelds |
| Input Voltage Range | 2.7 V to 6 V - compatible with single-cell Li-ion (2.7–4.2 V) and 3-cell NiMH (3.6 V nominal) |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables ultra-small passive components and minimizes EMI fundamental frequency |
| Quiescent Current | 86 µA in PFM mode - extends battery life in standby/sleep states of portable electronics |
| Shutdown Current | <1 µA - meets stringent system-level power-down requirements |
| Thermal Resistance | 250°C/W (θJA, CSP-8) - requires careful PCB copper area design for 400 mW max power dissipation |
Pinout & Package
TPS62304YZDT is packaged in an 8-pin NanoFree™ Chip Scale Package (CSP), bottom-terminal configuration with 0.4 mm pitch and 1.6 × 1.6 mm footprint. The package integrates PowerPAD™ connected internally to PGND for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Main supply rail connection; must be decoupled locally with ≥4.7 µF ceramic capacitor |
| EN | Enable control | Active-high logic input; pull to GND for shutdown (<1 µA ISD); must not float |
| ADJ | Adjust reference (not used) | No connection required - internal 1.2 V reference active; ADJ pin left unconnected per datasheet |
| FB | Feedback sense (not used) | No connection required - fixed-output version disables internal divider; FB pin left unconnected |
| VOUT | Output sense | Connects directly to regulated output node for feedback path integrity and stability |
| MODE/SYNC | Mode control / sync input | Pull to GND for auto PFM/PWM; pull to VIN for forced PWM; accept external 3-MHz clock signal |
| PGND | Power ground | High-current return path for SW node; tie to thermal pad and system ground plane |
| SW | Switch node | Drain connection of internal P/N-MOSFETs; routes to inductor; sensitive to layout parasitics |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables use of sub-1 µH inductors and ≤10 µF ceramic output caps - reduces solution size to <10 mm² |
| Power-save mode (PFM) | Maintains >85% efficiency down to 1 mA load - critical for always-on subsystems in mobile devices |
| 100% duty cycle capability | Supports dropout as low as VIN – VOUT = 0 V - sustains regulation during brownout or battery sag |
| On-the-fly mode switching | Allows dynamic transition between PFM (efficiency) and PWM (noise control) without reset or reconfiguration |
| Synchronization input | Accepts external clock (2.65–3.35 MHz) on MODE/SYNC pin - eliminates beat frequencies in multi-converter systems |
| Integrated active power-down sequencing | Internal discharge resistor (30–50 Ω) on VOUT ensures controlled ramp-down - prevents back-powering of downstream ICs |
Applications
| Smartphone Application Processor Core Rail | Digital Camera Image Sensor Bias Supply |
|---|---|
|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring tightly regulated 1.2 V at up to 500 mA peak current during burst processing. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator delivering low-noise, fast-transient 1.2 V with 35 ns minimum on-time support for dynamic voltage scaling. Use Value: Achieves 93% peak efficiency at 3.6 VIN/1.2 VOUT, reducing thermal load in thermally constrained smartphone mid-frames. |
Use Scenario: Supplies bias voltage to CMOS image sensors in compact digital cameras, where space and EMI are critical constraints. IC Role / Device Role / Timing Role: Compact, high-frequency POL converter synchronized to system clock to avoid interference with pixel readout timing. Use Value: 3-MHz operation shifts switching noise above sensitive analog video bands; CSP-8 footprint fits within 2×2 mm camera module keep-out zones. |
| Bluetooth/WLAN Baseband SoC Power | USB DSL Modem PHY Interface Rail |
|
Use Scenario: Powers Bluetooth 5.x or Wi-Fi 4/5 baseband ICs operating intermittently with deep sleep cycles and rapid wake-up bursts. IC Role / Device Role / Timing Role: Efficient buck converter entering PFM mode during idle periods and transitioning seamlessly to PWM during TX/RX activity. Use Value: 86 µA quiescent current extends battery runtime in portable hotspots; MODE/SYNC pin allows synchronization to RF subsystem clock. |
Use Scenario: Provides clean 1.2 V supply to USB-based DSL modem PHY chips interfacing with ADSL line drivers and analog front-ends. IC Role / Device Role / Timing Role: Low-ripple, low-noise DC-DC stage placed adjacent to high-speed USB transceivers to prevent coupling into data lines. Use Value: Fixed 1.2 V output eliminates external resistor network errors; ±2.5% accuracy ensures compliance with USB PHY VDD tolerance specs. |
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 |
|---|---|---|---|
| TPS62304DRC | Same electrical specs but in 10-pin QFN (3×3 mm); higher thermal resistance (49°C/W vs 250°C/W) | Better thermal performance in high-ambient or high-power-density layouts; requires larger PCB area | Select when board space permits and thermal headroom is limited; not drop-in compatible with CSP footprint |
| TPS62313YZD | Fixed 1.8 V output; identical CSP-8 package, 3-MHz operation, and PFM/PWM architecture | Targets higher-voltage I/O rails (e.g., memory interfaces, display drivers) rather than core logic | Choose when system requires 1.8 V instead of 1.2 V; pinout and layout are identical - only BOM change needed |
Compared with TPS62304DRC, the TPS62304YZDT offers superior board-area efficiency and lower profile but requires more aggressive thermal management; versus TPS62313YZD, it delivers lower output voltage for advanced process nodes while sharing identical footprint and control interface.
Availability
TPS62304YZDT is available at Aetrix Electronics and suitable for smartphone power management, digital camera sensor biasing, Bluetooth/WLAN baseband supplies, USB DSL modem PHY rails, and portable medical device logic rails requiring stable component supply across high-volume production cycles.
Supply support for TPS62304YZDT 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 and industrial applications.
The TPS623xx family was designed specifically for battery-powered portable electronics requiring ultra-small footprints, high switching frequencies, and seamless light-load efficiency - targeting smartphones, PDAs, and compact imaging systems.
FAQ
What is the output voltage tolerance of the TPS62304YZDT over temperature and load?
The TPS62304YZDT provides a fixed 1.2 V output with ±2.5% DC voltage accuracy across –40°C to +85°C ambient temperature and 0–500 mA load range. This specification includes line, load, and temperature effects but excludes external component tolerances, as no external resistors are used in this fixed-output variant.
Can the TPS62304YZDT be synchronized to an external clock, and what is the acceptable frequency range?
Yes, the TPS62304YZDT supports external synchronization via the MODE/SYNC pin, accepting clock signals from 2.65 MHz to 3.35 MHz. The device locks to the falling edge of the external clock and maintains fixed-frequency PWM operation during synchronization - essential for noise-sensitive multi-rail systems like smartphone application processors.
What is the recommended inductor value and type for optimal performance with the TPS62304YZDT?
Texas Instruments recommends a 0.9 µH to 2.2 µH shielded power inductor with saturation current ≥750 mA (e.g., FDK MIPW3226 series). Lower inductance (0.9 µH) improves transient response and enables smaller size; higher inductance (2.2 µH) reduces ripple current and improves light-load efficiency in PFM mode.
Does the TPS62304YZDT require external feedback resistors for its 1.2 V output?
No. The TPS62304YZDT is a fixed-output variant - the 1.2 V regulation is achieved using an internal resistor divider. The ADJ and FB pins are not connected externally and must remain unpopulated per the datasheet; connecting them may cause regulation failure or instability.
How does the TPS62304YZDT handle startup and power-down sequencing?
The TPS62304YZDT incorporates internal soft-start (250 µs typical rise time) to limit inrush current, and an integrated discharge resistor (30–50 Ω) on the VOUT pin ensures controlled power-down. When EN is pulled low, output voltage ramps down predictably - preventing back-powering of downstream logic or latch-up in interconnected ICs.
TPS62304YZDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 1.2V
- 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
TPS62304YZDT FAQ
1.How can I place an order for TPS62304YZDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62304YZDT 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 TPS62304YZDT reliable?
The price and inventory of TPS62304YZDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62304YZDT is usually 5 days.
3.What payment methods are accepted for TPS62304YZDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62304YZDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62304YZDT?
TPS62304YZDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62304YZDT 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 TPS62304YZDT?
For technical support, including TPS62304YZDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62304YZDT requirements.
6.How does Aetrix verify that TPS62304YZDT is sourced from the original manufacturer or authorized distributors?
All TPS62304YZDT 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 TPS62304YZDT meets industry standards.
7.What is the process for return or replacement of TPS62304YZDT?
All TPS62304YZDT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62304YZDT, 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 TPS62304YZDT part is unused and in its original packaging.
Return procedure for TPS62304YZDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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