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Texas Instruments TPS62304YZDR
- Part No.:
- TPS62304YZDR
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS62304YZDR.pdf
- Description:
- IC REG BUCK 1.2V 500MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,016
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Product details
Overview
TPS62304YZDR from Texas Instruments is a 500-mA, 3-MHz synchronous step-down DC-DC converter in an 8-pin CSP package, delivering fixed 1.2 V output from 2.7–6 V input. It features 86-µA quiescent current, 35-ns minimum on-time, and power-save mode operation for high efficiency across light-to-heavy loads. Designed for space-constrained portable electronics, it powers core logic in smartphones and PDAs.
For engineers reviewing the TPS62304YZDR datasheet, TPS62304YZDR pinout, TPS62304YZDR application, or TPS62304YZDR equivalent, key selection criteria include its fixed 1.2 V output, NanoFree™ CSP-8 footprint, 3-MHz switching frequency with external synchronization capability, and verified performance under 2.7–6 V input with ≤500 mA load.
Technical Context
The TPS62304YZDR employs voltage-mode control with input voltage feed-forward to achieve best-in-class transient response. Its dual MOSFET power stage integrates P-channel (750 mΩ typ at 3.6 V) and N-channel (750 mΩ typ at 3.6 V) switches with independent current limits (670–890 mA P-MOS, 550–890 mA N-MOS).
Operation dynamically shifts between fixed-frequency PWM (forced by MODE/SYNC = VI) and pulse-frequency modulation (PFM) in power-save mode (MODE/SYNC = GND), enabling >93% peak efficiency while maintaining <250 µs start-up time and -0.5%/+1.8% DC output voltage accuracy over -40°C to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5% (TA = 25°C); enables direct powering of 1.2-V core rails 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. |
| Max Output Current | 500 mA continuous - sufficient for low-power DSPs, microcontrollers, and RF baseband ICs in handheld devices. |
| Switching Frequency | 3 MHz (2.65–3.35 MHz range) - allows use of sub-1-µH inductors and 4.7-µF ceramic capacitors for ultra-compact BOMs. |
| Quiescent Current | 86 µA (typ) in PFM mode - extends battery life in always-on standby functions like real-time clocks or sensor wake-up circuits. |
| Efficiency Peak | Up to 93% at 3 MHz - achieved with optimized gate drive and low RDS(on) MOSFETs, reducing thermal load in sealed enclosures. |
| Shutdown Current | <1 µA - meets stringent system-level power-down requirements for mobile platforms with deep-sleep states. |
Pinout & Package
TPS62304YZDR uses Texas Instruments' NanoFree™ 8-pin Chip Scale Package (CSP-8), measuring 1.5 mm × 1.5 mm with 0.5-mm pitch, bottom-side solder bumps for minimal PCB footprint and thermal resistance (RθJA = 250°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Connects directly to input bypass capacitor; supports 2.7–6 V; feeds both control circuitry and power stage. |
| EN | Enable control input | Active-high logic; pull to GND for shutdown (<1 µA ISD); must not float; enables sequencing with host processor GPIO. |
| ADJ | Adjust reference input | Not connected on fixed-output TPS62304YZDR; leave unconnected per datasheet; internal 1.2 V reference routed internally. |
| FB | Feedback sense input | Internally tied to regulated 1.2 V output; no external resistor divider required; simplifies layout and reduces component count. |
| VOUT | Output voltage sense | Connected to converter output node; provides local feedback path to minimize noise sensitivity and improve regulation. |
| MODE/SYNC | Mode control / sync input | Pull to GND for auto PFM/PWM; pull to VIN for forced PWM; accepts 2.65–3.35 MHz external clock for multi-rail synchronization. |
| PGND | Power ground return | Low-impedance return path for switch node current; must be connected to solid ground plane beneath CSP thermal pad. |
| SW | Switch node output | Drain connection of internal P- and N-MOSFETs; connects to inductor; requires tight layout to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables use of 0.9–2.2 µH chip inductors and 4.7 µF X5R/X7R ceramics, reducing solution size to <15 mm² total area. |
| Power-save mode (PFM) | Maintains ≥85% efficiency down to 1 mA load via pulse-skipping, critical for battery runtime in idle/standby states. |
| 100% duty cycle capability | Supports ultra-low dropout operation (e.g., 1.2 V out from 1.3 V in), extending usable battery voltage range in Li-ion systems. |
| Synchronizable switching | Eliminates beat frequencies in multi-rail systems by aligning TPS62304YZDR's 3-MHz clock to external master oscillator. |
| NanoFree™ CSP-8 packaging | 1.5 mm × 1.5 mm footprint with bottom-terminal solder bumps delivers lowest profile (0.55 mm max height) and best thermal performance among 8-pin DC-DC converters. |
Applications
| Smartphone Application Processor Core | Bluetooth Baseband Power Rail |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring stable 1.2 V at up to 500 mA during burst processing. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator delivering tightly regulated 1.2 V with fast transient response to handle dynamic DVFS transitions. Use Value: 35-ns minimum on-time and voltage-mode control ensure <50 mV output deviation during 100→400 mA load steps, preserving core stability. |
Use Scenario: Supplies clean 1.2 V to Bluetooth 5.x baseband ICs in compact earbuds and wearables. IC Role / Device Role / Timing Role: Low-noise, small-footprint DC-DC converter operating in forced PWM mode to suppress switching noise near 2.4 GHz RF front-end. Use Value: Synchronization capability eliminates heterodyne interference with BLE radio; 93% efficiency extends charge cycle by >12% vs. LDO alternatives. |
| USB-Powered DSL Modem PHY | Industrial Handheld Scanner Logic |
Use Scenario: Converts 5 V USB input to 1.2 V for Ethernet PHY digital interface logic in compact DSL modems. IC Role / Device Role / Timing Role: Input-voltage feed-forward controlled buck regulator ensuring consistent regulation across full 4.75–5.25 V USB spec range. Use Value: 0.11%/V line regulation minimizes output drift during USB cable drop; 3-MHz switching avoids audible noise in consumer-grade enclosures. |
Use Scenario: Powers FPGA configuration logic and barcode decoder ASIC in ruggedized handheld scanners operating from 3.6 V NiMH packs. IC Role / Device Role / Timing Role: High-efficiency POL converter with 100% duty cycle support to sustain 1.2 V output as battery discharges from 4.2 V to 3.0 V. Use Value: 86 µA quiescent current extends shelf-life in sleep mode; CSP-8 package withstands 2500g shock per MIL-STD-810G mechanical testing. |
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 |
|---|---|---|---|
| TPS62303YZDR | Fixed 1.8 V output; identical CSP-8 package, pinout, and 3-MHz architecture. | Targets 1.8-V I/O domains or older DSPs; not suitable for 1.2-V core rails without additional regulation. | Select when system requires 1.8 V instead of 1.2 V; no layout change needed but output voltage mismatch invalidates direct substitution. |
| TPS62321DRCR | QFN-10 package (3×3 mm); adjustable output (0.6–5.4 V); 1.5 V fixed variant; higher RθJA (49°C/W vs. 250°C/W). | Better thermal performance at high ambient; supports design reuse across multiple output voltages via resistor feedback. | Choose for thermally demanding environments or multi-voltage designs; requires PCB redesign due to larger QFN footprint and different pin mapping. |
Compared with TPS62304YZDR, TPS62303YZDR offers identical form-factor and efficiency but targets 1.8 V applications, whereas TPS62321DRCR trades nano-package size for thermal headroom and output flexibility-making it preferable for industrial designs where board space is less constrained than thermal budget.
Availability
TPS62304YZDR is available at Aetrix Electronics and suitable for smartphone power management, Bluetooth audio subsystems, USB-powered networking equipment, and industrial handheld scanners requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS62304YZDR 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 and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing reliability.
The TPS623xx family was engineered specifically for ultra-compact, high-efficiency DC-DC conversion in battery-powered portable electronics, emphasizing minimal solution size, wide input range, and seamless transition between PWM and PFM modes.
FAQ
What is the output voltage tolerance of the TPS62304YZDR over temperature and load?
The TPS62304YZDR delivers fixed 1.2 V output with -0.5% to +1.8% DC accuracy across -40°C to 85°C ambient temperature and 0–500 mA load range. This specification includes line regulation (0.11%/V), load regulation (-0.002%/mA), and thermal drift effects-verified per TI SLVS528E datasheet Section 6.5.
Can the TPS62304YZDR be synchronized to an external clock, and what is the acceptable frequency range?
Yes, the TPS62304YZDR 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, enabling deterministic phase alignment in multi-rail systems-critical for noise-sensitive RF applications where beat frequencies must be avoided.
Does the TPS62304YZDR require external feedback resistors for its 1.2 V output?
No, the TPS62304YZDR is a fixed-output variant with internal feedback network configured for 1.2 V. The ADJ and FB pins are internally connected to the reference; external resistors are unnecessary and must not be added. This eliminates tuning errors and reduces bill-of-materials cost and PCB area.
What is the minimum inductor value recommended for stable operation of the TPS62304YZDR?
Texas Instruments specifies 0.9 µH as the minimum inductor value for TPS62304YZDR in PWM mode (MODE/SYNC = VI) with 4.7 µF output capacitance. Using smaller inductors risks current limit triggering and reduced efficiency; 1.0 µH or 2.2 µH FDK MIPW3226-series inductors are validated in TI reference designs for optimal ripple and transient performance.
How does the TPS62304YZDR behave during input voltage dropout below UVLO threshold?
The TPS62304YZDR incorporates a 2.4 V undervoltage lockout (UVLO) with hysteresis. When VIN drops below 2.4 V, the device shuts down cleanly-disabling switching, pulling SW low via internal discharge path, and reducing quiescent current to <1 µA. Recovery occurs only after VIN rises above 2.55 V, preventing brownout oscillation during battery sag.
TPS62304YZDR 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
TPS62304YZDR FAQ
1.How can I place an order for TPS62304YZDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62304YZDR 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 TPS62304YZDR reliable?
The price and inventory of TPS62304YZDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62304YZDR is usually 5 days.
3.What payment methods are accepted for TPS62304YZDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62304YZDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62304YZDR?
TPS62304YZDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62304YZDR 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 TPS62304YZDR?
For technical support, including TPS62304YZDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62304YZDR requirements.
6.How does Aetrix verify that TPS62304YZDR is sourced from the original manufacturer or authorized distributors?
All TPS62304YZDR 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 TPS62304YZDR meets industry standards.
7.What is the process for return or replacement of TPS62304YZDR?
All TPS62304YZDR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62304YZDR, 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 TPS62304YZDR part is unused and in its original packaging.
Return procedure for TPS62304YZDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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