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Texas Instruments TPS62305YZDR
- Part No.:
- TPS62305YZDR
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS62305YZDR.pdf
- Description:
- IC REG BUCK 1.875V 500MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,765
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Product details
Overview
TPS62305YZDR from Texas Instruments is a 500-mA, 3-MHz synchronous step-down DC-DC converter in an 8-pin NanoFree™ CSP package, delivering fixed 1.875 V output from 2.7–6 V input with up to 93% efficiency, 86 µA quiescent current, and 35 ns minimum on-time - optimized for battery-powered mobile phones and smart-phones.
For engineers reviewing the TPS62305YZDR datasheet, TPS62305YZDR pinout, TPS62305YZDR application, or TPS62305YZDR equivalent, this page provides verified circuit role (buck regulator), confirmed CSP-8 terminal mapping, real-world load/line transient performance, and two validated alternative parts for portable power design.
Technical Context
The TPS62305YZDR employs voltage-mode control with input-voltage feed-forward for fast load and line transient response, operating at a fixed 3-MHz switching frequency with automatic PFM/PWM mode transition below ~10 mA load. Its dual MOSFET current limits (P-MOS: 670–890 mA; N-MOS: ±460–±740 mA) ensure stable operation during low-duty-cycle and start-up conditions.
It integrates a 0.4-V internal reference, supports external synchronization via MODE/SYNC pin (2.65–3.35 MHz range), and features 100% duty cycle capability for ultra-low dropout. The device enters shutdown with <1 µA current when EN is pulled low and includes thermal shutdown at 150°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.875 V ±2.7% over –40°C to 85°C - ensures stable core supply for low-voltage DSPs and application processors. |
| Input Voltage Range | 2.7 V to 6 V - compatible with single-cell Li-ion (3.0–4.2 V) and 3-cell NiMH/NiCd (3.6 V nominal) batteries. |
| Max Output Current | 500 mA continuous - sufficient for RF transceivers, baseband ICs, and memory subsystems in compact handhelds. |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables use of sub-1-µH inductors and 4.7-µF ceramic capacitors for minimal solution size. |
| Quiescent Current | 86 µA in PFM mode - extends battery life in standby and low-power listening states without sacrificing wake-up speed. |
| Efficiency Peak | Up to 93% at 3.6 VIN/1.8 VOUT - reduces thermal load in sealed enclosures and improves runtime in portable devices. |
| Minimum On-Time | 35 ns - supports high VIN-to-VOUT ratios (e.g., 5 V → 1.875 V) while maintaining regulation at light loads. |
Pinout & Package
TPS62305YZDR uses an 8-pin NanoFree™ chip-scale package (CSP-8), measuring 1.5 mm × 1.5 mm with 0.5-mm pitch, featuring bottom-side solder bumps for ultra-low profile (<0.5 mm height) and optimal thermal path to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies energy to both power stage and internal bias; requires local 4.7-µF X5R/X7R ceramic bypass capacitor. |
| EN | Enable control | Active-high logic input; must be terminated to GND or VI - floating state causes undefined operation. |
| ADJ | Adjust reference input | Not connected on fixed-output TPS62305YZDR; leaving unconnected avoids parasitic leakage paths. |
| FB | Feedback sense | Internally tied to 0.4-V reference; unused on fixed-output version - must remain unconnected per datasheet. |
| VOUT | Regulated output | Provides regulated 1.875 V; connects directly to load and output capacitor (4.7 µF typical). |
| MODE/SYNC | Mode selection & sync | Pull to GND for auto PFM/PWM; pull to VI for forced PWM; accept external 3-MHz clock for multi-rail synchronization. |
| PGND | Power ground | Low-impedance return path for switch node current; must be connected to solid ground plane under CSP body. |
| SW | Switch node | Drain connection of internal P/N-MOSFET pair; routes to external inductor; sensitive to layout-induced ringing. |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables <1-µH inductors and small ceramic caps, reducing total solution area to <10 mm² including passives. |
| Power-save mode (PFM) | Maintains >85% efficiency down to 1 mA load, critical for always-on functions like Bluetooth LE or sensor wake-up. |
| Integrated active power-down sequencing | Discharges VOUT through internal 30–50 Ω resistor (TPS6232x only) - not applicable to TPS62305YZDR. |
| 100% duty cycle capability | Supports dropout as low as 100 mV (e.g., 2.0 VIN → 1.875 VOUT), extending usable battery voltage range. |
| Synchronization-ready MODE/SYNC pin | Allows multi-converter phase alignment in multi-rail systems (e.g., SoC + memory + RF rails) to reduce EMI peaks. |
Applications
| Smart-Phones | WLAN/Bluetooth Modules |
|---|---|
|
Use Scenario: Core voltage supply for application processor and modem subsystems in space-constrained smartphones. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 1.875 V at up to 500 mA with fast transient response to burst-mode CPU activity. Use Value: 3-MHz switching minimizes inductor size and eliminates audible noise; 86 µA quiescent current extends standby time between charges. |
Use Scenario: Powering 2.4-GHz WLAN and Bluetooth coexistence modules requiring clean, low-noise 1.8-V rails. IC Role / Device Role / Timing Role: Dedicated point-of-load regulator with forced-PWM mode (via MODE/SYNC high) to suppress switching noise near RF front-end. Use Value: Fixed 3-MHz operation enables predictable EMI filtering; <0.5-mm CSP height allows placement under RF shield without height penalty. |
| Digital Cameras | USB-Based DSL Modems |
|
Use Scenario: Supplying image signal processor (ISP) and CMOS sensor interface logic in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency buck converter supporting rapid power-state transitions during capture/startup sequences. Use Value: 35-ns minimum on-time ensures regulation during short bursts (e.g., autofocus LED flash); 93% peak efficiency reduces thermal impact on lens assembly. |
Use Scenario: Generating 1.875-V rail for USB PHY and ADSL line driver ICs in plug-in DSL modems powered from USB 5-V bus. IC Role / Device Role / Timing Role: Compact, high-density DC-DC stage enabling full functionality within strict USB port power envelope (≤500 mA @ 5 V). Use Value: CSP-8 footprint fits tight board areas near USB connector; 2.7–6 V input range accommodates USB voltage tolerance (4.4–5.25 V) with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62303YZD | Fixed 1.8 V output (vs. 1.875 V); identical CSP-8 package, pinout, and electrical specs except VOUT and FB voltage tolerance (±2% vs. ±2.7%). | Used where 1.8 V is required for I/O or memory interfaces instead of core voltage; same PCB layout and BOM except feedback network. | Select TPS62303YZD if system requires exact 1.8 V; no layout change needed due to identical footprint and pin function. |
| TPS62313YZD | Fixed 1.8 V output with 2-V undervoltage lockout (vs. 2.4 V); otherwise matches TPS62305YZDR in package, pinout, and key specs. | Better suited for lower-input systems (e.g., 2-cell LiFePO₄ or regulated 3.3-V supplies) where earlier shutdown prevents brownout. | Choose TPS62313YZD when input source dips below 2.4 V during discharge; UVLO threshold shift requires validation of system startup behavior. |
Compared with TPS62305YZDR, TPS62303YZD offers tighter output tolerance at 1.8 V for I/O rails, while TPS62313YZD provides lower UVLO for wider input compatibility - both retain identical CSP-8 layout and 3-MHz operation but require verification of output voltage and startup thresholds in final design.
Availability
TPS62305YZDR is available at Aetrix Electronics and suitable for smart-phone power management, WLAN/Bluetooth module design, and USB-based DSL modem development requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS62305YZDR 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 ICs, with decades of expertise in high-efficiency DC-DC conversion for portable electronics.
The TPS623xx family was designed specifically for space- and power-constrained battery-operated devices - delivering high-frequency, high-efficiency buck regulation in chip-scale packaging for mobile phones, PDAs, and wireless peripherals.
FAQ
What is the output voltage accuracy of the TPS62305YZDR over temperature?
The TPS62305YZDR delivers ±2.7% DC output voltage accuracy across –40°C to +85°C ambient temperature. This specification includes initial tolerance, line regulation (0.11%/V), and load regulation (–0.002%/mA), ensuring reliable operation for 1.875-V core supplies in consumer handhelds without external trimming.
Does the TPS62305YZDR support external synchronization, and what is the acceptable clock range?
Yes, the TPS62305YZDR supports external synchronization via its MODE/SYNC pin, accepting clock signals from 2.65 MHz to 3.35 MHz with 20–80% duty cycle. This enables precise phase alignment of multiple TPS623xx regulators in multi-rail systems to minimize conducted EMI peaks.
What is the recommended inductor value for the TPS62305YZDR in a typical 3.6-V input to 1.875-V output application?
Texas Instruments recommends a 1-µH shielded power inductor (e.g., FDK MIPW3226 series) for TPS62305YZDR at 3.6-V input. This value balances peak current ripple (~30% of 500-mA load), efficiency (>90%), and physical size - validated in Figure 1 of the SLVS528E datasheet.
Can the TPS62305YZDR operate with a 2.5-V input voltage?
No - the TPS62305YZDR has a 2.4-V undervoltage lockout (UVLO) threshold with hysteresis. At 2.5 V input, the device will start and operate normally; however, input below 2.4 V causes shutdown. Operation at 2.5 V is valid and supported per absolute maximum ratings (VIN min = 2.7 V recommended).
Is the TPS62305YZDR pin-compatible with other members of the TPS623xx family in CSP-8 packaging?
Yes - all TPS623xx devices in CSP-8 (e.g., TPS62303YZD, TPS62313YZD) share identical pinout, package dimensions, and thermal pad configuration. However, ADJ and FB pins are unused on fixed-output variants, so PCB layout remains fully interchangeable across the CSP-8 variants.
TPS62305YZDR 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):
- 1.875V
- 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
TPS62305YZDR FAQ
1.How can I place an order for TPS62305YZDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62305YZDR 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 TPS62305YZDR reliable?
The price and inventory of TPS62305YZDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62305YZDR is usually 5 days.
3.What payment methods are accepted for TPS62305YZDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62305YZDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62305YZDR?
TPS62305YZDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62305YZDR 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 TPS62305YZDR?
For technical support, including TPS62305YZDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62305YZDR requirements.
6.How does Aetrix verify that TPS62305YZDR is sourced from the original manufacturer or authorized distributors?
All TPS62305YZDR 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 TPS62305YZDR meets industry standards.
7.What is the process for return or replacement of TPS62305YZDR?
All TPS62305YZDR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62305YZDR, 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 TPS62305YZDR part is unused and in its original packaging.
Return procedure for TPS62305YZDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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