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Texas Instruments TPS62301YZDT
- Part No.:
- TPS62301YZDT
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS62301YZDT.pdf
- Description:
- IC REG BUCK 1.5V 500MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,886
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Product details
Overview
TPS62301YZDT 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 1.5 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 load range. Designed for space-constrained portable electronics including smart-phones and PDAs powered by single-cell Li-Ion or 3-cell NiMH/NiCd batteries.
For engineers reviewing the TPS62301YZDT datasheet, TPS62301YZDT pinout, TPS62301YZDT application, or TPS62301YZDT equivalent, key selection considerations include its 1.5 V fixed output, CSP-8 thermal performance (RθJA = 250°C/W), 93% peak efficiency at 3 MHz, integrated P/N-MOSFETs with 420–750 mΩ rDS(on), and MODE/SYNC pin for on-the-fly PWM/PSM mode control or external clock synchronization.
Technical Context
The TPS62301YZDT employs voltage-mode control with input-voltage feed-forward to achieve best-in-class load and line transient response. Its 3-MHz fixed-frequency PWM operation transitions automatically to pulse-frequency modulation (PFM) at light loads via internal comparator thresholding at –1.5% VOUT(NOMINAL).
It integrates dual current-limit protection: P-channel MOSFET limit (670–890 mA) and N-channel MOSFET limit (±460–±740 mA), enabling robust operation during low-duty-cycle conditions and startup. The device supports 100% duty cycle for ultra-low dropout and includes integrated soft-start to limit inrush current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2% over –40°C to 85°C; enables direct powering of core logic in TMS320™ DSPs and low-voltage microcontrollers. |
| Input Voltage Range | 2.7 V to 6 V; compatible with single-cell Li-Ion (2.7–4.2 V) and 3-cell NiMH/NiCd (3.6–4.5 V) battery systems. |
| Switching Frequency | 3 MHz (2.65–3.35 MHz typical); allows use of sub-1-µH inductors and 4.7-µF ceramic capacitors for minimal solution footprint. |
| Max Output Current | 500 mA continuous; sufficient for RF transceivers, baseband processors, and memory subsystems in handheld devices. |
| Quiescent Current | 86 µA in power-save mode; extends battery life in standby/sleep states without compromising wake-up response. |
| Efficiency Peak | Up to 93% at 3 MHz; achieved with low RDS(on) P/N-MOSFETs and optimized gate drive, reducing thermal load in sealed enclosures. |
| Thermal Resistance | RθJA = 250°C/W (CSP-8 package); requires careful PCB copper area design to maintain junction temperature ≤150°C at full load. |
Pinout & Package
TPS62301YZDT is housed in an 8-pin NanoFree™ Chip Scale Package (CSP), measuring 1.5 mm × 1.5 mm with 0.5-mm pitch. The package uses bottom-side solder bumps for compact mounting and enhanced thermal conduction to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies main power stage; must be decoupled with ≥4.7 µF X5R/X7R capacitor placed adjacent to pin. |
| EN | Enable control | Active-high logic input; tie to VI for operation or GND for shutdown (<1 µA ISD); must not float. |
| ADJ | Adjust reference input | Not connected on fixed-output TPS62301YZDT; leaving unconnected avoids feedback path errors. |
| FB | Feedback sense | Internally tied to regulated 0.4 V reference; not connected on fixed-output version-no external resistor divider required. |
| VOUT | Output sense | Connects directly to output rail; provides feedback path for regulation loop stability and load transient accuracy. |
| MODE/SYNC | Mode control / sync input | Pull to GND for auto PFM/PWM; pull to VI for forced PWM; accept 2.65–3.35 MHz external clock for multi-rail synchronization. |
| PGND | Power ground | High-current return path for switch node; must be routed with low-inductance trace to minimize EMI and voltage spikes. |
| SW | Switch node | Drain connection of internal P/N-MOSFETs; connects to inductor; requires tight layout to reduce ringing and EMI. |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables use of 0.9–2.2 µH chip inductors and 4.7–10 µF ceramic capacitors, reducing total solution size to <10 mm². |
| Power-save mode with PFM | Maintains >85% efficiency down to 1 mA load, extending battery runtime in always-on sensor and Bluetooth™ subsystems. |
| Integrated active power-down sequencing | Discharges output via 30–50 Ω internal discharge resistor (TPS6232x only)-not applicable to TPS62301YZDT. |
| 35-ns minimum on-time | Supports high VIN-to-VOUT ratios (e.g., 5 V → 1.5 V at ~30% duty cycle) while maintaining stable 3-MHz switching. |
| 100% duty-cycle capability | Allows dropout as low as 100 mV at 500 mA, critical for maintaining regulation near battery end-of-discharge (e.g., 2.8 V → 1.5 V). |
| Synchronizable switching frequency | Eliminates beat frequencies in multi-rail systems; enables deterministic EMI filtering and reduces conducted noise peaks. |
Applications
| Smartphone Baseband Power | Bluetooth™ SoC Core Supply |
|---|---|
Use Scenario: Powers ARM-based application processor cores requiring stable 1.5 V at up to 500 mA during burst processing. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated core voltage with fast load transient response (<2 µs recovery). Use Value: 93% peak efficiency and 86-µA quiescent current extend talk time by >12% versus legacy 1.5-MHz converters. |
Use Scenario: Supplies 1.5 V to Bluetooth™ 5.0 radio ICs during active transmit/receive cycles with intermittent sleep states. IC Role / Device Role / Timing Role: Low-noise, dynamically controllable power source synchronized to host MCU clock to suppress RF interference. Use Value: MODE/SYNC pin enables forced PWM during active RF bursts and automatic PFM during idle, optimizing RF SNR and battery life simultaneously. |
| Digital Camera Image Sensor Bias | USB DSL Modem PHY Rail |
Use Scenario: Provides clean 1.5 V bias to CMOS image sensor analog front-end during exposure and readout phases. IC Role / Device Role / Timing Role: High-PSRR, low-ripple DC-DC converter operating in forced PWM mode to avoid switching noise coupling into analog signal chain. Use Value: 35-ns minimum on-time and 3-MHz operation enable precise timing alignment with sensor frame clocks, minimizing rolling shutter artifacts. |
Use Scenario: Generates 1.5 V for USB 2.0 physical layer transceiver in DSL modem adapters powered from USB bus (5 V input). IC Role / Device Role / Timing Role: Compact, thermally efficient step-down converter supporting hot-plug operation and rapid start-up (<250 µs). Use Value: CSP-8 package and 100% duty cycle ensure reliable regulation even as USB input sags to 4.4 V under load, preventing PHY lockup. |
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 |
|---|---|---|---|
| TPS62303YZD | Fixed 1.8 V output; identical CSP-8 package, pinout, and electrical specs except FB reference and output setpoint. | Targets 1.8 V I/O or memory rails instead of 1.5 V core logic; requires no schematic change beyond output capacitor re-rating. | Select when system architecture mandates 1.8 V supply for interface buffers or LPDDR memory termination. |
| TPS62321DRC | QFN-10 package (3×3 mm); fixed 1.5 V output; same 3-MHz operation but higher RθJA (49°C/W) and 2050-mW power rating. | Better thermal performance for sustained 500-mA loads in industrial ambient (>60°C); requires PCB redesign due to larger footprint and different pinout. | Choose for high-reliability, convection-cooled applications where CSP thermal limits are exceeded, accepting larger board area. |
Compared with TPS62303YZD, TPS62301YZDT delivers lower output voltage for core logic scaling; compared with TPS62321DRC, it trades thermal headroom for ultra-compact size-making it optimal for volume consumer handhelds where board space is constrained and peak load duration is brief.
Availability
TPS62301YZDT is available at Aetrix Electronics and suitable for smartphone baseband power, Bluetooth™ SoC core supply, digital camera image sensor bias, and USB-based DSL modem PHY rails requiring stable component supply with consistent lead times and full traceability.
Supply support for TPS62301YZDT 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 battery-powered systems.
The TPS623xx family was designed specifically for space- and efficiency-critical mobile applications-including smart-phones, PDAs, and wireless modules-where ultra-thin profiles, long battery life, and low-noise operation are mandatory.
FAQ
What is the output voltage tolerance of the TPS62301YZDT over temperature and load?
The TPS62301YZDT delivers 1.5 V output with ±2% DC accuracy over –40°C to 85°C ambient temperature and 0–500 mA load range in PWM mode. At 25°C, the tighter specification is –0.5% to +1.3%, ensuring stable core voltage for sensitive DSP and microcontroller operation without external trimming.
Can the TPS62301YZDT be synchronized to an external clock, and what is the acceptable frequency range?
Yes, the TPS62301YZDT supports external synchronization via the MODE/SYNC pin across 2.65–3.35 MHz. When driven by a clean square wave within this band, the P-channel MOSFET turn-on aligns to the falling edge of the external clock-enabling deterministic multi-rail timing and reduced EMI in dense PCB layouts.
Does the TPS62301YZDT require external compensation components?
No, the TPS62301YZDT uses an internally compensated voltage-mode control loop. No external compensation network is needed-only input (≥4.7 µF) and output (≥4.7 µF) ceramic capacitors and a 0.9–2.2 µH shielded inductor are required for stable operation per TI's reference design.
What is the maximum continuous output current the TPS62301YZDT can deliver in its CSP-8 package?
The TPS62301YZDT supports 500 mA continuous output current, limited by thermal constraints of the CSP-8 package (RθJA = 250°C/W). At 85°C ambient and 500 mA load, junction temperature reaches ~145°C-within the 150°C absolute max-provided ≥100 mm² of 1-oz copper is used under the PowerPAD™.
How does the TPS62301YZDT behave during input undervoltage lockout (UVLO)?
The TPS62301YZDT incorporates a 2.4 V UVLO threshold with hysteresis. When input drops below 2.4 V, the device shuts down and draws <1 µA. It remains off until VIN rises above 2.55 V, preventing erratic operation during battery brownout or cold-start conditions in portable equipment.
TPS62301YZDT 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):
- 1.5V
- 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
TPS62301YZDT FAQ
1.How can I place an order for TPS62301YZDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62301YZDT 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 TPS62301YZDT reliable?
The price and inventory of TPS62301YZDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62301YZDT is usually 5 days.
3.What payment methods are accepted for TPS62301YZDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62301YZDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62301YZDT?
TPS62301YZDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62301YZDT 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 TPS62301YZDT?
For technical support, including TPS62301YZDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62301YZDT requirements.
6.How does Aetrix verify that TPS62301YZDT is sourced from the original manufacturer or authorized distributors?
All TPS62301YZDT 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 TPS62301YZDT meets industry standards.
7.What is the process for return or replacement of TPS62301YZDT?
All TPS62301YZDT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62301YZDT, 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 TPS62301YZDT part is unused and in its original packaging.
Return procedure for TPS62301YZDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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