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Texas Instruments TPS62404DRCT
- Part No.:
- TPS62404DRCT
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62404DRCT.pdf
- Description:
- IC REG BUCK PROG/3.3V DL 10VSON
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS62404DRCT from Texas Instruments is a dual synchronous step-down DC-DC converter IC delivering 400 mA on Channel 1 and 600 mA on Channel 2, with fixed output voltages of 1.2 V and 3.3 V respectively, operating from 2.5 V to 6 V input - designed for OMAP™/DSP core and I/O rail power in portable battery-powered systems.
For engineers reviewing the TPS62404DRCT datasheet, TPS62404DRCT pinout, TPS62404DRCT application, or TPS62404DRCT equivalent, key selection considerations include its 2.25-MHz fixed-frequency operation, 180° out-of-phase switching for reduced input ripple, ±1% output voltage accuracy in PWM mode, and support for dynamic voltage scaling via EasyScale™ interface.
Technical Context
The TPS62404DRCT integrates two independent synchronous buck regulators sharing a single 2.25-MHz oscillator with 180° phase offset to minimize input capacitor RMS current. Each channel employs voltage-mode control with input feed-forward and internal compensation, enabling stable operation with small ceramic capacitors.
Channel 1 (1.2 V / 400 mA) and Channel 2 (3.3 V / 600 mA) are independently enabled via EN1 and EN2 pins, and both support Power Save Mode (PFM) at light loads and forced PWM mode via MODE/DATA pin - with typical quiescent current of 32 μA (both converters active, no load, PFM enabled).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.5 V to 6 V - supports single-cell Li-ion (2.7–4.2 V) and regulated 3.3 V/5 V rails without external LDO pre-regulation. |
| VOUT1 / IOUT1 | 1.2 V / 400 mA - fixed output for low-voltage processor cores requiring tight regulation and fast transient response. |
| VOUT2 / IOUT2 | 3.3 V / 600 mA - fixed output optimized for I/O, memory, or peripheral rails with higher current demand. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of compact 2.2 μH inductors and low-ESR ceramic capacitors for space-constrained PCBs. |
| Output Accuracy | ±1% in PWM mode - ensures reliable operation of voltage-sensitive digital logic and analog interfaces. |
| Quiescent Current | 32 μA (both channels active, no load, PFM enabled) - extends battery life in always-on or low-duty-cycle portable devices. |
| Shutdown Current | 1.2 μA - minimizes battery drain during system sleep or powered-off states. |
| Package | 10-pin VSON (3 mm × 3 mm, 0.5 mm pitch) - thermally enhanced leadless package with exposed PowerPAD™ for efficient heat dissipation. |
Pinout & Package
TPS62404DRCT is housed in a 10-pin VSON package (3.00 mm × 3.00 mm body, 0.5 mm pitch) with an exposed thermal pad (PowerPAD™) that must be soldered to PCB ground for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ADJ2 | Converter 2 feedback adjust | Must be directly connected to VOUT2 in fixed-output versions (e.g., TPS62404); not used for resistor programming. |
| 2 - MODE/DATA | Mode control & serial interface | Low = auto PFM/PWM mode; high = forced PWM; also serves as EasyScale™ one-wire interface for runtime voltage adjustment. |
| 3 - VIN | Main power input | Supplies both converters; accepts 2.5–6 V; requires local 10-μF ceramic decoupling near pin. |
| 4 - FB1 | Converter 1 feedback sense | Direct connection to VOUT1; internally tied to precision 600-mV reference for 1.2-V output calibration. |
| 5 - DEF_1 | Converter 1 default voltage select | Digital input: low = 1.2 V (TPS62404), high = alternate default (not used in this variant); sets register selection for EasyScale™. |
| 6 - SW1 | Converter 1 power switch node | Connects to 2.2-μH inductor; carries high di/dt switching current; requires short, low-inductance layout to SW1-to-GND path. |
| 7 - EN1 | Converter 1 enable | Active-high digital control; independent startup/shutdown of Channel 1; must not float (pull down if unused). |
| 8 - GND | Power and signal ground | Common return for both converters; connects to exposed PowerPAD™; requires low-impedance plane under package. |
| 9 - EN2 | Converter 2 enable | Active-high digital control; independent startup/shutdown of Channel 2; supports staggered power sequencing. |
| 10 - SW2 | Converter 2 power switch node | Connects to second 2.2-μH inductor; 180° out-of-phase with SW1 to reduce input ripple current magnitude by ~30%. |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase operation | Reduces peak-to-peak input ripple current by up to 30%, allowing smaller input bulk capacitance and lower EMI. |
| EasyScale™ one-pin interface | Enables real-time reconfiguration of both output voltages without additional GPIOs or I²C lines - critical for DVFS in mobile processors. |
| 100% duty cycle capability | Supports ultra-low dropout operation (e.g., VOUT = 3.3 V from VIN = 3.4 V), extending usable battery range in deep discharge conditions. |
| Internal soft-start | Controls VOUT ramp rate (750 μs to 95% of target) to limit inrush current and prevent supply droop on shared rails. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature and resumes only after cooling to ≤130°C - prevents sustained overheating in enclosed designs. |
| Independent enable inputs | EN1 and EN2 allow precise power sequencing (e.g., core before I/O) and selective rail disabling to meet system-level power states. |
Applications
| Smartphone Application Processor Core Supply | Portable Media Player I/O Rail |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring dynamically scaled 1.2 V supply with fast transient response during burst processing. IC Role / Device Role / Timing Role: Dual-channel buck regulator providing tightly regulated core voltage (Ch1) and memory/I/O voltage (Ch2) with synchronized 2.25-MHz switching. Use Value: Enables OMAP™-class DVFS using EasyScale™ interface while maintaining ±1% output accuracy and <750 μs soft-start ramp time. |
Use Scenario: Supplies 3.3 V to SD card interface, USB PHY, and display driver in battery-operated media players. IC Role / Device Role / Timing Role: High-current (600 mA) secondary buck channel delivering stable I/O rail with 180° phase shift to minimize shared input capacitor stress. Use Value: Reduces input ripple current by ~30% versus single-channel solution, permitting smaller 10-μF ceramic input cap instead of larger tantalum. |
| Low-Power DSP System Power | Digital Camera Baseband Processor |
Use Scenario: Powers TI C5000/C6000 DSP cores and peripherals in handheld test equipment with strict battery life requirements. IC Role / Device Role / Timing Role: Dual-rail converter supporting independent enable sequencing (EN1 before EN2) and ultra-low 32-μA quiescent current in PFM mode. Use Value: Extends operational runtime by >15% versus non-PFM alternatives under intermittent DSP workload profiles. |
Use Scenario: Delivers 1.2 V core and 3.3 V sensor interface power in compact digital cameras with rapid on/off cycling. IC Role / Device Role / Timing Role: Fast-starting (170 μs tstart) dual converter enabling sub-200-ms system wake-up from deep sleep. Use Value: Meets camera "instant-on" requirement via 100% duty cycle operation and minimal soft-start delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62403DRCT | Fixed outputs: 1.575 V / 400 mA (Ch1) and 2.8 V / 600 mA (Ch2); same pinout, package, and feature set. | Targets legacy OMAP variants requiring 1.575-V core and 2.8-V I/O; lacks 3.3-V compatibility for newer peripherals. | Select TPS62403DRCT only when matching legacy 1.575 V/2.8 V rail requirements; not drop-in for 1.2 V/3.3 V systems. |
| TPS62402DRCT | Fixed outputs: 1.2 V / 400 mA (Ch1) and 3.3 V / 600 mA (Ch2) - identical VOUT specs; differs only in DEF_1 default mapping and register contents. | No functional difference in output behavior or electrical performance; register defaults differ but are overwritable via EasyScale™. | TPS62402DRCT is electrically identical to TPS62404DRCT for all hardware-level design purposes; interchangeability confirmed per TI SLVS681F Rev F. |
Compared with TPS62403DRCT, TPS62404DRCT provides correct 3.3-V I/O rail compatibility for modern peripherals; compared with TPS62402DRCT, it offers identical performance with minor register initialization differences irrelevant to most applications.
Availability
TPS62404DRCT is available at Aetrix Electronics and suitable for smartphone application processor core supplies, portable media player I/O rails, and low-power DSP system power requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS62404DRCT 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 company specializing in analog, embedded processing, and power management technologies, with decades of leadership in high-efficiency DC-DC conversion.
The TPS6240x product line was engineered specifically for battery-powered portable electronics - delivering dual-output, high-frequency, low-quiescent-current step-down conversion in ultra-compact packages for space- and energy-constrained designs.
FAQ
What are the fixed output voltages of the TPS62404DRCT?
The TPS62404DRCT delivers fixed output voltages of 1.2 V on Channel 1 (400 mA maximum) and 3.3 V on Channel 2 (600 mA maximum). These values are factory-programmed and confirmed in TI's SLVS681F datasheet Revision F, Table 5 ("Device Options") - DEF_1 = Low selects the 1.2 V / 3.3 V configuration. No external resistor network is required for voltage setting.
Does the TPS62404DRCT support dynamic voltage scaling (DVS)?
Yes, the TPS62404DRCT supports real-time dynamic voltage scaling via its EasyScale™ one-pin serial interface on the MODE/DATA pin. This allows runtime adjustment of both output voltages without additional communication lines - a key feature for OMAP™ and low-power DSP applications where TPS62404DRCT is commonly deployed.
What is the recommended inductor value for the TPS62404DRCT?
The recommended inductor value for the TPS62404DRCT is 2.2 μH for both channels, as specified in TI's SLVS681F datasheet Section 7.5 ("Electrical Characteristics") and Figure 22 (efficiency curves). This value balances size, efficiency, and transient response across the full 2.5–6 V input range and 0–600 mA load range.
How does the 180° out-of-phase operation benefit the TPS62404DRCT design?
The 180° out-of-phase switching between SW1 and SW2 in the TPS62404DRCT reduces input capacitor RMS current by approximately 30%, lowering thermal stress and permitting smaller, lower-ESR ceramic input capacitors (e.g., 10 μF instead of larger tantalum). This directly improves PCB area efficiency and EMI profile in dense portable layouts.
Is the TPS62404DRCT pin-compatible with other TPS6240x family members?
Yes, the TPS62404DRCT is fully pin-compatible with all TPS6240x variants in the DRC (VSON-10) package, including TPS62400–TPS62403. Pin functions, layout, thermal pad connection, and PCB footprint are identical - enabling design reuse and simplified BOM management across different output voltage configurations.
TPS62404DRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable (Fixed)
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V, 1.9V (3.3V)
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA, 600mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62404DRCT FAQ
1.How can I place an order for TPS62404DRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62404DRCT 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 TPS62404DRCT reliable?
The price and inventory of TPS62404DRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62404DRCT is usually 5 days.
3.What payment methods are accepted for TPS62404DRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62404DRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62404DRCT?
TPS62404DRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62404DRCT 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 TPS62404DRCT?
For technical support, including TPS62404DRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62404DRCT requirements.
6.How does Aetrix verify that TPS62404DRCT is sourced from the original manufacturer or authorized distributors?
All TPS62404DRCT 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 TPS62404DRCT meets industry standards.
7.What is the process for return or replacement of TPS62404DRCT?
All TPS62404DRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62404DRCT, 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 TPS62404DRCT part is unused and in its original packaging.
Return procedure for TPS62404DRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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