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Texas Instruments TPS62401DRCT
- Part No.:
- TPS62401DRCT
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62401DRCT.pdf
- Description:
- IC REG BUCK PROG/1.8V DL 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,329
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Product details
Overview
TPS62401DRCT from Texas Instruments is a dual synchronous step-down DC-DC converter IC optimized for battery-powered portable systems, delivering 400 mA on Channel 1 (1.575 V default) and 600 mA on Channel 2 (1.8 V fixed), operating from 2.5 V to 6 V input with 2.25 MHz fixed switching frequency and ±1% output voltage accuracy in PWM mode.
For engineers reviewing the TPS62401DRCT datasheet, TPS62401DRCT pinout, TPS62401DRCT application, or TPS62401DRCT equivalent, key selection considerations include dual-rail dynamic voltage scaling support via DEF_1 pin, EasyScale™ one-wire interface capability, 180° out-of-phase operation for reduced input ripple, and 32 μA typical quiescent current across both converters in power-save mode.
Technical Context
The TPS62401DRCT integrates two independent voltage-mode synchronous buck regulators sharing a single 2.25 MHz oscillator with 180° phase shift-reducing input RMS current and enabling compact filter design. Each channel features internal compensation, integrated P/N-MOSFETs (RDS(on) = 280/200 mΩ typ), and dual current-limit protection (P-MOS: 0.68–0.92 A; N-MOS: 0.85–1.15 A).
Operation supports three functional modes: automatic PFM/PWM transition (MODE/DATA = GND), forced PWM (MODE/DATA = high), and shutdown (EN1/EN2 = low). Output voltage selection for Channel 1 is digital (DEF_1 = low → 1.575 V; DEF_1 = high → 1.1 V); Channel 2 is fixed at 1.8 V with ADJ2 tied directly to VOUT2. Both outputs support EasyScale™ real-time reprogramming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.5 V to 6 V - supports single-cell Li-ion (3.0–4.2 V) and regulated 3.3 V/5 V rails without external LDO pre-regulation. |
| Output Channels | Two independent synchronous buck converters - enables split-rail power for core + I/O domains in processors or SoCs. |
| VOUT1 Default | 1.575 V (DEF_1 = low) - matches common DSP/ARM core voltage requirements; selectable to 1.1 V via DEF_1 high. |
| VOUT2 Fixed | 1.8 V - targets memory interfaces (SDRAM, NAND), USB PHYs, and logic I/O banks requiring stable mid-rail supply. |
| Switching Frequency | 2.25 MHz (±12.5%) - allows use of 2.2 μH inductors and 10–20 μF ceramic capacitors, minimizing solution footprint. |
| Quiescent Current | 32 μA typical (both channels active, no load, PFM mode) - extends battery life in always-on subsystems like RTC or sensor hubs. |
| Shutdown Current | 1.2 μA typical - ensures negligible drain during system sleep or transport storage. |
| Accuracy (PWM) | ±1% over line/load/temperature - eliminates need for post-regulation trimming in precision analog or RF subsystems. |
Pinout & Package
TPS62401DRCT is housed in a thermally enhanced 10-pin VSON package (3.0 mm × 3.0 mm, 0.5 mm pitch) with exposed PowerPAD™ for low thermal resistance (RθJA = 45.9 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 3) | Input power supply | Accepts 2.5–6 V; requires local 10 μF ceramic decoupling adjacent to pin for EMI suppression and transient response. |
| EN1 (Pin 7), EN2 (Pin 9) | Independent enable inputs | Active-high control: enables soft-start sequencing per channel; floating pins must be pulled high/low to avoid undefined state. |
| DEF_1 (Pin 5) | Digital output voltage selector | Selects VOUT1 between 1.575 V (low) or 1.1 V (high); internal pull-down not provided - external bias required. |
| MODE/DATA (Pin 2) | Multi-function control pin | Configures PFM/PWM mode (GND/high) and serves as bidirectional EasyScale™ data line with open-drain ACK. |
| FB1 (Pin 4) | Feedback input for Channel 1 | Direct connection to VOUT1; internal resistor divider sets regulation point - no external resistors needed for fixed versions. |
| ADJ2 (Pin 1) | Adjust input for Channel 2 | Must be shorted to VOUT2 in TPS62401DRCT (fixed 1.8 V); enables EasyScale™ reprogramming but prohibits external resistor networks. |
| SW1 (Pin 6), SW2 (Pin 10) | Power switch nodes | Connect to 2.2 μH shielded inductors; require tight layout with Kelvin return paths to minimize switching noise coupling. |
| GND (Pin 8) + PowerPAD™ | Ground reference & thermal path | Single-point grounding mandatory; PowerPAD™ must be soldered to ≥200 mm² copper pour for thermal performance and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase operation | Reduces input capacitor RMS current by ~30%, allowing smaller 10–22 μF X5R/X7R ceramics instead of larger tantalum or polymer types. |
| EasyScale™ one-pin serial interface | Enables real-time VOUT1/VOUT2 adjustment without additional GPIOs or I²C lines - critical for DVFS in OMAP™/DSP applications. |
| 100% duty cycle capability | Supports ultra-low dropout operation (e.g., VOUT = 3.3 V from VIN = 3.4 V), eliminating brownout during battery sag in portable devices. |
| Integrated current-limit protection | Dual threshold (P-MOS + N-MOS) provides robust short-circuit recovery without latch-off - sustains >10⁶ fault cycles in consumer wearables. |
| Thermal shutdown with 20°C hysteresis | Protects against sustained overload or poor PCB heatsinking; auto-recovery prevents system lockup during transient thermal events. |
| Pin-selectable DVS for Channel 1 | Hardware-level voltage selection (1.575 V / 1.1 V) enables boot-time configuration without firmware dependency - simplifies BOM for multi-platform designs. |
Applications
| Smartphone Application Processor Core Supply | Portable Media Player Audio Codec Bias |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring dynamically scaled voltage (1.1–1.575 V) based on workload. IC Role / Device Role / Timing Role: Dual-channel buck regulator providing independent, sequenced, and synchronized power rails with sub-200 μs startup time. Use Value: Enables energy-proportional computing via hardware-triggered DVS; 95% peak efficiency extends talk time by >12% vs. discrete solutions. |
Use Scenario: Supplies clean, low-noise 1.8 V bias to stereo DAC/ADC and Class-D amplifier in battery-operated players. IC Role / Device Role / Timing Role: Fixed-output second channel delivers stable rail; 2.25 MHz switching avoids audible band (20 Hz–20 kHz) interference. Use Value: Eliminates need for separate LDO post-regulator - reduces BoM count by 1 component and saves 12 mm² PCB area. |
| OMAP™ Platform Memory Interface | Low-Power IoT Sensor Hub |
Use Scenario: Generates 1.575 V for LPDDR2 SDRAM I/O and 1.8 V for NAND flash controller in OMAP-based industrial tablets. IC Role / Device Role / Timing Role: Dual-rail source with 180° phase shift minimizes shared input rail ripple - critical for signal integrity in high-speed memory buses. Use Value: Reduces input capacitance requirement by 40% versus in-phase dual bucks, lowering total solution cost and size. |
Use Scenario: Powers ultra-low-power MCU (e.g., MSP430), BLE radio, and environmental sensors in coin-cell–powered asset trackers. IC Role / Device Role / Timing Role: High-efficiency buck (92% @ 10 mA) with 1.2 μA shutdown current preserves battery for >5 years in deep-sleep mode. Use Value: Enables direct battery connection (2.5–3.6 V) without intermediate charge pump - improves end-of-life runtime by 22%. |
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 |
|---|---|---|---|
| TPS62400DRCT | Adjustable outputs (0.6–VIN) via external resistors on both channels; lacks factory-programmed defaults. | Suitable when flexible voltage tuning is required across multiple platforms; requires additional BOM components (resistors, caps). | Choose TPS62400DRCT only if programmability outweighs cost and layout overhead of external feedback networks. |
| TPS62403DRCT | Fixed VOUT1 = 1.575 V / VOUT2 = 2.8 V; same pinout and feature set as TPS62401DRCT. | Targets applications needing higher second-rail voltage (e.g., display bias, camera modules) instead of 1.8 V logic rail. | Select TPS62403DRCT when interfacing with 2.8 V peripherals; verify compatibility with existing PCB layout and firmware voltage tables. |
Compared with TPS62401DRCT, TPS62400DRCT trades factory-set simplicity for full adjustability at higher component count, while TPS62403DRCT maintains identical integration and footprint but shifts VOUT2 to 2.8 V - making it a drop-in alternative only for 2.8 V–dependent subsystems.
Availability
TPS62401DRCT is available at Aetrix Electronics and suitable for smartphone power management, portable media player subsystems, and OMAP™ platform designs requiring stable dual-rail DC-DC conversion with minimal board space and high light-load efficiency.
Supply support for TPS62401DRCT 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 and industrial applications.
The TPS6240x product line was designed specifically for space-constrained, battery-powered portable electronics requiring dual independent power rails with dynamic voltage scaling, low quiescent current, and minimal external components.
FAQ
What is the default output voltage configuration of the TPS62401DRCT?
The TPS62401DRCT has factory-configured fixed outputs: Channel 1 defaults to 1.575 V when DEF_1 is pulled low, and Channel 2 is fixed at 1.8 V. The ADJ2 pin must be shorted to VOUT2, and FB1 connects directly to VOUT1 - no external resistors are required for basic operation. This configuration targets core + I/O rail requirements in OMAP™ and similar processors.
Can the TPS62401DRCT operate from a single 3.7-V Li-ion battery throughout its discharge curve?
Yes, the TPS62401DRCT supports input voltages from 2.5 V to 6 V, covering the full discharge range of a single-cell Li-ion battery (3.0 V to 4.2 V nominal, down to 2.5 V cutoff). Its 100% duty-cycle capability ensures regulation even at end-of-discharge (e.g., 1.8 V output from 2.5 V input), maintaining system uptime without brownout.
Does the TPS62401DRCT support independent enable control for each output channel?
Yes, the TPS62401DRCT provides dedicated enable pins: EN1 (Pin 7) controls Channel 1 and EN2 (Pin 9) controls Channel 2. Each pin is active-high and initiates independent soft-start sequencing. This allows staggered power-up (e.g., powering memory before processor core) and selective shutdown to reduce system standby current.
How does the MODE/DATA pin function in the TPS62401DRCT?
The MODE/DATA pin (Pin 2) serves two roles: (1) mode selection - pulled low for automatic PFM/PWM transition, high for forced PWM; (2) EasyScale™ serial interface - bidirectional one-wire communication for real-time VOUT1/VOUT2 reprogramming. It features open-drain ACK signaling and requires an external pullup resistor (typically 10 kΩ).
What thermal management provisions does the TPS62401DRCT include?
The TPS62401DRCT uses a VSON package with an exposed PowerPAD™ thermally connected to PCB ground. With RθJA = 45.9 °C/W and RθJB = 20.4 °C/W, it requires ≥200 mm² copper pour under the PowerPAD™ and thermal vias to inner layers. Thermal shutdown activates at 150 °C with 20 °C hysteresis, ensuring safe recovery after transient overloads.
TPS62401DRCT 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):
- 1.1V, 1.575V (1.8V)
- 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)
TPS62401DRCT FAQ
1.How can I place an order for TPS62401DRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62401DRCT 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 TPS62401DRCT reliable?
The price and inventory of TPS62401DRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62401DRCT is usually 5 days.
3.What payment methods are accepted for TPS62401DRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62401DRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62401DRCT?
TPS62401DRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62401DRCT 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 TPS62401DRCT?
For technical support, including TPS62401DRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62401DRCT requirements.
6.How does Aetrix verify that TPS62401DRCT is sourced from the original manufacturer or authorized distributors?
All TPS62401DRCT 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 TPS62401DRCT meets industry standards.
7.What is the process for return or replacement of TPS62401DRCT?
All TPS62401DRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62401DRCT, 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 TPS62401DRCT part is unused and in its original packaging.
Return procedure for TPS62401DRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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