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Texas Instruments TPS62042DRCRG4
- Part No.:
- TPS62042DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62042DRCRG4.pdf
- Description:
- IC REG BUCK 1.5V 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,733
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Product details
Overview
TPS62042DRCRG4 from Texas Instruments is a fixed-output 1.5 V, 1.2 A synchronous step-down DC-DC converter in a 10-pin QFN 3×3 mm PowerPAD™ package, operating at 1.25 MHz with 18 µA quiescent current and 95% peak efficiency - designed for Li-ion–powered portable systems including smart phones and USB modems.
For engineers reviewing the TPS62042DRCRG4 datasheet, TPS62042DRCRG4 pinout, TPS62042DRCRG4 application, or TPS62042DRCRG4 equivalent, key selection criteria include its fixed 1.5 V output, power save mode (PFM/PWM auto-switching), thermal shutdown, short-circuit protection, and compatibility with low-ESR ceramic capacitors (22 µF input/output) and 6.2 µH inductors.
Technical Context
The TPS62042DRCRG4 implements a voltage-mode synchronous buck architecture with input voltage feed-forward, enabling fast line/load transient response and stable operation with small ceramic capacitors. Its internal 0.5 V reference and fixed feedback network set the regulated 1.5 V output without external resistors.
It features dual-mode operation: forced PWM (via MODE pin high) for noise-sensitive applications, and automatic PFM/PWM transition below ~10–50 mA load to sustain >85% efficiency down to light loads. The 100% duty cycle mode supports ultra-low dropout during battery depletion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±3% over full load (0–1.2 A) and input range (2.5–6.0 V) |
| Max Output Current | 1.2 A continuous - supports DSPs, CPUs, and RF ICs in portable devices |
| Switching Frequency | 1.25 MHz nominal (1–1.5 MHz range) - enables compact 3×3 mm layout with 6.2 µH inductor |
| Quiescent Current | 18 µA typical in power save mode - extends battery life in always-on subsystems |
| Input Voltage Range | 2.5 V to 6.0 V - compatible with single-cell Li-ion (2.7–4.2 V), 3×NiMH (3.6 V), or 5 V USB sources |
| Efficiency Peak | 95% at 600 mA/3.6 VIN/1.5 VOUT - minimizes thermal rise in sealed enclosures |
| Thermal Shutdown | Activates at 150°C junction temperature - protects PCB and adjacent components |
Pinout & Package
TPS62042DRCRG4 uses a thermally enhanced 10-pin QFN (3 mm × 3 mm, 0.5 mm pitch) with exposed PowerPAD™ soldered to PCB ground for low RθJA (48.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Pull high to VIN to activate regulator; pull low to GND for <0.1 µA shutdown current |
| 2,3 - VIN | Main power input | Accepts 2.5–6.0 V; requires local 22 µF low-ESR ceramic capacitor |
| 4 - GND | Analog ground reference | Separate from PGND; connects to FB divider ground and signal return paths |
| 5 - FB | Feedback node | Internally tied to 1.5 V output - no external resistor divider needed |
| 6 - MODE | Operating mode select | Low = auto PFM/PWM; high = forced fixed-frequency PWM (625 kHz or 1.25 MHz) |
| 7,8 - SW | Power switch node | Connects to inductor; carries high di/dt - must be routed short and shielded |
| 9,10 - PGND | Power ground return | High-current return path for MOSFETs; ties directly to PowerPAD™ and input/output caps |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal at light load, reducing voltage droop during 0→1.2 A transients |
| 100% Duty Cycle Mode | Enables regulation down to VIN ≈ VOUT + ILOAD × rDS(on), extending usable battery range |
| Internal Softstart | Digital ramp limits inrush current - prevents input sag on weak sources like coin cells or USB ports |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VOUT < 0.75 V, limiting fault energy |
| Thermal Shutdown with Hysteresis | Shuts down at 150°C; resumes at ~135°C - prevents cycling during sustained overload |
Applications
| Smartphone Core Rail | USB-Powered Modem |
|---|---|
Use Scenario: Powers ARM Cortex-A series application processor core (VDD_CORE) from single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary 1.5 V step-down regulator delivering up to 1.2 A with dynamic load tracking. Use Value: Power save mode maintains >88% efficiency at 10 mA idle current, extending standby time without manual mode switching. |
Use Scenario: Supplies 1.5 V logic rail to ADSL/VDSL PHY and microcontroller in USB-powered broadband modem. IC Role / Device Role / Timing Role: Input-filtered buck converter accepting 5 V USB input and rejecting conducted noise via 1.25 MHz fixed frequency. Use Value: Forced PWM mode (MODE = high) ensures clean spectral profile for EMI compliance in Class B emissions testing. |
| Portable Medical Sensor Hub | Industrial Handheld Terminal |
Use Scenario: Powers low-power ADC, BLE SoC, and analog front-end in battery-operated glucose monitor. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with ultra-low quiescent current for multi-week battery life. Use Value: 18 µA IQ and 95% peak efficiency enable CR2032 or AAA primary cell operation for >6 months at 100 µA avg load. |
Use Scenario: Generates 1.5 V supply for FPGA configuration and interface logic in ruggedized handheld data collector. IC Role / Device Role / Timing Role: Robust DC-DC with thermal shutdown and short-circuit protection for unattended field deployment. Use Value: PowerPAD™ package and 150°C thermal shutdown ensure reliability in 85°C ambient industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62042DRCT | Same silicon, tape-and-reel variant (3,000 pcs/reel vs. 250 pcs/reel); identical electrical specs and pinout | No functional difference - used for high-volume automated assembly | Select DRCT for SMT production; DRCRG4 is standard reel for prototyping and low-volume builds |
| TPS62130ARGTR | 3–17 V input, 3 A output, 2.5 V–6 V adjustable output; higher current, wider VIN, different pinout (16-pin VQFN) | Not pin-compatible; requires PCB redesign but supports higher-power applications and wider input sources | Choose when scaling beyond 1.2 A or requiring >6 V input (e.g., 12 V industrial bus) |
Compared with TPS62042DRCT, the TPS62042DRCRG4 offers identical performance in a smaller packaging format optimized for evaluation and low-volume use; versus TPS62130ARGTR, it trades higher current and input range for lower cost, smaller footprint, and tighter integration in space-constrained Li-ion designs.
Availability
TPS62042DRCRG4 is available at Aetrix Electronics and suitable for smartphone power management, USB-powered modem design, and portable medical sensor applications requiring stable component supply across product lifecycles.
Supply support for TPS62042DRCRG4 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.
The TPS6204x family was engineered for battery-powered portable electronics - delivering high efficiency across wide load ranges while minimizing solution size and EMI through integrated synchronous switches and advanced power-save control.
FAQ
What is the output voltage tolerance of the TPS62042DRCRG4 over temperature and load?
The TPS62042DRCRG4 delivers a fixed 1.5 V output with ±3% tolerance across the full operating range: −40°C to 85°C ambient, 0–1.2 A load, and 2.5–6.0 V input. This specification is guaranteed by internal trimming of the 0.5 V reference and feedback network, eliminating need for external calibration.
Does the TPS62042DRCRG4 require external feedback resistors?
No. The TPS62042DRCRG4 integrates the feedback divider for its fixed 1.5 V output - pin 5 (FB) is internally connected to the output. External resistors are unnecessary and must not be added, unlike the adjustable TPS62040 variant.
How does the MODE pin affect efficiency and noise performance in the TPS62042DRCRG4?
When MODE is pulled low, the TPS62042DRCRG4 enters automatic PFM/PWM mode - achieving >85% efficiency at 1 mA load. When MODE is pulled high, it forces fixed-frequency PWM at 1.25 MHz, improving EMI filtering predictability but reducing light-load efficiency to ~70% at 1 mA.
What thermal derating applies to the TPS62042DRCRG4 at 85°C ambient?
At 85°C ambient with standard JEDEC 2-layer board and PowerPAD™ soldered to 1-in² copper, the TPS62042DRCRG4 sustains 821 mW power dissipation - corresponding to ~1.0 A continuous output at 3.6 VIN/1.5 VOUT. Full 1.2 A is rated only up to 70°C ambient per datasheet derating curves.
Can the TPS62042DRCRG4 operate with input voltage below 2.5 V?
No. The TPS62042DRCRG4 has an absolute minimum input voltage of 2.5 V per recommended operating conditions. Below this, undervoltage lockout (UVLO) disables switching - activation threshold is 1.5–2.3 V, but reliable regulation requires ≥2.5 V input.
TPS62042DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- 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):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.2A
- Frequency - Switching:
- 1.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62042DRCRG4 FAQ
1.How can I place an order for TPS62042DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62042DRCRG4 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 TPS62042DRCRG4 reliable?
The price and inventory of TPS62042DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62042DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS62042DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62042DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62042DRCRG4?
TPS62042DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62042DRCRG4 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 TPS62042DRCRG4?
For technical support, including TPS62042DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62042DRCRG4 requirements.
6.How does Aetrix verify that TPS62042DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62042DRCRG4 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 TPS62042DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS62042DRCRG4?
All TPS62042DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62042DRCRG4, 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 TPS62042DRCRG4 part is unused and in its original packaging.
Return procedure for TPS62042DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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