My Inquiry
My Account
Texas Instruments TPS62042DGQG4
- Part No.:
- TPS62042DGQG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62042DGQG4.pdf
- Description:
- IC REG BUCK 1.5V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62042DGQG4 from Texas Instruments is a fixed-output 1.5 V, 1.2 A synchronous step-down DC-DC converter in a 10-pin MSOP PowerPad™ package, operating at 1.25 MHz with 95% peak efficiency and 18 µA quiescent current-designed for Li-ion–powered portable devices such as smart phones and PDAs.
For engineers reviewing the TPS62042DGQG4 datasheet, TPS62042DGQG4 pinout, TPS62042DGQG4 application, or TPS62042DGQG4 equivalent, key selection criteria include its fixed 1.5 V output, power-save mode operation down to 18 µA IQ, thermal shutdown at 150°C, and compatibility with 22 µF ceramic input/output capacitors and 6.2 µH inductors.
Technical Context
The TPS62042DGQG4 implements a voltage-mode synchronous buck architecture with input voltage feed-forward, enabling fast line/load transient response and stable regulation across 2.5 V–6.0 V input while delivering up to 1.2 A. Its dual-MOSFET switch stage features P-channel (115 mΩ typical @ 3.6 V) and N-channel (85 mΩ typical @ 3.6 V) power FETs integrated on-die.
It supports automatic PWM/PFM mode switching via the MODE pin: low enables power-save mode (625 kHz light-load frequency), high forces fixed 1.25 MHz PWM for noise-sensitive applications. Internal softstart limits inrush current, and 100% duty-cycle operation extends battery runtime near dropout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±3% over load (0–1.2 A) and temperature (−40°C to 85°C) |
| Max Output Current | 1.2 A continuous; supports transient peaks up to 1.85 A current limit |
| Switching Frequency | 1.25 MHz nominal (PWM mode); drops to 625 kHz in power-save mode |
| Input Voltage Range | 2.5 V to 6.0 V - compatible with single Li-ion (2.7–4.2 V) and 3-cell NiMH/NiCd |
| Quiescent Current | 18 µA typical in active operation; 0.1 µA in shutdown (EN = GND) |
| Efficiency Peak | 95% at 600 mA load, VO = 1.5 V, VI = 3.6 V, MODE = low |
| Thermal Shutdown | Activates at 150°C junction temperature; resumes after cooldown to ~150°C |
Pinout & Package
TPS62042DGQG4 uses the 10-pin MSOP PowerPad™ package (DGQ), requiring the exposed thermal pad to be soldered to PCB ground for thermal performance (RθJA = 60°C/W). Pin 1 is EN; pins 2/3 are VIN; pin 4 is GND; pin 5 is FB (internally tied to 1.5 V reference); pins 6 and 9/10 are MODE and PGND respectively; pins 7/8 are SW outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Pull high to VIN to activate; pull low to GND for 0.1 µA shutdown; must not float |
| 2,3 - VIN | Main power input | Accepts 2.5–6.0 V; requires 22 µF low-ESR ceramic capacitor placed adjacent to pins |
| 4 - GND | Analog ground reference | Separate from PGND; connects to feedback network and control circuitry ground plane |
| 5 - FB | Feedback node | Internally connected to 0.5 V reference; no external divider needed for fixed 1.5 V output |
| 6 - MODE | Operating mode select | Low = auto PWM/PFM; high = forced fixed-frequency PWM; controls ripple/noise trade-off |
| 7,8 - SW | Power switch outputs | Drains of internal P/N-channel MOSFETs; connect to inductor; keep trace short and low-inductance |
| 9,10 - PGND | Power ground return | High-current return path for switches; tie directly to PowerPad and input/output capacitor grounds |
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 operation | Enables regulation down to VI ≈ VO + IO × rDS(on), extending usable battery range in portable systems |
| Internal softstart | Digital ramp-up limiting inrush current; eliminates need for external softstart components |
| Short-circuit protection | Reduces switching frequency and current limit to 50% when VO < 50% of nominal, active during startup |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction; resumes operation only after cooldown, preventing thermal cycling damage |
Applications
| Smartphone Core Rail | PDA DSP Supply |
|---|---|
Use Scenario: Powering ARM-based application processors in compact smartphones powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary 1.5 V core supply regulator delivering up to 1.2 A with fast transient response to CPU burst loads. Use Value: 95% efficiency and 18 µA quiescent current extend talk time; dynamic voltage positioning minimizes voltage droop during 0→1.2 A load steps. | Use Scenario: Providing stable 1.5 V rail to low-voltage DSPs in handheld PDAs with tight board space and thermal constraints. IC Role / Device Role / Timing Role: Synchronous buck converter managing battery-to-DSP conversion with minimal external components. Use Value: MSOP PowerPad package enables compact layout; 1.25 MHz switching allows small 6.2 µH inductor and 22 µF ceramic caps. |
| USB-Powered Modem | Notebook Subsystem Rail |
Use Scenario: Regulating 5 V USB input down to 1.5 V for baseband ICs in portable broadband modems. IC Role / Device Role / Timing Role: Step-down converter interfacing with USB 5 V bus while meeting strict EMI and efficiency requirements. Use Value: Forced PWM mode (MODE = high) ensures fixed 1.25 MHz switching for predictable EMI filtering; 6.0 V max input accommodates USB tolerance. | Use Scenario: Generating 1.5 V for memory interfaces or I/O controllers in subnotebook computers using 3-cell NiMH batteries. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator supporting variable battery input (3.6–4.5 V) and low-noise digital loads. Use Value: Power-save mode maintains >85% efficiency at 10 mA standby; thermal shutdown protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62042DRCR | Same electrical specs; QFN-10 (3×3 mm) package instead of MSOP-10; lower RθJA (48.7°C/W) | Better thermal performance in space-constrained layouts; requires different PCB footprint and reflow profile | Select DRCR for higher power density or improved thermal management; DGQG4 preferred where MSOP is legacy-qualified |
| TPS62130ARGTR | 3–17 V input; 1.2 A; adjustable/fixed outputs; 2.5 MHz switching; 17 µA IQ; WSON-10 package | Wider input range suits industrial or multi-battery systems; higher frequency enables smaller magnetics | Choose ARGTR for designs needing >6 V input or 2.5 MHz operation; DGQG4 remains optimal for Li-ion–centric 2.5–6 V apps |
Compared with TPS62042DRCR and TPS62130ARGTR, the TPS62042DGQG4 offers best-in-class efficiency and ultra-low IQ specifically optimized for single-cell Li-ion portable systems, with proven layout compatibility in MSOP-based designs.
Availability
TPS62042DGQG4 is available at Aetrix Electronics and suitable for smartphone core rails, PDA DSP supplies, USB-powered modems, and notebook subsystem rails requiring stable component supply, long-term lifecycle support, and TI-qualified production lots.
Supply support for TPS62042DGQG4 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.
The TPS6204x product line was designed specifically for battery-powered portable electronics, delivering high efficiency, ultra-low quiescent current, and compact integration for Li-ion and multi-cell battery systems.
FAQ
What is the output voltage accuracy of the TPS62042DGQG4 over temperature and load?
The TPS62042DGQG4 delivers a fixed 1.5 V output with ±3% accuracy across the full operating range: −40°C to 85°C ambient temperature and 0 mA to 1.2 A load current. This specification is guaranteed by internal trimming of the 0.5 V reference and feedback amplifier, and confirmed in the Electrical Characteristics table under "Fixed output voltage" for TPS62042.
Does the TPS62042DGQG4 require external feedback resistors?
No, the TPS62042DGQG4 does not require external feedback resistors. As a fixed-output variant, its FB pin is internally connected to generate 1.5 V. External resistor dividers are only needed for the adjustable TPS62040; using them with TPS62042DGQG4 would disrupt regulation and is not supported.
What is the recommended inductor value for the TPS62042DGQG4?
The recommended inductor value for the TPS62042DGQG4 is 6.2 µH, as validated in the Typical Application Circuit and Inductor Selection section. Sumida CDRH5D28-6R2 is the reference part. Values from 4.7 µH to 6.2 µH are acceptable depending on ripple and transient requirements, but 6.2 µH balances efficiency, size, and transient response per TI's design guidance.
How does the MODE pin affect efficiency and noise performance in the TPS62042DGQG4?
When MODE = low, the TPS62042DGQG4 enters power-save mode at light loads, reducing switching frequency to ~625 kHz and achieving >85% efficiency at 10 mA. When MODE = high, it operates in fixed 1.25 MHz PWM mode, improving EMI filter predictability but lowering light-load efficiency by ~5–10%. The choice depends on system noise vs. battery life priorities.
Can the TPS62042DGQG4 operate with input voltage below 2.5 V?
No, the TPS62042DGQG4 has a minimum specified input voltage of 2.5 V per Recommended Operating Conditions. Operation below this violates absolute maximum ratings and may cause undervoltage lockout activation or unstable regulation. For sub-2.5 V inputs, consider TI's TPS62840 or similar ultra-low-input buck converters.
TPS62042DGQG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-HVSSOP
TPS62042DGQG4 FAQ
1.How can I place an order for TPS62042DGQG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62042DGQG4 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 TPS62042DGQG4 reliable?
The price and inventory of TPS62042DGQG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62042DGQG4 is usually 5 days.
3.What payment methods are accepted for TPS62042DGQG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62042DGQG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62042DGQG4?
TPS62042DGQG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62042DGQG4 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 TPS62042DGQG4?
For technical support, including TPS62042DGQG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62042DGQG4 requirements.
6.How does Aetrix verify that TPS62042DGQG4 is sourced from the original manufacturer or authorized distributors?
All TPS62042DGQG4 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 TPS62042DGQG4 meets industry standards.
7.What is the process for return or replacement of TPS62042DGQG4?
All TPS62042DGQG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62042DGQG4, 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 TPS62042DGQG4 part is unused and in its original packaging.
Return procedure for TPS62042DGQG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62042DGQG4 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
