My Inquiry
My Account
Texas Instruments TPS62042DGQRG4
- Part No.:
- TPS62042DGQRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62042DGQRG4.pdf
- Description:
- IC REG BUCK 1.5V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,037
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62042DGQRG4 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. It supports single-cell Li-ion or 3-cell NiMH/NiCd battery inputs (2.5 V–6.0 V) and delivers regulated power to low-voltage DSPs and processors in portable computing devices.
For engineers reviewing the TPS62042DGQRG4 datasheet, TPS62042DGQRG4 pinout, TPS62042DGQRG4 application, or TPS62042DGQRG4 equivalent, key selection criteria include its fixed 1.5 V output, Power Save Mode for light-load efficiency, 100% duty cycle dropout operation, thermal shutdown, and short-circuit protection - all validated for battery-powered PDA, smart phone, and notebook subsystems.
Technical Context
The TPS62042DGQRG4 implements a voltage-mode synchronous buck topology with input voltage feed-forward control, enabling fast line/load transient response and stable regulation using only 22 µF ceramic input/output capacitors. Its dual-MOSFET power stage integrates a 115 mΩ P-channel high-side switch and an 85 mΩ N-channel synchronous rectifier.
Operation includes automatic PWM/PFM mode switching via the MODE pin: low enables Power Save Mode (PFM at light loads, ~625 kHz; PWM at heavy loads, 1.25 MHz), while high forces fixed-frequency PWM for noise-sensitive applications. Dynamic voltage positioning maintains ±0.8% output headroom during load transients to minimize voltage droop without large bulk capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±3% over full load and temperature range - eliminates external feedback resistors and simplifies layout. |
| Max Output Current | 1.2 A continuous - sufficient for core logic or I/O rails in PDAs and subnotebooks. |
| Switching Frequency | 1.25 MHz nominal (1–1.5 MHz range) - enables compact 6.2 µH inductors and reduces EMI above AM band. |
| Quiescent Current | 18 µA typical in Power Save Mode - extends battery runtime in standby or low-power states. |
| Input Voltage Range | 2.5 V to 6.0 V - compatible with single Li-ion (2.7–4.2 V), 3×NiMH (3.6 V), or USB 5 V inputs. |
| Efficiency Peak | 95% at 600 mA, VO=1.5 V, VI=3.6 V - minimizes thermal rise in space-constrained portable enclosures. |
| Duty Cycle Max | 100% - sustains regulation down to VIN = VO + IO × rDS(on), extending usable battery voltage range. |
Pinout & Package
The TPS62042DGQRG4 is housed in a thermally enhanced 10-pin MSOP PowerPad™ package (DGQ), requiring the exposed PowerPAD to be soldered to PCB ground for optimal thermal performance (RθJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Pull high to enable; pull low (≤0.4 V) to enter shutdown with 0.1 µA supply current - prevents uncontrolled startup. |
| VIN (Pins 2,3) | Main power input | Accepts 2.5–6.0 V; dual pins reduce trace resistance and improve current handling for 1.2 A loads. |
| GND (Pin 4) | Analog reference ground | Separate from PGND to isolate feedback sensing from high-current return paths - improves regulation accuracy. |
| FB (Pin 5) | Feedback input | Internally tied to 1.5 V output - no external divider needed; pin must be connected directly to output for stability. |
| MODE (Pin 6) | Operating mode select | Pull low for auto PWM/PFM; pull high for forced PWM - enables deterministic EMI filtering in noise-critical systems. |
| SW (Pins 7,8) | Power switch node | Connects to external inductor; dual pins lower parasitic inductance and reduce switching losses. |
| PGND (Pins 9,10) | Power ground return | High-current return path for MOSFETs; must be tied to PowerPAD and kept separate from analog GND. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal during light load, reducing voltage droop by up to 30 mV during 0→1.2 A transients without increasing output capacitance. |
| Internal Softstart | Staged current limiting (ILIM/8 → ILIM/4 → ILIM/2 → full ILIM) prevents input voltage sag during startup from weak sources like coin cells or aging batteries. |
| Thermal Shutdown | Activates at 150°C junction temperature and auto-recovers when TJ falls below threshold - protects against sustained overload or poor heatsinking. |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VO < 50% of nominal - limits fault energy and enables safe recovery after overload removal. |
| Under-Voltage Lockout | Disables switching below 1.5 V VIN - prevents erratic operation during brownout or battery depletion. |
Applications
| Smartphone Application Processor Core Rail | PDA Memory Interface Power |
|---|---|
Use Scenario: Powers ARM-based application processor cores requiring tightly regulated 1.5 V at up to 1.2 A during burst-mode execution. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering dynamic load current with <10 µs transient response and minimal output ripple. Use Value: 95% efficiency at 600 mA extends talk time; Power Save Mode cuts quiescent draw to 18 µA during idle, preserving standby battery life. | Use Scenario: Supplies DDR SDRAM interface voltage in handheld PDAs where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter with integrated softstart and dynamic voltage positioning to meet JEDEC DDR timing margins. Use Value: 100% duty cycle operation sustains regulation down to 1.55 V input, extracting maximum energy from partially discharged Li-ion cells. |
| Notebook Subsystem I/O Rail | USB-Powered Modem Baseband IC |
Use Scenario: Generates 1.5 V for PCIe controller or USB 3.0 PHY logic in ultra-thin notebooks with strict height limits. IC Role / Device Role / Timing Role: Compact, high-frequency buck converter enabling use of 3 mm × 3 mm inductors and 1206-case capacitors. Use Value: 1.25 MHz switching allows small passive components while maintaining >90% efficiency across 10 mA–1.2 A load range. | Use Scenario: Powers baseband processor in USB-powered DSL modems drawing variable current from host-supplied 5 V. IC Role / Device Role / Timing Role: Input-stage regulator stepping 5 V USB down to 1.5 V with low-noise PWM mode selectable via MODE pin. Use Value: Forced PWM mode eliminates audible switching noise and simplifies EMI filter design for FCC/CE compliance. |
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 |
|---|---|---|---|
| TPS62042DRCR | Same electrical specs but in 3×3 mm QFN package with lower RθJA (48.7°C/W) and integrated thermal vias. | Better thermal performance in high-ambient or high-power-density layouts; requires different PCB footprint and reflow profile. | Select DRCR for thermally demanding applications or when board space permits smaller package; DGQR remains optimal for legacy MSOP designs. |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6 V input, adjustable/fixed 1.5 V option, but 2.25 MHz switching and higher 25 µA quiescent current. | Supports higher current loads and faster transient response; less suitable for ultra-low-power standby due to higher IQ. | Choose ARGTR only if >1.2 A output or faster regulation is required; TPS62042DGQRG4 offers superior light-load efficiency for battery longevity. |
Compared with TPS62042DRCR, the TPS62042DGQRG4 trades thermal performance for backward-compatible MSOP layout; versus TPS62130ARGTR, it prioritizes 18 µA quiescent current and proven 1.25 MHz stability over raw current capacity - making it ideal for cost- and battery-sensitive portable designs.
Availability
TPS62042DGQRG4 is available at Aetrix Electronics and suitable for smartphone application processor rails, PDA memory interfaces, notebook I/O subsystems, and USB-powered modem designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for TPS62042DGQRG4 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 product line was engineered specifically for battery-powered portable electronics, delivering high efficiency across wide load ranges while minimizing solution size and thermal impact in space-constrained devices.
FAQ
What is the output voltage tolerance of the TPS62042DGQRG4 over temperature and load?
The TPS62042DGQRG4 provides a fixed 1.5 V output with ±3% tolerance across the full operating ambient temperature range (−40°C to 85°C) and load current range (0 mA to 1.2 A). This specification is guaranteed by internal trimming of the 0.5 V reference and feedback amplifier, eliminating need for external calibration or resistor matching. The TPS62042DGQRG4 achieves this accuracy without external components, supporting robust system-level voltage margining in portable devices.
Does the TPS62042DGQRG4 require external compensation components?
No, the TPS62042DGQRG4 uses an internally compensated voltage-mode control loop and requires no external compensation components. Its fast-response architecture with input voltage feed-forward enables stable operation with only 22 µF ceramic input and output capacitors, as verified in TI's SLVS463B datasheet Figure 17. This simplifies design, reduces BOM count, and eliminates tuning effort - a key advantage of the TPS62042DGQRG4 over open-loop or externally compensated buck controllers.
How does the MODE pin affect efficiency and noise performance of the TPS62042DGQRG4?
When the MODE pin is pulled low, the TPS62042DGQRG4 operates in Power Save Mode: it switches at ~625 kHz in PFM at light loads (<100 mA) for peak efficiency (95% at 600 mA), but generates variable-frequency noise. Pulling MODE high forces fixed 1.25 MHz PWM operation, improving EMI filterability at the cost of ~5–8% lower light-load efficiency. This dual-mode capability makes the TPS62042DGQRG4 adaptable to both battery-life-critical and noise-sensitive subsystems within the same platform.
Can the TPS62042DGQRG4 operate with input voltage equal to its 1.5 V output?
Yes, the TPS62042DGQRG4 supports 100% duty cycle operation, allowing it to maintain regulation even when input voltage drops to the output level - critical for maximizing battery utilization. At VO = 1.5 V and IO = 1.2 A, minimum functional VIN is approximately 1.5 V + (1.2 A × 0.21 Ω) = 1.75 V, based on max P-channel rDS(on). This feature extends runtime in single-cell Li-ion applications where voltage decays from 4.2 V to 2.7 V, and the TPS62042DGQRG4 continues regulating down to ~1.75 V input.
What thermal considerations apply to the TPS62042DGQRG4 in the MSOP PowerPad™ package?
The TPS62042DGQRG4's MSOP PowerPad™ package requires the exposed thermal pad to be soldered to a solid PCB ground plane with ≥4 thermal vias (0.3 mm diameter) to achieve the rated 60°C/W junction-to-ambient thermal resistance. Without proper pad connection, RθJA degrades significantly, risking thermal shutdown above 800 mA continuous load at 70°C ambient. Layout guidance is detailed in TI's SLMA002 application note - a mandatory reference for reliable deployment of the TPS62042DGQRG4.
TPS62042DGQRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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-HVSSOP
TPS62042DGQRG4 FAQ
1.How can I place an order for TPS62042DGQRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62042DGQRG4 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 TPS62042DGQRG4 reliable?
The price and inventory of TPS62042DGQRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62042DGQRG4 is usually 5 days.
3.What payment methods are accepted for TPS62042DGQRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62042DGQRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62042DGQRG4?
TPS62042DGQRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62042DGQRG4 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 TPS62042DGQRG4?
For technical support, including TPS62042DGQRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62042DGQRG4 requirements.
6.How does Aetrix verify that TPS62042DGQRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62042DGQRG4 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 TPS62042DGQRG4 meets industry standards.
7.What is the process for return or replacement of TPS62042DGQRG4?
All TPS62042DGQRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62042DGQRG4, 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 TPS62042DGQRG4 part is unused and in its original packaging.
Return procedure for TPS62042DGQRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62042DGQRG4 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…
