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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - LinearTPS7A2042PDQNR
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TPS7A2042PDQNR - Texas Instruments

Manufacturer Part Number
TPS7A2042PDQNR
Manufacturer
Texas Instruments
Allelco Part Number
98D-TPS7A2042PDQNR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
5,900 pcs available, New & Original
Parts Description
300-MA, ULTRA-LOW-NOISE, LOW-IQ,
Package
4-X2SON (1x1)
Data sheet
TPS7A2042PDQNR.pdf

PCN Design/Specification

TPS7A20 17/Dec/2021.pdf
RoHs Status
 
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Our certification
In stock: 5900
  • Unit Price: $0.145
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
5+ $0.145 $0.73
50+ $0.118 $5.90
150+ $0.106 $15.90
500+ $0.091 $45.50
3000+ $0.085 $255.00
6000+ $0.081 $486.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TPS7A2042PDQNR Tech Specifications
Texas Instruments - TPS7A2042PDQNR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS7A2042PDQNR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage Dropout (Max) 0.14V @ 300mA
Voltage - Output (Min/Fixed) 4.2V
Voltage - Output (Max) -
Voltage - Input (Max) 6V
Supplier Device Package 4-X2SON (1x1)
Series -
Protection Features Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Package / Case 4-XDFN Exposed Pad
Package Tape & Reel (TR)
Product Attribute Attribute Value
PSRR 65dB ~ 40dB (100Hz ~ 1MHz)
Output Type Fixed
Output Configuration Positive
Operating Temperature -40°C ~ 125°C (TJ)
Number of Regulators 1
Mounting Type Surface Mount
Current - Quiescent (Iq) 15 µA
Current - Output 300mA
Control Features Enable

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status Not applicable
Moisture Sensitivity Level (MSL) 1 (Unlimited)
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

What are the key performance trade-offs when selecting the TPS7A2042PDQNR for a low-power battery-powered application requiring 4.2V output?
The TPS7A2042PDQNR offers an ultra-low quiescent current of 15 µA, which is critical for extending battery life in applications like IoT sensors or portable devices. However, this benefit comes with a voltage dropout of up to 0.14V at 300mA, meaning the input must be at least 4.34V to maintain regulation. While this is acceptable for most single-cell Li-ion batteries charged to ~4.2V, it limits use in systems where input headroom is constrained. Engineers must balance power efficiency against voltage margin requirements, especially under maximum load conditions.
How does the PSRR of the TPS7A2042PDQNR compare across frequency ranges, and what implications does this have for noise-sensitive analog circuits?
The TPS7A2042PDQNR provides a peak power supply rejection ratio (PSRR) of 65dB at low frequencies (e.g., 100Hz), gradually decreasing to 40dB at higher frequencies up to 1MHz. This characteristic makes it suitable for stabilizing noisy DC rails but less effective at suppressing high-frequency switching noise from nearby converters. For precision analog subsystems such as ADCs or RF front-ends, additional filtering may still be required unless the regulator is placed upstream of sensitive stages with proper layout isolation.
Can the TPS7A2042PDQNR reliably operate in environments with transient load steps typical in microcontroller-based designs?
Yes, the device includes over-current protection and thermal shutdown, which help manage sudden load transients without damage. Its fast transient response, combined with a low output capacitance requirement due to internal compensation, allows stable operation during brief current spikes common in microcontrollers waking from sleep modes. However, PCB layout—especially minimizing loop inductance between input capacitor and VIN pin—is essential to prevent voltage droop below the dropout threshold during peak demand.
What design considerations arise when using the TPS7A2042PDQNR with ceramic capacitors instead of tantalum or electrolytic types?
The TPS7A2042PDQNR is designed to work effectively with ceramic output capacitors (X5R/X7R dielectrics), which offer excellent stability and low ESR. Unlike regulators requiring high-ESR caps for stability, this LDO maintains phase margin with ceramics, simplifying board space and cost. Nevertheless, care must be taken to avoid resonant interactions between input/output capacitance and parasitic inductance; placing capacitors close to the pins and using multiple vias for ground return improves robustness.
In what scenarios would the UVLO feature of the TPS7A2042PDQNR provide meaningful system-level protection?
Under-voltage lockout prevents the output from activating if the input voltage falls below a safe threshold, avoiding unstable behavior during brown-out conditions. This is particularly valuable in automotive or industrial systems where power rails can sag unexpectedly. When paired with a microcontroller’s reset circuitry, UVLO ensures clean startup sequences and avoids partial logic states that could corrupt memory or firmware.
How does the thermal performance of the TPS7A2042PDQNR impact maximum continuous output current in natural convection environments?
With a maximum junction temperature of 125°C and a thermal resistance (θJA) dependent on PCB copper area, the TPS7A2042PDQNR can deliver full 300mA continuously only under well-cooled conditions—typically with sufficient copper pour and airflow. In compact enclosures with poor heat dissipation, derating to 200–250mA may be necessary to stay within safe operating limits. Thermal simulation or empirical testing under actual load profiles should guide final current allocation.
Is it advisable to parallel multiple TPS7A2042PDQNR devices to increase total current capacity?
No, paralleling linear regulators like the TPS7A2042PDQNR generally leads to uneven current sharing due to slight variations in threshold voltages and feedback loops. Unless actively balanced with external resistors or specialized ICs, one unit may dominate while others remain underutilized or overstressed. For higher currents, consider alternative topologies such as synchronous buck regulators or dedicated multi-channel PMICs designed for load balancing.
What precautions should engineers take when designing with the exposed pad of the 4-X2SON package to ensure reliable thermal and electrical performance?
The exposed pad on the TPS7A2042PDQNR must be soldered directly to a solid ground plane to minimize thermal resistance and provide a return path for digital signals. Proper solder fillets and via stitching around the perimeter enhance both heat sinking and electromagnetic compatibility. Insufficient attachment risks elevated junction temperatures and potential open-circuit faults. Following TI’s recommended land pattern and assembly guidelines ensures consistent reliability across production batches.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS7A2042PDQNR

Product Attribute TPS7A2045PDQNR TPS7A2042PDBVR TPS7A2033PDQNR TPS7A2036PDQNR
Part Number TPS7A2045PDQNR TPS7A2042PDBVR TPS7A2033PDQNR TPS7A2036PDQNR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Current - Output - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage Dropout (Max) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
PSRR - - - -
Protection Features - - - -
Voltage - Output (Max) - - - -
Output Configuration - - - -
Voltage - Input (Max) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Output (Min/Fixed) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Output Type - Current - Unbuffered Voltage - Buffered -
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Quiescent (Iq) - - - -
Number of Regulators - - - -
Control Features - - - -

TPS7A2042PDQNR Datasheet PDF

Download TPS7A2042PDQNR pdf datasheets and Texas Instruments documentation for TPS7A2042PDQNR - Texas Instruments.

PCN Design/Specification
TPS7A20 17/Dec/2021.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

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Brazil 7
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New Zealand 5
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Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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TPS7A2042PDQNR Image

TPS7A2042PDQNR

Texas Instruments
98D-TPS7A2042PDQNR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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