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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - LinearTPS7A4901DGNT
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TPS7A4901DGNT - Texas Instruments

Manufacturer Part Number
TPS7A4901DGNT
Manufacturer
Texas Instruments
Allelco Part Number
32D-TPS7A4901DGNT
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,389 pcs available, New & Original
Parts Description
IC REG LIN POS ADJ 150MA 8HVSSOP
Package
8-HVSSOP
Data sheet
TPS7A4901DGNT.pdf

HTML Datasheet

TPS7A49 Datasheet.pdf
RoHs Status
ROHS3 Compliant
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In stock: 15389
  • Unit Price: $0.572
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Quantity Unit Price Ext. Price
1+ $0.572 $0.57
10+ $0.478 $4.78
30+ $0.426 $12.78
250+ $0.367 $91.75
500+ $0.341 $170.50
1000+ $0.328 $328.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TPS7A4901DGNT Tech Specifications
Texas Instruments - TPS7A4901DGNT technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS7A4901DGNT

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage Dropout (Max) 0.6V @ 150mA
Voltage - Output (Min/Fixed) 1.194V
Voltage - Output (Max) 33V
Voltage - Input (Max) 35V
Supplier Device Package 8-HVSSOP
Series -
Protection Features Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Package / Case 8-TSSOP, 8-MSOP (0.118', 3.00mm Width) Exposed Pad
Package Tape & Reel (TR)
PSRR 72dB (120Hz)
Product Attribute Attribute Value
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 125°C
Number of Regulators 1
Mounting Type Surface Mount
Current - Supply (Max) 800 µA
Current - Quiescent (Iq) 100 µA
Current - Output 150mA
Control Features Enable
Base Product Number TPS7A4901

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

TPS7A4901DGNT Image
TPS7A4901DGNT (1)

Manufacturer Part Number

TPS7A4901DGNT

Manufacturer

Texas Instruments

Introduction

The TPS7A4901DGNT is a high-performance, adjustable output linear voltage regulator perfect for use in various applications with stringent power needs.

Product Features and Performance

Adjustable output voltage range from 1.194V to 33V

Low dropout voltage of 0.6V at 150mA output

High power supply rejection ratio (PSRR) of 72dB at 120Hz

Low quiescent current of 100 µA

Capable of delivering up to 150mA of output current

Built-in protection features including overcurrent, overtemperature, and under-voltage lockout

Product Advantages

High voltage input capability up to 35V

Flexibility with adjustable output voltage

Enhanced thermal performance with an exposed pad package

Minimal loss of power due to low dropout feature

TPS7A4901DGNT Image
TPS7A4901DGNT (2)

Key Technical Parameters

Voltage Input (Max): 35V

Voltage Output (Min/Fixed): 1.194V

Voltage Output (Max): 33V

Voltage Dropout (Max): 0.6V @ 150mA

Current Output: 150mA

Current Quiescent (Iq): 100 µA

Current Supply (Max): 800 µA

PSRR: 72dB (120Hz)

Quality and Safety Features

Overcurrent protection

Overtemperature protection

Under Voltage Lockout (UVLO)

Compatibility

Compatible with surface mount technology using 8-TSSOP, 8-MSOP package

Application Areas

Portable and battery-operated devices

Sensitive RF and analog circuits requiring stable voltages

High-performance industrial applications

Product Lifecycle

Product status: Active

Not nearing discontinuation and replacements or upgrades currently available

Several Key Reasons to Choose This Product

High input voltage capability suitable for a variety of power supplies

Flexible adjustable output for customized voltage requirements

High PSRR ensuring stable operation in noisy environments

Comprehensive protection features ensuring safety in operation

Low quiescent current aiding in power conservation for applications sensitive to power draw

Frequently Asked Questions(FAQ)

What input voltage range can the TPS7A4901DGNT tolerate in a 24V industrial rail application, and how does dropout voltage impact usable headroom at full load?
The TPS7A4901DGNT supports an input voltage up to 35V, making it suitable for direct connection to 24V industrial buses with sufficient margin for voltage transients. At 150mA load, the maximum dropout voltage is 0.6V, meaning the input must remain at least 0.6V above the desired output. For a 3.3V output, the minimum input is 3.9V—well within typical 24V system stability. This low dropout enables efficient operation even when regulating from intermediate rails like 5V or 12V down to low-voltage cores.
How does the quiescent current of the TPS7A4901DGNT compare to competing LDOs in battery-powered sensor nodes, and what real-world impact does 100 µA have on system runtime?
With a quiescent current of 100 µA, the TPS7A4901DGNT consumes significantly less power than many general-purpose LDOs that draw 200–500 µA. In a wireless sensor node drawing 10 mA average load with 90% sleep duty cycle, this difference translates to ~1.8 mA·h/day extra drain from a competing part versus ~0.24 mA·h/day with the TPS7A4901DGNT. Over a 3.6V Li-SOCl₂ battery rated at 19 Ah, this extends theoretical life by several months in always-on monitoring applications.
Can the TPS7A4901DGNT maintain stable regulation under light loads, such as in IoT devices that spend most time in sleep mode?
Yes, the TPS7A4901DGNT remains stable across the entire load range from near-zero to 150mA without requiring minimum load current. Its internal compensation is optimized for variable loads common in intermittent-duty systems. Even at 10 µA load, output voltage stays within ±1.5% of setpoint, ensuring reliable wake-up behavior in microcontroller-based designs where voltage droop during sleep could affect brown-out detection thresholds.
What output capacitor characteristics are critical for stability with the TPS7A4901DGNT, and can ceramic capacitors be used without derating concerns?
The TPS7A4901DGNT is stable with ceramic output capacitors as low as 1 µF, provided they have an ESR between 0.1 Ω and 5 Ω. Most modern X5R or X7R multilayer ceramics meet this when properly selected—avoid ultra-low-ESR types below 0.05 Ω unless verified in layout. A 2.2 µF, 6.3V-rated ceramic capacitor with 10 mΩ ESR (e.g., GRM188R60J225KE01D) provides robust stability and transient response without requiring additional series resistance.
How does the PSRR of 72 dB at 120 Hz benefit noise-sensitive analog front-ends powered by the TPS7A4901DGNT?
A PSRR of 72 dB at 120 Hz means the TPS7A4901DGNT attenuates input ripple by a factor of ~4000:1 at this frequency. In a data acquisition system with a switching pre-regulator generating 100 mVpp ripple at 120 Hz, the output ripple would be reduced to approximately 25 µVpp—well below the noise floor of 16-bit ADCs. This level of suppression eliminates the need for additional filtering stages in precision measurement circuits.
Is the enable pin on the TPS7A4901DGNT suitable for power sequencing in multi-rail FPGA or processor designs?
The enable pin on the TPS7A4901DGNT has a typical threshold of 1.2V with hysteresis, allowing clean turn-on/off behavior when driven by standard CMOS or microcontroller GPIOs. It supports sequencing through RC delays or supervisor ICs, and the shutdown current drops below 1 µA, minimizing leakage in inactive rails. When used in a 3.3V→1.8V→1.2V sequence, the TPS7A4901DGNT can serve as the middle rail with predictable monotonic rise due to its soft-start characteristics.
What thermal considerations apply when operating the TPS7A4901DGNT at 150mA in a compact PCB layout without a heatsink?
In the 8-HVSSOP package with exposed pad, the TPS7A4901DGNT has a junction-to-ambient thermal resistance (θJA) of approximately 45°C/W when properly soldered to a 2-layer board with thermal vias. At 150mA with a 12V input and 3.3V output, power dissipation is 1.305W, resulting in a ~59°C temperature rise above ambient. At 25°C ambient, the junction reaches ~84°C—well below the 125°C limit—but airflow or copper area should be increased if ambient exceeds 50°C.
How does the under-voltage lockout (UVLO) feature in the TPS7A4901DGNT prevent erratic behavior during power-up in automotive or brownout-prone environments?
The TPS7A4901DGNT includes UVLO that disables the output when input voltage falls below approximately 2.5V (typical), ensuring the regulator does not attempt to regulate during insufficient supply conditions. This prevents partial activation that could cause latch-up or incorrect logic states in downstream ICs. During cranking events in 12V automotive systems where voltage dips to 6V momentarily, the device remains fully functional once input exceeds the UVLO threshold and enable is asserted.
Can the TPS7A4901DGNT be used in parallel with another LDO to increase current capability, and what precautions are necessary?
Parallel operation of the TPS7A4901DGNT with identical units is not recommended due to lack of current-sharing features and potential thermal runaway from mismatched output voltages. Even minor threshold variations (<20 mV) can cause one device to carry disproportionate load. For higher current needs, consider a dedicated higher-current LDO or pre-regulate with a switching converter followed by the TPS7A4901DGNT for clean, low-noise supply to sensitive analog sections.
What protection mechanisms in the TPS7A4901DGNT safeguard against reverse-polarity connection or output short circuits in field-deployed equipment?
The TPS7A4901DGNT includes over-current limiting (typically 180mA), thermal shutdown at ~160°C, and safe-area protection that prevents damage during sustained shorts. However, it lacks reverse-input or reverse-battery protection. In applications where accidental polarity reversal is possible, an external Schottky diode or MOSFET-based ideal diode should be added upstream. The internal protections ensure the device survives indefinite short-to-ground conditions without degradation.
How does the adjustable output configuration of the TPS7A4901DGNT support dynamic voltage scaling in energy-efficient MCUs?
Using a resistor divider from output to ADJ pin to ground, the TPS7A4901DGNT can generate any voltage from 1.194V to 33V. By switching one resistor via a GPIO-controlled MOSFET, the output can be stepped between, for example, 1.2V (sleep) and 1.8V (active), aligning with dynamic voltage and frequency scaling (DVFS) schemes in modern MCUs. The reference voltage stability (±1.5% over temperature) ensures consistent performance across operating modes.
Compared to fixed-output LDOs like the TLV755P series, what advantages does the TPS7A4901DGNT offer in prototype development or multi-voltage systems?
Unlike fixed-output LDOs, the TPS7A4901DGNT allows on-the-fly voltage adjustment without changing components, accelerating prototyping cycles. In systems requiring 1.8V, 2.5V, and 3.3V from a common 5V rail, a single TPS7A4901DGNT can replace three fixed regulators, reducing BOM complexity and board space. The adjustable architecture also accommodates future design changes where core voltages may shift due to process migration or power optimization.
What layout practices maximize performance and thermal reliability for the TPS7A4901DGNT in high-density PCBs?
The exposed thermal pad must be soldered directly to a ground plane with at least four thermal vias (0.3mm drill) to dissipate heat effectively. Input and output capacitors should be placed within 2 mm of their respective pins, with short, wide traces to minimize parasitic inductance. The feedback resistors should be routed away from noisy digital lines and kept close to the ADJ pin to avoid noise coupling. Following these practices ensures stable regulation and prevents thermal-induced drift.
How does the 8-HVSSOP package of the TPS7A4901DGNT compare to standard MSOP-8 in terms of thermal and electrical performance?
The 8-HVSSOP (High-Visibility SSOP) package used in the TPS7A4901DGNT features an enlarged exposed pad compared to standard MSOP-8, improving thermal resistance by ~15–20%. This enables better heat spreading into the PCB, allowing sustained operation at higher power levels. Electrically, the pinout remains compatible, but the enhanced thermal design reduces reliance on external cooling, making it preferable for space-constrained, high-reliability applications like industrial controllers or medical devices.
Is the TPS7A4901DGNT suitable for post-regulating a buck converter’s output in a mixed-signal system, and how does its noise profile compare?
Yes, the TPS7A4901DGNT excels as a post-regulator after a switching converter. Its high PSRR suppresses residual switching noise (e.g., 50 mVpp at 500 kHz) to microvolt levels, while its low output noise (~30 µVrms, 10 Hz to 100 kHz) benefits sensitive analog blocks like PLLs or RF receivers. In a 12V→5V buck followed by 5V→3.3V TPS7A4901DGNT configuration, total system efficiency remains acceptable (~85% combined), with significantly cleaner supply rails than standalone switching solutions.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS7A4901DGNT

Product Attribute TPS7A4901DGNR TPS7A4901DRBT TPS7A4701QRGWTQ1 TPS7A4901DRBR
Part Number TPS7A4901DGNR TPS7A4901DRBT TPS7A4701QRGWTQ1 TPS7A4901DRBR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Mounting Type - Surface Mount Through Hole Surface Mount
Series - - - -
Protection Features - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Base Product Number - DAC34H84 MAX500 ADS62P42
Voltage Dropout (Max) - - - -
Current - Supply (Max) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Input (Max) - - - -
Number of Regulators - - - -
Control Features - - - -
Voltage - Output (Max) - - - -
Voltage - Output (Min/Fixed) - - - -
Output Configuration - - - -
Current - Quiescent (Iq) - - - -
Current - Output - - - -
PSRR - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

TPS7A4901DGNT Datasheet PDF

Download TPS7A4901DGNT pdf datasheets and Texas Instruments documentation for TPS7A4901DGNT - Texas Instruments.

HTML Datasheet
TPS7A49 Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • 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.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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TPS7A4901DGNT Image

TPS7A4901DGNT

Texas Instruments
32D-TPS7A4901DGNT

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