Texas Instruments

TPS7A4701RGWR - 1A, 35V Ultra-Low Noise LDO | Texas Instruments

Name: TPS7A4701RGWR
Brand: Texas Instruments
Price: 3.1 USD
Availability: InStock

MPN: TPS7A4701RGWR ✓ Active

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1.4 V to 34 V Vdss 1 A Id 31.4 C/W Rds(on) VQFN-20 (RGW) 5x5 mm Package

From $3.1 USD / Unit

MOQ: 1 |

Price updated: 2026-08-17

Volume Pricing

Qty	Unit Price	Extended
1	$3.2467	$3.25

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TPS7A4701RGWR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

TPS7A4700RGWR

✅ Drop-In

📦 VQFN-20 (RGW)

same VQFN-20 RGW footprint, no EN pin, pin-to-pin compatible

📋 Reference alternative (not in catalog)

TPS7A4701RGWR-Q1

✅ Drop-In

📦 VQFN-20 (RGW)

same die/package, AEC-Q100 automotive grade

📋 Reference alternative (not in catalog)

TPS7A4701RGWT

✅ Drop-In

📦 VQFN-20 (RGW)

same die, tape and reel packaging variant

📋 Reference alternative (not in catalog)

TPS7A4701RGWR Maximum Ratings & Electrical Characteristics

Output Type	Adjustable
Output Voltage Range	1.4 V to 34 V
Maximum Output Current	1 A
Input Voltage Range	3 V to 35 V
Dropout Voltage	200 mV at 1 A
Output Noise	4.17 uVrms (20 Hz to 100 kHz)
PSRR	72 dB at 1 kHz
Quiescent Current	6.4 mA
Thermal Resistance	31.4 C/W
Operating Temperature	-40C to +125C
Package	VQFN-20 (RGW) 5x5 mm
Mounting Type	Surface Mount
MSL Level	2 (1 year)
RoHS Status	Compliant
Enable Pin	Yes (active-high)

TPS7A4701RGWR Pin Configuration

Pin 1	OUT — Regulated output voltage
Pin 2	OUT — Regulated output voltage
Pin 3	OUT — Regulated output voltage
Pin 4	OUT — Regulated output voltage
Pin 5	GND — Ground
Pin 6	EN — Enable (active high)
Pin 7	IN — Input supply
Pin 8	IN — Input supply
Pin 9	IN — Input supply
Pin 10	IN — Input supply
Pin 11	NR/SS — Noise reduction/soft-start
Pin 12	FB — Feedback
Pin 13	GND — Ground
Pin 14	GND — Ground
Pin 15	GND — Ground
Pin 16	GND — Ground
Pin 17	GND — Ground
Pin 18	GND — Ground
Pin 19	GND — Ground
Pin 20	GND — Ground

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

TPS7A4701RGWR is suitable for 6 applications: High-End Audio DAC Power Supply, RF Transceiver Power Supply, Precision ADC Reference Buffer, Test and Measurement Instrumentation, Industrial 24V Bus Systems, Portable Medical Devices.

Recommended

PCM1794A (DAC requiring low-noise power) OPA1612 (I/V converter op-amp)

Recommended

LMX2594 (PLL synthesizer needing clean supply) TRF37B32 (RF amplifier)

Recommended

ADS8881 (18-bit SAR ADC) REF5025 (Voltage reference)

Recommended

ADS1262 (Precision ADC) OPA2188 (Zero-drift op-amp)

Recommended

MSP430FR5969 (Low-power MCU) ISO7741 (Digital isolator)

Recommended

ADS1292R (ECG front-end) MSP432P401R (MCU)

Recommended Products Summary

PCM1794A DAC requiring low-noise power Used in: High-End Audio DAC Power Supply OPA1612 I/V converter op-amp Used in: High-End Audio DAC Power Supply LMX2594 PLL synthesizer needing clean supply Used in: RF Transceiver Power Supply TRF37B32 RF amplifier Used in: RF Transceiver Power Supply ADS8881 18-bit SAR ADC Used in: Precision ADC Reference Buffer REF5025 Voltage reference Used in: Precision ADC Reference Buffer ADS1262 Precision ADC Used in: Test and Measurement Instrumentation OPA2188 Zero-drift op-amp Used in: Test and Measurement Instrumentation MSP430FR5969 Low-power MCU Used in: Industrial 24V Bus Systems ISO7741 Digital isolator Used in: Industrial 24V Bus Systems ADS1292R ECG front-end Used in: Portable Medical Devices MSP432P401R MCU Used in: Portable Medical Devices

What is the output voltage range of TPS7A4701?

The TPS7A4701 adjustable version outputs from 1.4V to 34V using external resistor dividers. According to TI datasheet SBOS708B, the output is set by two external resistors with the formula VOUT = 1.4V * (1 + R1/R2).

Does TPS7A4701 require a heatsink at 1A output?

At VIN=12V, VOUT=5V, and 1A load, the TPS7A4701 dissipates approximately 7W of power. With a thermal resistance of 31.4 C/W (theta_JA), the junction temperature would rise 220C above ambient. A heatsink or substantial copper pour (at least 1 square inch) is required for reliable operation above 2-3W dissipation.

What is the difference between TPS7A4701 and TPS7A4700?

The TPS7A4701 includes an active-high enable pin for power sequencing, while the TPS7A4700 does not have an enable pin. Both share identical noise (4.17 uVrms) and PSRR (72 dB at 1 kHz) specifications and the same VQFN-20 (RGW) package, making them drop-in replacements.

What is the output noise of TPS7A4701?

The TPS7A4701 has an output noise of 4.17 uVrms over the 20 Hz to 100 kHz bandwidth. This makes it suitable for noise-sensitive applications such as audio DACs, RF synthesizers, and precision ADC references.

Can TPS7A4701 be used for audio applications?

Yes, the TPS7A4701 is ideal for audio DAC power supplies due to its 4.17 uVrms ultra-low noise and 72 dB PSRR at 1 kHz. These specifications ensure clean power rails that do not introduce audible noise or interference into the audio signal path.

What is the input voltage range of TPS7A4701?

The TPS7A4701 operates with an input voltage range from 3V to 35V. This wide range allows it to be used in various applications, including industrial 24V bus systems and battery-powered devices.

What is the dropout voltage of TPS7A4701?

The TPS7A4701 has a low dropout voltage of 200 mV at full 1A load. This low dropout allows efficient regulation even when the input voltage is close to the output voltage, reducing power dissipation.

Is TPS7A4701 available in automotive grade?

The standard TPS7A4701RGWR is not AEC-Q100 qualified. However, the TPS7A4701RGWR-Q1 variant is AEC-Q100 qualified for automotive applications, sharing the same VQFN-20 (RGW) package and pinout.

What is the quiescent current of TPS7A4701?

The TPS7A4701 has a quiescent current of 6.4 mA. This relatively low quiescent current helps maintain efficiency in battery-powered applications while providing high performance.

What is the PSRR of TPS7A4701?

The TPS7A4701 achieves a PSRR of 72 dB at 1 kHz. This high power supply rejection ratio minimizes ripple from upstream switching converters, making it ideal for noise-sensitive analog and RF circuits.

What is the package of TPS7A4701?

The TPS7A4701 is available in a 20-pin VQFN (RGW) package measuring 5x5 mm with an exposed thermal pad. This compact package is suitable for space-constrained designs and provides good thermal performance.

What is the operating temperature range of TPS7A4701?

The TPS7A4701 operates over a temperature range of -40C to +125C. This wide range makes it suitable for industrial and automotive environments where extreme temperatures are common.

Does TPS7A4701 have thermal shutdown protection?

Yes, the TPS7A4701 includes thermal shutdown protection. This feature prevents damage from overheating by shutting down the regulator when the junction temperature exceeds safe limits.

What is the MSL level of TPS7A4701?

The TPS7A4701 has an MSL (Moisture Sensitivity Level) of 2, with a floor life of 1 year. This indicates the component can be stored for up to one year before soldering, provided it is kept in a dry environment.

Is TPS7A4701 RoHS compliant?

Yes, the TPS7A4701 is RoHS compliant. This ensures it meets the European Union's restrictions on hazardous substances, making it suitable for use in consumer and industrial products.

Engineering reference data for TPS7A4701RGWR — comparison, design guidance, and compliance information.

Selection Guide

Choose TPS7A4701RGWR when you need a positive-output ultra-low-noise LDO with enable pin for power sequencing in industrial or consumer applications. Choose TPS7A4700RGWR if you do not need the enable pin (slight cost savings, same package). Choose TPS7A4701RGWR-Q1 for automotive applications requiring AEC-Q100 qualification. Choose TPS7A4701RGWT if you prefer a different tape and reel ordering option, but note it is electrically identical. All parts share the same VQFN-20 (RGW) package footprint, enabling PCB layout reuse across variants.

Comparison with Alternatives

Parameter	This Product	TPS7A4700RGWR	TPS7A4701RGWR-Q1	TPS7A4701RGWT
Package	VQFN-20 (RGW)	VQFN-20 (RGW) - same	VQFN-20 (RGW) - same	VQFN-20 (RGW) - same
Output Current	1 A	1 A	1 A	1 A
Output Voltage Range	1.4V to 34V	1.4V to 34V	1.4V to 34V	1.4V to 34V
Enable Pin	Yes (active-high)	No	Yes (active-high)	Yes (active-high)
Automotive Grade	No	No	Yes (AEC-Q100)	No
Output Noise	4.17 uVrms	4.17 uVrms	4.17 uVrms	4.17 uVrms
PSRR at 1 kHz	72 dB	72 dB	72 dB	72 dB
Quiescent Current	6.4 mA	6.4 mA	6.4 mA	6.4 mA

Key Differentiators

Only VQFN-20 family member with enable pin (vs TPS7A4700RGWR)
Automotive grade option available (vs TPS7A4701RGWR-Q1)
Tape and reel packaging variant (vs TPS7A4701RGWT)

Design Notes

At VIN=12V, VOUT=5V, and 1A load, power dissipation is 7W. The VQFN-20 package has theta_JA of 31.4 C/W, resulting in a 220C junction temperature rise. A heatsink or at least 1 square inch of copper pour is required for reliable operation above 2W dissipation.

Place input and output capacitors as close to the IC pins as possible. Use a 10uF ceramic capacitor on the input and a 10uF ceramic capacitor on the output. Add a 0.1uF ceramic capacitor in parallel for high-frequency noise bypass.

Do not exceed the maximum input voltage of 35V. Ensure the external resistor divider uses 1% or better tolerance resistors to maintain output voltage accuracy. The NR/SS capacitor controls startup time and noise bandwidth - do not omit it.