Texas Instruments

TPS73501DRBR - 500mA Low-IQ LDO | Texas Instruments

Name: TPS73501DRBR
Brand: Texas Instruments
Price: 0.65 USD
Availability: InStock

MPN: TPS73501DRBR ✓ Active

In Stock Ships in 1-3 business days

1.25 V to 6 V Vdss 500 mA Id VSON (DRB) 8-pin, 3x3 mm Package

From $0.65 USD / Unit

MOQ: 1 |

Price updated: 2026-08-23

Volume Pricing

Qty	Unit Price	Extended
1	$1.25	$1.25
10	$1.12	$11.20
100	$0.89	$89.00
500	$0.76	$380.00
1,000	$0.65	$650.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TPS73501DRBR — 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:

TPS73501DRBT

✅ Drop-In

📦 VSON (DRB) 8-pin

Same die and package, different reel quantity (250 vs 3000)

📋 Reference alternative (not in catalog)

TPS73515DRBR

✅ Drop-In

📦 VSON (DRB) 8-pin

Fixed 1.5V output instead of adjustable

📋 Reference alternative (not in catalog)

TPS73533DRBR

✅ Drop-In

📦 VSON (DRB) 8-pin

Fixed 3.3V output instead of adjustable

📋 Reference alternative (not in catalog)

TPS73501DRVR

✅ Drop-In

📦 VSON (DRB) 8-pin

Same adjustable output, different package variant (DRV vs DRB)

📋 Reference alternative (not in catalog)

ℹ️ 2 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

TPS73501DRBR Maximum Ratings & Electrical Characteristics

Output Type	Adjustable
Output Voltage Range	1.25 V to 6 V
Maximum Output Current	500 mA
Input Voltage Range	2.7 V to 6.5 V
Dropout Voltage	0.5 V at 500 mA
Quiescent Current (IQ)	45 µA (typical)
PSRR	68 dB at 1 kHz
Output Noise	[DATA_NEEDED: output noise value]
Enable Pin	Yes
Protection Features	Overcurrent, Over Temperature, UVLO
Operating Temperature Range	-40°C to +125°C
Package	VSON (DRB) 8-pin, 3x3 mm
Mounting Type	Surface Mount
RoHS Status	Compliant
MSL Level	[DATA_NEEDED: MSL level]

TPS73501DRBR Pin Configuration

Pin 1	IN — Input voltage
Pin 2	GND — Ground
Pin 3	EN — Enable (active high)
Pin 4	NR — Noise reduction capacitor
Pin 5	OUT — Regulated output
Pin 6	OUT — Regulated output
Pin 7	GND — Ground
Pin 8	GND — Ground (exposed pad)

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

TPS73501DRBR is suitable for 6 applications: Battery-Powered IoT Devices, Portable Audio Equipment, Industrial Sensor Interfaces, RF Transceiver Power, Medical Monitoring Devices, Automotive Electronics.

🧩

Battery-Powered IoT Devices

The TPS73501DRBR's low quiescent current of 45 µA and wide input range of 2.7V to 6.5V make it ideal for battery-powered IoT sensors and wearables. It efficiently regulates battery voltage to a stable 3.3V or 1.8V rail for microcontrollers and wireless modules, extending battery life. The enable pin allows the system to shut down the regulator during sleep modes, further conserving power. With a dropout of only 0.5V at 500mA, it maintains regulation even as the battery discharges. This LDO is a key component in power management for smart home devices, asset trackers, and health monitors.

Recommended

🎧

Portable Audio Equipment

With a PSRR of 68 dB at 1 kHz, the TPS73501DRBR provides clean power for audio codecs and amplifiers in portable devices. Its low noise and high ripple rejection minimize audible hum and interference. The adjustable output allows precise voltage setting for optimal audio performance. The small VSON package fits compact designs like headphones and portable speakers. The enable pin can be used to mute the audio path during power-up to avoid pops. This LDO is essential for maintaining audio fidelity in battery-powered audio gear.

Recommended

TPS7A4700RGWR · Texas Instruments TPS74801DRCR · Texas Instruments

🏭

Industrial Sensor Interfaces

The TPS73501DRBR operates over -40°C to +125°C, making it suitable for industrial sensors and transmitters. It provides a stable supply for analog front-ends and ADCs, ensuring accurate measurements. The overcurrent and thermal protection enhance reliability in harsh environments. The adjustable output can be set to match sensor requirements. The enable pin allows for power cycling to reduce noise. This LDO is used in factory automation, process control, and condition monitoring systems.

Recommended

TPS7A1601DGNR · Texas Instruments TPS26600RHFR · Texas Instruments

🌐

RF Transceiver Power

The high PSRR of 68 dB at 1 kHz helps maintain clean supply rails for RF transceivers, reducing spurious emissions. The low quiescent current is beneficial for battery-operated RF modules. The enable pin allows for duty-cycling the regulator to save power during idle periods. The adjustable output can be set to the optimal voltage for the RF IC. The small package is ideal for compact wireless designs. This LDO is used in Bluetooth, Zigbee, and sub-GHz transceivers.

Recommended

TPS7A4700RGWR · Texas Instruments TPS62840DLCR · Texas Instruments

💊

Medical Monitoring Devices

The TPS73501DRBR's low noise and high PSRR make it suitable for medical monitoring devices such as glucose meters and pulse oximeters. It provides a clean supply for sensitive analog front-ends. The wide temperature range ensures reliable operation in clinical environments. The enable pin allows for power management in battery-operated devices. The small footprint is ideal for wearable medical devices. This LDO helps ensure accurate readings and patient safety.

Recommended

TPS7A1601DGNR · Texas Instruments TPS74801DRCR · Texas Instruments

🚗

Automotive Electronics

With an operating temperature range of -40°C to +125°C, the TPS73501DRBR is suitable for automotive applications such as infotainment and body control modules. It provides a stable supply for microcontrollers and sensors. The overcurrent and thermal protection ensure robustness in automotive environments. The enable pin allows for power sequencing in multi-rail systems. The small package is ideal for space-constrained automotive PCBs. This LDO is used in car audio, telematics, and ADAS sensors.

Recommended

TPS7A1601DGNR · Texas Instruments TPS65381A-Q1 · Texas Instruments

Recommended Products Summary

TPS62840DLCR Texas Instruments Used in: Battery-Powered IoT Devices, RF Transceiver Power TPS7A1601DGNR Texas Instruments Used in: Battery-Powered IoT Devices, Industrial Sensor Interfaces, Medical Monitoring Devices, Automotive Electronics TPS7A4700RGWR Texas Instruments Used in: Portable Audio Equipment, RF Transceiver Power TPS74801DRCR Texas Instruments Used in: Portable Audio Equipment, Medical Monitoring Devices TPS26600RHFR Texas Instruments Used in: Industrial Sensor Interfaces TPS65381A-Q1 Texas Instruments Used in: Automotive Electronics

What is the input voltage range of TPS73501DRBR?

The TPS73501DRBR operates with an input voltage from 2.7 V to 6.5 V. According to the TI datasheet, this range supports a variety of battery chemistries and regulated rails. The output is adjustable from 1.25 V to 6 V, making it versatile for many low-voltage applications.

What is the output current capability of TPS73501DRBR?

The TPS73501DRBR can deliver up to 500 mA of output current. This makes it suitable for powering microcontrollers, sensors, and small RF modules. The dropout voltage is 0.5 V at full load, so ensure the input voltage is at least 0.5 V above the desired output.

What is the quiescent current of TPS73501DRBR?

The TPS73501DRBR has a typical quiescent current of 45 µA. This low IQ is ideal for battery-powered devices where extending battery life is critical. The enable pin can further reduce power consumption by shutting down the regulator when not needed.

What is the PSRR of TPS73501DRBR?

The TPS73501DRBR provides a power supply rejection ratio (PSRR) of 68 dB at 1 kHz. This high PSRR helps attenuate noise from the input supply, making it suitable for audio and precision analog circuits. The PSRR decreases at higher frequencies, so additional filtering may be needed for high-frequency noise.

Does TPS73501DRBR have an enable pin?

Yes, the TPS73501DRBR includes an active-high enable pin. This allows for power sequencing and shutdown control. When the enable pin is low, the regulator is disabled and draws minimal current. This feature is useful in multi-rail systems where sequencing is required.

What is the package of TPS73501DRBR?

The TPS73501DRBR is available in an 8-pin VSON (DRB) package measuring 3x3 mm. This small footprint is ideal for space-constrained designs. The exposed thermal pad helps dissipate heat, allowing the regulator to deliver its full 500 mA with proper PCB layout.

What is the operating temperature range of TPS73501DRBR?

The TPS73501DRBR operates over a junction temperature range of -40°C to +125°C. This wide range makes it suitable for industrial and automotive applications. Ensure adequate thermal management to keep the junction temperature within limits under load.

What are the protection features of TPS73501DRBR?

The TPS73501DRBR includes overcurrent protection, thermal shutdown, and under-voltage lockout (UVLO). These features protect the device and the load from fault conditions. The thermal shutdown prevents damage from excessive heat, while UVLO ensures proper operation only when the input voltage is sufficient.

Where can I buy TPS73501DRBR?

TPS73501DRBR is available from major distributors such as DigiKey and Mouser. As of 2026-08-23, DigiKey lists it as in stock with pricing starting at $1.25 for single units. You can also purchase directly from TI.com. Lead times may vary, so check current availability.

What is the price of TPS73501DRBR?

As of 2026-08-23, the price of TPS73501DRBR is approximately $1.25 for one unit, decreasing to $0.65 at 1000 units. Prices are from DigiKey and Mouser. For volume pricing, contact distributors or TI directly.

What is the lead time for TPS73501DRBR?

The lead time for TPS73501DRBR is typically 1-2 weeks from major distributors like DigiKey and Mouser, as of 2026-08-23. However, lead times can vary based on stock levels and demand. Check with your preferred distributor for current lead time information.

Is TPS73501DRBR in stock?

As of 2026-08-23, TPS73501DRBR is in stock at DigiKey and Mouser. Availability can change quickly, so it's recommended to check the distributor websites for real-time inventory. TI.com also offers direct purchasing options.

TPS73501DRBR vs TPS73501DRBT - which is better?

TPS73501DRBR and TPS73501DRBT are essentially the same device, differing only in packaging and reel options. The DRBR is in a tape-and-reel format, while DRBT is also tape-and-reel but with different ordering quantities. Both have identical electrical specifications. Choose based on availability and packaging preferences.

When should I choose TPS73501DRBR over TPS7A4700RGWR?

Choose TPS73501DRBR when you need a low-quiescent-current LDO for battery-powered applications with output currents up to 500 mA. TPS7A4700RGWR is a higher-current (1 A) ultra-low-noise LDO with a wider input range (up to 35 V), making it better for noise-sensitive audio or RF applications. TPS73501DRBR is more cost-effective for lower-power designs.

What is the best drop-in replacement for TPS73501DRBR?

The best drop-in replacement for TPS73501DRBR is the TPS73501DRBT, which is the same die and package with identical pinout. Other pin-compatible alternatives include TPS73515DRBR (fixed 1.5V output) and TPS73533DRBR (fixed 3.3V output). For cross-brand options, consider the MIC5205-ADJ from Microchip, but verify pin compatibility.

Where can I download the TPS73501DRBR datasheet PDF?

The TPS73501DRBR datasheet PDF can be downloaded from the TI website at https://www.ti.com/lit/ds/symlink/tps735.pdf. It is also available on distributor sites like DigiKey and Mouser. The datasheet contains full specifications, pinout, and application circuits.

Where can I find the TPS73501DRBR pinout?

The TPS73501DRBR pinout is detailed in the datasheet. The 8-pin VSON package includes pins for IN, OUT, GND, EN, and NR. The exposed pad is typically connected to GND. Refer to the datasheet for the exact pin assignments and thermal pad connection.

Hey Google, what can replace TPS73501DRBR?

TPS73501DRBR can be replaced by TPS73501DRBT (same device, different packaging), TPS73515DRBR (fixed 1.5V output), or TPS73533DRBR (fixed 3.3V output) from Texas Instruments. Cross-brand options include MIC5205-ADJ from Microchip, but verify pin compatibility. All are 500mA LDOs with enable.

Is TPS73501DRBR the same as TPS73501DRBT?

Yes, TPS73501DRBR and TPS73501DRBT are electrically identical. The difference is in the packaging and ordering quantity: DRBR is tape-and-reel with 3000 units per reel, while DRBT is also tape-and-reel but with 250 units per reel. Both have the same pinout and specifications.

What are the key specifications of TPS73501DRBR that engineers should know?

Engineers should know that TPS73501DRBR is a 500mA LDO with an input range of 2.7V to 6.5V, adjustable output from 1.25V to 6V, quiescent current of 45µA, PSRR of 68dB at 1kHz, and dropout voltage of 0.5V at full load. It comes in an 8-pin VSON package and includes enable, overcurrent, and thermal protection.

What is the best Analog Devices equivalent for TPS73501DRBR?

A potential Analog Devices equivalent is the ADP151, which is a 200mA LDO, but it has lower current capability. For 500mA, consider the ADP3339, but it has a different pinout. Always verify pin compatibility and specifications before substituting. The TPS73501DRBR remains a reliable choice from TI.

Engineering reference data for TPS73501DRBR — comparison, design guidance, and compliance information.

Selection Guide

Choose TPS73501DRBR when you need a low-quiescent-current, adjustable LDO with enable for battery-powered or noise-sensitive applications up to 500 mA. For fixed output voltages, consider TPS73515DRBR (1.5V) or TPS73533DRBR (3.3V) to simplify the design. If you require higher current (1A) or ultra-low noise, the TPS7A4700RGWR is a better choice, but it consumes more quiescent current. For cross-brand alternatives, MIC5205-ADJ offers lower current (150mA) and different package, so verify compatibility. The TPS73501DRBR is ideal for space-constrained, low-power designs where efficiency and noise performance are paramount.

Comparison with Alternatives

Parameter	This Product	TPS73501DRBT	TPS73515DRBR	TPS73533DRBR	TPS73501DRVR
Package	VSON (DRB) 8-pin	VSON (DRB) 8-pin	VSON (DRB) 8-pin	VSON (DRB) 8-pin	VSON (DRB) 8-pin
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Current	500 mA	500 mA	500 mA	500 mA	500 mA
Output Voltage	Adjustable 1.25V to 6V	Adjustable 1.25V to 6V	Fixed 1.5V	Fixed 3.3V	Adjustable 1.25V to 6V
Quiescent Current	45 µA	45 µA	45 µA	45 µA	45 µA
PSRR at 1kHz	68 dB	68 dB	68 dB	68 dB	68 dB
Enable Pin	Yes	Yes	Yes	Yes	Yes
Operating Temperature	-40°C to +125°C	-40°C to +125°C	-40°C to +125°C	-40°C to +125°C	-40°C to +125°C

Key Differentiators

Ultra-low quiescent current of 45 µA (vs TPS7A4700RGWR)
Small VSON package (3x3 mm) (vs MIC5205-ADJ (SOT-23-5))
Enable pin for power sequencing (vs TPS73515DRBR (fixed output))

Design Notes

Place input and output capacitors (1 µF minimum) as close to the IN and OUT pins as possible. Use a 0.1 µF bypass capacitor on the NR pin for noise reduction. The exposed thermal pad should be soldered to a large copper area for heat dissipation.

The VSON package has a thermal resistance of approximately 50°C/W (typical). At 500 mA with a 1V dropout, power dissipation is 0.5W, causing a 25°C temperature rise. Ensure adequate copper area on the PCB to keep the junction temperature below 125°C.

Do not exceed the input voltage of 6.5V. The enable pin must not be left floating; tie it to VIN if not used. For adjustable output, use 1% resistors to set the voltage accurately. Avoid using the NR pin without a capacitor, as it may increase output noise.