TPS74801DRCR - 1.5A Low-VIN LDO with Soft-Start | Texas Instruments
MPN: TPS74801DRCR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.52 | $1.52 |
| 10 | $1.36 | $13.60 |
| 100 | $1.09 | $109.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.78 | $780.00 |
Drop-in alternatives for TPS74801DRCR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS74801DRCTG4
β Drop-Inπ Reference alternative (not in catalog)
TPS74801DRCR/2801
β Drop-Inπ Reference alternative (not in catalog)
TPS7A5201RPSR
β‘ Same Packageπ Reference alternative (not in catalog)
TPS7A9201DSKR
β‘ Same Packageπ Reference alternative (not in catalog)
TPS74801DRCR Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable |
| Output Voltage Range | 0.8 V to 3.6 V |
| Maximum Output Current | 1.5 A |
| Input Voltage Range (VIN) | 0.8 V to 5.5 V |
| Bias Voltage Range (VBIAS) | 2.7 V to 5.5 V |
| Dropout Voltage | 60 mV typical at 1.5 A (VBIAS = 5 V) |
| Power Good (PG) | Yes |
| Enable Pin | Yes (active high, VEN > 1.1 V) |
| Soft-Start | Programmable via external capacitor |
| Overcurrent Protection | Yes |
| Thermal Shutdown | Yes |
| Package | 10-VSON (3x3 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
TPS74801DRCR Pin Configuration
| Pin 1 | IN β Input voltage supply (0.8 V to 5.5 V) |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable (active high, VEN > 1.1 V) |
| Pin 4 | SS β Soft-start timing capacitor |
| Pin 5 | PG β Power good output |
| Pin 6 | FB β Feedback for output voltage setting |
| Pin 7 | OUT β Regulated output voltage |
| Pin 8 | OUT β Regulated output voltage |
| Pin 9 | VBIAS β Bias supply (2.7 V to 5.5 V) |
| Pin 10 | GND β 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
TPS74801DRCR is suitable for 6 applications: FPGA Core Power Supply, DSP and Microcontroller Power, Audio and RF Power Rails, Battery-Powered Devices, Industrial Sensors and IoT, Networking and Communication.
FPGA Core Power Supply
The TPS74801DRCR provides a clean, low-noise 0.8 V to 3.6 V supply for FPGA cores, with programmable soft-start to manage inrush current during power-up. Its low dropout of 60 mV at 1.5 A ensures efficient operation from a 1.8 V or 2.5 V input rail, and the power-good output enables proper sequencing with other FPGA rails. The 10-VSON package fits compact PCB layouts, and the enable pin allows external control for power management.
Recommended
DSP and Microcontroller Power
For DSPs and microcontrollers requiring low-voltage cores, the TPS74801DRCR offers an adjustable output down to 0.8 V with 1.5 A capability. Its ultra-low VIN range allows direct regulation from 1.8 V or 2.5 V rails, eliminating the need for an intermediate buck converter. The low dropout minimizes power loss, and the soft-start prevents voltage overshoot that could damage sensitive logic. The power-good output simplifies power sequencing in multi-rail systems.
Recommended
Audio and RF Power Rails
The TPS74801DRCR provides a low-noise, low-dropout supply for audio codecs and RF transceivers, where clean power is critical for signal integrity. Its low VIN operation allows regulation from 1.8 V rails, and the high PSRR (not specified in the provided data) helps reject upstream noise. The programmable soft-start reduces pop noise during power-up, and the power-good output can be used to mute audio outputs until the supply is stable.
Recommended
Battery-Powered Devices
In battery-powered devices, the TPS74801DRCR's ultra-low VIN range (0.8 V to 5.5 V) enables regulation from a single-cell Li-ion battery (3.0 V to 4.2 V) or even a nearly discharged battery down to 0.8 V. The low dropout of 60 mV maximizes usable battery life by allowing the battery to discharge deeper. The enable pin allows power gating to save energy in standby mode, and the small 10-VSON package is ideal for portable designs.
Recommended
Industrial Sensors and IoT
For industrial sensors and IoT nodes, the TPS74801DRCR provides a stable supply from low-voltage rails, such as 1.8 V or 2.5 V, which are common in modern sensor interfaces. Its power-good output can be used to trigger data acquisition only when the supply is stable, improving measurement accuracy. The programmable soft-start prevents inrush current from disturbing the sensor reading, and the overcurrent protection safeguards the regulator in fault conditions.
Recommended
Networking and Communication
In networking equipment, the TPS74801DRCR powers low-voltage logic and interface ICs from 1.8 V or 2.5 V rails. Its low dropout ensures efficient operation, and the power-good output enables proper sequencing of multiple rails in switches and routers. The enable pin allows remote power control, and the soft-start prevents voltage spikes that could corrupt data transmission. The compact package is suitable for high-density PCB designs.
Recommended
Recommended Products Summary
Engineering reference data for TPS74801DRCR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS74801DRCTG4 | TPS7A5201RPSR | TPS7A9201DSKR | TPS7A8300RGRR |
|---|---|---|---|---|---|
| Package | 10-VSON (3x3 mm) | 10-VSON (3x3 mm) | 10-VSON (3x3 mm) | 10-WSON (3x3 mm) | 20-VQFN (3.5x3.5 mm) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 1.5 A | 1.5 A | [DATA_NEEDED] | [DATA_NEEDED] | 3 A |
| Input Voltage Range | 0.8 V to 5.5 V | 0.8 V to 5.5 V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Output Voltage Range | 0.8 V to 3.6 V | 0.8 V to 3.6 V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Dropout Voltage | 60 mV at 1.5 A | 60 mV at 1.5 A | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Power Good | Yes | Yes | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Soft-Start | Programmable | Programmable | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Ultra-low VIN operation down to 0.8 V (vs TPS7A8300RGRR)
- Low dropout of 60 mV at 1.5 A (vs TPS7A5201RPSR)
- Programmable soft-start (vs TPS7A9201DSKR)
Design Notes
The TPS74801DRCR requires a separate VBIAS supply of 2.7 V to 5.5 V for internal circuitry. Ensure VBIAS is present before or simultaneously with VIN to avoid undefined states. The input voltage VIN can be as low as 0.8 V, but the output voltage must be at least 0.8 V. Use appropriate input and output capacitors (typically 10 uF) as recommended in the datasheet.
Place the input and output capacitors as close as possible to the IN and OUT pins to minimize parasitic inductance. The VBIAS pin should also be decoupled with a 1 uF capacitor. The thermal pad (exposed pad) should be soldered to a large copper area for heat dissipation. Follow the layout guidelines in the datasheet for optimal performance.
Do not exceed the absolute maximum ratings for VIN (5.5 V) or VBIAS (5.5 V). The enable pin has a threshold of 0.4 V (off) and 1.1 V (on); ensure the control signal meets these levels. The soft-start capacitor value determines the startup time; too small a value may cause output overshoot, while too large a value may delay power-up. Refer to the datasheet for recommended values.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 not applicable for this non-automotive part.
