TPS7A4701RGWR - 1A, 35V Ultra-Low Noise LDO | Texas Instruments
MPN: TPS7A4701RGWR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
Compatible alternatives for TPS7A4701RGWR. Verify specifications match your application requirements.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LT3042
π Reference alternative (not in catalog)
ADM7150
π Reference alternative (not in catalog)
TPS7A3301
π Reference alternative (not in catalog)
LT3094
π Reference alternative (not in catalog)
TPS7A5201
π 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 β Regulated output voltage |
| Pin 5 | GND β Ground |
| Pin 6 | EN β Enable (active high) |
| Pin 7 | IN β Input supply |
| Pin 8 | NR/SS β Noise reduction/soft-start capacitor |
| Pin 9 | FB β Feedback pin for output voltage setting |
| Pin 10 | GND β Ground |
| Pin 11 | OUT β Regulated output voltage |
| Pin 12 | OUT β Regulated output voltage |
| Pin 13 | OUT β Regulated output voltage |
| Pin 14 | OUT β Regulated output voltage |
| Pin 15 | GND β Ground |
| Pin 16 | GND β Ground |
| Pin 17 | GND β Ground |
| Pin 18 | GND β Ground |
| Pin 19 | GND β Ground |
| Pin 20 | 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
TPS7A4701RGWR is suitable for 6 applications: High-End Audio DAC Power Supply, RF Transceiver Power Supply, Precision ADC/DAC Reference, Industrial 24V Bus System, Test and Measurement Instrumentation, Battery-Powered Portable Devices.
High-End Audio DAC Power Supply
Provides clean 5V rail for audio DACs with 4.17uVrms noise.
Recommended
RF Transceiver Power Supply
Supplies low-noise power to PLL/VCO circuits in RF transceivers.
Recommended
Precision ADC/DAC Reference
Buffers reference voltage for precision data converters.
Recommended
Industrial 24V Bus System
Regulates 24V industrial bus down to lower voltages with low noise.
Recommended
Test and Measurement Instrumentation
Provides clean power rails for sensitive measurement circuits.
Recommended
Battery-Powered Portable Devices
Regulates battery voltage with low dropout and low noise for portable audio.
Recommended
Recommended Products Summary
Engineering reference data for TPS7A4701RGWR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | Alternatives |
|---|---|---|
| Output Current | 1 A | Array |
| Output Noise | 4.17 uVrms | Array |
| PSRR at 1kHz | 72 dB | Array |
| Input Voltage Range | 3 V to 35 V | Array |
| Dropout Voltage | 200 mV at 1 A | Array |
| Quiescent Current | 6.4 mA | Array |
| Package | VQFN-20 (5x5 mm) | Array |
| Enable Pin | Yes | Array |
Key Differentiators
- Highest output current in ultra-low-noise class (vs LT3042)
- Widest input voltage range (vs ADM7150)
- Best PSRR at 1kHz (vs TPS7A5201)
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.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified - not intended for automotive safety applications.
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