TPS7A9401DSCR Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
TPS7A9401DSCR is a 1 A ultra-low noise, ultra-high PSRR adjustable LDO RF voltage regulator by Texas Instruments, in a 10-pin SON package. Key specs: 1.7 V to 5.7 V input range, 0.15 V typical dropout, adjustable output, 10-pin WSON package. From $2.40, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 11
- Lifecycle
- ACTIVE
- Datasheet
- TPS7A9401DSCR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.7441(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS7A9401DSCR?
- Ultra-low output noise floor for clean RF supply rails in sensitive receiver and VCO circuits
- Ultra-high PSRR (Power Supply Rejection Ratio) rejects input ripple from DC-DC converter stages at MHz frequencies
- 1 A continuous output current with only 0.15 V typical dropout voltage minimizes power dissipation
- 1.7 V to 5.7 V input range covers single-cell Li-Ion and regulated 5 V bus applications
- Adjustable output voltage via external resistor divider for flexible RF subsystem power design
What is TPS7A9401DSCR used for?
TPS7A9401DSCR is optimized for powering noise-sensitive RF components such as VCOs, PLLs, low-noise amplifiers (LNAs), and ADC analog supplies in wireless communication and test equipment designs. Its ultra-high PSRR suppresses switching noise from preceding DC-DC converters up to several MHz, eliminating spurs on the RF output that would otherwise degrade phase noise and receiver sensitivity. The 1 A output capability and 0.15 V dropout make it efficient as a post-regulator behind a switching pre-regulator in 4G/5G radio units, Wi-Fi access points, and software-defined radio (SDR) platforms.
What are the specifications of TPS7A9401DSCR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.24V |
| Dropout Voltage1-Nom | 0.15V |
| Input Voltage-Max | 5.7V |
| Input Voltage-Min | 1.7V |
| JESD-30 Code | R-PDSO-N10 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 5.5V |
| Output Voltage1-Min | 0.4V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC10,.12,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 1% |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia, Philippines, Thailand |
Where can I find the TPS7A9401DSCR datasheet?
TPS7A9401DSCR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS7A9401DSCR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of TPS7A9401DSCR and how does it affect efficiency in battery-powered RF designs?
TPS7A9401DSCR has a typical dropout voltage of 0.15 V and a maximum of 0.24 V at 1 A load current. In a 3.6 V Li-Ion powered design where the LDO output is set to 3.3 V, the device remains in regulation down to a battery voltage of 3.45 V typical, extracting most of the usable battery charge and allowing the RF subsystem to operate through most of the discharge curve before dropout occurs.
Why is TPS7A9401DSCR preferred over a standard LDO for powering a PLL in a 5G radio design?
Standard LDOs typically achieve 40 dB to 60 dB of PSRR at 1 MHz, while TPS7A9401DSCR provides significantly higher PSRR at RF frequencies, suppressing DC-DC converter switching noise that would otherwise couple into the PLL VCO supply and raise phase noise by several dBc/Hz. Even a 1 mV supply ripple at the VCO input can translate to tens of femtoseconds of jitter, so the ultra-high PSRR of TPS7A9401DSCR directly improves PLL lock stability and spectral purity in 5G NR frequency synthesis chains.
How is the output voltage of TPS7A9401DSCR set and what voltage range is achievable?
The output voltage of TPS7A9401DSCR is set by an external resistor divider between the output pin, the feedback (FB) pin, and ground, following the formula V_OUT = V_REF x (1 + R1/R2), where V_REF is the internal reference voltage (typically 0.8 V to 1.0 V). The adjustable range spans from approximately 0.8 V to 5.5 V within the 1.7 V to 5.7 V input constraint, covering all common RF supply voltages from 1.0 V digital rails to 3.3 V analog supplies used in LNA and mixer circuits.
What package does TPS7A9401DSCR use and how does its thermal performance compare to similar LDO packages?
TPS7A9401DSCR uses a 10-pin WSON (SON) package measuring approximately 3 mm x 2 mm with an exposed thermal pad on the bottom. At 1 A output with a 0.5 V input-to-output differential, the device dissipates 500 mW; the exposed thermal pad, when soldered to a 2-layer PCB copper pour, achieves a junction-to-board thermal resistance of approximately 20°C/W, keeping junction temperature below 85°C even at 25°C ambient without additional heatsinking.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $5.4100 | $135.25 |
| 100+ | $2.4160 | $241.60 |
| 107+ | $1.8859 | $201.79 |
| 138+ | $1.8150 | $250.47 |
| 173+ | $1.7441 | $301.73 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit