Texas Instruments
36 V, 1 A ultra-low-noise (4 µVRMS) RF LDO, 20-pin 5×5 mm VQFN
The TI TPS7A4700 is a high-voltage, ultra-low-noise positive linear regulator. It accepts up to 36 V input and delivers up to 1 A. Output noise is 4 µVRMS (10 Hz to 100 kHz) and PSRR is 82 dB at 100 Hz. Its ANY-OUT feature sets the output from 1.4 V to 20.5 V in 100 mV steps through PCB pin connections, with no external resistors. Typical uses include supplies for VCOs, synthesizers, RF transceivers, op amps, ADCs and DACs, and post-regulation of DC-DC converters in test and measurement, medical, audio, telecom and industrial systems.
Key Specifications
Verify against the original datasheet before quoting.
| Package | VQFN-20 (RGW), 5 mm x 5 mm; tape & reel 3000 |
|---|---|
| Input Voltage | 3 V to 35 V recommended (36 V abs. max) |
| Output Voltage | 1.4 V to 20.5 V (ANY-OUT, 100 mV steps) |
| Output Current | 1 A |
| Output Noise / PSRR | 4 µVRMS (10 Hz–100 kHz); 82 dB at 100 Hz |
| Operating Junction Temperature (Tj) | -40 °C to 125 °C |
Market Status
Allocated – Limited Market Stock Factory lead time is currently around 26 weeks.
Quality & Traceability
Cerametronics is ISO 9001 certified and products are RoHS compliant, with counterfeit screening and full traceability on every shipment. A Certificate of Conformance is available on request. For allocation-sensitive or high-risk lots, independent third-party lab verification can be arranged — just flag it on your RFQ. Any lot that fails incoming inspection is quarantined and never shipped.
FAQ
How is the output voltage set on the TPS7A4700?
It uses TI's ANY-OUT pins: grounding specific pins on the PCB programs the output from 1.4 V to 20.5 V in 100 mV steps, with no external resistors.
What is the dropout voltage at full load?
The datasheet specifies 307 mV typical and 450 mV maximum at 1 A.
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