Texas Instruments
300-mA ultra-low-noise LDO, 3.3 V fixed, 7 µVrms, 95 dB PSRR, 6.5 µA IQ, 1 x 1 mm X2SON-4
The Texas Instruments TPS7A2033P is the 3.3 V fixed, active-discharge (P) version of the TPS7A20 family of 300-mA ultra-low-noise, low-IQ LDO regulators with high PSRR. It delivers 7 µVrms output noise without a noise-bypass capacitor, 95 dB PSRR at 1 kHz and only 6.5 µA quiescent current from a 1.6 V to 6.0 V input, in a 1 x 1 mm X2SON package. It is designed for RF, imaging and sensor rails in smartphones, wearables, hearables, cameras and other battery-powered devices. Current lead time is around 26 weeks with authorized stock constrained; Cerametronics helps buyers find traceable stock.
Key Specifications
Verify against the original datasheet before quoting.
| Output Voltage / Current | 3.3 V fixed, ±1.5% max tolerance; 0 to 300 mA |
|---|---|
| Input Voltage Range | 1.6 V to 6.0 V |
| Output Noise / PSRR | 7 µVrms (10 Hz–100 kHz, 300 mA); 95 dB at 1 kHz (20 mA), 92 dB at 1 kHz (300 mA) |
| Dropout / Quiescent Current | 140 mV max at 300 mA (DQN, VOUT 2.5–5.5 V); IGND 6.5 µA typ, 15 µA max over full TJ |
| Operating Junction Temperature (TJ) | -40 to +125 °C (datasheet specifies junction, not ambient) |
| Package | X2SON-4 (DQN), 1.0 x 1.0 mm body with thermal pad |
Market Status
Scarce in Distribution – Spot Stock Sought 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
What do the P, DQN and R parts of TPS7A2033PDQNR mean?
TPS7A20 is the family, 33 is the 3.3 V fixed output, P denotes the version with active output discharge when disabled, DQN is the 1 x 1 mm X2SON-4 package and R is the large tape-and-reel orderable. A T suffix, where TI offers it, denotes the small-reel quantity of the same part.
What alternatives exist if the X2SON version is unavailable?
The same family is offered in SOT-23-5 (DBV) and 0.6 mm-pitch DSBGA (YCJ/YCK), but these are different footprints. TI names the TLV773 as a pin-for-pin, cost-optimized alternative for less noise-sensitive rails, and the TPS7A20L as the variant with a 1.2 V logic-compatible enable.
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