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LP5907MFX-3.3/NOPB

250mA LDO, 3.3V fixed, 6.5uVrms noise, SOT-23-5

8990

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Manufacturer Part：

LP5907MFX-3.3/NOPB

Package：

SOT-23-5 (2.9 x 1.6 mm)

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Description

Product Overview

The LP5907MFX-3.3/NOPB from Texas Instruments is a 250mA ultra-low-noise LDO with fixed 3.3V output in a SOT-23-5 package. Identical to the 2.8V version except output voltage. With 6.5uVrms noise, 82dB PSRR at 1kHz, and 25uA Iq, it is the go-to LDO for clean 3.3V RF and analog supplies.

Key Specifications

Output Voltage 3.3V fixed
Output Current 250mA
Dropout Voltage 110mV @ 250mA
Noise 6.5uVrms (10Hz-100kHz)
PSRR 82dB @ 1kHz
Iq 25uA typical
Shutdown Iq 1uA
Accuracy +/-2%
Vin Range 2.7V to 5.5V
Operating Temp -40 to +125 C
Package SOT-23-5

Features

  • 6.5uVrms ultra-low output noise
  • 82dB PSRR at 1kHz
  • 250mA output with 110mV dropout
  • 25uA Iq with 1uA shutdown
  • +/-2% accuracy over temperature
  • Stable with 1uF ceramic capacitor

Applications

  • RF transceiver 3.3V supply
  • WiFi/BLE module power
  • Audio DAC analog supply
  • Low-noise sensor power

The LP5907MFX-3.3/NOPB from Texas Instruments is a 250mA ultra-low-noise LDO with fixed 3.3V output in a SOT-23-5 package. Identical to the 2.8V version except output voltage. With 6.5uVrms noise, 82dB PSRR at 1kHz, and 25uA Iq, it is the go-to LDO for clean 3.3V RF and analog supplies.

The LP5907MFX-3.3/NOPB operates as described in the product overview. Key subsystems include the input stage, processing/gain stage, output stage, and protection circuitry as detailed in the datasheet.

Pin Name Type Description
1 EN Input Enable (active high)
2 GND Power Ground
3 IN Input Unregulated input (2.7-5.5V)
4 OUT Output Regulated 3.3V output
5 NC – No connect
  • RF transceiver 3.3V supply
  • WiFi/BLE module power
  • Audio DAC analog supply
  • Low-noise sensor power
Model Manufacturer Package Notes
LP5907MFX-2.8/NOPB TI SOT-23-5 2.8V version
TLV70033DDCR TI SOT-23-5 Lower cost alternative
TPS73633DBVR TI SOT-23-5 300mA, similar spec
ADP122AUJZ-3.3-R7 ADI TSOT-23-5 500mA alternative
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