(ACTIVE) 250mA Ultra-Low-Noise Low-IQ LDO


Functional Diagram


The LP5907 is a low-noise LDO that can supply up to 250 mA output current. Designed to meet the requirements of RF and analog circuits, the LP5907 device provides low noise, high PSRR, low quiescent current, and low line or load transient response figures. Using new innovative design techniques, the LP5907 offers class-leading noise performance without a noise bypass capacitor and the ability for remote output capacitor placement.

The device is designed to work with a 1-µF input and a 1-µF output ceramic capacitor (no separate noise bypass capacitor is required).

This device is available with fixed output voltages from 1.2 V to 4.5 V in 25-mV steps. Contact Texas Instruments Sales for specific voltage option needs.


  • Input Voltage Range: 2.2 V to 5.5 V
  • Output Voltage Range: 1.2 V to 4.5 V
  • Stable With 1-µF Ceramic Input and Output Capacitors
  • No Noise Bypass Capacitor Required
  • Remote Output Capacitor Placement
  • Thermal-Overload and Short-Circuit Protection
  • –40°C to 125°C Operating Junction Temperature
  • Low Output Voltage Noise: < 6.5 µVRMS
  • PSRR: 82 dB at 1 kHz
  • Output Voltage Tolerance: ±2%
  • Very Low IQ (Enabled): 12 µA
  • Low Dropout: 120 mV (typical)
  • Create a Custom Design Using the LP5907 With the WEBENCH® Power Designer

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Iout (Max) (A) 0.25    
Output Options Fixed Output    
Vin (Min) (V) 2.2    
Vin (Max) (V) 5.5    
Fixed Output Options (V) 1.2^1.5^1.8^1.9^2.2^2.5^2.7^2.75^2.8^2.85^2.9^3^3.1^3.2^3.3^3.7^4^4.5    
Vout (Min) (V) 1.2    
Vout (Max) (V) 4.5    
Iq (Typ) (mA) 0.012    
Vdo (Typ) (mV) 50    
Accuracy (%) 2    
Noise (uVrms) 6.5    
PSRR @ 100KHz (dB) 60    
Output Capacitor Type Ceramic    
Rating Catalog    
Operating Temperature Range (C) -40 to 125    
Pin/Package 4DSBGA^4X2SON^5SOT-23    

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Technical Documents

Datasheet (1)

Application notes (4)

User guides (1)

Selection guides (3)

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