LP5910 300mA Low-Noise Low-IQ LDO | TI.com

LP5910 (ACTIVE)

300mA Low-Noise Low-IQ LDO

300mA Low-Noise Low-IQ LDO - LP5910
Datasheet
 

Description

The LP5910 is a low-noise LDO that can supply up to 300 mA of output current. Designed to meet the requirements of RF and analog circuits, this device provides low noise, high PSRR, low quiescent current, and superior line transient and load transient response. Using new innovative design techniques the LP5910 offers class-leading noise performance without a noise bypass capacitor and with the option for remote output capacitor placement.

The device contains a reverse current protection circuit that prevents a reverse current flow through the LDO to the IN pin when the input voltage is lower than the output voltage.

When the Enable (EN) pin is low, and the output is in an OFF state, an automatic output discharge circuit discharges the output capacitance for fast turnoff.

With its low input and low output voltage range the LP5910 is well-suited as a post DC-DC regulator (post BUCK regulator) or for single- or dual-cell applications.

The device is designed to work with a 1-µF input and a 1-µF output ceramic capacitor. A separate noise bypass capacitor is not required.

This device is available with fixed output voltages from 0.8 V to 2.3 V in 25-mV steps. Contact Texas Instruments Sales for specific voltage option needs.

Features

  • Input Voltage Range: 1.3 V to 3.3 V
  • Output Voltage Range: 0.8 V to 2.3 V
  • Output Current: 300 mA
  • PSRR: 75 dB at 1 kHz
  • Output Voltage Tolerance: ±2%
  • Low Dropout: 120 mV (Typical)
  • Very Low IQ (Enabled, No Load): 12 µA
  • Low Output-Voltage Noise: 12 µVRMS
  • Stable with Ceramic Input and Output Capacitors
  • Thermal Overload Protection
  • Short-Circuit Protection
  • Reverse Current Protection
  • Automatic Output Discharge for Fast Turnoff
  • Create a Custom Design Using the LP5910 With the WEBENCH® Power Designer

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Parametrics Compare all products in Single Channel LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
LP5910 TPS720 TPS7A10
0.3     0.35     0.3    
Fixed Output     Fixed Output     Fixed Output    
1.3     1.1     0.75    
3.3     4.5     3.3    
0.9
1
1.1
1.2
1.8    
0.9
1
1.05
1.1
1.15
1.2
1.3
1.5
1.7
1.8    
0.6
0.8
1.05
1
1.1
1.2
1.5
1.8
2.5
2.8
3    
0.9     0.9     0.5    
1.8     1.8     3    
0.012     0.038     0.005    
120     110     70    
3     2     1.5    
12     48     110    
40     55     36    
Ceramic     Ceramic     Ceramic    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
4DSBGA
6WSON    
5DSBGA
6WSON    
5DSBGA    

WEBENCH® Designer LP5910

  Min   Max Range
Vin  V 1.3 to 3.3V
Product Option
Vout  V
Iout  A ≤ 0.3A
Ambient Temp  °C -40.0 to 125.0°C