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

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Linear regulators (LDO)

 
Output Options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed Output Options (V)
Package Group
Features
Regulated Outputs (#)
Operating Temperature Range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. Price (US$)
Rating
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
LP5910 LP5907 LP5912
Fixed Output     Fixed Output     Fixed Output    
0.3     0.25     0.5    
3.3     5.5     6.5    
1.3     2.2     1.6    
1.8     4.5     3.3    
0.9     1.2     0.9    
0.9
1
1.1
1.2
1.8    
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    
0.9
1
1.1
1.2
1.5
1.8
2.5
2.8
3
3.3
5    
DSBGA | 4
WSON | 6    
DSBGA | 4
SOT-23 | 5
X2SON | 4    
WSON | 6    
Enable
Output Discharge
Reverse Current Protection    
Enable
Output Discharge    
Enable
Output Discharge
Power Good
Reverse Current Protection
Soft Start    
1     1     1    
-40 to 125     -40 to 125     -40 to 125    
79     193     71    
12     6.5     12    
0.14 | 1ku     0.14 | 1ku     0.40 | 1ku    
Catalog     Catalog     Catalog    
Ceramic     Ceramic     Ceramic    
40     60     40    
3     2     3    
120     50     150    
0.012     0.012     0.03    
See datasheet (DSBGA)
See datasheet (WSON)    
See datasheet (DSBGA)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
4X2SON: 1 mm2: 1 x 1 (X2SON | 4)    
See datasheet (WSON)    

Design tool

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