LP5912 500mA low-noise low-Iq low-dropout (LDO) linear regulator | TI.com

LP5912 (ACTIVE)

500mA low-noise low-Iq low-dropout (LDO) linear regulator

500mA low-noise low-Iq low-dropout (LDO) linear regulator - LP5912
Datasheet
 

Recommended alternative parts

  • TPS7A90  -  TPS7A90 is 500mA, low noise (4.7uVrms) LDO in a small package (2.5 mm x 2.5mm)
  • TPS745  -  TPS745 is a 500mA ADJUSTABLE output LDO with Wider Vin, lower Iq and lower dropout.

Description

The LP5912 is low-noise LDO that can supply up to 500 mA of output current. Designed to meet the requirements of RF and analog circuits, the LP5912 device provides low noise, high PSRR, low quiescent current, and low line and load transient response. The LP5912 offers class-leading noise performance without a noise bypass capacitor and with the ability for remote output capacitance placement.

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

This device is available with fixed output voltages from 0.8 V to 5.5 V in 25-mV steps. Contact Texas Instruments Sales for specific voltage option needs.

Features

  • Input Voltage Range: 1.6 V to 6.5 V
  • Output Voltage Range: 0.8 V to 5.5 V
  • Output Current up to 500 mA
  • Low Output-Voltage Noise: 12 µVRMS Typical
  • PSRR at 1 kHz: 75 dB Typical
  • Output Voltage Tolerance (VOUT ≥ 3.3 V): ±2%
  • Low IQ (Enabled, No Load): 30 µA Typical
  • Low Dropout (VOUT ≥ 3.3 V): 95 mV Typical at 500-mA Load
  • Stable With 1-µF Ceramic Input and Output Capacitors
  • Thermal-Overload and Short-Circuit Protection
  • Reverse Current Protection
  • No Noise Bypass Capacitor Required
  • Output Automatic Discharge for Fast Turnoff
  • Power-Good Output With 140-µs Typical Delay
  • Internal Soft-Start to Limit the In-rush Current
  • –40°C to +125°C Operating Junction Temperature Range

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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 @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
LP5912 LP5907 LP5910
Fixed Output     Fixed Output     Fixed Output    
0.5     0.25     0.3    
6.5     5.5     3.3    
1.6     2.2     1.3    
3.3     4.5     1.8    
0.9     1.2     0.9    
0.9
1
1.1
1.2
1.5
1.8
2.5
2.8
3
3.3
5    
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
1.8    
WSON | 6     DSBGA | 4
SOT-23 | 5
X2SON | 4    
DSBGA | 4
WSON | 6    
Enable
Output Discharge
Power Good
Reverse Current Protection
Soft Start    
Enable
Output Discharge    
Enable
Output Discharge
Reverse Current Protection    
1     1     1    
-40 to 125     -40 to 125     -40 to 125    
71     193     79    
12     6.5     12    
0.40 | 1ku     0.14 | 1ku     0.14 | 1ku    
Catalog     Catalog     Catalog    
Ceramic     Ceramic     Ceramic    
40     60     40    
3     2     3    
150     50     120    
0.03     0.012     0.012    
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 (DSBGA)
See datasheet (WSON)    

Design tool

WEBENCH® Designer LP5912

  Min   Max Range
Vin  V 1.6 to 6.5V
Product Option
Vout  V
Iout  A ≤ 0.5A
Ambient Temp  °C -40.0 to 125.0°C