LP38690 1A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors | TI.com

LP38690 (ACTIVE)

1A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

 

Description

The LP38690 and LP38692 low-dropout CMOS linear regulators provide tight output tolerance (2.5% typical), extremely low dropout voltage (450 mV at a 1-A load current, VOUT = 5 V), and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow the full operating current to be used even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

For all available packages, see the orderable addendum at the end of the data sheet.

Features

  • Wide Input Voltage Range (2.7 V to 10 V)
  • 2.5% Output Accuracy (25°C)
  • Low Dropout Voltage: 450 mV at 1 A
    (typical, 5 VOUT)
  • Precision (Trimmed) Bandgap Reference
  • Ensured Specifications for –40°C to 125°C
  • 1-µA Off-State Quiescent Current
  • Thermal Overload Protection
  • Foldback Current Limiting
  • 3-Lead TO-252, 5-Lead SOT-223, and 6-Bump WSON Packages
  • Enable Pin (LP38692)
  • Ground Pin Current: 55 µA (typical) at Full Load
  • Precision Output Voltage: 2.5% (25°C) Accuracy

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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 @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
LP38690 LP38692
Fixed Output     Fixed Output    
1     1    
10     10    
2.7     2.7    
5     5    
1.8     1.8    
1.8
2.5
3.3
5    
1.8
2.5
3.3
5    
TO-252 | 3
WSON | 6    
SOT-223 | 5
WSON | 6    
Enable
Foldback Overcurrent Protection    
Enable
Foldback Overcurrent Protection    
1     1    
-40 to 125     -40 to 125    
51     51    
80     80    
0.53 | 1ku     0.53 | 1ku    
Catalog     Catalog    
Ceramic     Ceramic    
50     50    
2     1.4    
450     450    
0.055     0.055    
3TO-252: 40 mm2: 6.1 x 6.58 (TO-252 | 3)
See datasheet (WSON)    
5SOT-223: 45 mm2: 6.96 x 6.5 (SOT-223 | 5)
See datasheet (WSON)    

Design tool

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LP38690

  Min   Max Range
Vin  V 2.75 to 10.0V
Vout  V 1.8 to 5V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C


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