LP38690_15 Datasheet, PDF (1/31 Pages) Texas Instruments – LP38690, LP38692 1-A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

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LP38690, LP38692
SNVS322L – DECEMBER 2004 – REVISED MARCH 2015
LP38690, LP38692 1-A Low Dropout CMOS Linear Regulators
Stable with Ceramic Output Capacitors
1 Features
•1 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 V_OUT)
• 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
2 Applications
• Hard Disk Drives
• Notebook Computers
• Battery Powered Devices
• Portable Instrumentation
3 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, V_OUT = 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LP38690
TO-252 (3)
WSON (6)
6.58 mm x 6.10 mm
3.00 mm x 3.00 mm
LP38692
SOT-223 (5)
WSON (6)
6.50 mm x 3.56 mm
3.00 mm x 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic for LP38690
V_IN
IN
OUT
V_OUT
1 µF*
LP38690
SNS^**
GND
1 µF*
Simplified Schematic for LP38692
V_IN
IN
OUT
V_OUT
V_EN
1 2F *
EN
LP38692
SNS^**
GND
1 2F *
* Minimum value required for stability.
**WSON package devices only.
* Minimum value required for stability.
**WSON package devices only.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.