LP38691_15 Datasheet, PDF (1/34 Pages) Texas Instruments – LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors

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LP38691, LP38693, LP38691-Q1, LP38693-Q1
SNVS321N – JANUARY 2005 – REVISED MARCH 2015
LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators
Stable With Ceramic Output Capacitors
1 Features
•1 Wide Input Voltage Range (2.7 V to 10 V)
• All WSON Options are Available as AEC-Q100
Grade 1
• 2% Output Accuracy (25°C)
• Low Dropout Voltage: 250 mV at 500 mA (Typical,
5 V Out)
• Precision (Trimmed) Bandgap Reference
• Ensured Specs for –40°C to 125°C
• 1-µA Off-State Quiescent Current
• Thermal Overload Protection
• Foldback Current Limiting
• Ground Pin Current: 55 µA (typical) at full load
• Enable Pin (LP38693)
2 Applications
• Hard Disk Drives
• Notebook Computers
• Battery-Powered Devices
• Portable Instrumentation
3 Description
The LP3869x low-dropout CMOS linear regulators
provide tight output tolerance (2% typical), extremely
low dropout voltage (250 mV at 500-mA load current,
V_OUT = 5 V), and excellent AC performance using
ultra-low equivalent series resistance (ESR) ceramic
output capacitors.
The low thermal resistance of the WSON, SOT-223,
and TO-252 packages allow use of the full operating
current 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, thus
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)
LP38691
TO-252 (3)
WSON (6)
6.58 mm × 6.10 mm
3.00 mm × 3.00 mm
LP38693
SOT-223 (5)
WSON (6)
6.50 mm × 3.56 mm
3.00 mm × 3.00 mm
LP38691-Q1
LP38693-Q1
WSON (6)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application Circuits
V_IN
1 µF *
IN
OUT
LP38691
SNS^**
GND
V_OUT
1 µF *
V_IN
V_EN
1 µF *
IN
OUT
EN
LP38693
SNS^**
GND
V_OUT
1 µF *
* 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.