LP38692MP-3.3 Datasheet, PDF (1/28 Pages) Texas Instruments – 1A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

LP38690, LP38692
www.ti.com
SNVS322J – DECEMBER 2004 – REVISED APRIL 2013
LP38690
LP38692 1A Low Dropout CMOS Linear Regulators
Stable with Ceramic Output Capacitors
Check for Samples: LP38690, LP38692
FEATURES
1
•2 2.5% Output Accuracy (25°C)
• Low Dropout Voltage: 450mV @ 1A (typ, 5V
out)
• Wide Input Voltage Range (2.7V to 10V)
• Precision (Trimmed) Bandgap Reference
• Ensured Specs for -40°C to +125°C
• 1µA Off-State Quiescent Current
• Thermal Overload Protection
• Foldback Current Limiting
• PFM, SOT-223 and 6-Lead WSON Packages
• Enable Pin (LP38692)
APPLICATIONS
• Hard Disk Drives
• Notebook Computers
• Battery Powered Devices
• Portable Instrumentation
DESCRIPTION
The LP38690/2 low dropout CMOS linear regulators
provide tight output tolerance (2.5% typical),
extremely low dropout voltage (450mV @ 1A load
current, V_OUT = 5V), and excellent AC performance
utilizing ultra low ESR ceramic output capacitors.
The low thermal resistance of the WSON, SOT-223
and PFM 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.
Dropout Voltage: 450 mV (typ) @ 1A (typ. 5V out).
Ground Pin Current: 55 µA (typ) at full load.
Precision Output Voltage: 2.5% (25°C) accuracy.
Typical Application Circuits
V_IN
1 PF *
V_IN
V_OUT
LP38690
SNS^**
GND
V_OUT
1 PF *
V_IN
V_EN
1 PF *
V_IN
V_OUT
V_EN
LP38692
SNS^**
GND
V_OUT
1 PF *
* Minimum value required for stability.
**WSON package devices only.
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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