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PDF LD39080 Data sheet ( Hoja de datos )
| Número de pieza | LD39080 | |
| Descripción | Ultra low drop BICMOS voltage regulator | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LD39080
Ultra low drop BICMOS voltage regulator
Feature summary
■ 0.8A Guaranteed output current
■ Ultra low dropout voltage (150mV typ. @ 0.8A
load, 20mV typ. @150mA load)
■ Very low quiescent current (1mA typ. @ 0.8A
load, 1µA max @ 25°C in off mode)
■ Logic-controlled electronic shutdown
■ Current and thermal internal limit
■ ±1.5% Output voltage tolerance @ 25°C
■ Fixed and ADJ output voltages: 1.22V, 1.8V,
2.5V, 3.3V, ADJ. (*see order code)
■ Temperature range: -40 to 125°C
■ Fast dynamic response to line and load
changes
■ Stable with ceramic capacitor (see paragraph
7.1, 7.2, 7.3)
■ Available in PPAK, DPAK and DFN8 (4x4mm)
Typical application
■ Microprocessor power supply
■ DSPs power supply
■ Post regulators for switching suppliers
■ High efficiency linear regulator
PPAK
DPAK
DFN8 (4x4 mm)
Description
The LD39080 is a fast ultra low drop linear
regulator which operates from 2.5V to 6V input
supply.
A wide range of output options are available. The
low drop voltage, low noise, and ultra low
quiescent current make it suitable for low voltage
microprocessor and memory applications. The
device is developed on a BiCMOS process which
allows low quiescent current operation
independently of output load current.
Order codes
DPAK (T&R)
LD39080DT12-R
LD39080DT18-R
LD39080DT25-R
LD39080DT33-R
1. Available on request
January 2007
Part numbers
PPAK (T&R)
LD39080PT18-R
LD39080PT25-R
LD39080PT33-R
LD39080PT-R
DFN (1)
LD39080PU12R
LD39080PU18R
LD39080PU25R
LD39080PU33R
LD39080PU-R
Rev. 1
Output voltage
1.22V
1.8V
2.5V
3.3V
ADJ From 1.22 to 5.0V
1/20
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1 page  
LD39080
3 Typical application circuits
Typical application circuits
(CI and CO Capacitors must be placed as close as possible to the IC pins)
Figure 3. LD39080 fixed version with inhibit
1 Inhibit Pin is not internally pulled down/up then it must not be left floating. Disable the device
when connected to GND or to a positive voltage less than 0.3V
Figure 4. LD39080 adjustable version
2 Set R2 as close as possible to 4.7KΩ.
www.DataSheet.in
VO = VREF (1 + R1/R2)
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LD39080
Figure 19. Load transient
Typical performance characteristics
Figure 20. Line transient
VI = 3.5V, IO = 10mA to 0.8A, CI = 1µF, CO = 2.2µF
VI = 3.5V to 5.5V, ILOAD = 10mA, CO = 2.2µF
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| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LD39080.PDF ] | |
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