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PDF LDK320 Data sheet ( Hoja de datos )
| Número de pieza | LDK320 | |
| Descripción | 200 mA high accuracy and high PSRR voltage regulator | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LDK320
200 mA high accuracy and high PSRR voltage regulator
Datasheet - production data
SOT23-5 L
SOT-8 9
Features
Input voltage from 2.5 to 18 V
Very low-dropout voltage (100 mV typ. @
100 mA load)
Low quiescent current (typ. 60 μA, 1 μA in
off mode)
High PSRR: 88 dB@120 Hz
Low noise
Output voltage tolerance: ± 0.5% @ 25 °C
(LDK320A) or ± 2% 25 °C
Output current up to 200 mA
Wide range of output voltages available on
request: fixed from 1.2 V to 12 V with
100 mV step and adjustable
Logic-controlled electronic shutdown
Compatible with ceramic capacitor
COUT = 1 μF
Current, SOA and thermal protections
Available in SOT23-5L and SOT-89
packages
Temperature range: -40 °C to 125 °C
Applications
DSC
TV
BD, DVD
PC
Industrial
Description
The LDK320 is a low drop voltage regulator,
which provides a maximum output current of
200 mA from an input voltage in the range of
2.5 V to 18 V, with a typical dropout voltage of
100 mV.
It is stabilized with a ceramic capacitor on the
output.
The very good dynamic characteristic, combined
with low drop voltage and low quiescent current
make it suitable for low power battery-powered
applications.
The enable logic control function allows the
LDK320 to be in shutdown mode by consuming a
total current lower than 1 μA.
This device also includes a short-circuit current
limiting, thermal and SOA protections.
June 2016
DocID028460 Rev 2
This is information on a product in full production.
1/25
www.st.com
1 page  
LDK320
Typical application
3 Typical application
Figure 4: Typical application circuits
VIN
CIN
1µF
ON
OFF
VI VO
E N L DK 320
GND
COUT
1µF
VOUT VIN
CIN
1µF
ON
OFF
VI VO
E N L DK 320
GND ADJ
VOUT
R1
COUT
1µF
R2
Fix ed output voltage vers ion
V O =V AD J (1+R1/R2)
Adjustable output voltage vers ion
GIPD030820151358MT
Adjustable version and enable pin are not available on SOT-89 package.
DocID028460 Rev 2
5/25
5 Page 
LDK320
Figure 9: Line regulation vs temperature
(VIN = 4.3 to 18 V, VOUT = 3.3 V, IOUT = 1 mA)
Typical characteristics
Figure 10: Line regulation vs temperature
(VIN = 2.5 to 18 V, VOUT = VADJ, IOUT = 1 mA)
Figure 11: Load regulation vs temperature
(VIN = 4.3 V, VOUT = 3.3 V, IOUT = 1 to 200 mA)
Figure 12: Load regulation vs temperature
(VIN = 2.5 V, VOUT = VADJ, IOUT = 1 to 200 mA)
Figure 13: Enable thresholds vs temperature
(IOUT = 1 mA)
Figure 14: Dropout voltage vs temperature
DocID028460 Rev 2
11/25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet LDK320.PDF ] | |
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