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PDF LD39020 Data sheet ( Hoja de datos )
| Número de pieza | LD39020 | |
| Descripción | 200 mA very low quiescent current linear regulator IC | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LD39020 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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LD39020
200 mA very low quiescent current linear regulator IC
Datasheet - production data
DFN1x1-4L
SOT23-5L
Features
Input voltage from 1.5 to 5.5 V
Ultra low dropout voltage (200 mV typ. at
200 mA load)
Very low quiescent current (20 µA typ at no
load, 0.03 µA typ in off mode)
Output voltage tolerance: ±0.5% (A version)
or ± 2.0% @ 25 °C (standard version)
200 mA guaranteed output current
High PSRR (80 dB@1 kHz, 50 db@100
kHz)
Wide range of output voltages available on
request: from 0.8 V up to 5.0 V in 50 mV
step
Logic-controlled electronic shutdown
Internal soft-start
Optional output voltage discharge feature
Compatible with ceramic capacitor COUT =
0.47 µF
Internal constant current and thermal
protections
Available in DFN 1x1-4L and SOT23-5L
Operating temperature range: -40 °C to
125 °C
Applications
Mobile phones
Personal digital assistants (PDAs)
Digital still cameras (DSC)
Cordless phones and similar battery-
powered systems
Portable media players
Description
The LD39020 high accuracy voltage regulator
provides 200 mA of maximum current from an
input voltage ranging from 1.5 V to 5.5 V, with a
typical dropout voltage of 200 mV.
It is available in DFN 1x1-4L and SOT23-5L
packages, allowing the maximum space saving.
The device is stabilized with a ceramic capacitor
on the output. The ultra low drop voltage, low
quiescent current and low noise features,
together with the internal soft-start circuit, make
the LD39020 suitable for low power battery-
operated applications.
An enable logic control function puts the
LD39020 in shutdown mode allowing a total
current consumption lower than 0.1 µA. Constant
current and thermal protection are provided.
June 2015
DocID025316 Rev 3
This is information on a product in full production.
1/30
www.st.com
1 page  
LD39020
1 Diagram
Figure 1: Block diagram
Diagram
The output discharge MOSFET is optional.
DocID025316 Rev 3
5/30
5 Page 
LD39020
Electrical characteristics
Symbol
VEN
IEN
TON(2)
TSHDN
COUT
Parameter
Enable input
logic low
Enable input
logic high
Enable pin input
current
Turn on time
Thermal
shutdown
Hysteresis
Output capacitor
Test conditions
VIN = 1.5 V to 5.5 V
-40 °C<TJ<125 °C
VIN = 1.5 V to 5.5 V
-40 °C<TJ<125 °C
VEN = VIN
Capacitance (see Figure 17:
"Stability area vs (COUT, ESR)")
Min. Typ.
1
100
160
20
0.47
Max.
0.4
100
22
Unit
V
nA
µs
°C
µF
Notes:
(1)Not applicable for Vout(nom) > 4.5 V
(2)Turn-on time is time measured between the enable input just exceeding VEN high value and the output voltage
just reaching 95 % of its nominal value
DocID025316 Rev 3
11/30
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LD39020.PDF ] | |
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