LD39020
Datasheet
200 mA very low quiescent current linear regulator IC
Features
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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 C
OUT
= 0.47 µF
Internal current limit and thermal protections
Available in DFN4 1x1 and SOT23-5L packages
Operating temperature range: -40 °C to 125 °C
DFN4 1x1
SOT23-5L
Applications
Maturity status link
LD39020
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Mobile phones
Tablets
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 DFN4 1x1 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.
DS9956
-
Rev 5
-
January 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
LD39020
Maximum ratings
4
Maximum ratings
Table 2.
Absolute maximum ratings
Symbol
V
IN
V
OUT
V
EN
I
OUT
P
D
T
STG
T
OP
Input voltage
Output voltage
Enable input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
Parameter
Value
- 0.3 to 7
- 0.3 to V
IN
+ 0.3
- 0.3 to 7
Internally limited
Internally limited
- 40 to 150
- 40 to 125
Unit
V
V
V
mA
mW
°C
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions is not implied. All values are referred to GND.
Table 3.
Thermal data
Symbol
R
thJA
R
thJC
R
thJA
Parameter
Thermal resistance junction-ambient, DFN4 1x1
Thermal resistance junction-case, SOT23-5L
Thermal resistance junction-ambient, SOT23-5L
Value
250
81
255
Unit
°C/W
°C/W
°C/W
Table 4.
ESD performance
Symbol
Parameter
Test conditions
HBM
ESD
ESD Protection voltage
MM
CDM
Value
4
400
500
Unit
kV
V
V
DS9956
-
Rev 5
page 5/30
stm32/stm8
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