LD39030
Datasheet
300 mA very low dropout linear regulator IC
Features
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Input voltage from 1.5 to 5.5 V
Ultra low dropout voltage (300 mV typ. at 300 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)
300 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 constant current and thermal protections
Available in DFN4 1x1
Operating temperature range: -40 °C to 125 °C
DFN4 1x1
Applications
Maturity status link
LD39030
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Mobile phones
Tablets
Digital still cameras (DSC)
Cordless phones and similar battery-powered systems
Portable media players
Description
The
LD39030
high accuracy voltage regulator provides 300 mA of maximum current
from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of
300 mV.
It is available in DFN4 1 x 1 package, 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
LD39030
suitable for low power battery-operated applications.
An enable logic control function puts the
LD39030
in shutdown mode allowing a total
current consumption lower than 0.1 µA. Constant current and thermal protection are
provided.
DS11386
-
Rev 4
-
May 2018
For further information contact your local STMicroelectronics sales office.
www.st.com
LD39030
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
Parameter
Input voltage
Output voltage
Enable input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
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
Parameter
Thermal resistance junction-ambient
Value
250
Unit
°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
DS11386
-
Rev 4
page 5/20
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