ST LD39015J12R, LD39015JJ13R, LD39015J15R, LD39015J18R, LD39015J28R User Manual
Features
■ Input voltage from 1.5 to 5.5 V
■ Ultra low dropout voltage (90 mV typ. at 100
mA load)
■ Very low quiescent current (20 µA typ. at no
load, 35 µA typ. at 150 mA load, 1 µA max in off
mode)
■ Low noise (54 µV
= 1.8 V)
V
OUT
■ Output voltage tolerance: ± 2.0% @ 25 °C
■ 150 mA guaranteed output current
■ Wide range of output voltages available on
request: 0.8 V to 4.5 V with 100 mV step
■ Logic-controlled electronic shutdown
■ Compatible with ceramic capacitor
C
= 1 µF
OUT
■ Internal current and thermal limit
■ Flip-chip 4 bumps 1.1 x 1.1 mm.
■ Temperature range: -40 °C to 125 °C
from 10 Hz to 100 kHz at
RMS
LD39015Jxx
150 mA low quiescent current
low noise voltage regulator
Flip-chip 4
74 dB at low frequencies and starts to roll off at 10
kHz. Enable logic control function puts the
LD39015Jxx in shut-down mode allowing a total
current consumption lower than 1 µA. The device
also includes a short-circuit constant current
limiting and thermal protection. Typical
applications are mobile phones, personal digital
assistant (PDAs), cordless phone and similar
battery powered systems.
Description
The LD39015Jxx provides 150 mA maximum
current from an input voltage ranging from 1.5 V
to 5.5 V with a typical dropout voltage of 80 mV. It
is stable with ceramic capacitor. The ultra low
drop-voltage, low quiescent current and low noise
features make it suitable for low power battery
powered applications. Power supply rejection is
Table 1. Device summary
Part numbers Order codes Output voltages
LD39015JXX12 LD39015J12R 1.2 V
August 2009 Doc ID 15968 Rev 2 1/17
LD39015JXX13 LD39015JJ13R 1.3 V
LD39015JXX15 LD39015J15R 1.5 V
LD39015JXX18 LD39015J18R 1.8 V
LD39015JXX28 LD39015J28R 2.8 V
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17
Contents LD39015Jxx
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Different output voltage versions of the LD39015Jxx
available on request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17 Doc ID 15968 Rev 2
LD39015Jxx Diagram
1 Diagram
Figure 1. Block diagram
OUT
IN
IN
BandGap
BandGap
1.22 V
1.22 V
Trimming
Trimming
Thermal
Thermal
Protection
Protection
OUT
R1
R1
R2
R2
EN
EN
Enable
Enable
GND
GND
Doc ID 15968 Rev 2 3/17
Pin configuration LD39015Jxx
2 Pin configuration
Figure 2. Pin connection (top view)
Table 2. Pin description
Pin n° Symbol Function
A2 EN Enable pin logic input: Low=shutdown, High=active
A1 GND Common ground
B2 IN Input voltage of the LDO
B1 OUT Output voltage
4/17 Doc ID 15968 Rev 2
LD39015Jxx Typical application
3 Typical application
Figure 3. Typical application circuit
V
V
V
IN
IN
IN
IN
OUT
OUT
V
OUT
OUT
1 µF
1 µF
V
V
EN
EN
EN
EN
GND
GND
1 µF
1 µF
Load
Load
Doc ID 15968 Rev 2 5/17
Maximum ratings LD39015Jxx
4 Maximum ratings
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
V
I
T
T
V
IN
OUT
EN
OUT
P
D
STG
OP
DC input voltage - 0.3 to 6 V
DC output voltage - 0.3 to VI + 0.3 V
Enable input voltage - 0.3 to VI + 0.3 V
Output current Internally limited mA
Power dissipation Internally limited mW
Storage temperature range -65 to 150 °C
Operating junction temperature range -40 to 125 °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 4. Thermal data
Symbol Parameter Value Unit
R
thJA
Thermal resistance junction-ambient 180 °C/W
6/17 Doc ID 15968 Rev 2
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