This is information on a product in full production.
July 2017 DocID17488 Rev 5 1/18
LD59015
150 mA low noise high PSRR linear voltage regulator
Datasheet
-
production data
Features
•Input voltage from 2.4 to 5.5 V
•Very low quiescent current (31 µA typ. at no-
load, 75 µA typ. at 150 mA load, 1 µA max. in
OFF mode)
•Very low noise (20 µV
RMS
at V
OUT
= 1.5 V)
•Output voltage tolerance: ± 1.8% at 25 °C
•150 mA guaranteed output current
•Wide range of output voltages available on
request: 1.2 V to 3.3 V in 100 mV steps
•Logic-controlled electronic shutdown
•Compatible with ceramic capacitors
•Very high PSRR (80 dB @ 100 Hz, 76 @
10 kHz, 54 @ 100 kHz)
•Internal current and thermal limit
•Package: SOT323-5L
•Temperature range: -40 °C to 125 °C
Description
The LD59015 provides 150 mA maximum current
with an input voltage range from 2.4 V to 5.5 V,
and a typical dropout voltage of 150 mV. It is
stable with ceramic capacitors. High PSRR, low
quiescent current and low noise features make it
suitable for low power battery-powered
applications. Power supply rejection is 80 dB at
low frequency and starts to roll off at 10 kHz. The
enable logic control function puts the LD59015 in
shutdown mode, allowing a total current
consumption lower than 1 µA. The device also
includes short-circuit constant current limiting and
thermal pr otecti on. Typical applic ati ons are
mobile phones, personal digital assistants
(PDAs), cordless phones and similar battery-
powered systems.
SOT323-5L
Table 1. Device summary
Order code Output voltages
LD59015C12R 1.2 V
LD59015C15R 1.5 V
LD59015C18R 1.8 V
LD59015C25R 2.5 V
LD59015C30R 3.0 V
LD59015C33R 3.3 V
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Contents LD59015
2/18 DocID17488 Rev 5
Contents
1 Block 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 information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.1 SOT323-5L p a ckage information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.2 SOT323-5L p a cking infor m ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DocID17488 Rev 5 3/18
LD59015 Block di agram
18
1 Block diagram
Figure 1. LD59015 block diagram
Trimming
0.8 V
BandGap
Enable
EN GND
OUT
IN
Protection
Thermal R2
R1
Trimming
0.8 V
BandGap
Enable
EN GND
OUT
IN
Protection
Thermal R2
R1
Pin configuration LD59015
4/18 DocID17488 Rev 5
2 Pin configuration
Figure 2. Pin connection (top view)
Table 2.
Pin description
Pin Symbol Function
1 IN Input voltage
2 GND Ground
3EN
Enable input
Set V
EN
> 0.9 to turn on the device
Set V
EN
< 0.4 to turn off the device
4 N.C. Not connected
5 OUT Output voltage
DocID17488 Rev 5 5/18
LD59015 Typical application
18
3 Typical application
Figure 3. Typic al application circuit
1 µF
IN
EN
V
EN
V
IN
OUT
Load
GND
1 µF
V
OUT
1 µF
IN
EN
V
EN
V
IN
OUT
Load
GND
1 µF
V
OUT
Maximum ratings LD59015
6/18 DocID17488 Rev 5
4 Maximum ratings
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. Absolute maximum ratings
Symbol Parameter Value Unit
V
IN
DC input voltage - 0.3 to 7 V
V
OUT
DC output voltage - 0.3 to V
I
+ 0.3 (max. 7) V
V
EN
Enable input voltage - 0.3 to V
I
+ 0.3 (max. 7) V
I
OUT
Output current Internally limited mA
P
D
Power dissipation Internally limited mW
ESD Human bod y mod el ±
3kV
Machine model ± 300 V
T
STG
Storage temperature range -65 to 150 °C
T
OP
Operating junction temperature range -40 to 125 °C
Table 4. Thermal data
Symbol Parameter Value Unit
R
thJA
Thermal resistance junction-ambient 645.69 °C/W
R
thJC
Thermal resistance junction-case 116 °C/W
DocID17488 Rev 5 7/18
LD59015 Electri cal chara ct er ist ics
18
5 Electrical characteristics
T
J
= 2 5 °C, V
IN
= V
OUT(NOM)
+ 1 V, C
IN
= C
OUT
= 1 µF, I
OUT
= 1 mA, V
EN
= V
IN
, unles s
otherwise specified.
Table 5. Electrical characteristics
(1)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
IN
Operating input voltage 2.4 5.5
V
V
UVLO
Turn-on threshold 2.0 2.15
Turn-of f thres ho ld 1.90 1.95
V
OUT
V
OUT
accuracy I
OUT
= 1 m A, -40 °C < T
J
< 125 °C -1.8 1.8 %
ΔV
OUT
Static line regulation V
OUT
+1 V ≤ V
IN
≤ 5.5 V, I
OUT
= 1
mA 0.001 %/V
ΔV
OUT
Static load regulation I
OUT
= 1 mA to 150 mA 0.001 %/mA
V
DROP
Dropout voltage
(2)
I
OUT
= 150 mA, V
OUT
> 2.2 V
-40 °C < T
J
< 125 °C 150 210 mV
e
N
Output noise voltage 10 Hz to 100 kHz, I
OUT
= 10 mA,
V
OUT
= 1.5 V 20 µV
RMS
/V
OUT
SVR Supply volta ge reje cti on
V
OUT
= 1.5 V
V
IN
= V
OUTNOM
+ 1 V +/-V
RIPPLE
V
RIPPLE
= 0.5 V, frequency = 1 kHz
I
OUT
= 1 mA 76
dB
V
IN
= V
OUTNOM
+ 1 V +/-V
RIPPLE
V
RIPPLE
= 0.5 V,
frequency =10 kHz
I
OUT
= 1 mA
76
V
IN
= V
OUTNOM
+ 1 V +/-V
RIPPLE
V
RIPPLE
= 0.5 V,
frequency =100 kHz
I
OUT
= 1 mA
54
I
Q
Quiescent current
I
OUT
= 0 mA 31
µA
I
OUT
= 0 m A, -40 °C < T
J
< 125 °C 60
I
OUT
= 0 to 150 mA 75
I
OUT
= 0 to 150 mA
-40 °C < T
J
< 125 °C 110
V
IN
input current in OFF mode:
V
EN
= GND 0.001 1
I
SC
Short-circuit current R
L
= 0 200 mA
V
EN
Enable input logic low V
IN
= 2.4 V to 5.5 V,
-40 °C < T
J
< 85 °C 0.4 V
Enable in put logic high V
IN
= 2.4 V to 5.5 V,
-40 °C < T
J
< 85 °C 0.9 V
Ele ctrical characteristics LD59015
8/18 DocID17488 Rev 5
Note: All transient values are guaranteed by design, not tested in production.
I
EN
Enable pin input current V
SHDN
= 5.5V 0.1 100 nA
T
ON
Turn-on time
(3)
200 µs
T
SHDN
Thermal shutdown 160 °C
Hysteresis 20
C
OUT
Output capacitor Capacitance (see Section 6)1 4.7µF
1. For V
OUT(NOM)
< 1.3 V, V
IN
= 2.4 V.
2. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This
specification does not apply to output voltages below 1.7 V.
3. Turn-on time is time measured between the enable input just exceeding V
EN
high value and the output voltage just
reaching 95% of its nominal value.
Table 5. Electrical characteristics (continued)
(1)
Symbol Parameter Test conditions Min. Typ. Max. Unit
DocID17488 Rev 5 9/18
LD59015 Typical performance characteristics
18
6 Typical performance characteristics
C
IN
= C
OUT
= 1 µF
Figure 4. V
OUT
vs. temperature (V
OUT
= 0.8 V) Figure 5. V
OUT
vs. temperature (V
OUT
= 3.3 V)
Figure 6. Quiescent current vs. temperature Figure 7. Quiescent current vs. I
OUT
Figure 8. V
OUT
vs. V
IN
Figure 9. V
DROP
vs. I
OUT
V
IN
= V
EN
= 4.3 V, I
OUT
= 1 mA, V
OUT
= 3.3 V
3.22
3.24
3.26
3.28
3.3
3.32
3.34
3.36
3.38
-75 -50 -25 0 25 50 75 100 125 150
T [°C]
V
OUT
[V]
V
IN
= V
EN
= 4.3 V, I
OUT
= 1 mA, V
OUT
= 3.3 V
3.22
3.24
3.26
3.28
3.3
3.32
3.34
3.36
3.38
-75 -50 -25 0 25 50 75 100 125 150
T [°C]
V
OUT
[V]
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20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
100.00
0 20 40 60 80 100 120 140 160
IOUT [mA]
Iq [uA]
-40°C 125°C 25°C
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
100.00
0 20 40 60 80 100 120 140 160
IOUT [mA]
Iq [uA]
-40°C 125°C 25°C
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
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V
IN
[V]
V
OUT
[V]
150 ºC
125 ºC
85 ºC
55 ºC
25 ºC
0 ºC
-25 ºC
-40 ºC
-55 ºC
V
IN
= V
EN
= from 0 to 5.5 V, I
OUT
= 150 mA,
V
OUT
= 8 V
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
00.511.522.533.544.555.56
V
IN
[V]
V
OUT
[V]
150 ºC
125 ºC
85 ºC
55 ºC
25 ºC
0 ºC
-25 ºC
-40 ºC
-55 ºC
V
IN
= V
EN
= from 0 to 5.5 V, I
OUT
= 150 mA,
V
OUT
= 8 V
V
IN
= V
EN
, I
OUT
= from 0 to 150 mA, V
OUT
= 3.3 V
0
50
100
150
200
250
0 25 50 75 100 125 150 175
I
OUT
[mA]
Vdrop [mV]
125 ºC
-40 ºC
25 ºC
V
IN
= V
EN
, I
OUT
= from 0 to 150 mA, V
OUT
= 3.3 V
0
50
100
150
200
250
0 25 50 75 100 125 150 175
I
OUT
[mA]
Vdrop [mV]
125 ºC
-40 ºC
25 ºC
Typical performance characteristics LD59015
10/18 DocID17488 Rev 5
Figure 10. V
UVLO
vs. temperature Figure 11. ESR vs. C
OUT
Figure 12. Supply voltage rejection vs.
frequency Figure 13. Supply voltage rejection vs. I
OUT
Figure 14. I
SC
vs. V
DROP
Figure 15. Line transient (V
OUT
= 0.8 V)
C
OUT
= 1 µF; V
IN
= V
EN
= from 2.4 to 3.3 V;
V
OUT
= 0.8 V; I
OUT
= 1 mA; t
rise
= t
fall
= 25 µs
40
50
60
70
80
90
100
100 1000 10000 100000
Supply Voltage rejection [dB]
f [Hz]
V
IN
= 4.8 V, Vripple pk-pk = 1 V, V
O
= 3.3 V
40
50
60
70
80
90
0 20 40 60 80 100 120 140 160
I
OUT
[mA]
Supply voltage rejection [db]
1 kHz
100 Hz
10 kHz
V
IN
= 4.8 V, Vripple pk-pk = 1 V, V
O
= 3.3 V
40
50
60
70
80
90
0 20 40 60 80 100 120 140 160
I
OUT
[mA]
Supply voltage rejection [db]
1 kHz
100 Hz
10 kHz
V
IN
= V
EN
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0123456
Vdrop [V]
I
SC
[A]
125 ºC
-40 ºC
25 ºC
V
IN
= V
EN
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0123456
Vdrop [V]
I
SC
[A]
125 ºC
-40 ºC
25 ºC
DocID17488 Rev 5 11/18
LD59015 Typical performance characteristics
18
Figure 16. Line trans ien t (V
OUT
= 3.3 V)
C
OUT
= 1 µF; V
IN
= V
EN
= from 4.5 to 5.5 V; V
OUT
=
3.3 V; I
OUT
= 1 mA; t
rise
= t
fall
= 25 µs
Figure 17. Load transient (V
OUT
= 0.8 V)
C
IN
= C
OUT
= 1 µF; V
IN
= V
EN
= 2.4 V; V
OUT
= 0.8 V;
I
OUT
from 0.1 to 150 mA; t
rise
= t
fall
= 25 µs
Figure 18. Load transient (V
OUT
= 3.3 V)
C
IN
= C
OUT
= 1 µF; V
IN
= V
EN
= 4.3 V ; V
OUT
= 3.3 V ;
I
OUT
from 0.1 to 150 mA; t
rise
= t
fall
= 25 µs
Figure 19. Start-up transient
C
OUT
= 1 µF; V
IN
= V
EN
= from 0 to 5.5 V; V
OUT
=
3.3 V; I
OUT
= 150 mA
Typical performance characteristics LD59015
12/18 DocID17488 Rev 5
Fig ure 20. Enable transient
C
IN
= C
OUT
= 1 µF; V
IN
= 4.3; V
EN
= from 0 to 5.5 V;
V
OUT
= 3.3 V; I
OUT
= 1 mA; t
rise
= 25 µs
DocID17488 Rev 5 13/18
LD59015 Package information
18
7 Package information
In orde r to meet en vironmental requi rements, ST offers these devices in different grades of
ECOPACK
®
packages, dependi ng on their level of environmental com pliance. ECOPACK
®
specifications, grade definitions and product status are available at:
www.st.com
.
ECOPACK
®
is an ST trademark.
7.1 SOT323-5L package information
Figure 21. SOT323-5L package outline
7091413_E
Package information LD59015
14/18 DocID17488 Rev 5
Table 6. SOT323-5L package mechanical data
Dim. mm
Min. Typ. Max.
A 0.80 1.10
A1 0 0.10
A2 0.80 0.90 1
b 0.15 0.30
c 0.10 0.22
D1.8022.20
E 1.80 2.10 2.40
E1 1.15 1.25 1.35
e0.65
e1 1.30
L 0.26 0.36 0.46
<0° 8°
DocID17488 Rev 5 15/18
LD59015 Package information
18
7.2 SOT323-5L packing information
Figure 22. SOT323-5L tape and reel outline
Package information LD59015
16/18 DocID17488 Rev 5
Table 7. SOT323-5L t ape and reel mechanical dat a
Dim. mm
Min. Typ. Max.
A 175 180 185
C12.81313.2
D20.2
N59.56060.5
T14.4
Ao 2.25
Bo 3.17
Ko 1.2
Po 3.9 4.0 4.1
P 3.9 4.0 4.2
DocID17488 Rev 5 17/18
LD59015 Revision history
18
8 Revision history
Table 8. Document rev ision history
Date Revision Changes
10-May-2010 1 Initial release.
21-Dec-2011 2 Modified: operating input voltage (V
IN
) min. value Table 5 on page 7.
Availability LD59015C08R code Table 1 on page 1.
06-Jul-2012 3 Updated: Table 1 on page 1.
24-Apr-2014 4
Part number LD59015xx changed to LD59015.
Updated the description in cover page and Section 7: Package mechanical
data.
Added Section 8: Packaging mechanical data.
Minor text changes.
05-Jul-2017 5 Updated features and Table 1: Device summary.
Minor text changes.
LD59015
18/18 DocID17488 Rev 5
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