This is information on a product in full production.
July 2015 DocID14003 Rev 5 1/15
LD39015
150 mA low quiescent current and low noise voltage regulator
Datasheet
-
production data
Features
Input voltage from 1.5 to 5.5 V
Ultra low-dropout voltage (80 mV typ. at 100
mA load)
Very low quiescent current (18 µA typ. at no
load, 38 µA typ. at 150 mA load, 1 µA max. in
OFF mode)
Very low noise without bypass capacitor
(29 µV
RMS
at V
OUT
= 0.8 V)
Output voltage tolerance: ± 2.0% @ 25 °C
150 mA guaranteed output current
Wide range of output voltages available on
request: 0.8 V to 3.3 V with 100 mV step
Logic-controlled electronic shutdown
Compatible with ceramic capacitors C
O
= 1 µF
Internal current and thermal limit
Temperature range: -40 °C to 125 °C
Description
The LD39015 series provides 150 mA maximum
current with an input voltage range from 1.5 V to
5.5 V and a typical dropout voltage of 80 mV. It is
stable with ceramic capacitors. The ultra low drop
voltage, low quies ce nt cur rent and low noise
features make it suitable for low power battery-
powered applications. Power supply rejection is
65 dB at low frequencies and starts rolling off at
10 kHz. Enable logic control function puts the
LD39015 in shutdown mode allowing a total
current consumption lower than 1 µA. The device
also includes short-circuit constant current limiting
and thermal protection. Typical applications are
mobile phones, personal digital assistants
(PDAs), cordless phones or similar battery-
powered systems.
SOT23-5L
Table 1. Device summary
Order codes Output voltages
LD39015M08R 0.8 V
LD39015M10R 1.0 V
LD39015M12R 1.2 V
LD39015M125R 1.25 V
LD39015M15R 1.5 V
LD39015M18R 1.8 V
LD39015M25R 2.5 V
LD39015M33R 3.3 V
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Contents LD39015
2/15 DocID14003 Rev 5
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 information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1 SOT23-5L p a ckage informat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
7.2 SOT23-5L p a cking infor m ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DocID14003 Rev 5 3/15
LD39015 Diagram
15
1 Diagram
Figure 1. Block diagram
Trimming
1.22 V
BandGap
Enable
EN GND
OUT
IN
Protection
Thermal R2
R1
Trimming
1.22 V
BandGap
Enable
EN GND
OUT
IN
Protection
Thermal R2
R1
Pin configuration LD39015
4/15 DocID14003 Rev 5
2 Pin configuration
Figure 2. Pin connec tion (top view)
SOT23-5L
Table 2.
Pin description
Pin n° Symbol Function
1 IN LDO input voltage
2 GND Common ground
3 EN Enable pin logic input: low = shutdown, high = active
4 NC Not connected
5 OUT Output voltage
DocID14003 Rev 5 5/15
LD39015 Typical application
15
3 Typical application
Figure 3. Typical application circuit
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Maximum ratings LD39015
6/15 DocID14003 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 V
V
EN
Enable input voltage - 0.3 to V
I
+ 0.3 V
I
OUT
Output current Internally limited mA
P
D
Power dissipation Internally limited mW
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 SOT23-5L Unit
R
thJA
Thermal resistance junction-ambient 255 °C/W
R
thJC
Thermal resistance junction-case 81 °C/W
DocID14003 Rev 5 7/15
LD39015 Electri cal chara ct er ist ics
15
5 Electrical characteristics
T
J
= 25 °C, V
IN
= V
OUT(NOM)
+ 1 V, C
IN
= C
OUT
= 1 µF, I
OUT
= 1 mA, V
EN
= V
IN
, unless
otherwise specified.
Table 5. Electrical characteristics
(1)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
IN
Operating input voltage 1.5 5.5 V
V
UVLO
Turn-on threshold 1.45 1.48 V
Turn-off threshold 1.30 1.35 mV
V
OUT
V
OUT
accuracy
V
OUT
> 1.5 V, I
OUT
= 1 mA
T
J
= 25 °C -2.0 2.0 %
V
OUT
> 1.5 V, I
OUT
= 1 mA
-40 °C < T
J
< 125 °C -3.0 3.0
V
OUT
1.5 V, I
OUT
= 1 mA ±10 mV
V
OUT
1.5 V, I
OUT
= 1 mA
-40 °C < T
J
< 125 °C ±30
ΔV
OUT
Static line regulation V
OUT
+1 V V
IN
5.5 V
I
OUT
= 1 mA 0.01 %/V
ΔV
OUT
Transient line regulation
(2)
ΔV
IN
= + 500 mV, I
OUT
= 1 mA
T
R
= T
F
= 5 µs 10 mVpp
ΔV
OUT
Static load regulation I
OUT
= 1 mA to 150 mA 0.002 %/mA
ΔV
OUT
Transient load regulation
(2)
I
OUT
= 1 mA to 150 mA
T
R
= T
F
= 5 µs 40 mVpp
V
DROP
Dropout voltage
(3)
I
OUT
= 100 mA, V
OUT
> 1.5 V
-40 °C < T
J
< 125 °C 80 100 mV
e
N
Output noise voltage 1.1 kHz to 100 kHz, I
OUT
= 10 mA
V
OUT
= 0.8 V 29 µV
RMS
SVR Supply volta ge reje cti on
V
OUT
= 1.5 V
V
IN
= V
OUTNOM
+ 0.5 V +/-V
RIPPLE
V
RIPPLE
= 0.1 V, freq. = 1 kHz
I
OUT
= 10 mA 65
dB
V
IN
= V
OUTNOM
+ 0.5 V +/-V
RIPPLE
V
RIPPLE
= 0.1 V, freq.=10 kHz
I
OUT
= 10 mA 62
I
Q
Quiescent current
I
OUT
= 0 mA 18
µA
I
OUT
= 0 m A, -40 °C < T
J
< 125 °C 50
I
OUT
= 0 to 150 mA 38
I
OUT
= 0 to 150 mA
-40 °C < T
J
< 125 °C 70
V
IN
input current in OFF mode:
V
EN
= GND 0.001 1
Ele ctrical characteristics LD39015
8/15 DocID14003 Rev 5
I
SC
Short-circuit current R
L
= 0 350 mA
V
EN
Enable input logic low V
IN
= 1.5 V to 5.5 V
-40 °C < T
J
< 125 °C 0.4 V
Enable in put logic high V
IN
= 1.5 V to 5.5 V
-40 °C < T
J
< 125 °C 0.9 V
I
EN
Enable pin input current V
EN
= V
IN
0.1 100 nA
T
ON
Turn-on time
(4)
30 µs
T
SHDN
Thermal shutdown 160 °C
Hysteresis 20
C
OUT
Output capacitor Capacitance (s ee typical
performan ce cha rac teri st ics for
stability) 122µF
1. For V
OUT(NOM)
< 1.2 V, V
IN
= 1.5 V
2. All transient values are guaranteed by design, not production tested
3. 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 1.5 V
4. Turn-on time is the 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
DocID14003 Rev 5 9/15
LD39015 Typical performance characteristics
15
6 Typical performan ce characteristic s
Figure 4. Output voltage vs. temperature Figure 5. Output voltage vs. input voltage
Figure 6. Dropout voltage vs. output current Figure 7. C
OUT
stability region
Figure 8. Supply voltage rejection vs. frequency Figure 9. Output noise voltage vs. frequency
V
IN
=1.5V
0.75
0.76
0.77
0.78
0.79
0.8
0.81
0.82
0.83
0.84
0.85
-50 0 50 100 150
Temp [°C]
V
OUT
[V]
I
OUT
=1mA
I
OUT
=100mA
V
IN
=1.5V
0.75
0.76
0.77
0.78
0.79
0.8
0.81
0.82
0.83
0.84
0.85
-50 0 50 100 150
Temp [°C]
V
OUT
[V]
I
OUT
=1mA
I
OUT
=100mA
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0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0 0.05 0.1 0.15 0.2 0.25
I
OUT
[A]
Vdropout [V]
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0 0.05 0.1 0.15 0.2 0.25
I
OUT
[A]
Vdropout [V]
STABILITY REGION
C
IN
=1 µF, V
IN
=V
EN
=1 .5 to 5 .5 V I
OUT
=1 mA to 0.15 A
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
0 5 10 15 20 25
C
OUT
F] (nominal value)
ESR @ 100 KHz [Ohm]
STABILITY REGION
C
IN
=1 µF, V
IN
=V
EN
=1 .5 to 5 .5 V I
OUT
=1 mA to 0.15 A
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
0 5 10 15 20 25
C
OUT
F] (nominal value)
ESR @ 100 KHz [Ohm]
I
OUT
=10 mA, V
IN
=4.3 V, C
IN
=C
OUT
= 1µF
V
OUT
=3.3 V
0
100
200
300
400
500
600
700
800
1000 10000 100000
FREQ [Hz]
nV/
Hz
I
OUT
=10 mA, V
IN
=4.3 V, C
IN
=C
OUT
= 1µF
V
OUT
=3.3 V
0
100
200
300
400
500
600
700
800
1000 10000 100000
FREQ [Hz]
nV/
Hz
Typical performance characteristics LD39015
10/15 DocID14003 Rev 5
Figure 10. Quiescent current vs. input voltage Figure 11. Load transient
V
EN
= V
IN
= 1.5V, I
OUT
= 1mA to 0.15A, C
IN
= C
OUT
= 1µF,
t
r
= t
f
= 5µs
Figure 12. Line transient
V
IN
= V
EN
= 1.5 to 5.5V, I
OUT
= 1mA, C
OUT
= 1µF,
t
r
= t
f
= 5µs
Figure 13. Enable transient
V
IN
= 1.5V, V
EN
= 0 to 1V, I
OUT
= 1mA, C
IN
= C
OUT
= 1µF
0
20
40
60
80
100
1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 5.9
V
IN
[V]
Iq [µA]
V
IN
=V
INH
, C
IN
=C
OUT
=1µ F , I
OUT
=0.15A
0
20
40
60
80
100
1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 5.9
V
IN
[V]
Iq [µA]
V
IN
=V
INH
, C
IN
=C
OUT
=1µ F , I
OUT
=0.15A
DocID14003 Rev 5 11/15
LD39015 Package information
15
7 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
®
specifications, grade definitions and product status are available at: www.st.com.
ECOPAC K is an ST trademark.
7.1 SOT23-5L package information
Figure 14. SOT23-5L package outline
BN
Package information LD39015
12/15 DocID14003 Rev 5
Figure 15. SOT23-5L recommended footprint (dimensions in mm)
Table 6. SOT23-5L mechanical data
Dim. mm
Min. Typ. Max.
A0.90 1.45
A1 0 0.15
A2 0.90 1.30
b0.30 0.50
c0.09 0.20
D2.95
E1.60
e0.95
H2.80
L0.30 0.60
q0 8
BN
DocID14003 Rev 5 13/15
LD39015 Package information
15
7.2 SOT23-5L packing information
Figure 16. SOT23-5L tape and reel outline
Table 7. SOT23-5L tape and reel mechanical data
Dim. mm
Min. Typ. Max.
A180
C 12.8 13.0 13.2
D20.2
N60
T14.4
Ao 3.13 3.23 3.33
Bo 3.07 3.17 3.27
Ko 1.27 1.37 1.47
Po 3.9 4.0 4.1
P 3.9 4.0 4.1
Revision history LD39015
14/15 DocID14003 Rev 5
8 Revision history
Table 8. Document revision history
Date Revision Changes
13-N ov-2007 1 Initial release.
11-Apr-2008 2 Modified:
Table 5 on page 7
.
12-Feb-2009 3 Modified:
Table 1 on page 1
.
11-Feb-2014 4
Part number LD39015xx changed to LD39015.
Updated the
Description
in cover page and
Section 7: Package information
.
Added
Section 7.2: SOT23-5L packing information
.
Minor text changes.
07-Jul-2015 5
Remo ved SOT 666 package.
Updated feat ures in cover page,
Ta b le 1: De vi ce summ ary
,
Table 2: Pin
description
,
Table 4: Th ermal data
,
Figure 2: Pin connecti on (top view)
and
Section 7: Package information
.
Minor text changes.
DocID14003 Rev 5 15/15
LD39015
15
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