This is information on a product in full production.
February 2014 DocID14003 Rev 4 1/16
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
Available in SOT666 and SOT23-5L packages
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.
SOT666 SOT23-5L
Table 1. Device summary
Order codes Output voltages
SOT666 SOT23-5L
LD39015XG08R LD39015M08R 0.8 V
LD39015XG10R LD39015M10R 1.0 V
LD39015XG12R
(1)
LD39015M12R 1.2 V
LD39015M125R 1.25 V
LD39015XG15R LD39015M15R 1.5 V
LD39015XG18R
(1)
LD39015M18R 1.8 V
LD39015XG25R
(1)
LD39015M25R 2.5 V
LD39015XG33R
(1)
LD39015M33R 3.3 V
1. Available on request. Other voltages available on request from 0.8 V to 3.3 V in 100 mV step.
www.st.com
Contents LD39015
2/16 DocI D14003 Rev 4
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 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DocID14003 Rev 4 3/16
LD39015 Diagram
16
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
4/16 DocI D14003 Rev 4
2 Pin configuration
Figure 2. Pin connection (top view)
SOT23-5L
SOT666
Table 2.
Pin description
Pin n° Symbol Function
SOT666 SOT23-5L
1 3 EN Enable pin logic input: low = shutdown, high = active
2 2 GND Common ground
3 1 IN LDO input voltage
4 5 OUT Output voltage
5 4 NC Not connected
6 NC Not connected
DocID14003 Rev 4 5/16
LD39015 Typical application
16
3 Typical application
Figure 3. Typical 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 LD39015
6/16 DocI D14003 Rev 4
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 SOT666 Unit
R
thJA
Thermal resistance junction-ambient 255 132 °C/W
R
thJC
Thermal res istance junction-case 81 56 °C/W
DocID14003 Rev 4 7/16
LD39015 Electri cal chara ct er ist ics
16
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-o f f thres hold 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
8/16 DocI D14003 Rev 4
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 4 9/16
LD39015 Typical performance characteristics
16
6 Typical performance characteristics
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
CIN=1 µF, VIN=VEN=1.5 to 5 .5 V IOUT=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
CIN=1 µF, VIN=VEN=1.5 to 5 .5 V IOUT=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
10/16 DocID14003 Rev 4
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 Figure 13. Enable transient
V
IN
= V
EN
= 1.5 to 5.5V, I
OUT
= 1mA, C
OUT
= 1µF,
t
r
= t
f
= 5µs
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 4 11/16
LD39015 Package mechanical data
16
7 Package mechanical data
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.
Figure 14. SOT23-5L mechanical drawings
BN
Package mechanical data LD39015
12/16 DocID14003 Rev 4
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
θ
08
BN
DocID14003 Rev 4 13/16
LD39015 Package mechanical data
16
Figure 16. SOT666 mechanical drawings
Table 7. SOT666 mechanical data
Dim. mm
Min. Typ. Max.
A 0.53 0.57 0.60
A3 0.13 0.17 0.18
D 1.50 1.66 1.70
E 1.50 1.65 1.70
E1 1.10 1.20 1.30
L1 0.11 0.19 0.26
L2 0.10 0.23 0.30
L3 0.05 0.10
b0.17 0.25
b1 0.27 0.34
e0.50
e1 0.20
θ
10° 12°
Packagi ng mechan ic al data LD39015
14/16 DocID14003 Rev 4
8 Packaging mechanical data
Figure 17.Tape and reel SOT23-5L drawings
Table 8. Tape and reel SOT23-5L 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
DocID14003 Rev 4 15/16
LD39015 Revision history
16
9 Revision history
Table 9. 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: P ackage me chanical
data
.
Added
Section 8: Packaging mechanical data
.
Minor text changes.
LD39015
16/16 DocID14003 Rev 4
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