This is information on a product in full production.
July 2012 Doc ID 17488 Rev 3 1/16
16
LD59015xx
150 mA low noise high PSRR linear voltage regulator
Datasheet − production data
Features
■Input voltage from 2.3 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 µVRMS at VOUT = 1.5 V)
■Output voltage tolerance: ± 1.8% at 25 °C
■150 mA guaranteed output current
■Wide range of output voltages available on
request: 0.8 V to 3.3 V in 100 mV steps
■Logic-controlled electronic shutdown
■Compatible with ceramic capacitor
(COUT = 1 µF)
■Internal current and thermal limit
■Package: SOT323-5L
■Temperature range: -40 °C to 125 °C
Description
The LD59015xx provides 150 mA of maximum
current from an input voltage ranging from 2.3 V
to 5.5 V, with 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 frequencies and starts to roll off at 10 kHz. An
enable logic control function puts the LD59015xx
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 and similar battery-
powered systems.
SOT323-5L
Table 1. Device summary
Part numbers Order codes Output voltages
LD59015XX08 LD59015C08R 0.8 V
LD59015XX12 LD59015C12R 1.2 V
LD59015XX15 LD59015C15R 1.5 V
LD59015XX18 LD59015C18R 1.8 V
LD59015XX25 LD59015C25R 2.5 V
LD59015XX30 LD59015C30R 3.0 V
LD59015XX33 LD59015C33R 3.3 V
www.st.com
Contents LD59015xx
2/16 Doc ID 17488 Rev 3
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 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LD59015xx Block diagram
Doc ID 17488 Rev 3 3/16
1 Block diagram
Figure 1. LD59015xx 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 LD59015xx
4/16 Doc ID 17488 Rev 3
2 Pin configuration
Figure 2. Pin connection (top view)
Table 2. Pin description
Pin n° Symbol Function
1 IN Input voltage
2 GND Ground
3EN
Enable input.
Set VEN > 0.9 to turn on the device
Set VEN < 0.4 to turn off the device
4 NC Not connected
5 OUT Output voltage
LD59015xx Typical application
Doc ID 17488 Rev 3 5/16
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 LD59015xx
6/16 Doc ID 17488 Rev 3
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
VIN DC input voltage - 0.3 to 7 V
VOUT DC output voltage - 0.3 to VI + 0.3 (max. 7) V
VEN Enable input voltage - 0.3 to VI + 0.3 (max. 7) V
IOUT Output current Internally limited mA
PDPower dissipation Internally limited mW
ESD Human body model ± 3kV
Machine model ± 300 V
TSTG Storage temperature range -65 to 150 °C
TOP Operating junction temperature range -40 to 125 °C
Table 4. Thermal data
Symbol Parameter Value Unit
RthJA Thermal resistance junction-ambient 645.69 °C/W
RthJC Thermal resistance junction-case 116 °C/W
LD59015xx Electrical characteristics
Doc ID 17488 Rev 3 7/16
5 Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless
otherwise specified.
Table 5. Electrical characteristics (1)
Symbol Parameter Test conditions Min. Typ. Max. Unit
VIN Operating input voltage 2.4 5.5
V
VUVLO
Turn-on threshold 2.0 2.15
Turn-off threshold 1.90 1.95
VOUT VOUT accuracy IOUT = 1mA, -40°C < TJ < 125°C -1.8 1.8 %
ΔVOUT Static line regulation VOUT +1V ≤ VIN ≤ 5.5V, IOUT = 1mA 0.001 %/V
ΔVOUT Static load regulation IOUT = 1mA to 150mA 0.001 %/mA
VDROP Dropout voltage (2) IOUT = 150mA, VOUT > 2.2V
-40°C < TJ < 125°C 150 210 mV
eNOutput noise voltage 10Hz to 100kHz, IOUT = 10mA,
VOUT = 1.5V 20 µVRMS
/VOUT
SVR Supply voltage rejection
VOUT = 1.5V
VIN = VOUTNOM + 1V +/-VRIPPLE
VRIPPLE = 0.5V, freq. = 1kHz
IOUT = 1mA
76
dB
VIN = VOUTNOM + 1V +/-VRIPPLE
VRIPPLE = 0.5V, freq.=10kHz
IOUT = 1mA
76
VIN = VOUTNOM + 1V +/-VRIPPLE
VRIPPLE = 0.5V, freq.=100kHz
IOUT = 1mA
54
IQQuiescent current
IOUT = 0mA 31
µA
IOUT = 0mA, -40°C < TJ < 125°C 60
IOUT = 0 to 150mA 75
IOUT = 0 to 150mA
-40°C < TJ< 125°C 110
VIN input current in OFF MODE:
VEN = GND 0.001 1
ISC Short-circuit current RL = 0 200 mA
VEN
Enable input logic low VIN = 2.3V to 5.5V,
-40°C < TJ < 85°C 0.4 V
Enable input logic high VIN = 2.3V to 5.5V,
-40°C < TJ < 85°C 0.9 V
IEN Enable pin input current VSHDN = 5.5V 0.1 100 nA
TON Turn-on time (3) 200 µs
Electrical characteristics LD59015xx
8/16 Doc ID 17488 Rev 3
Note: All transient values are guaranteed by design, not production tested.
TSHDN
Thermal shutdown 160 °C
Hysteresis 20
COUT Output capacitor
Capacitance (see typical
performance characteristics for
stability)
14.7µF
1. For VOUT(NOM) < 1.3 V, VIN = 2.3 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 for output voltages below 1.7 V.
3. Turn-on time is time measured between the enable input just exceeding the VEN 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
LD59015xx Typical performance characteristics
Doc ID 17488 Rev 3 9/16
6 Typical performance characteristics
CIN = COUT = 1 µF
Figure 4. VOUT vs. temperature (VOUT = 0.8 V) Figure 5. VOUT vs. temperature (VOUT = 3.3 V)
Figure 6. Quiescent current vs. temperature Figure 7. Quiescent current vs. IOUT
Figure 8. VOUT vs. VIN Figure 9. Vdrop vs. IOUT
V
IN
= V
EN
= 2.3 V, I
OUT
= 1 mA, V
OUT
= 0.8 V
0.78
0.785
0.79
0.795
0.8
0.805
0.81
0.815
0.82
-75 -50 -25 0 25 50 75 100 125 150
T [°C]
VOUT [V]
V
IN
= V
EN
= 2.3 V, I
OUT
= 1 mA, V
OUT
= 0.8 V
0.78
0.785
0.79
0.795
0.8
0.805
0.81
0.815
0.82
-75 -50 -25 0 25 50 75 100 125 150
T [°C]
VOUT [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]
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]
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
-40 -20 0 20 40 60 80 100 120 140
Temperature [°C]
Iq [µA]
V
IN
=1.5 V, V
O
= 0.8 V
V
IN
= 4.3 V, V
O
= 3.3 V
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
-40 -20 0 20 40 60 80 100 120 140
Temperature [°C]
Iq [µA]
V
IN
=1.5 V, V
O
= 0.8 V
V
IN
= 4.3 V, V
O
= 3.3 V
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
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
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
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 LD59015xx
10/16 Doc ID 17488 Rev 3
Figure 10. VUVLO vs. temperature Figure 11. ESR vs. COUT
Figure 12. Supply voltage regulation vs.
frequency
Figure 13. Supply voltage regulation vs. IOUT
Figure 14. ISC vs. VDROP Figure 15. Line transient
COUT = 1 µF; VIN = VEN = from 2.3 to 3.3 V; VOUT = 0.8 V;
IOUT = 1 mA; trise = tfall = 25 µs
1.50
1.70
1.90
2.10
2.30
2.50
-40 -20 0 20 40 60 80 100 120 140
Temperature [°C]
UVLO Thresholds [V]
turn-off
turn on
1.50
1.70
1.90
2.10
2.30
2.50
-40 -20 0 20 40 60 80 100 120 140
Temperature [°C]
UVLO Thresholds [V]
turn-off
turn on
0.00
0.01
0.10
1.00
10.00
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
C
OUT
[µF]
ESR at 100 kHz [Ohm]
ESR MAX
ESR MIN
0.00
0.01
0.10
1.00
10.00
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
C
OUT
[µF]
ESR at 100 kHz [Ohm]
ESR MAX
ESR MIN
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
LD59015xx Typical performance characteristics
Doc ID 17488 Rev 3 11/16
Figure 16. Line transient Figure 17. Load transient
COUT = 1 µF; VIN = VEN = from 4.5 to 5.5 V; VOUT = 3.3 V;
IOUT = 1 mA; trise = tfall = 25 µs
CIN = COUT = 1 µF; VIN = VEN = 2.3 V; VOUT = 0.8 V;
IOUT from 0.1 to 150 mA; trise = tfall = 25 µs
Figure 18. Load transient Figure 19. Startup transient
CIN = COUT = 1 µF; VIN = VEN = 4.3 V; VOUT = 3.3 V;
IOUT from 0.1 to 150 mA; trise = tfall = 25 µs
COUT = 1 µF; VIN = VEN = from 0 to 5.5 V; VOUT = 3.3 V;
IOUT = 150 mA
Figure 20. Enable transient
CIN = COUT = 1 µF; VIN = 4.3; VEN = from 0 to 5.5 V;
VOUT = 3.3 V; IOUT = 1 mA; trise = 25 µs
Package mechanical data LD59015xx
12/16 Doc ID 17488 Rev 3
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
.
ECOPACK® is an ST trademark.
Table 6. SOT323-5L 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°
LD59015xx Package mechanical data
Doc ID 17488 Rev 3 13/16
Figure 21. SOT323-5L dimensions
7091413_E
Package mechanical data LD59015xx
14/16 Doc ID 17488 Rev 3
Dim.
mm. inch.
Min. Typ. Max. Min. Typ. Max.
A 175 180185 6.889 7.086 7.283
C 12.81313.2 0.504 0.512 0.519
D 20.2 0.795
N59.5 60 60.5 2.362
T 14.4 0.567
Ao 2.25 0.088
Bo 2.7 0.106
Ko 1.2 0.047
Po 3.94 4.1 0.1530.157 0.161
P3.84 4.2 0.1490.157 0.165
Tape & reel SOT323-xL mechanical data
LD59015xx Revision history
Doc ID 17488 Rev 3 15/16
8 Revision history
Table 7. Document revision history
Date Revision Changes
10-May-2010 1 Initial release.
21-Dec-2011 2 Modified: operating input voltage (VIN) 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
.
LD59015xx
16/16 Doc ID 17488 Rev 3
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY TWO AUTHORIZED ST REPRESENTATIVES, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2012 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
