LD39115J
150 mA low quiescent current low noise voltage regulator
Datasheet - production data
Flip-chip 4 bumps 0.8 x 0.8 mm. pitch 0.4 mm
Temperature range: -40 °C to 125 °C
Applications
Mobile phones
Personal digital assistants (PDAs)
Flip-chip 4
Cordless phones and similar battery-powered
systems
Features
Description
Input voltage from 1.5 to 5.5 V
Ultra low dropout voltage (80 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)
Very low noise (33 µVRMS from 1 kHz to 100
kHz at VOUT = 1.8 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 4.5 V with 100 mV step
The LD39115J 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 stabilized with a 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 65 dB at low frequencies and starts to
roll off at 10 kHz. An enable logic control function
puts the LD39115J in shutdown mode allowing a
total current consumption lower than 1 µA. The
device also includes a short-circuit constant
current limiting and thermal protection.
Logic-controlled electronic shutdown
Compatible with ceramic capacitor COUT = 1 µF
Internal current and thermal limit
Table 1. Device summary
Order codes
Output voltages
LD39115J12R
1.2 V
LD39115J14R
1.4 V
LD39115J15R
1.5 V
LD39115J18R
1.8 V
LD39115J25R
2.5 V
LD39115J28R
2.8 V
LD39115J30R
3.0 V
LD39115J33R
3.3 V
February 2021
This is information on a product in full production.
DocID15527 Rev 8
1/21
www.st.com
Contents
LD39115J
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8
Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9
Different output voltage versions of the LD39115J
available on request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21
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LD39115J
1
Diagram
Diagram
Figure 1. Block diagram
OUT
IN
BandGap
1.22 V
R1
Trimming
Thermal
Protection
R2
Enable
EN
GND
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21
Pin configuration
2
LD39115J
Pin configuration
Figure 2. Pin connection (top view)
Table 2. Pin description
4/21
Pin n°
Symbol
A2
EN
A1
GND
B2
IN
B1
OUT
Function
Enable pin logic input: Low = shutdown, High = active
Common ground
Input voltage of the LDO
Output voltage
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LD39115J
3
Typical application
Typical application
Figure 3. Typical application circuit
VIN
IN
1 µF
VEN
VOUT
OUT
1 µF
EN
Load
GND
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21
Maximum ratings
4
LD39115J
Maximum ratings
Table 3. Absolute maximum ratings
Symbol
VIN
Parameter
DC input voltage
Value
Unit
- 0.3 to 6
V
VOUT
DC output voltage
- 0.3 to VI + 0.3
V
VEN
Enable input voltage
- 0.3 to VI + 0.3
V
IOUT
Output current
Internally limited
mA
Power dissipation
Internally limited
mW
PD
TSTG
Storage temperature range
- 65 to 150
°C
TOP
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
RthJA
Parameter
Value
Unit
180
°C/W
Test conditions
Value
Unit
HBM
4
kV
Thermal resistance junction-ambient
Table 5. ESD performance
Symbol
ESD
6/21
Parameter
ESD protection voltage
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LD39115J
5
Electrical characteristics
Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless
otherwise specified.
Table 6. Electrical characteristics for LD39115J (1)
Symbol
Parameter
VIN
Operating input voltage
VUVLO
VOUT
Test conditions
Min.
1.5
Turn-on threshold
1.45
Turn-off threshold
VOUT accuracy
Typ.
1.30
Max.
Unit
5.5
V
1.48
V
1.35
mV
VOUT > 1.5 V, IOUT = 1 mA,
TJ = 25 °C
-2.0
2.0
%
VOUT > 1.5 V, IOUT = 1 mA,
-40 °C < TJ < 125 °C
-3.0
3.0
%
VOUT 1.5 V, IOUT = 1 mA
10
mV
VOUT 1.5 V, IOUT = 1 mA,
-40 °C < TJ < 125 °C
30
mV
0.01
%/V
10
mVpp
VOUT
Static line regulation
VOUT +1 V VIN 5.5 V,
IOUT = 1 mA
VOUT
Transient line
regulation (2)
VIN = +500 mV, IOUT = 1 mA,
TR = TF = 5 µs
VOUT
Static load regulation
IOUT = 1 mA to 150 mA
0.002
%/mA
VOUT
Transient load
regulation (2)
IOUT = 1 mA to 150 mA,
tR = tF = 5 µs
40
mVpp
VDROP
Dropout voltage (3)
IOUT = 100 mA, VOUT > 1.5 V
-40 °C < TJ < 125 °C
80
Output noise voltage
10 Hz to 100 kHz, IOUT = 10 mA
30
VIN = VOUTNOM +1 V +/- VRIPPLE
VRIPPLE = 0.1 V Freq. = 1 kHz
IOUT = 10 mA
74
VIN = VOUTNOM + 0.5 V +/- VRIPPLE
VRIPPLE = 0.1 V Freq. = 10 kHz
IOUT = 10 mA
67
IOUT = 0 mA
20
eN
SVR
Supply voltage
rejection VOUT = 1.5 V
IOUT = 0 to 150 mA
Quiescent current
DocID15527 Rev 8
µVRMS/V
50
35
µA
IOUT = 0 to 150 mA,
-40 °C < TJ < 125 °C
VIN input current in OFF MODE:
VEN = GND
mV
dB
IOUT = 0 mA, -40 °C < TJ < 125 °C
IQ
110
70
0.001
1
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Electrical characteristics
LD39115J
Table 6. Electrical characteristics for LD39115J (continued)(1)
Symbol
ISC
Parameter
Test conditions
Short circuit current
RL = 0
Enable input logic low
VIN = 1.5 V to 5.5 V,
-40 °C < TJ < 125 °C
Enable input logic high
VIN = 1.5 V to 5.5 V,
-40 °C < TJ < 125 °C
VEN
Min.
Typ.
200
0.4
V
0.9
Enable pin input current VSHDN = VIN
0.1
TON
Turn on time (4)
30
Thermal shutdown
160
Hysteresis
20
COUT
Output capacitor
Capacitance (see Section 6: Typical
performance characteristics)
Unit
mA
IEN
TSHDN
Max.
1
100
nA
µs
°C
22
µF
1. For VOUT(NOM) < 1.2 V, VIN = 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 for output voltages below 1.5 V.
4. Turn-on time is time measured between the enable input just exceeding VEN high value and the output voltage just
reaching 95 % of its nominal value.
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6
Typical performance characteristics
Typical performance characteristics
CIN = COUT = 1 µF, VEN to VIN.
Figure 4. Output voltage vs. temperature
(VOUT = 1.2 V)
1.3
Figure 5. Output voltage vs. temperature
(VOUT = 2.8 V)
3
VIN = 2.2 V, IOUT = 1 mA
1.28
1.26
2.9
1.24
1.22
1.2
VOUT [V]
VOUT [V]
VIN = 3.8 V, IOUT = 1 mA
2.95
1.18
1.16
2.85
2.8
2.75
2.7
1.14
1.12
VOUT = 1.2 V
VOUT = 2.8 V
2.65
2.6
1.1
-75
-50
-25
0
25
50
75
-75
100 125 150 175
-50
-25
0
25
T [°C]
Figure 6. Line regulation vs. temperature
75
100 125 150 175
Figure 7. Load regulation vs. temperature
0.004
0.05
VIN = from 2.2 V to 5.5 V, IOUT = 1 mA
VIN = 2.2 V, IOUT = from 1 to 150 mA
0.0035
0.03
VOUT=1.2V
0.02
Load [%/mA]
0.04
Line [%/V]
50
T [°C]
0.003
0.0025
0.002
0.0015
0.001
0.01
0.0005
VOUT=1.2 V
0
0
-75
-50
-25
0
25
50
75
100 125 150 175
-75
-50
-25
0
25
50
75
100 125 150 175
T [°C]
T [°C]
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Typical performance characteristics
LD39115J
Figure 8. Short-circuit current vs. drop voltage
0.09
0.4
0.35
125
0.08
85
0.07
55
0.3
25
0.25
0
0.2
-25
0.15
-40
0.1
VDROPOUT [V]
0.45
ISC [A]
Figure 9. Dropout voltage vs. temperature
0.06
0.05
0.04
0.03
0.02
CIN = 1 µF COUT = 1 µF(+ 10 µF electrolitycs)
0.05
IOUT = 0.1 A
VOUT = 2.8 V
0.01
0
0
1
2
3
4
5
0
6
-75 -50 -25
0
DROP [V]
Figure 10. Dropout voltage vs. output current
100 125 150 175
125
1.2
0.1
0.08
0.06
0.04
VOUT = 2.8 V
0
0
0.05
0.1
0.15
0.2
25
0
0.6
-25
0.4
-40
VOUT = 1.3 V
0
0
0.25
1
2
3
3
85
25
0
1.5
-25
1
-40
VOUT = 2.8 V
0.5
0
1
2
3
VIN [V]
4
5
6
VEN [V]
55
2
5
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
VIN = 2.2 V, IOUT = 1 mA
-75 -50 -25
0
25
50
75
100 125 150 175
TEMPERATURE [°C]
10/21
6
Figure 13. Enable threshold vs. temperature
125
IOUT = 0.15 A
2.5
4
VIN [V]
IOUT [A]
Figure 12. Output voltage vs. input voltage
(VOUT = 2.8 V)
55
0.8
0.2
0.02
85
IOUT = 0.15 A
1
VOUT [V]
VDROPOUT [V]
75
1.4
0.12
VOUT [V]
50
Figure 11. Output voltage vs. input voltage
(VOUT = 1.3 V)
0.14
0
25
TEMPERATURE [°C]
DocID15527 Rev 8
LD39115J
Typical performance characteristics
Figure 14. Quiescent current vs. temperature
(VOUT = 1.2 V, IOUT = 0 mA)
45
40
Figure 15. Quiescent current vs. temperature
(VOUT = 1.2 V, IOUT = 0.15 A)
70
VIN = 2.2 V, No Load
35
50
30
IQ [µA]
IQ [µA]
VIN = 2.2 V, IOUT = 0.15 A
60
25
20
15
40
30
20
10
VOUT = 1.2 V
10
5
VOUT = 1.2 V
0
-75 -50 -25
0
25
50
75
0
-75 -50 -25
100 125 150 175
0
Figure 16. Quiescent current vs. temperature
(VOUT = 2.8 V, IOUT = 0.15 A)
60
IQ [µA]
IQ [µA]
50
40
30
VOUT = 2.8 V
10
0
-75 -50 -25
0
25
50
75
75
100 125 150 175
Figure 17. Quiescent current vs. input voltage
VIN = 3.8 V, IOUT = 0.15 A
20
50
TEMPERATURE [°C]
TEMPERATURE [°C]
70
25
25
22.5
20
17.5
15
12.5
10
7.5
5
2.5
0
IOUT = 1 mA
VOUT = 1.3 V
0
100 125 150 175
0.5 1
1.5 2
2.5 3
3.5 4
4.5 5
5.5 6
VIN [V]
TEMPERATURE [°C]
Figure 18. Quiescent current vs. output current
Figure 19. Supply voltage rejection vs.
temperature (VOUT = 1.2 V)
100
VIN from 2.1 V to 2.3 V IOUT = 10 mA, Freq. = 1 kHz
SVR [dB]
90
80
70
60
VOUT = 1.2 V
50
40
-75 -50 -25
0
25
50
75
100 125 150 175
T [°C]
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Typical performance characteristics
LD39115J
Figure 20. Supply voltage rejection vs.
temperature (VOUT = 1.3 V)
Figure 21. Supply voltage rejection vs.
temperature (Freq. = 1 kHz)
100
100
VIN from 3.7 V to 3.9 V, IOUT = 10 mA, Freq. = 1 kHz
90
90
80
80
SVR [dB]
SVR [dB]
VIN from 2.2 V to 2.4 V, IOUT = 10 mA, Freq. = 1 kHz
70
60
70
60
VOUT = 1.3 V
50
50
40
40
VOUT = 2.8 V
-75 -50 -25
0
25
50
75
-75 -50 -25
100 125 150 175
0
25
75
100 125 150 175
T [°C]
T [°C]
Figure 22. Supply voltage rejection vs.
temperature (Freq. = 10 kHz)
Figure 23. Supply voltage rejection vs.
temperature (VOUT = 2.8 V)
100
100
VIN from 1.7 V to 1.9 V, IOUT = 10 mA, Freq. = 10 kHz
VIN from 3.2 V to 3.4 V, IOUT = 10 mA, Freq. = 10 kHz
90
90
80
80
SVR [dB]
SVR [dB]
50
70
60
70
60
VOUT = 2.8 V
50
50
VOUT = 1.3 V
40
40
-75 -50 -25
0
25
50
75
-75 -50 -25
100 125 150 175
0
25
VIN from 2.1 V to 2.3 V, IOUT = 10 mA
VOUT = 1.2 V
0
10
20
30
40
50
60
70
80
90 100 110
100
90
80
70
60
50
40
30
20
10
0
100 125 150 175
VIN from 1.7 V to 1.9 V, IOUT = 10 mA
VOUT = 1.3 V
0
10
20
30
40
50
60
70
Frequency [KHz]
Frequency [kHz]
12/21
75
Figure 25. Supply voltage rejection vs.
frequency (VOUT = 1.3 V)
SVR [dB]
SVR [dB]
Figure 24. Supply voltage rejection vs.
frequency (VOUT = 1.2 V)
100
90
80
70
60
50
40
30
20
10
0
50
T [°C]
T [°C]
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80
90 100 110
LD39115J
Typical performance characteristics
100
90
80
70
60
50
40
30
20
10
0
Figure 27. Supply voltage rejection vs. output
current
100
VIN from 3.2 V to 3.4 V, IOUT = 10 mA
VIN from 1.7 V to 1.9 V, F = 10 kHz
90
80
70
SVR [dB]
SVR [dB]
Figure 26. Supply voltage rejection vs.
frequency (VOUT = 2.8 V)
60
50
40
30
VOUT = 2.8 V
VOUT = 1.3 V
20
10
0
0
10 20 30 40 50 60 70 80 90 100 110 120
0
0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2 0.225 0.25
IOUT [A]
Frequency [kHz]
Figure 28. LD39115J noise
Figure 29. Line regulation transient
Noise [µV/SQRT(Hz)]
1
VOUT = 1.3 V, VIN = 2.3 V, TA = 25 °C
0.8
0.6
VIN
0.4
0.2
VOUT
0
0
20000
40000
60000
80000
100000
Freq [Hz]
VIN from 2.2 V to 2.7 V, IOUT = 1 mA, COUT = 1 µF, No CIN
tRISE/FALL = 5 µs
Figure 30. Start up transient
Figure 31. Enable transient (VOUT = 1.2 V)
VIN
VEN
VOUT
VOUT
VIN from 0 to 2.3 V, IOUT = 1 mA COUT = 1 µF No CIN,
VOUT = 1.2 V
VIN = 2.3 V, VEN from 0 to 2 V, IOUT = 1 mA, Trise = 5 µs
tRISE = 60 µs
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21
Typical performance characteristics
LD39115J
Figure 32. Enable transient (VOUT = 2.8 V)
Figure 33. Load transient (VOUT = 1.2 V)
IOUT
VEN
VOUT = 1.2 V
VOUT
VOUT = 2.8 V
VIN = 3.8 V, VEN from 0 to 2 V, IOUT = 1 mA, tRISE = 5 µs
VOUT
VIN = 2. 2 V, IOUT = from 1 to 150 mA, tRISE/FALL = 5 µs
Figure 34. Load transient (VOUT = 2.8 V)
Figure 35. ESR required for stability with
ceramics capacitors
2.5
VOUT
VOUT = 2.8 V
ESR @ 100 kHz[ohm]
2.25
IOUT
UNSTABLE ZONE
2
1.75
1.5
IOUT = from 1 mA to 150 mA, CIN = 1µF (ceramic)
1.25
1
STABLE ZONE
0.75
0.5
0.25
0
1
Vin = 3.8 V, IOUT = from 1 to 150 mA, tRISE/FALL = 5 µs
14/21
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22
COUT [µF] (nominal value)
VIN = 2. 2 V, IOUT = from 1 to 150 mA, tRISE/FALL = 5 µs
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LD39115J
7
Package mechanical data
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.
Figure 36. Flip-chip 4 drawings
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Package mechanical data
LD39115J
Table 7. Flip-chip 4 mechanical data
mm
Dim.
Min.
Typ.
Max.
A
0.52
0.56
0.60
A1
0.17
0.20
0.23
A2
0.35
0.36
0.37
b
0.23
0.25
0.29
D
0.758
0.788
0.818
D1
E
0.4
0.758
E1
0.788
0.4
SD
0.18
0.2
0.22
SE
0.18
0.2
0.22
f
0.199
ccc
0.075
Figure 37. Flip-chip 4 footprint
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LD39115J
8
Packaging mechanical data
Packaging mechanical data
Figure 38. Flip-chip 4 tape and reel drawing
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21
Packaging mechanical data
LD39115J
Table 8. Flip-chip 4 tape and reel mechanical data
mm
Dim.
Min.
Typ.
A
178
C
12.8
D
20.2
N
59
13.2
60
T
18/21
Max.
61
8.4
Ao
0.82
0.87
0.92
Bo
0.82
0.87
0.92
Ko
0.64
0.69
0.74
Po
3.9
4.0
4.1
P
3.9
4.0
4.1
DocID15527 Rev 8
LD39115J
9
Different output voltage versions of the LD39115J available on request
Different output voltage versions of the LD39115J
available on request
Table 9. Options available on request
Order codes
Output voltages
LD39115J08R
0.8 V
LD39115J10R
1.0 V
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Revision history
10
LD39115J
Revision history
Table 10. Document revision history
Date
Revision
26-Mar-2009
1
Initial release.
12-Jun-2009
2
Modified: Table 1 on page 1 and Table 8 on page 19.
05-Aug-2009
3
Modified: tape and reel mechanical data on page 18.
17-May-2011
4
Modified: Table 1 on page 1 and Table 8 on page 19.
20-Dec-2011
5
Added: new order code LD39115J25R Table 1 on page 1.
16-Jan-2014
6
Part number LD39115Jxx changed to LD39115J.
Updated the Description in cover page, Section 7: Package mechanical data.
Added Section 8: Packaging mechanical data.
Minor text changes.
12-Sep-2018
7
Added Table 5: ESD performance.
23-Feb-2021
8
Updated Figure 18 and Figure 28.
20/21
Changes
DocID15527 Rev 8
LD39115J
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