LD39030
Datasheet
300 mA very low dropout linear regulator IC
Features
DFN4 1x1
•
•
•
•
•
•
•
•
Input voltage from 1.5 to 5.5 V
Ultra low dropout voltage (300 mV typ. at 300 mA load)
Very low quiescent current (20 µA typ. at no load, 0.03 µA typ. in off mode)
Output voltage tolerance: ± 0.5 % (A version) or ± 2.0 % @ 25 °C (standard
version)
300 mA guaranteed output current
High PSRR (80 dB@1 kHz, 50 db@100 kHz)
Wide range of output voltages available on request: from 0.8 V up to 5.0 V in 50
mV step
Logic-controlled electronic shutdown
Internal soft-start
Optional output voltage discharge feature
Compatible with ceramic capacitor COUT = 0.47 µF
•
•
•
Internal constant current and thermal protections
Available in DFN4 1x1
Operating temperature range: -40 °C to 125 °C
•
•
•
Applications
Maturity status link
LD39030
•
•
•
•
•
Mobile phones
Tablets
Digital still cameras (DSC)
Cordless phones and similar battery-powered systems
Portable media players
Description
The LD39030 high accuracy voltage regulator provides 300 mA of maximum current
from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of
300 mV.
It is available in DFN4 1 x 1 package, allowing the maximum space saving.
The device is stabilized with a ceramic capacitor on the output. The ultra low drop
voltage, low quiescent current and low noise features, together with the internal softstart circuit, make the LD39030 suitable for low power battery-operated applications.
An enable logic control function puts the LD39030 in shutdown mode allowing a total
current consumption lower than 0.1 µA. Constant current and thermal protection are
provided.
DS11386 - Rev 4 - May 2018
For further information contact your local STMicroelectronics sales office.
www.st.com
LD39030
Diagram
1
Diagram
Figure 2. Block diagram
VIN
VOUT
Bias
generator
OPAMP
EN
Enable
Thermal
protection
Bandgap
reference
*
GND
AM13852V1
Note:
DS11386 - Rev 4
The output discharge MOSFET is optional.
page 2/20
LD39030
Pin configuration
2
Pin configuration
Figure 3. Pin connection (top view)
Table 1. Pin description
DS11386 - Rev 4
Pin n° DFN4 1x1
Symbol
Function
1
OUT
Output voltage
2
GND
Common ground
3
EN
Enable pin logic input: Low = shutdown, High = active
4
IN
Input voltage
Thermal pad
GND
Connect to GND on the PCB
page 3/20
LD39030
Typical application
3
Typical application
Figure 4. Typical application circuits
VIN
VI
ON
OFF
EN
VOUT
VO
LD39030
C In
GND
C Out
GIPD281020151007MT
DS11386 - Rev 4
page 4/20
LD39030
Maximum ratings
4
Maximum ratings
Table 2. Absolute maximum ratings
Note:
Symbol
Parameter
Value
Unit
VIN
Input voltage
- 0.3 to 7
V
VOUT
Output voltage
- 0.3 to VIN + 0.3
V
VEN
Enable input voltage
- 0.3 to 7
V
IOUT
Output current
Internally limited
mA
PD
Power dissipation
Internally limited
mW
TSTG
Storage temperature range
- 40 to 150
°C
TOP
Operating junction temperature range
- 40 to 125
°C
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. Thermal data
Symbol
Parameter
Value
Unit
RthJA
Thermal resistance junction-ambient
250
°C/W
Table 4. ESD Performance
Symbol
ESD
DS11386 - Rev 4
Parameter
ESD Protection voltage
Test conditions
Value
Unit
HBM
4
kV
MM
400
V
CDM
500
V
page 5/20
LD39030
Electrical characteristics
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
Symbol
Parameter
VIN
Operating input
voltage
VOUT
VOUT accuracy
(LD39030)
Test conditions
IOUT = 1 mA, TJ = 25 °C
IOUT = 1 mA,
-40 °C < TJ < 125 °C
IOUT = 1 mA, TJ = 25 °C
VOUT
VOUT accuracy
(LD39030A)
IOUT = 1 mA,
-40 °C < TJ < 125 °C
∆VOUT
∆VOUT
VDROP
Static line
regulation (1)
Static load
regulation
Dropout voltage
VOUT(NOM) + 1 V ≤ VIN ≤ 5.5
V, IOUT = 10 mA
Min.
Typ.
Max.
Unit
1.5
5.5
V
-2
2
%
-3
3
%
-0.5
0.5
%
-1.5
1.5
%
0.02
-40 °C < TJ < 125 °C
IOUT = 0 mA to 300 mA
%/V
0.2
18
-40 °C < TJ < 125 °C
mV
0.01
IOUT = 30 mA,VOUT = 2.8 V
35
IOUT = 300 mA, VOUT = 2.8
V
330
%/mA
mV
-40 °C < TJ < 125 °C
eN
Output noise
voltage
10 Hz to 100 kHz, IOUT = 10
mA
45
µVRMS/V
VIN = VOUT(NOM)+ 1 V +/VRIPPLE
VRIPPLE = 0.2 V Freq .=1
kHz
SVR
Supply voltage
rejection
80
IOUT = 30 mA
dB
VIN = VOUT(NOM)+ 1 V +/VRIPPLE
VRIPPLE = 0.2 V Freq. = 100
kHz
55
IOUT = 30 mA
DS11386 - Rev 4
IOUT = 0 mA
20
IOUT = 300 mA
130
Standby Current
VIN input current in OFF
MODE: VEN = GND
0.03
ISC
Short circuit
current
RL = 0
480
mA
RON
Output voltage
discharge
MOSFET
(only on LD39030DT,
LD39030ADT)
100
Ω
IQ
Quiescent
current
IStandby
40
1
µA
µA
page 6/20
LD39030
Electrical characteristics
Symbol
Parameter
Test conditions
Enable input
logic low
VIN = 1.5 V to 5.5 V
Min.
Typ.
VIN = 1.5 V to 5.5 V
Enable input
logic high
-40 °C < TJ < 125 °C
V
1
IEN
Enable pin input
current
TON (2)
Turn on time
100
TSHDN
Thermal
shutdown
160
Hysteresis
20
COUT
Output
capacitor
Unit
0.4
-40 °C < TJ < 125 °C
VEN
Max.
VEN = VIN
Capacitance (see )Figure
18. Stability area vs. (COUT, 0.47
ESR)
100
nA
µs
°C
22
µF
1. Not applicable for VOUT(NOM) > 4.5 V
2. 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
DS11386 - Rev 4
page 7/20
LD39030
Application information
6
Application information
6.1
Soft start function
The LD39030 has an internal soft start circuit. By increasing the startup time up to 100µs, without the need of any
external soft start capacitor, this feature is able to keep the regulator inrush current at startup under control.
6.2
Output discharge function
The LD39030 integrates a MOSFET connected between Vout and GND. This transistor is activated when the EN
pin goes to low logic level and has the function to quickly discharge the output capacitor when the device is
disabled by the user.
The device is available with or without auto-discharge feature.
See Section 9 Ordering information for more details.
6.3
Input and output capacitors
The LD39030 requires external capacitors to assure the regulator control loop stability.
Any good quality ceramic capacitor can be used but, the X5R and the X7R are suggested since they guarantee a
very stable combination of capacitance and ESR overtemperature.
Locating the input/output capacitors as closer as possible to the relative pins is recommended.
The LD39030 requires an input capacitor with a minimum value of 1 μF.
This capacitor must be located as closer as possible to the input pin of the device and returned to a clean analog
ground.
The control loop of the LD39030 is designed to work with an output ceramic capacitor.
This capacitor must meet the requirements of minimum capacitance and equivalent series resistance (ESR), as
shown in Figure 18. Stability area vs. (COUT, ESR). To assure stability, the output capacitor must maintain its ESR
and capacitance in the stable region, over the full operating temperature range.
The LD39030 shows stability with a minimum effective output capacitance of 220 nF.
However, to keep stability in all operating conditions (temperature, input voltage and load variations), a minimum
output capacitor of 0.47 µF is recommended.
The suggested combination of 1 μF input and output capacitors offers a good compromise among the stability of
the regulator, optimum transient response and total PCB area occupation.
DS11386 - Rev 4
page 8/20
LD39030
Typical characteristics
7
Typical characteristics
(CIN = COUT = 1 µF, VEN to VIN, TJ = 25°C unless otherwise specified)
Figure 5. Output voltage vs. temperature (I OUT = 1 mA)
Figure 6. Output voltage vs. temperature (I OUT = 200 mA)
3.4
3.38
Output Voltage [V]
Output Voltage [V]
3.36
3.34
3.32
3.3
3.28
3.26
3.24
3.22
3.2
-40
-25
0
25
55
Temperature [ °C]
VIN = 4.3 V, IOUT = 1 mA
85
-40
125
-25
0
25
55
Temperature [ °C]
85
VIN=4.3V, IOUT=200mA
AM13855V1
125
AM13856V1
Figure 8. Load regulation vs. temperature
Figure 7. Line regulation vs. temperature
50
Load regulation [mV]
Line regulation [%/V]
45
-0.05
40
35
30
25
20
15
10
5
-0.15
0
-50
Temperature [ °C]
VIN = 4.3 V to 5.5 V, IOUT = 10 mA
0
25
50
75
Temperature [°C]
100
125
VIN = 2.8 V, VOUT = 1.8 V IO = 0.3 A
AM13857V1
DS11386 - Rev 4
-25
GIPD281020151129MT
page 9/20
LD39030
Typical characteristics
Figure 9. Quiescent current vs. temperature (IOUT = 0 mA)
Figure 10. Quiescent current vs. temperature (IOUT = 200
mA)
50
260
240
220
200
180
160
140
120
100
80
60
40
20
0
45
Quiescent Current [µA]
Quiesce nt current [µA]
40
35
30
25
20
15
10
5
0
-40
-25
0
25
55
85
125
-50
Temperature [ °C]
VIN = 4.3 V, IOUT = 0 mA
-25
0
25
50
Temperature [°C]
75
100
125
VIN = 2.8 V, VOUT=1.8 V IO = 0.3 A
AM13859V1
GIPD281020151212MT
Figure 11. Shutdown current vs. temperature
Figure 12. Quiescent current vs. load current
200
1
180
Quiescent current [µA]
0.9
Quiescent curr ent [µA]
0.8
0.7
0.6
0.5
0.4
0.3
160
140
120
100
80
60
40
0.2
20
0.1
0
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.160.18 0.2 0.22 0.240.26 0.28 0.3
0
-40
-25
0
25
55
85
125
Load current [A]
Temperature [°C]
VIN = 2.8 V, VOUT = 1.8 V IO = 0 to 0.3 A
VIN = V, VEN = GND
AM13861V1
GIPD281020151230MT
Figure 14. Dropout voltage vs. temperature
Figure 13. Quiescent current vs. input voltage
275
100
250
90
Iout = 0 mA
225
Iout = 1 mA
Iout = 50 mA
175
60
50
40
30
125
100
75
50
10
25
0
0
1
V IN = 2 V, V OUT = 1 V
2
3
4
5
6
Input voltage [V]
AM13863V1
DS11386 - Rev 4
Iout = 100 mA
Iout = 200 mA
150
20
0
Iout = 30 mA
200
Iout = 10 mA
70
Dropout voltage [mV]
Quiescent current [µA]
80
-40
-25
0
25
Temperature [ °C]
55
85
125
AM13864V1
page 10/20
LD39030
Typical characteristics
Figure 15. Supply voltage rejection vs. frequency
Figure 16. Supply voltage rejection vs. input voltage
100
90
Iout = 1 mA
90
80
Iout = 30 mA
Iout = 100 mA
80
70
Iout = 200 mA
70
60
50
SVR [dB]
SVR [dB]
60
50
40
f = 1 kHz
40
f = 10 kHz
f = 100 kHz
30
30
20
20
10
10
0
100
1000
10000
Frequency [Hz]
100000
0
1000000
1
VIN= 2 V +/ - 200 m V, VOUT = 1 V, C OUT = 1 µF
1.5
2
2.5
3
3.5
Input voltage [V]
4
4.5
5
5.5
6
IOUT = 30mA , V OUT = 1 V , C OUT = 1 µF
AM13865V1
AM13866V1
Figure 18. Stability area vs. (COUT, ESR)
Figure 17. Output noise spectral density
4.0
1.4
Iout = 0 mA
3.5
Iout = 10 mA
1.2
1
2.5
ESR @ 100KHz[Ω]
eN [uV / SQRT(Hz)]
3.0
2.0
1.5
0.8
0.6
1.0
0.4
0.5
0.2
0.0
10
100
1000
10000
100000
STABILITY AREA
0
0
1
2
Frequency [Hz]
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
C OUT [µF] (nominal value)
V IN from 2 to
V IN = 2.0 V, V OUT = 1.0 V, C IN = C OUT = 1 µF
5.5 V, I OUT from 0 to 300 mA, C IN = 1 µF
AM13868V1
AM13867V1
Figure 19. Enable startup (VOUT = 1 V)
V EN
Figure 20. Enable startup (VOUT = 5 V)
V EN
V OUT
V OUT
I OUT
I OUT
V IN = 2 V , V EN = 0 V to V IN, I OUT = 0.2 A , V OUT =1 V, Tr = 5 µs
V IN = 5.5 V ,V EN = 0 V to 2 V, I OUT = 0.2A , V OUT = 5 V, Tr = 5 µs
AM13869V1
DS11386 - Rev 4
AM13870V1
page 11/20
LD39030
Typical characteristics
Figure 21. Turn-on time (VOUT = 1 V)
Figure 22. Turn-off time (VOUT = 1 V)
V IN
V IN
V OUT
V OUT
I OUT
I OUT
V IN = V EN = from 5.5 V to 0 V, I OUT = 0.2 A , V OUT = 1 V, T f = 5 µs
V IN = V EN = from 0 V to 5.5 V, I OUT = 0.2 A , V OUT = 1 V, T r = 5 µs
AM13871V1
AM13872V1
Figure 23. Turn-on time (VOUT = 5 V)
Figure 24. Turn-off time (VOUT = 5 V)
VI N
VOUT
V IN
IOUT
V OUT
I OUT
V IN = V EN = from 5.5 V to 0 V, I OUT = 0.2 A ,V OUT = 5 V, T f = 5 µs
VIN = V EN = from 0 V to 5.5 V, I OUT = 0.2A , VOUT = 5 V, Tr = 5 µs
AM13874V1
AM13873V1
Figure 25. Line transient (VOUT = 1 V)
V IN
Figure 26. Line transient (VOUT = 5 V)
VIN
V OUT
V OUT
V IN = V EN = from 2 V to 3 V , I OUT = 10 mA ,V OUT = 1 V, Tr= T f = 5 µs
V IN = V EN = from 5.1 V to 5.5 V, I
AM13875V1
DS11386 - Rev 4
OUT = 10 mA ,V OUT = 5 V, Tr =T f = 5 µs
AM13876V1
page 12/20
LD39030
Typical characteristics
Figure 27. Load transient (V OUT = 1 V)
Figure 28. Load transient (V OUT = 5 V)
IOUT
I OUT
VOUT
V OUT
V IN = V EN = 5.5 V, IOUT = from 0 to 0.2 A , V OUT = 5 V, t r= t f = 5 µs
V IN = V EN = 2 V, IOUT = from 0 to 0.2 A , V OUT = 1 V, t r= t f = 5 µs
AM13877V1
DS11386 - Rev 4
AM13878V1
page 13/20
LD39030
Package information
8
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. ECOPACK® is an ST trademark.
DS11386 - Rev 4
page 14/20
LD39030
DFN4 1x1 package info
8.1
DFN4 1x1 package information
Figure 29. DFN4 1x1 package outline
8405587_A
DS11386 - Rev 4
page 15/20
LD39030
DFN4 1x1 package info
Table 6. DFN4 1x1 mechanical data
Dim.
mm.
Min.
Typ.
Max.
A
0.34
0.37
0.40
A1
0
0.02
0.05
A3
0.10
b
0.17
0.22
0.27
D
0.95
1.00
1.05
D2
0.43
0.48
0.53
E
0.95
1.00
1.05
E2
0.43
0.48
0.53
e
DS11386 - Rev 4
0.65
L
0.20
K
0.15
0.25
0.30
page 16/20
LD39030
DFN4 1x1 package info
Figure 30. DFN4 1x1 recommended footprint
8405587_A
DS11386 - Rev 4
page 17/20
LD39030
Ordering information
9
Ordering information
Table 7. Order code
Order code
LD39030DTPU12R(1)
LD39030ADTPU12R
LD39030DTPU18R
LD39030ADTPU18R
LD39030DTPU25R
Output voltage (V)
Auto-dishcarge
1.2
Yes
1.8
Yes
2.5
Yes
2.8
Yes
3.0
Yes
3.3
Yes
(1)
LD39030ADTPU25R
(1)
LD39030DTPU28R
LD39030ADTPU28R
LD39030DTPU30R V
LD39030ADTPU30R V
LD39030DTPU33R
Tolerance %
Marking
2
X5
0.5
W5
2
X7
0.5
W7
2
XA
0.5
WA
2
XC
0.5
WC
2
XF
0.5
WF
2
XJ
1. Available on request.
DS11386 - Rev 4
page 18/20
LD39030
Revision history
Table 8. Document revision history
DS11386 - Rev 4
Date
Revision
16-Nov-2015
1
18-May-2016
2
30-Aug-2016
3
17-May-2018
4
Changes
Initial release.
Updated Section 9: "Ordering information".
Minor text changes.
Updated Ordering information.
Minor text changes.
Updated:
VOUT parameter Table 5. Electrical characteristics and Section 9 Ordering information.
page 19/20
LD39030
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DS11386 - Rev 4
page 20/20