LD39020
Datasheet
200 mA very low quiescent current linear regulator IC
Features
DFN4 1x1
SOT23-5L
•
•
•
•
•
•
•
•
Input voltage from 1.5 to 5.5 V
Ultra low dropout voltage (200 mV typ. at 200 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)
200 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 current limit and thermal protections
Available in DFN4 1x1 and SOT23-5L packages
Operating temperature range: -40 °C to 125 °C
•
•
•
Applications
Maturity status link
LD39020
•
•
•
•
•
Mobile phones
Tablets
Digital still cameras (DSC)
Cordless phones and similar battery-powered systems
Portable media players
Description
The LD39020 high accuracy voltage regulator provides 200 mA of maximum current
from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of
200 mV.
It is available in DFN4 1x1 and SOT23-5L packages, 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 LD39020 suitable for low power battery-operated applications.
An enable logic control function puts the LD39020 in shutdown mode allowing a total
current consumption lower than 0.1 µA. Constant current and thermal protection are
provided.
DS9956 - Rev 5 - January 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
LD39020
Diagram
1
Diagram
Figure 2. Block diagram
VIN
VOUT
Bias
generator
OPAMP
EN
Enable
Thermal
protection
Bandgap
reference
*
GND
AM13852V1
Note:
DS9956 - Rev 5
The output discharge MOSFET is optional.
page 2/30
LD39020
Pin configuration
2
Pin configuration
Figure 3. Pin connection (top view)
Table 1. Pin description
DS9956 - Rev 5
Pin DFN4 1x1
Pin SOT23-5L
Symbol
Function
1
5
OUT
Output voltage
2
2
GND
Common ground
3
3
EN
Enable pin logic input: Low = shutdown,
High = active
4
1
IN
Input voltage
Thermal pad
-
GND
Connect to GND on the PCB
-
4
NC
Not internally connected
page 3/30
LD39020
Typical application
3
Typical application
Figure 4. Typical application circuits
LD39020
DS9956 - Rev 5
page 4/30
LD39020
Maximum ratings
4
Maximum ratings
Table 2. Absolute maximum ratings
Symbol
VIN
Value
Unit
- 0.3 to 7
V
- 0.3 to VIN + 0.3
V
- 0.3 to 7
V
Input voltage
VOUT
Output voltage
VEN
Enable input voltage
IOUT
Output current
Internally limited
mA
Power dissipation
Internally limited
mW
PD
Note:
Parameter
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, DFN4 1x1
250
°C/W
RthJC
Thermal resistance junction-case, SOT23-5L
81
°C/W
RthJA
Thermal resistance junction-ambient, SOT23-5L
255
°C/W
Table 4. ESD performance
Symbol
ESD
DS9956 - Rev 5
Parameter
ESD Protection voltage
Test conditions
Value
Unit
HBM
4
kV
MM
400
V
CDM
500
V
page 5/30
LD39020
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 for LD39020T, LD39020DT
Symbol
VIN
Parameter
Test conditions
Operating input voltage
IOUT = 1 mA, TJ = 25 °C
VOUT
VOUT accuracy
IOUT = 1 mA,
-40 °C < TJ < 125 °C
∆VOUT
Static line regulation (1)
Min.
Max.
Unit
1.5
5.5
V
-2
2
%
-3
3
%
VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V,
IOUT = 10 mA
Typ.
0.02
-40 °C < TJ < 125 °C
∆VOUT
Static load regulation
0.2
IOUT = 0 mA to 200 mA
10
-40 °C < TJ < 125 °C
Dropout voltage
Output noise voltage
%/mA
35
IOUT = 200 mA, VOUT = 2.8 V
200
-40 °C < TJ < 125 °C
eN
mV
0.01
IOUT = 30 mA,VOUT = 2.8 V
VDROP
%/V
10 Hz to 100 kHz,
350
µVRMS/
VOUT
45
IOUT = 10 mA
mV
VIN = VOUT(NOM)+ 1 V +/- VRIPPLE
VRIPPLE = 0.2 V
80
Freq. = 1 kHz
SVR
Supply voltage rejection
dB
IOUT = 30 mA
VIN = VOUT(NOM)+ 1 V +/- VRIPPLE,
VRIPPLE = 0.2 V
55
Freq. = 100 kHz, IOUT = 30 mA
IOUT = 0 mA
20
IOUT = 200 mA
100
Standby current
VIN input current in OFF MODE:
VEN = GND
0.03
ISC
Short circuit current
RL = 0
RON
Output voltage discharge
MOSFET
(only on LD39020DT)
IQ
Quiescent current
IStandby
Enable input logic low
VEN
Enable input logic high
IEN
TON
DS9956 - Rev 5
(2)
Enable pin input current
Turn on time
250
µA
mA
100
Ω
0.4
-40 °C < TJ < 125 °C
-40 °C < TJ< 125 °C
1
µA
350
VIN = 1.5 V to 5.5 V
VIN = 1.5 V to 5.5 V
40
V
1
VEN = VIN
100
100
nA
µs
page 6/30
LD39020
Electrical characteristics
Symbol
TSHDN
COUT
Parameter
Test conditions
Min.
Typ.
Thermal shutdown
160
Hysteresis
20
Output capacitor
Capacitance see
Figure 18. Stability area vs. (COUT,
ESR)
0.47
Max.
Unit
°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
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 LD39020AT, LD39020ADT
Symbol
VIN
Parameter
Test conditions
Operating input voltage
IOUT = 1 mA, TJ = 25 °C
VOUT
VOUT accuracy
IOUT = 1 mA,
-40 °C < TJ < 125 °C
∆VOUT
Static line regulation(1)
Min.
Max.
Unit
1.5
5.5
V
-0.5
0.5
%
-1.5
1.5
%
VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V,
IOUT = 10 mA
Typ.
0.02
-40 °C < TJ < 125 °C
∆VOUT
Static load regulation
0.2
IOUT = 0 mA to 200 mA
10
-40 °C < TJ < 125 °C
Dropout voltage
Output noise voltage
%/mA
35
IOUT = 200 mA, VOUT = 2.8 V
200
-40 °C < TJ < 125 °C
eN
mV
0.01
IOUT = 30 mA, VOUT = 2.8 V
VDROP
%/V
10 Hz to 100 kHz,
350
µVRMS /
VOUT
45
IOUT = 10 mA
mV
VIN = VOUT(NOM)+ 1 V +/- VRIPPLE
VRIPPLE = 0.2 V
80
Freq. = 1 kHz
SVR
Supply voltage rejection
dB
IOUT = 30 mA
VIN = VOUT(NOM)+ 1 V +/- VRIPPLE,
VRIPPLE = 0.2 V
55
Freq. = 100 kHz, IOUT = 30 mA
IQ
IStandby
ISC
DS9956 - Rev 5
IOUT = 0 mA
20
IOUT = 200 mA
100
Standby current
VIN input current in OFF MODE:
VEN = GND
0.03
Short circuit current
RL = 0
Quiescent current
250
350
40
1
µA
µA
mA
page 7/30
LD39020
Electrical characteristics
Symbol
RON
Parameter
Output voltage discharge
MOSFET
Enable input logic low
VEN
Enable input logic high
IEN
TON (2)
TSHDN
COUT
Enable pin input current
Test conditions
Min.
(only on LD39020ADT)
Typ.
100
VIN = 1.5 V to 5.5 V
-40 °C < TJ < 125 °C
Unit
Ω
0.4
-40 °C < TJ < 125 °C
VIN = 1.5 V to 5.5 V
Max.
V
1
VEN = VIN
100
nA
Turn on time
100
µs
Thermal shutdown
160
°C
Hysteresis
20
Output capacitor
Capacitance see
Figure 18. Stability area vs. (COUT,
ESR)
0.47
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
DS9956 - Rev 5
page 8/30
LD39020
Application information
6
Application information
6.1
Soft-start function
The LD39020 has an internal soft start circuit. By increasing the startup time up to 100 µs, 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 LD39020 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 Table 10. DFN4 1x1 order code for more details.
6.3
Input and output capacitors
The LD39020 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 LD39020 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 LD39020 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 LD39020 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.
DS9956 - Rev 5
page 9/30
LD39020
Typical characteristics
7
Typical characteristics
(CIN = COUT = 1 µF, VEN to VIN, TJ = 25 °C unless otherwise specified)
Figure 6. Output voltage vs. temperature
(IOUT = 200 mA)
Figure 5. Output voltage vs. temperature
(IOUT = 1 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
VIN=4.3V, IOUT=200mA
AM13855V1
0
25
55
Temperature [ °C]
85
125
AM13856V1
Figure 8. Load regulation vs. temperature
Load regulation
Figure 7. Line regulation vs. temperature
Line regulation [%/V]
-25
-0.05
-0.15
Temperature [ °C]
VIN = 4.3 V to 5.5 V, IOUT = 10 mA
AM13857V1
DS9956 - Rev 5
page 10/30
LD39020
Typical characteristics
Figure 9. Quiescent current vs. temperature
(IOUT = 0 mA)
Figure 10. Quiescent current vs. temperature
(IOUT = 200 mA)
50
200
45
180
160
35
Quiescent current [µA]
Quiesce nt current [µA]
40
30
25
20
15
10
140
120
100
80
60
40
5
20
0
-40
-25
0
25
55
85
125
0
Temperature [ °C]
-40
-25
0
25
55
85
125
Temperature [ °C]
VIN = 4.3 V, IOUT = 0 mA
VIN=4.3V, IOUT= 200mA
AM13860V1
AM13859V1
Figure 11. Shutdown current vs. temperature
Figure 12. Quiescent current vs. load current
1
160
0.9
140
120
0.7
Quiescent current [µA]
Quiescent curr ent [µA]
0.8
0.6
0.5
0.4
0.3
0.2
100
80
60
40
20
0.1
0
0
-40
-25
0
25
55
85
0
125
0.02
0.04
0.06
0.08
Temperature [°C]
0.1
0.12
0.14
VIN = 4.3 V, VEN = GND
Figure 14. Dropout voltage vs. temperature
275
100
250
90
Iout = 0 mA
80
225
Iout = 1 mA
70
Iout = 30 mA
200
Iout = 10 mA
Iout = 50 mA
175
60
Dropout voltage [mV]
Quiescent current [µA]
0.2
AM13862V1
Figure 13. Quiescent current vs. input voltage
50
40
30
125
100
75
50
10
25
0
0
1
2
3
4
5
6
Input voltage [V]
AM13863V1
Iout = 100 mA
Iout = 200 mA
150
20
V IN = 2 V, VOUT = 1 V
DS9956 - Rev 5
0.18
VIN=2V, VOUT=1V
AM13861V1
0
0.16
Output current [A]
-40
-25
0
25
Temperature [ °C]
55
85
125
AM13864V1
page 11/30
LD39020
Typical characteristics
Figure 16. Supply voltage rejection vs. input
voltage
Figure 15. Supply voltage rejection vs. frequency
100
90
Iout = 1 mA
90
Iout = 30 mA
80
Iout = 100 mA
80
Iout = 200 mA
70
60
60
50
50
SVR [dB]
SVR [dB]
70
40
30
f = 1 kHz
40
f = 10 kHz
f = 100 kHz
30
20
20
10
10
0
100
1000
10000
Frequency [Hz]
100000
1000000
0
VIN = 2 V+/-200 mV, V OUT = 1 V, C OUT = 1 µF
1
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
ESR @100 KHz[Ω]
eN [uV / SQRT(Hz)]
3.0
2.5
2.0
1.5
1
0.8
0.6
1.0
0.4
0.5
0.2
0.0
10
100
1000
10000
100000
STABILITY AREA
0
0
Frequency [Hz]
1
2
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)
VIN from 2 to 5.5 V, I OUT from 0 to 300 mA, C IN = 1 µF
V IN = 2.0 V, V OUT = 1.0 V, C IN = C OUT = 1 µF
AM13868V1
AM13867V1
Figure 19. Enable startup (VOUT = 1 V)
V EN
Figure 20. Enable startup (VOUT = 5 V)
VEN
V OUT
VOUT
I OUT
I OUT
VIN = 2 V, VEN = 0 V to VIN , IOUT = 0.2 A, VOUT = 1 V, Tr = 5 µs
VIN = 5.5 V, VEN = 0 V to 2 V, I OUT = 0.2 A, VOUT = 5 V, Tr = 5 µs
AM13869V1
DS9956 - Rev 5
AM13870V1
page 12/30
LD39020
Typical characteristics
Figure 21. Turn-on time (VOUT = 1 V)
Figure 22. Turn-off time (VOUT = 1 V)
VIN
VIN
VOUT
VOUT
I OUT
I OUT
VIN = V EN = from 5.5 V to 0 V, IOUT = 0.2 A, VOUT = 1 V, Tf = 5 µs
V IN = VEN = from 0 V to 5.5 V, I OUT = 0.2 A, VOUT = 1 V, Tr = 5 µs
AM13871V1
AM13872V1
Figure 23. Turn-on time (VOUT = 5 V)
Figure 24. Turn-off time (VOUT = 5 V)
VIN
VOUT
VIN
IOUT
VOUT
I OUT
VIN = VEN = from 0 V to 5.5 V, IOUT = 0.2 A, VOUT = 5 V, Tr = 5 µs
VIN = VEN = from 5.5 V to 0 V, I OUT = 0.2 A, VOUT = 5 V, Tf = 5 µs
AM13874V1
AM13873V1
Figure 25. Line transient (VOUT = 1 V)
Figure 26. Line transient (VOUT = 5 V)
VIN
VIN
VOUT
VOUT
VIN = VEN = from 2 V to 3 V, I OUT = 10 mA, VOUT = 1 V, Tr = Tf = 5 µs
AM13875V1
DS9956 - Rev 5
VIN = VEN = from 5.1 V to 5.5 V, IOUT = 10 mA, VOUT = 5 V, Tr =Tf = 5 µs
AM13876V1
page 13/30
LD39020
Typical characteristics
Figure 27. Load transient (VOUT = 1 V)
Figure 28. Load transient (VOUT = 5 V)
IOUT
I OUT
VOUT
V OUT
VIN = VEN = 2 V, IOUT = from 0 to 0.2 A, VOUT = 1 V, tr = tf = 5 µs
AM13877V1
DS9956 - Rev 5
VIN = VEN = 5.5 V, IOUT = from 0 to 0.2 A, VOUT = 5 V, tr = tf = 5 µs
AM13878V1
page 14/30
LD39020
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.
DS9956 - Rev 5
page 15/30
LD39020
DFN4 1x1 package info
8.1
DFN4 1x1 package info
Figure 29. DFN4 1x1 package outline
8405587_A
DS9956 - Rev 5
page 16/30
LD39020
DFN4 1x1 package info
Table 7. 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
DS9956 - Rev 5
0.65
L
0.20
K
0.15
0.25
0.30
page 17/30
LD39020
DFN4 1x1 package info
Figure 30. DFN4 1x1 recommended footprint
8405587_A
DS9956 - Rev 5
page 18/30
LD39020
DFN4 1x1 package info
Figure 31. DFN4 1x1 tape outline
Figure 32. DFN4 1x1 reel outline
DS9956 - Rev 5
Tape width (mm)
A max.
N min.
W1 max.
W2 max.
W3 min. / max.
8
180
60
8.4
14.4
7.9 / 10.9
page 19/30
LD39020
DFN4 1x1 package info
Figure 33. DFN4 1x1 orientation
DS9956 - Rev 5
page 20/30
LD39020
SOT23-5L mechanical data
8.2
SOT23-5L mechanical data
Figure 34. SOT23-5L package outline
7049676_k
Table 8. SOT23-5L package mechanical data
Dim.
DS9956 - Rev 5
mm
Min.
Typ.
Max.
A
0.90
1.45
A1
0
0.15
A2
0.90
1.30
b
0.30
0.50
c
0.09
0.20
D
2.95
E
1.60
e
0.95
H
2.80
L
0.30
0.60
θ
0°
8°
page 21/30
LD39020
SOT23-5L mechanical data
Figure 35. SOT23-5L recommended footprint
Note:
DS9956 - Rev 5
Dimensions are in mm
page 22/30
LD39020
SOT23-5L packing information
8.3
SOT23-5L packing information
Figure 36. SOT23-5L tape and reel outline
D
A
N
T
Po
Bo
Ao
Ko
P
Table 9. SOT23-5L tape and reel mechanical data
Dim.
mm
Min.
Typ.
A
180
C
12.8
D
20.2
N
60
13.0
T
DS9956 - Rev 5
Max.
13.2
14.4
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
page 23/30
LD39020
Order code
9
Order code
Table 10. DFN4 1x1 order code
Order code
LD39020ADTPU08R
LD39020DTPU08R
LD39020ADTPU11R
LD39020DTPU11R
LD39020ADTPU13R
LD39020DTPU13R
LD39020ADTPU15R
Output voltage (V)
Auto-discharge
0.8
Yes
1.1
Yes
1.3
Yes
1.5
Yes
1.8
Yes
1.85
No
2.1
Yes
2.5
Yes
2.7
Yes
2.8
Yes
3
Yes
3.1
Yes
3.2
No
(1)
LD39020DTPU15R
LD39020ADTPU18R
LD39020DTPU18R
LD39020ATPU185R
LD39020TPU185R
LD39020ADTPU21R
LD39020DTPU21R(1)
LD39020ADTPU25R
LD39020DTPU25R
LD39020ADTPU27R(1)
LD39020DTPU27R(1)
LD39020ADTPU28R
LD39020DTPU28R(1)
LD39020ADTPU30R
LD39020DTPU30R
LD39020ADTPU31R(1)
LD39020DTPU31R
LD39020ATPU32R
LD39020TPU32R
LD39020ADTPU33R
LD39020DTPU33R
LD39020ATPU33R
Yes
3.3
No
LD39020TPU33R
LD39020ADTPU40R(1)
LD39020DTPU40R
LD39020ADTPU47R(1)
LD39020DTPU47R
4
Yes
4.7
Yes
Tolerance (%)
Marking
0.5
A1
2
08
0.5
A4
2
11
0.5
AP
2
13
0.5
A6
2
15
0.5
A7
2
18
0.5
BR
2
CR
0.5
A9
2
21
0.5
AA
2
25
0.5
AB
2
27
0.5
AC
2
28
0.5
AF
2
30
0.5
AG
2
31
0.5
BH
2
CH
0.5
AJ
2
33
0.5
BJ
2
CJ
0.5
AL
2
40
0.5
AM
2
47
1. Available on request.
DS9956 - Rev 5
page 24/30
LD39020
Order code
Table 11. SOT23-5L order code
DS9956 - Rev 5
Order code
Output voltage (V)
Auto-discharge
Tolerance (%)
Marking
LD39020ADM30R
3.0
Yes
0.5
AD30
page 25/30
LD39020
Revision history
Table 12. Document revision history
Date
Revision
04-Dec-2013
1
Initial release.
02-Apr-2014
2
Updated Table 10: "DFN4 1x1 order codes"..
05-Jun-2015
3
Changes
Added SOT23-5L package. Modified features and description in cover page.
Updated Section 7: "Pin configuration" and Table 3: "Thermal data". Added
Section 13.2: "SOT23-5L package information" and Section 13.3: "SOT23-5L
packing information".
Minor text changes.
Updated package name from DFN1x1-4L to DFN4 1x1.
03-Jul-2015
4
Updated note in Table 11: "SOT23-5L order code".
Minor text changes.
07-Jan-2019
5
Added Figure 31. DFN4 1x1 tape outline, Figure 32. DFN4 1x1 reel outline and
Figure 33. DFN4 1x1 orientation.
Updated Section 9 Order code.
DS9956 - Rev 5
page 26/30
LD39020
Contents
Contents
1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3
Typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5
Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.1
Soft start function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2
Output discharge function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3
Input and output capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7
Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
8
Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
9
8.1
DFN4 1x1 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.2
SOT23-5L package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.3
SOT23-5L packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
DS9956 - Rev 5
page 27/30
LD39020
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . .
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ESD performance . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical characteristics for LD39020T, LD39020DT. . .
Electrical characteristics for LD39020AT, LD39020ADT.
DFN4 1x1 mechanical data . . . . . . . . . . . . . . . . . . . .
SOT23-5L package mechanical data . . . . . . . . . . . . .
SOT23-5L tape and reel mechanical data . . . . . . . . . .
DFN4 1x1 order code . . . . . . . . . . . . . . . . . . . . . . . .
SOT23-5L order code. . . . . . . . . . . . . . . . . . . . . . . .
Document revision history . . . . . . . . . . . . . . . . . . . . .
DS9956 - Rev 5
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. 3
. 5
. 5
. 5
. 6
. 7
17
21
23
24
25
26
page 28/30
LD39020
List of figures
List of figures
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Figure 30.
Figure 31.
Figure 32.
Figure 33.
Figure 34.
Figure 35.
Figure 36.
DS9956 - Rev 5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin connection (top view) . . . . . . . . . . . . . . . . . . .
Typical application circuits . . . . . . . . . . . . . . . . . .
Output voltage vs. temperature (IOUT = 1 mA). . . . .
Output voltage vs. temperature (IOUT = 200 mA) . . .
Line regulation vs. temperature. . . . . . . . . . . . . . .
Load regulation vs. temperature . . . . . . . . . . . . . .
Quiescent current vs. temperature (IOUT = 0 mA) . .
Quiescent current vs. temperature (IOUT = 200 mA).
Shutdown current vs. temperature. . . . . . . . . . . . .
Quiescent current vs. load current . . . . . . . . . . . . .
Quiescent current vs. input voltage . . . . . . . . . . . .
Dropout voltage vs. temperature . . . . . . . . . . . . . .
Supply voltage rejection vs. frequency . . . . . . . . . .
Supply voltage rejection vs. input voltage . . . . . . . .
Output noise spectral density . . . . . . . . . . . . . . . .
Stability area vs. (COUT, ESR) . . . . . . . . . . . . . . .
Enable startup (VOUT = 1 V) . . . . . . . . . . . . . . . . .
Enable startup (VOUT = 5 V) . . . . . . . . . . . . . . . . .
Turn-on time (VOUT = 1 V) . . . . . . . . . . . . . . . . . .
Turn-off time (VOUT = 1 V) . . . . . . . . . . . . . . . . . .
Turn-on time (VOUT = 5 V) . . . . . . . . . . . . . . . . . .
Turn-off time (VOUT = 5 V) . . . . . . . . . . . . . . . . . .
Line transient (VOUT = 1 V). . . . . . . . . . . . . . . . . .
Line transient (VOUT = 5 V). . . . . . . . . . . . . . . . . .
Load transient (VOUT = 1 V) . . . . . . . . . . . . . . . . .
Load transient (VOUT = 5 V) . . . . . . . . . . . . . . . . .
DFN4 1x1 package outline . . . . . . . . . . . . . . . . . .
DFN4 1x1 recommended footprint. . . . . . . . . . . . .
DFN4 1x1 tape outline . . . . . . . . . . . . . . . . . . . . .
DFN4 1x1 reel outline . . . . . . . . . . . . . . . . . . . . .
DFN4 1x1 orientation . . . . . . . . . . . . . . . . . . . . .
SOT23-5L package outline. . . . . . . . . . . . . . . . . .
SOT23-5L recommended footprint . . . . . . . . . . . .
SOT23-5L tape and reel outline . . . . . . . . . . . . . .
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page 29/30
LD39020
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
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products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
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No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2019 STMicroelectronics – All rights reserved
DS9956 - Rev 5
page 30/30