LDL1117S15R [STMICROELECTRONICS]
1.2 A high PSRR low-dropout linear voltage regulator;
| 型号： | LDL1117S15R |
| 厂家： | 
ST |
| 描述： | 1.2 A high PSRR low-dropout linear voltage regulator 光电二极管 输出元件 调节器 |
| 文件： | 总23页 (文件大小：1221K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LDL1117
Datasheet
1.2 A high PSRR low-dropout linear voltage regulator
Features
•
•
•
Input voltage from 2.5 V to 18 V
20 V AMR
Available on fixed output voltages: 1.2 V (1.185 V), 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V,
5.0 V (other options are available on request)
•
•
•
•
•
•
Guaranteed output current 1.2 A
Typical dropout 350 mV @ 1.2 A
Internal thermal, current and power limitation
High PSRR 87 dB @ 120 Hz
SOT223
Operating temperature range: -40 °C to 125°C
Package SOT223
Applications
•
•
•
•
•
Consumer
Industrial
SMPS
Motherboard P.O.L.
DC-DC post-regulation
Description
Maturity status link
The LDL1117 provides 1.2 A of maximum current with an input voltage range from
2.5 V to 18 V, and a typical dropout voltage of 350 mV @ 1.2 A.
LDL1117
The high power supply rejection ratio of 87 dB at 120 Hz, rolling down to more than
40 dB at 100 kHz, makes the LDL1117 suitable for direct regulations in SMPS and
secondary linear regulations in DC-DC converters.
This device includes current limit, SOA and thermal protections.
DS12022 - Rev 6 - April 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
LDL1117
Diagram
1
Diagram
Figure 1. Block diagram
DS12022 - Rev 6
page 2/23
LDL1117
Pin configuration
2
Pin configuration
Figure 2. Pin connection (top view)
Table 1. Pin description
Pin name
Pin number
Description
GND
1
2
3
Ground
V
OUT
Output voltage
Input voltage
V
IN
Note:
The tab is connected to VOUT.
DS12022 - Rev 6
page 3/23
LDL1117
Typical application
3
Typical application
Figure 3. Typical application diagram
LDL1117
DS12022 - Rev 6
page 4/23
LDL1117
Maximum ratings
4
Maximum ratings
Table 2. Absolute maximum ratings
Parameter
Symbol
Value
Unit
V
V
Input supply voltage
Output voltage
-0.3 to 20
IN
V
I
-0.3 to V + 0.3
V
OUT
IN
Output current
Internally limited
Internally limited
- 40 to 125
150
A
OUT
P
Power dissipation
W
°C
°C
°C
D
T
J-OP
Operating junction temperature
Maximum junction temperature
Storage temperature
T
J-MAX
T
- 55 to 150
STG
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions is not implied.
Table 3. Thermal data
Symbol
Parameter
Thermal resistance junction-to-case
Thermal resistance junction-to-ambient
Value
15
Unit
θ
J-C
°C/W
θ
120
J-A
DS12022 - Rev 6
page 5/23
LDL1117
Electrical characteristics
5
Electrical characteristics
TJ = 25 °C, VIN = VOUT + 1 V or 2.6 V, whichever is greater; CIN = 1 μF; COUT = 4.7 μF; IOUT = 10 mA.
Table 4. Electrical characteristics
Symbol
Parameter
Operating input voltage
Turn-on threshold
Hysteresis
Test conditions
Min.
Typ.
Max.
18
Unit
V
V
2.6
IN
2.3
2.4
V
V
UVLO
200
mV
%
I
I
= 10 mA, T = 25 °C
-2
-3
+2
+3
OUT
OUT
J
V
V
accuracy
OUT
OUT
= 10 mA, -40 °C < T < 125°C
%
J
V
+ 1 V (1) ≤ V ≤ 18 V,
OUT
IN
∆V
∆V
V
Line regulation
Load regulation
0.002
5
0.02
15
%/V
OUT
I
I
= 10 mA -40 °C < T < 125 °C
OUT
OUT
J
= 10 mA to 1.2 A,
mV
mV
OUT
- 40 °C < T < 125 °C
J
I
= 1.2 A, V
> 2.5 V
OUT
OUT
Dropout voltage (2)
350
60
600
DROP
- 40°C < T < 125 °C
J
µV
/
RMS
10 Hz to 100 kHz, I
= 100 mA
eN
Output noise voltage
OUT
V
OUT
V
V
= V
+1 V ± V
OUT(NOM) RIPPLE
IN
87
= 0.5 V, f = 120 Hz
= V +1 V ± V
OUT(NOM)
RIPPLE
V
V
IN
RIPPLE
RIPPLE
SVR
Supply voltage rejection
Quiescent current
80
dB
= 0.5 V, f = 1 kHz
= V +1 V ± V
OUT(NOM)
V
V
IN
RIPPLE
RIPPLE
65
= 0.5 V, f = 100 kHz
= 0 mA to 1.2 A, -40 °C < T < 125 °C
I
I
250
500
µA
A
Q
OUT
J
I
Output current
Thermal shutdown
Hysteresis
1.5
2
SC
175
25
T
°C
SHDN
1.
V
= V
+ 1 V or 2.6 V, whichever is greater.
OUT
IN
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 nominal output voltages below 2.5 V.
DS12022 - Rev 6
page 6/23
LDL1117
Application information
6
Application information
6.1
Thermal and short-circuit protections
The LDL1117 is self-protected from short-circuit conditions and overtemperature. When the output load is higher
than the one supported by the device, the output current rises until the limit of typically 2 A is reached. The current
limit value is dependent of the dissipated power, thanks to an additional SOA protection, so that the maximum
power is limited.
The peak current available for a defined drop voltage (VIN-VOUT) is shown in Section 7 .
The thermal protection occurs when the junction temperature reaches typically 175 °C. The IC enters the
shutdown status. As soon as the junction temperature falls again below 150 °C (typ.) the device starts working
again.
In order to calculate the maximum power that the device can dissipate, keeping the junction temperature below
TJ-OP, the following formula is used:
P
=
125 − T
AMB
/ R
THJ − A
(1)
DMAX
PDMAX should be also derated according to the maximum current allowed by the SOA protection.
Input and output capacitor selection
6.2
The LDL1117 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 over the temperature range. The input/output capacitors should
be placed as close as possible to the relative pins. The LDL1117 requires an input capacitor with a minimum value
of 1 μF.
The device is also equipped with a differential thermal protection that avoid damage in case of fast thermal
gradients inside the chip. When the differential thermal protection is activated both channel and the LDO are
switched off. This protection works in auto-retry mode, the device restarts automatically when the thermal
conditions go back into the normal operating region.
This capacitor must be placed as close as possible to the input pin of the device and returned to a clean analog
ground. The control loop of the LDL1117 is designed to work with an output ceramic capacitor. Other type of
capacitors may be used, as long as they meet the requirements of minimum capacitance and equivalent series
resistance (ESR), as shown in Figure 20 and Figure 21.
To assure stability, the output capacitor must maintain its ESR and capacitance in the stable region, over the full
operating temperature range.
The suggested combination of 1 μF input and 4.7 μF output capacitors offers a good compromise among the
stability of the regulator, optimum transient response and total PCB area occupation.
DS12022 - Rev 6
page 7/23
LDL1117
Typical characteristics
7
Typical characteristics
The following plots are referred to the typical application circuit and, unless otherwise noted, at TA = 25 °C.
Figure 4. Output voltage vs. temperature (VIN = 2.6 V,
VOUT = 1.2 V, no load)
Figure 5. Output voltage vs. temperature (VIN = 2.6 V,
VOUT = 1.2 V, 1200 mA)
Figure 6. Output voltage vs. temperature (VIN = 6 V,
VOUT = 5 V, no load)
Figure 7. Output voltage vs. temperature (VIN = 6 V,
VOUT = 5 V, 1200 mA)
DS12022 - Rev 6
page 8/23
LDL1117
Typical characteristics
Figure 8. Line regulation vs. temperature (VIN = 6 to 18 V,
VOUT = 5 V, IOUT = 10 mA)
Figure 9. Line regulation vs. temperature (VIN = 2.5 to
18 V, VOUT = 1.2 V, IOUT = 10 mA)
Figure 10. Load regulation vs. temperature (VIN = 6 V,
VOUT = 5 V, IOUT = 10 to 1200 mA)
Figure 11. Load regulation vs. temperature (VIN = 2.6 V,
VOUT = 1.2 V, IOUT = 10 to 1200 mA)
DS12022 - Rev 6
page 9/23
LDL1117
Typical characteristics
Figure 12. Dropout voltage vs. temperature
Figure 13. Quiescent current vs. temperature (no load)
Figure 14. Quiescent current vs. temperature (600 mA)
Figure 15. Quiescent current vs. temperature (1.2 A)
DS12022 - Rev 6
page 10/23
LDL1117
Typical characteristics
Figure 16. Short-circuit current vs. dropout voltage
(VOUT = 5 V)
Figure 17. Short-circuit current vs. dropout voltage
(VOUT = 1.2 V)
Figure 19. Output noise spectral density (VO = 1.2 V)
Figure 18. SVR vs. frequency
DS12022 - Rev 6
page 11/23
LDL1117
Typical characteristics
Figure 20. Stability plan (VOUT = 5 V)
Figure 21. Stability plan (VOUT = 1.2 V)
Figure 23. Turn-on time (VOUT = 1.2 V)
Figure 22. Turn-on time (VOUT = 5 V)
Figure 25. Line transient (VOUT = 1.2 V)
Figure 24. Line transient (VOUT = 5 V)
DS12022 - Rev 6
page 12/23
LDL1117
Typical characteristics
Figure 27. Load transient (VOUT = 5 V)
Figure 26. Load transient (VOUT = 1.2 V)
DS12022 - Rev 6
page 13/23
LDL1117
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.
8.1
SOT223 package information
Figure 28. SOT223 package outline
DS12022 - Rev 6
page 14/23
LDL1117
SOT223 package information
Table 5. SOT223 mechanical data
mm
Dim.
Min.
Typ.
Max.
1.8
A
A1
B
0.02
0.6
0.1
0.7
3
0.85
3.15
0.35
6.7
B1
c
2.9
0.24
6.3
0.26
6.5
2.3
4.6
3.5
7.0
D
e
e1
E
3.3
6.7
3.7
7.3
10º
H
V
DS12022 - Rev 6
page 15/23
LDL1117
SOT223 packing information
8.2
SOT223 packing information
Table 6. SOT223 tape and reel mechanical data
Tape
Reel
mm
Typ.
6.85
7.40
1.90
5.50
1.75
12
mm
Dim.
Dim.
Min.
6.75
7.30
1.80
5.40
1.65
11.7
1.90
3.90
7.90
0.25
1.50
1.50
Max.
6.95
7.50
2.00
5.60
1.85
12.3
2.10
4.10
8.10
0.35
1.60
1.70
Min.
Max.
A0
B0
K0
F
A
180
N
60
W1
W2
W3
12.4
18.4
15.4
E
11.9
W
P2
P0
P1
T
2
Basequantity pcs
Bulk quantity pcs
1000
1000
4
8
0.30
1.55
1.60
D
D1
Figure 29. Tape for SOT223 (dimensions are in mm)
DS12022 - Rev 6
page 16/23
LDL1117
SOT223 packing information
Figure 30. Reel for SOT223 (dimensions are in mm)
Figure 31. SOT223 reel oriented
User Direction of feed
DS12022 - Rev 6
page 17/23
LDL1117
Ordering information
9
Ordering information
Table 7. Order code
Part number
Marking
Order code
LDL1117S12R
LDL1117S15R
LDL1117S18R
LDL1117S25R
LDL1117S30R
LDL1117S33R
LDL1117S50R
Output voltage (V)
LL12
LL15
LL18
LL25
LL30
LL33
LL50
1.185
1.5
1.8
LDL1117
2.5
3.0
3.3
5.0
DS12022 - Rev 6
page 18/23
LDL1117
Revision history
Table 8. Document revision history
Date
Revision
Changes
27-Feb-2017
30-Mar-2017
1
Initial release.
Updated features in cover page and Section 9: "Ordering information". Minor text
changes.
2
04-Jul-2017
04-Mar-2020
24-Mar-2020
03-Apr-2020
3
4
5
6
In Table3: "Thermal data": - thermal data values changed. Minor textchanges.
Updated Figure 28. SOT223 package outline.
Updated Figure 12.
Added Section 8.2 SOT223 packing information.
DS12022 - Rev 6
page 19/23
LDL1117
Contents
Contents
1
2
3
4
5
6
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Application information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
6.1
6.2
Thermal and short-circuit protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7
8
Typical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
8.1
8.2
SOT223 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
SOT223 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
9
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
DS12022 - Rev 6
page 20/23
LDL1117
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SOT223 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SOT223 tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DS12022 - Rev 6
page 21/23
LDL1117
List of figures
List of figures
Figure 1.
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.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Output voltage vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, no load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output voltage vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, 1200 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output voltage vs. temperature (VIN = 6 V, VOUT = 5 V, no load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output voltage vs. temperature (VIN = 6 V, VOUT = 5 V, 1200 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Line regulation vs. temperature (VIN = 6 to 18 V, VOUT = 5 V, IOUT = 10 mA). . . . . . . . . . . . . . . . . . . . . . . . . . 9
Line regulation vs. temperature (VIN = 2.5 to 18 V, VOUT = 1.2 V, IOUT = 10 mA) . . . . . . . . . . . . . . . . . . . . . . . 9
Load regulation vs. temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 to 1200 mA) . . . . . . . . . . . . . . . . . . . . . . . 9
Load regulation vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, IOUT = 10 to 1200 mA). . . . . . . . . . . . . . . . . . . . . 9
Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Quiescent current vs. temperature (no load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Quiescent current vs. temperature (600 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Quiescent current vs. temperature (1.2 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Short-circuit current vs. dropout voltage (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Short-circuit current vs. dropout voltage (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SVR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Output noise spectral density (VO = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Stability plan (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Stability plan (VOUT = 1.2 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Turn-on time (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Turn-on time (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Line transient (VOUT = 5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Line transient (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Load transient (VOUT = 1.2 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Load transient (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SOT223 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Tape for SOT223 (dimensions are in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Reel for SOT223 (dimensions are in mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SOT223 reel oriented . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DS12022 - Rev 6
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LDL1117
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DS12022 - Rev 6
page 23/23
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