Low drop fixed and adjustable positive voltage regulators
Features
■ Low dropout voltage (1 V typ.)
■ 2.85 V Device performances are suitable for
SCSI-2 active termination
■ Output current up to 800 mA
■ Fixed output voltage of: 1.2 V, 1.8 V, 2.5 V,
2.85 V, 3.0 V, 3.3 V, 5.0 V
■ Adjustable version availability (V
■ Internal current and thermal limit
■ Available in ± 1% (at 25 °C) and 2% in full
temperature range
■ Supply voltage rejection: 75 dB (typ.)
Description
The LD1117 is a LOW DROP Voltage Regulator
able to provide up to 800 mA of Output Current,
available even in adjustable version (V
Concerning fixed versions, are offered the
following Output Voltages: 1.2 V, 1.8 V, 2.5 V, 2.85
V, 3.0 V, 3.3 V and 5.0 V. The 2.85 V type is ideal
for SCSI-2 lines active termination. The device is
supplied in: SOT-223, DPAK, SO-8 and TO-220.
The SOT-223 and DPAK surface mount packages
optimize the thermal characteristics even offering
a relevant space saving effect.
= 1.25 V)
ref
=1.25 V).
ref
LD1117xx
DPAK
TO-220
SOT-223
High efficiency is assured by NPN pass transistor.
In fact in this case, unlike than PNP one, the
quiescent current flows mostly into the load. Only
a very common 10µF minimum capacitor is
needed for stability. On chip trimming allows the
regulator to reach a very tight output voltage
tolerance, within ± 1% at 25°C. The
ADJUSTABLE LD1117 is pin to pin compatible
with the other standard. Adjustable voltage
regulators maintaining the better performances in
terms of drop and tolerance.
SO-8
Table 1. Device summary
Part numbers
LD1117XX12 LD1117XX25C LD1117XX50
LD1117XX12C LD1117XX28 LD1117XX50C
LD1117XX18 LD1117XX30 LD1117XX
LD1117XX18C LD1117XX33 LD1117XXC
LD1117XX25 LD1117XX33C
November 2007 Rev 22 1/41
www.st.com
41
Contents LD1117xx
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 LD1117 adjustable: application note . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2/41
LD1117xx List of figures
List of figures
Figure 2. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Application circuit (for 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4. Application circuit (for other fixed output voltages) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5. Negative supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 6. Active terminator for SCSI-2 BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 7. Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 8. Voltage regulator with reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 9. Battery backed-up regulated supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 10. Post-regulated dual supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 11. Adjustable output voltage application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 12. Adjustable output voltage application with improved ripple rejection . . . . . . . . . . . . . . . . . 26
Figure 13. Drawing dimension DPAK (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 14. Drawing dimension DPAK (type FUJITSU-SUBCON.). . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 15. Drawing dimension DPAK (type IDS-SUBCON.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 16. DPAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3/41
List of tables LD1117xx
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Electrical characteristics of LD1117#12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Electrical characteristics of LD1117#18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 6. Electrical characteristics of LD1117#25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 7. Electrical characteristics of LD1117#28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 8. Electrical characteristics of LD1117#30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 9. Electrical characteristics of LD1117#33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 10. Electrical characteristics of LD1117#50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 11. Electrical characteristics of LD1117 (adjustable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 12. Electrical characteristics of LD1117#12C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 13. Electrical characteristics of LD1117#18C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 14. Electrical characteristics of LD1117#25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 15. Electrical characteristics of LD1117#33C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 16. Electrical characteristics of LD1117#50C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 17. Electrical characteristics of LD1117C (adjustable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 18. DPAK mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 19. Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 20. Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 21. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4/41
LD1117xx Diagram
1 Diagram
Figure 1. Block diagram
5/41
Pin configuration LD1117xx
2 Pin configuration
Figure 2. Pin connections (top view)
SOT-223
DPAK
Note: The TAB is connected to the V
OUT
SO-8
TO-220
.
6/41
LD1117xx Maximum ratings
3 Maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
P
T
V
STG
T
IN
TOT
OP
DC input voltage 15 V
Power dissipation 12 W
Storage temperature range -40 to +150 °C
for C Version -40 to +150 °C
Operating junction temperature range
for standard Version 0 to +150 °C
Table 3. Thermal data
Symbol Parameter SOT-223 SO-8 DPAK TO-220 Unit
R
R
Thermal resistance junction-case 15 20 8 3 °C/W
thJC
Thermal resistance junction-ambient 50 °C/W
thJA
7/41
Schematic application LD1117xx
4 Schematic application
Figure 3. Application circuit (for 1.2 V)
Figure 4. Application circuit (for other fixed output voltages)
8/41
LD1117xx Electrical characteristics
5 Electrical characteristics
Table 4. Electrical characteristics of LD1117#12
(refer to the test circuits, T
pins, unless otherwise specified).
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 3.2 V, IO = 10 mA, TJ = 25°C 1.188 1.20 1.212 V
O
V
Reference voltage
O
ΔV
ΔV
ΔV
ΔV
ΔI
Line regulation Vin - VO = 1.5 to 13.75 V, IO = 10 mA 0.035 0.2 %
O
Load regulation Vin - VO = 3 V, IO = 10 to 800 mA 0.1 0.4 %
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
Operating input voltage 15 V
V
in
I
Adjustment pin current Vin ≤ 15 V 60 120 µA
adj
Adjustment pin current change
adj
= 0 to 125 °C, CO = 10 µF, R = 120 Ω between GND and OUT
J
= 10 to 800 mA
I
O
- VO= 1.4 to 10 V
V
in
- VO = 1.4 to 10 V
V
in
IO = 10 to 800 mA
1.140 1.20 1.260 V
15µA
I
O(min)
Minimum load current Vin = 15 V 2 5 mA
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise (%V
) B =10Hz to 10kHz, TJ = 25°C 0.003 %
O
SVR Supply voltage rejection
V
Dropout voltage
d
Thermal regulation T
I
= 40 mA, f = 120Hz, TJ = 25°C
O
Vin - VO = 3 V, V
= 100 mA 1 1.1
I
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
9/41
Electrical characteristics LD1117xx
Table 5. Electrical characteristics of LD1117#18
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 3.8 V, IO = 10 mA, TJ = 25°C 1.78 1.8 1.82 V
O
Output voltage IO = 0 to 800 mA, Vin = 3.3 to 8 V 1.76 1.84 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 3.3 to 8 V, IO = 0 mA 1 6 mV
O
Load regulation Vin = 3.3 V, IO = 0 to 800 mA 1 10 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
Operating input voltage IO = 100 mA 10 V
V
in
Quiescent current Vin ≤ 8 V 5 10 mA
I
d
I
Output current Vin = 6.8 V, TJ = 25°C 800 950 1300 mA
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
Thermal regulation T
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
= 5.5 V, V
V
in
I
= 100 mA 1 1.1
O
= 500 mA 1.05 1.15
O
I
= 800 mA 1.10 1.2
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
10/41
LD1117xx Electrical characteristics
Table 6. Electrical characteristics of LD1117#25
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 4.5 V, IO = 10 mA, TJ = 25°C 2.475 2.5 2.525 V
O
Output voltage IO = 0 to 800 mA, Vin = 3.9 to 10 V 2.45 2.55 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 3.9 to 10 V, IO = 0 mA 1 6 mV
O
Load regulation Vin = 3.9 V, IO = 0 to 800 mA 1 10 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 10 V 5 10 mA
I
d
Output current Vin = 7.5 VTJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
Thermal regulation T
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 5.5 V, V
I
= 100 mA 1 1.1
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
11/41
Electrical characteristics LD1117xx
Table 7. Electrical characteristics of LD1117#28
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 4.85 V, IO = 10 mA, TJ = 25°C 2.82 2.85 2.88 V
O
Output voltage IO = 0 to 800 mA, Vin = 4.25 to 10 V 2.79 2.91 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 4.25 to 10 V, IO = 0 mA 1 6 mV
O
Load regulation Vin = 4.25 V, IO = 0 to 800 mA 1 10 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 10 V 5 10 mA
I
d
Output current Vin = 7.85 VTJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
Thermal regulation T
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 5.85 V, V
I
= 100 mA 1 1.1
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
12/41
LD1117xx Electrical characteristics
Table 8. Electrical characteristics of LD1117#30
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 5 V, IO = 10 mA, TJ = 25°C 2.97 3 3.03 V
O
Output voltage IO = 0 to 800 mA, Vin = 4.5 to 10 V 2.94 3.06 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 4.5 to 12 V, IO = 0 mA 1 6 mV
O
Load regulation Vin = 4.5 V, IO = 0 to 800 mA 1 10 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 12 V 5 10 mA
I
d
Output current Vin = 8 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz,T
Dropout voltage
V
d
Thermal regulation T
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µF
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 6 V, V
I
= 100 mA 1 1.1
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
13/41
Electrical characteristics LD1117xx
Table 9. Electrical characteristics of LD1117#33
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 5.3 V, IO = 10 mA, TJ = 25°C 3.267 3.3 3.333 V
O
Output voltage IO = 0 to 800 mA, Vin = 4.75 to 10 V 3.235 3.365 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 4.75 to 15 V, IO = 0 mA 1 6 mV
O
Load regulation Vin = 4.75 V, IO = 0 to 800 mA 1 10 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 15 V 5 10 mA
I
d
Output current Vin = 8.3 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
Thermal regulation T
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 6.3 V, V
I
= 100 mA 1 1.1
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
14/41
LD1117xx Electrical characteristics
Table 10. Electrical characteristics of LD1117#50
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 7 V, IO = 10 mA, TJ = 25°C 4.95 5 5.05 V
O
Output voltage IO = 0 to 800 mA, Vin = 6.5 to 15 V 4.9 5.1 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 6.5 to 15 V, IO = 0 mA 1 10 mV
O
Load regulation Vin = 6.5 V, IO = 0 to 800 mA 1 15 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 15 V 5 10 mA
I
d
Output current Vin = 10 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
Thermal regulation T
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 8 V, V
I
= 100 mA 1 1.1
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
15/41
Electrical characteristics LD1117xx
Table 11. Electrical characteristics of LD1117 (adjustable)
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
= 0 to 125 °C, CO = 10 µF, unless otherwise specified).
J
V
V
ΔV
ΔV
ΔV
ΔV
ΔI
I
O(min)
Reference voltage Vin - VO = 2 V, IO = 10 mA, TJ = 25°C 1.238 1.25 1.262 V
ref
Reference voltage IO = 10 to 800 mA, Vin - VO = 1.4 to 10 V 1.225 1.275 V
ref
Line regulation Vin - VO = 1.5 to 13.75 V, IO = 10 mA 0.035 0.2 %
O
Load regulation Vin - VO = 3 V, IO = 10 to 800 mA 0.1 0.4 %
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage 15 V
in
Adjustment pin current Vin ≤ 15 V 60 120 µA
I
adj
Adjustment pin current change Vin - VO = 1.4 to 10 V, IO = 10 to 800 mA 1 5 µA
adj
Minimum load current Vin = 15 V 2 5 mA
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise (%V
) B =10Hz to 10kHz, TJ = 25°C 0.003 %
O
SVR Supply voltage rejection
V
Dropout voltage
d
Thermal regulation T
I
= 40 mA, f = 120Hz, TJ = 25°C
O
Vin - VO = 3 V, V
= 100 mA 1 1.1
I
O
= 500 mA 1.05 1.15
O
= 800 mA 1.10 1.2
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
16/41
LD1117xx Electrical characteristics
Table 12. Electrical characteristics of LD1117#12C
(refer to the test circuits, T
= 0 to 125 °C, CO = 10 µF, R = 120 Ω between GND and OUT
J
pins, unless otherwise specified).
Symbol Parameter Test condition Min. Typ. Max. Unit
V
V
ΔV
ΔV
ΔV
ΔV
ΔI
I
O(min)
Reference voltage Vin - VO= 2V, IO = 10 mA, TJ = 25°C 1.176 1.20 1.224 V
ref
Reference voltage
ref
Line regulation Vin - VO = 1.5 to 13.75 V, IO = 10 mA 1 %
O
Load regulation Vin - VO = 3 V, IO = 10 to 800 mA 1 %
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
Operating input voltage 15 V
V
in
I
Adjustment pin current Vin ≤ 15 V 60 120 µA
adj
Adjustment pin current change
adj
Minimum load current Vin = 15 V 2 5 mA
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise (%V
) B =10Hz to 10kHz, TJ = 25°C 0.003 %
O
SVR Supply voltage rejection
V
Dropout voltage
d
Thermal regulation T
= 10 to 800 mA, Vin - VO= 1.4 to
I
O
10 V
- VO = 1.4 to 10 V
V
in
IO = 10 to 800 mA
I
= 40 mA, f = 120Hz, TJ = 25°C
O
Vin - VO = 3 V, V
= 100 mA, TJ = 0 to 125°C 1 1.1
I
O
= 500 mA, TJ = 0 to 125°C 1.05 1.2
O
= 800 mA, TJ = 0 to 125°C 1.10 1.3
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
1.120 1.20 1.280 V
15µA
60 75 dB
VI
17/41
Electrical characteristics LD1117xx
Table 13. Electrical characteristics of LD1117#18C
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 3.8 V, IO = 10 mA, TJ = 25°C 1.76 1.8 1.84 V
O
Output voltage IO = 0 to 800 mA, Vin = 3.9 to 10 V 1.73 1.87 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 3.3 to 8 V, IO = 0 mA 1 30 mV
O
Load regulation Vin = 3.3 V, IO = 0 to 800 mA 1 30 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 10 V
in
Quiescent current Vin ≤ 8 V 5 10 mA
I
d
Output current Vin = 6.8 VTJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
V
Dropout voltage
d
Thermal regulation T
= -40 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 5.5 V, V
I
= 100 mA, TJ = 0 to 125°C 1 1.1
O
= 500 mA, TJ = 0 to 125°C 1.05 1.15
O
= 800 mA, TJ = 0 to 125°C 1.10 1.2
I
O
I
= 100 mA 1.1
O
= 500 mA 1.2
O
= 800 mA 1.3
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
VI
18/41
LD1117xx Electrical characteristics
Table 14. Electrical characteristics of LD1117#25C
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 4.5 V, IO = 10 mA, TJ = 25°C 2.45 2.5 2.55 V
O
Output voltage IO = 0 to 800 mA, Vin = 3.9 to 10 V 2.4 2.6 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 3.9 to 10 V, IO = 0 mA 1 30 mV
O
Load regulation Vin = 3.9 V, IO = 0 to 800 mA 1 30 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 10 V 5 10 mA
I
d
Output current Vin = 7.5 VTJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
V
Dropout voltage
d
Thermal regulation T
= -40 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 5.5 V, V
I
= 100 mA, TJ = 0 to 125°C 1 1.1
O
= 500 mA, TJ = 0 to 125°C 1.05 1.15
O
= 800 mA, TJ = 0 to 125°C 1.10 1.2
I
O
I
= 100 mA 1.1
O
= 500 mA 1.2
O
= 800 mA 1.3
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
VI
19/41
Electrical characteristics LD1117xx
Table 15. Electrical characteristics of LD1117#33C
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 5.3 V, IO = 10 mA, TJ = 25°C 3.24 3.3 3.36 V
O
Output voltage IO = 0 to 800 mA, Vin = 4.75 to 10 V 3.16 3.44 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 4.75 to 15 V, IO = 0 mA 1 30 mV
O
Load regulation Vin = 4.75 V, IO = 0 to 800 mA 1 30 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 15 V 5 10 mA
I
d
Output current Vin = 8.3 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
V
Dropout voltage
d
Thermal regulation T
= -40 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 6.3 V, V
I
= 100 mA, TJ = 0 to 125°C 1 1.1
O
= 500 mA, TJ = 0 to 125°C 1.05 1.15
O
= 800 mA, TJ = 0 to 125°C 1.10 1.2
I
O
I
= 100 mA 1.1
O
= 500 mA 1.2
O
= 800 mA 1.3
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
VI
20/41
LD1117xx Electrical characteristics
Table 16. Electrical characteristics of LD1117#50C
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
V
Output voltage Vin = 7 V, IO = 10 mA, TJ = 25°C 4.9 5 5.1 V
O
Output voltage IO = 0 to 800 mA, Vin = 6.5 to 15 V 4.8 5.2 V
V
O
ΔV
ΔV
ΔV
ΔV
SVR Supply voltage rejection
Line regulation Vin = 6.5 to 15 V, IO = 0 mA 1 50 mV
O
Load regulation Vin = 6.5 V, IO = 0 to 800 mA 1 50 mV
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage IO = 100 mA 15 V
in
Quiescent current Vin ≤ 15 V 5 10 mA
I
d
Output current Vin = 10 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise voltage B =10Hz to 10kHz, T
Dropout voltage
V
d
V
Dropout voltage
d
Thermal regulation T
= -40 to 125 °C, CO = 10 µF, unless otherwise specified).
J
= 25°C 100 µV
J
= 40 mA, f = 120Hz, TJ = 25°C
I
O
Vin = 8 V, V
I
= 100 mA, TJ = 0 to 125°C 1 1.1
O
= 500 mA, TJ = 0 to 125°C 1.05 1.15
O
= 800 mA, TJ = 0 to 125°C 1.10 1.2
I
O
I
= 100 mA 1.1
O
= 500 mA 1.2
O
= 800 mA 1.3
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
VI
21/41
Electrical characteristics LD1117xx
Table 17. Electrical characteristics of LD1117C (adjustable)
(refer to the test circuits, T
Symbol Parameter Test condition Min. Typ. Max. Unit
= -40 to 125 °C, CO = 10 µF, unless otherwise specified).
J
V
V
ΔV
ΔV
ΔV
ΔV
ΔI
I
O(min)
Reference voltage Vin - VO = 2 V, IO = 10 mA, TJ = 25°C 1.225 1.25 1.275 V
ref
Reference voltage IO = 10 to 800 mA, Vin - VO= 1.4 to 10 V 1.2 1.3 V
ref
Line regulation Vin - VO = 1.5 to 13.75 V, IO = 10 mA 1 %
O
Load regulation Vin - VO = 3 V, IO = 10 to 800 mA 1 %
O
Temperature stability 0.5 %
O
Long term stability 1000 hrs, TJ = 125°C 0.3 %
O
V
Operating input voltage 15 V
in
Adjustment pin current Vin ≤ 15 V 60 120 µA
I
adj
Adjustment pin current change Vin - VO = 1.4 to 10 V, IO = 10 to 800 mA 1 10 µA
adj
Minimum load current Vin = 15 V 2 5 mA
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
I
O
eN Output noise (%V
) B =10Hz to 10kHz, TJ = 25°C 0.003 %
O
SVR Supply voltage rejection
V
Dropout voltage
d
V
Dropout voltage
d
Thermal regulation T
I
= 40 mA, f = 120Hz, TJ = 25°C
O
Vin - VO = 3 V, V
= 100 mA, TJ = 0 to 125°C 1 1.1
I
O
= 500 mA, TJ = 0 to 125°C 1.05 1.15
O
= 800 mA, TJ = 0 to 125°C 1.10 1.2
I
O
= 100 mA 1.1
I
O
= 500 mA 1.2
O
= 800 mA 1.3
I
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 V
PP
60 75 dB
VI
VI
22/41
LD1117xx Typical application
6 Typical application
Figure 5. Negative supply
Figure 6. Active terminator for SCSI-2 BUS
Figure 7. Circuit for increasing output voltage
23/41
Typical application LD1117xx
Figure 8. Voltage regulator with reference
Figure 9. Battery backed-up regulated supply
24/41
LD1117xx Typical application
Figure 10. Post-regulated dual supply
25/41
LD1117 adjustable: application note LD1117xx
7 LD1117 adjustable: application note
The LD1117 Adjustable has a thermal stabilized 1.25 ± 0.012 V reference voltage between
the OUT and ADJ pins. I
R1 is normally fixed to 120 Ω. From Figure 10 we obtain:
V
I
ADJ
OUT
= V
.
REF
+ R2 (I
ADJ
In normal application R2 value is in the range of few kΩ, so the R2 x I
be considered in the V
V
OUT
= V
(1 + R2 / R1).
REF
In order to have the better load regulation it is important to realize a good Kelvin connection
of R1 and R2 resistors. In particular R1 connection must be realized very close to OUT and
ADJ pin, while R2 ground connection must be placed as near as possible to the negative
Load pin. Ripple rejection can be improved by introducing a 10 µF electrolytic capacitor
placed in parallel to the R2 resistor (see Figure 11).
Figure 11. Adjustable output voltage application
is 60 µA typ. (120 µA max.) and ΔI
ADJ
+IR1) = V
calculation; then the above expression becomes:
OUT
REF
+ R2 (I
ADJ
+V
REF
/R1) = V
ADJ
REF
is 1 µA typ. (5 µA max.).
(1 + R2 / R1) + R2 x
product could not
ADJ
Figure 12. Adjustable output voltage application with improved ripple rejection
26/41
LD1117xx Package mechanical data
8 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
27/41
Package mechanical data LD1117xx
SOT-223 mechanical data
mm. mils.
Dim.
Min. Typ. Max. Min. Typ. Max.
A1.8 70.9
A1 0.02 0.1 0.83.9
B 0.6 0.7 0.8523.6 27.6 33.5
B1 2.933.15 114.2 118.1 124.0
c 0.24 0.26 0.35 9.4 10.2 13.8
D6.3 6.5 6.7 248.0 255.9 263.8
e2.390.6
e1 4.6 181.1
E 3.33.5 3.7 129.9 137.8 145.7
H6.77 7.3 263.8 275.7 287.5
V 10° 10°
28/41
0046067/H
LD1117xx Package mechanical data
SO-8 mechanical data
Dim.
A1.35 1.75 0.053 0.069
A1 0.10 0.25 0.04 0.010
A2 1.10 1.65 0.043 0.065
B0.33 0.51 0.013 0.020
C0.19 0.25 0.007 0.010
D4.80 5.00 0.189 0.197
E 3.80 4.00 0.150 0.157
e 1.27 0.050
H5.80 6.20 0.228 0.244
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
k 8° (max.)
ddd 0.1 0.04
Min. Typ. Max. Min. Typ. Max.
mm. inch.
0016023/C
29/41
Package mechanical data LD1117xx
Figure 13. Drawing dimension DPAK (type STD-ST)
30/41
0068772/G
LD1117xx Package mechanical data
Figure 14. Drawing dimension DPAK (type FUJITSU-SUBCON.)
0068772/G
31/41
Package mechanical data LD1117xx
Figure 15. Drawing dimension DPAK (type IDS-SUBCON.)
32/41
0068772/G
LD1117xx Package mechanical data
Table 18. DPAK mechanical data
TYPE STD-ST TYPE FUJITSU-SUBCON. TYPE IDS-SUBCON
Dim.
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
A 2.20 2.40 2.25 2.30 2.35 2.19 2.38
A1 0.90 1.10 0.96 1.06 0.89 1.14
A2 0.03 0.23 0 0.10 0.03 0.23
b 0.64 0.90 0.76 0.86 0.64 0.88
b4 5.20 5.40 5.28 5.38 5.21 5.46
c 0.45 0.60 0.46 0.56 0.46 0.58
c2 0.48 0.60 0.46 0.56 0.46 0.58
D 6.00 6.20 6.05 6.15 5.97 6.22
D1 5.10 5.27 5.47 5.20
E 6.40 6.60 6.55 6.60 6.65 6.35 6.73
E1 4.70 4.77 4.70
e 2.28 2.23 2.28 2.33 2.28
e1 4.40 4.60 4.51 4.61
H 9.35 10.10 9.90 10.30 9.40 10.42
L 1.00 1.40 1.60 0.90
mm. mm. mm.
L1 2.80 2.50 2.65
L2 0.80 1.03 1.13 0.89 1.27
L4 0.60 1.00 0.70 0.90 0.64 1.02
R 0.20 0.40 0.20
V2 0° 8° 0° 8° 0° 8°
Note: The DPAK package coming from the two subcontractors (Fujitsu and IDS) are fully
compatible with the ST's package suggested footprint.
33/41
Package mechanical data LD1117xx
Figure 16. DPAK footprint recommended data
Table 19. Footprint data
VALUES
mm. inch.
A6.700.264
B 6.70 0.64
C 1.8 0.070
D 3.0 0.118
E1.600.063
F2.300.091
G2.300.091
34/41
LD1117xx Package mechanical data
TO-220 mechanical data
Dim.
A 4.40 4.60 0.173 0.181
C1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107
D1 1.27 0.050
E0.49 0.70 0.019 0.027
F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.067
F2 1.14 1.70 0.044 0.067
G4.95 5.15 0.194 0.203
G1 2.4 2.7 0.094 0.106
H2 10.0 10.40 0.393 0.409
L2 16.4 0.645
L4 13.0 14.0 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.2 6.6 0.244 0.260
L93.5 3.93 0.137 0.154
DIA. 3.75 3.85 0.147 0.151
Min. Typ. Max. Min. Typ. Max.
mm. inch.
P011C
35/41
Package mechanical data LD1117xx
Tape & reel SOT223 mechanical data
Dim.
Min. Typ. Max. Min. Typ. Max.
A 330 12.992
C 12.8 13.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N60 2.362
T 14.4 0.567
Ao 6.73 6.83 6.93 0.265 0.269 0.273
Bo 7.32 7.42 7.52 0.288 0.292 0.296
Ko 1.78 2 0.070 0.078
Po 3.9 4.0 4.1 0.153 0.157 0.161
P7.98.0 8.1 0.311 0.315 0.319
mm. inch.
36/41
LD1117xx Package mechanical data
Tape & reel SO-8 mechanical data
mm. inch.
Dim.
Min. Typ. Max. Min. Typ. Max.
A 330 12.992
C 12.8 13.2 0.504 0.519
D 20.2 0.795
N60 2.362
T 22.4 0.882
Ao 8.1 8.5 0.319 0.335
Bo 5.5 5.9 0.216 0.232
Ko 2.1 2.3 0.082 0.09 0
Po 3.9 4.1 0.153 0.161
P7.98.1 0.311 0.319
37/41
Package mechanical data LD1117xx
Tape & reel DPAK-PPAK mechanical data
Dim.
Min. Typ. Max. Min. Typ. Max.
A 330 12.992
C12.8 13.0 13.2 0.504 0.512 0.519
D 20.2 0.795
N60 2.362
T22.40.882
Ao 6.806.90 7.00 0.268 0.272 0.2.76
Bo 10.40 10.50 10.60 0.409 0.413 0.417
Ko 2.55 2.65 2.75 0.100 0.104 0.105
Po 3.9 4.0 4.1 0.153 0.157 0.161
P7.98.0 8.1 0.311 0.315 0.319
mm. inch.
38/41
LD1117xx Order code
9 Order code
Table 20. Order code
Part numbers
SOT-223 SO-8 DPAK DPAK (T&R) TO-220
LD1117S12TR LD1117D12TR
(1)
LD1117S12CTR
LD1117D12CTR
LD1117S18TR LD1117D18TR
(1)
LD1117S18CTR
LD1117D18CTR
LD1117S25TR LD1117D25TR
LD1117S25CTR LD1117D25CTR
LD1117S28TR LD1117D28TR
LD1117S30TR LD1117D30TR
(1)
LD1117DT12
(1)
LD1117DT12C
(1)
(1)
(1)
(1)
(1)
(1)
(1)
LD1117DT12TR 1.2 V
(1)
LD1117V12C
(1)
LD1117DT18TR LD1117V18 1.8 V
LD1117DT18CTR LD1117V18C
(1)
LD1117DT25TR LD1117V25 2.5 V
LD1117DT25CTR LD1117V25C 2.5 V
LD1117DT28TR 2.85 V
LD1117S33TR LD1117D33TR LD1117DT33TR LD1117V33 3.3 V
LD1117S33CTR LD1117D33CTR LD1117DT33CTR LD1117V33C 3.3 V
LD1117S50TR LD1117DT50TR LD1117V50 5 V
LD1117S50CTR LD1117D50CTR
LD1117STR LD1117DTR
LD1117SC-R LD1117DC-R
1. Available on request.
(1)
(1)
(1)
LD1117DTC
LD1117DT50CTR 5 V
LD1117DTTR LD1117V
(1)
LD1117DTC-R LD1117VC
(1)
ADJ from
1.25 to 15V
ADJ from
1.25 to 15V
Output
voltage
1.2 V
1.8 V
3 V
39/41
Revision history LD1117xx
10 Revision history
Table 21. Document revision history
Date Revision Changes
22-Sep-2004 15 Add new Part Number #12C; Typing Error: Note on table 2.
25-Oct-2004 16 Add V
18-Jul-2005 17 The DPAK Mechanical Data has been updated.
25-Nov-2005 18 The TO220FM Package has been removed.
14-Dec-2005 19 The T
06-Dec-2006 20 DPAK mechanical data has been updated and add footprint data.
05-Apr-2007 21 Order codes updated.
30-Nov-2007 22 Added Ta b l e 1 .
Reference Voltage on Table 12.
ref
on Table 2 has been updated.
op
40/41
LD1117xx
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