Page 1
Low drop fixed and adjustable positive voltage regulators
Feature summary
■ Low dropout voltage (1V TYP.)
■ 2.85V Device performances are suitable for
SCSI-2 active termination
■ Output current up to 800 mA
■ Fixed output voltage of: 1.2V, 1.8V, 2.5V,
2.85V, 3.0V, 3.3V, 5.0V
■ Adjustable version availability (V
■ Internal current and thermal limit
■ Available in ± 1% (at 25°C) and 2% in full
temperature range
■ Supply voltage rejection: 75dB (typ.)
Description
The LD1117 is a LOW DROP Voltage Regulator
able to provide up to 800mA of Output Current,
available even in adjustable version (Vref=1.25V).
Concerning fixed versions, are offered the
following Output Voltages: 1.2V,1.8V,2.5V,2.85V,
3.0V 3.3V and 5.0V. The 2.85V type is ideal for
SCSI-2 lines active termination. The device is
supplied in: SOT-223, DPAK, SO-8 and TO-220.
Block diagram
=1.25V)
rel
LD1117 series
DPAK
TO-220
SOT-223
The SOT-223 and DPAK surface mount packages
optimize the thermal characteristics even offering
a relevant space saving effect. 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
December 2006 Rev. 20 1/38
www.st.com
38
Page 2
LD1117 series
Contents
1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6 LD1117 Adjustable: Application note . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2/38
Page 3
LD1117 series Pin configuration
1 Pin configuration
Figure 1. Pin connections (top view)
SOT-223
DPAK
Note: The TAB is connected to the V
OUT
SO-8
TO-220
.
3/38
Page 4
Maximum ratings LD1117 series
2 Maximum ratings
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
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
P
T
V
STG
T
IN
TOT
OP
Table 2. Thermal Data
Symbol Parameter SOT-223 SO-8 DPAK TO-220 Unit
R
R
thJC
thJA
Thermal Resistance Junction-case 15 20 8 3 °C/W
Thermal Resistance Junction-ambient 50 °C/W
4/38
Page 5
LD1117 series Schematic application
3 Schematic application
Figure 2. Application circuit (for 1.2V)
Figure 3. Application circuit (for other fixed output voltages)
5/38
Page 6
Electrical characteristics LD1117 series
4 Electrical characteristics
Table 3. Electrical characteristics of LD1117#12
(refer to the test circuits, T
pins, unless otherwise specified).
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 3.2 V, IO = 10 mA, TJ = 25°C 1.188 1.20 1.212 V
V
O
Reference voltage
V
O
∆V
∆V
∆V
∆V
∆I
I
O(min)
SVR Supply voltage rejection
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
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
I
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
O
eN Output noise (%V
V
Dropout voltage
d
) B =10Hz to 10KHz, TJ = 25°C 0.003 %
O
= 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
= 10 to 800 mA
I
O
I
= 40 mA, f = 120Hz, TJ = 25°C
O
V
- VO = 3 V, V
in
= 100 mA 1 1.1
I
O
= 500 mA 1.05 1.15
O
ripple
= 1 V
PP
1.140 1.20 1.260 V
15µA
60 75 dB
IO = 800 mA 1.10 1.2
VI
6/38
Thermal regulation T
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
Page 7
LD1117 series Electrical characteristics
Table 4. Electrical characteristics of LD1117#18
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 3.8 V, IO = 10 mA, TJ = 25°C 1.78 1.8 1.82 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 3.3 to 8 V 1.76 1.84 V
O
∆V
∆V
∆V
∆V
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
V
Operating input voltage IO = 100 mA 10 V
in
I
Quiescent current Vin ≤ 8 V 5 10 mA
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 Ta = 25°C, 30ms Pulse 0.01 0.1 %/W
= 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
= 100 mA 1 1.1
I
O
= 500 mA 1.05 1.15
O
I
= 800 mA 1.10 1.2
O
ripple
= 1 V
PP
60 75 dB
VI
Table 5. Electrical characteristics of LD1117#25
(refer to the test circuits, T
Symbol Parameter Test 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
V
Output voltage IO = 0 to 800 mA, Vin = 3.9 to 10 V 2.45 2.55 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 10 V 5 10 mA
d
I
Output current Vin = 7.5 VTJ = 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
IO = 40 mA, f = 120Hz, TJ = 25°C
= 5.5 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA 1 1.1
I
= 800 mA 1.10 1.2
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA 1.05 1.15
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Electrical characteristics LD1117 series
Table 6. Electrical characteristics of LD1117#28
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 4.85 V, IO = 10 mA, TJ = 25°C 2.82 2.85 2.88 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 4.25 to 10 V 2.79 2.91 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 10 V 5 10 mA
d
I
Output current Vin = 7.85 VTJ = 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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 5.85 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA 1 1.1
I
= 800 mA 1.10 1.2
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA 1.05 1.15
8/38
Page 9
LD1117 series Electrical characteristics
Table 7. Electrical characteristics of LD1117#30
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 5 V, IO = 10 mA, TJ = 25°C 2.97 3 3.03 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 4.5 to 10 V 2.94 3.06 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 12 V 5 10 mA
d
I
Output current Vin = 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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 6 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA 1 1.1
I
= 800 mA 1.10 1.2
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA 1.05 1.15
9/38
Page 10
Electrical characteristics LD1117 series
Table 8. Electrical characteristics of LD1117#33
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 5.3 V, IO = 10 mA, TJ = 25°C 3.267 3.3 3.333 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 4.75 to 10 V 3.235 3.365 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 15 V 5 10 mA
d
I
Output current Vin = 8.3 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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 6.3 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA 1 1.1
I
= 800 mA 1.10 1.2
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA 1.05 1.15
10/38
Page 11
LD1117 series Electrical characteristics
Table 9. Electrical characteristics of LD1117#50
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 7 V, IO = 10 mA, TJ = 25°C 4.95 5 5.05 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 6.5 to 15 V 4.9 5.1 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 15 V 5 10 mA
d
I
Output current Vin = 10 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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 8 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA 1 1.1
I
= 800 mA 1.10 1.2
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA 1.05 1.15
11/38
Page 12
Electrical characteristics LD1117 series
Table 10. Electrical characteristics of LD1117 (Adjustable)
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
= 0 to 125°C, CO = 10 µF, unless otherwise specified).
J
V
V
∆V
∆V
∆V
∆V
∆I
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
I
Adjustment pin current Vin ≤ 15 V 60 120 µA
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
I
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
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
V
- VO = 3 V, V
in
= 100 mA 1 1.1
I
O
= 500 mA 1.05 1.15
O
ripple
= 1 V
PP
60 75 dB
IO = 800 mA 1.10 1.2
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VI
12/38
Page 13
LD1117 series Electrical characteristics
Table 11. 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 Min. Typ. Max. Unit
V
V
∆V
∆V
∆V
∆V
∆I
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
V
Operating input voltage 15 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
I
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
O
eN Output noise (%V
) B =10Hz to 10KHz, TJ = 25°C 0.003 %
O
SVR Supply voltage rejection
V
Dropout voltage
d
= 10 to 800 mA, Vin - VO= 1.4 to
I
O
10 V
- VO = 1.4 to 10 V
V
in
= 10 to 800 mA
I
O
I
= 40 mA, f = 120Hz, TJ = 25°C
O
V
- VO = 3 V, V
in
= 100 mA, TJ = 0 to 125°C 1 1.1
I
O
= 500 mA, TJ = 0 to 125°C 1.05 1.2
O
ripple
= 1 V
PP
1.120 1.20 1.280 V
15µA
60 75 dB
IO = 800 mA, TJ = 0 to 125°C 1.10 1.3
VI
Thermal regulation T
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
13/38
Page 14
Electrical characteristics LD1117 series
Table 12. Electrical characteristics of LD1117#18C
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 3.8 V, IO = 10 mA, TJ = 25°C 1.76 1.8 1.84 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 3.9 to 10 V 1.73 1.87 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 8 V 5 10 mA
d
I
Output current Vin = 6.8 VTJ = 25°C 800 950 1300 mA
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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 5.5 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA, TJ = 0 to 125°C 1 1.1
I
= 800 mA, TJ = 0 to 125°C 1.10 1.2
O
IO = 100 mA 1.1
I
= 800 mA 1.3
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA, TJ = 0 to 125°C 1.05 1.15
VIO = 500 mA 1.2
14/38
Page 15
LD1117 series Electrical characteristics
Table 13. Electrical characteristics of LD1117#25C
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 4.5 V, IO = 10 mA, TJ = 25°C 2.45 2.5 2.55 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 3.9 to 10 V 2.4 2.6 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 10 V 5 10 mA
d
I
Output current Vin = 7.5 VTJ = 25°C 800 950 1300 mA
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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 5.5 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA, TJ = 0 to 125°C 1 1.1
I
= 800 mA, TJ = 0 to 125°C 1.10 1.2
O
IO = 100 mA 1.1
I
= 800 mA 1.3
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA, TJ = 0 to 125°C 1.05 1.15
VIO = 500 mA 1.2
15/38
Page 16
Electrical characteristics LD1117 series
Table 14. Electrical characteristics of LD1117#30C
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 5 V, IO = 10 mA, TJ = 25°C 2.94 3 3.06 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 4.5 to 10 V 2.88 3.12 V
O
∆V
∆V
∆V
∆V
SVR Supply voltage rejection
Line regulation Vin = 4.5 to 12 V, IO = 0 mA 1 30 mV
O
Load regulation Vin = 4.5 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
I
Quiescent current Vin ≤ 12 V 5 10 mA
d
I
Output current Vin = 8 V, TJ = 25°C 800 950 1300 mA
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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 6 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA, TJ = 0 to 125°C 1 1.1
I
= 800 mA, TJ = 0 to 125°C 1.10 1.2
O
IO = 100 mA 1.1
I
= 800 mA 1.3
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA, TJ = 0 to 125°C 1.05 1.15
VIO = 500 mA 1.2
16/38
Page 17
LD1117 series Electrical characteristics
Table 15. Electrical characteristics of LD1117#33C
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 5.3 V, IO = 10 mA, TJ = 25°C 3.24 3.3 3.36 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 4.75 to 10 V 3.16 3.44 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 15 V 5 10 mA
d
I
Output current Vin = 8.3 V, TJ = 25°C 800 950 1300 mA
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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 6.3 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA, TJ = 0 to 125°C 1 1.1
I
= 800 mA, TJ = 0 to 125°C 1.10 1.2
O
IO = 100 mA 1.1
I
= 800 mA 1.3
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA, TJ = 0 to 125°C 1.05 1.15
VIO = 500 mA 1.2
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Page 18
Electrical characteristics LD1117 series
Table 16. Electrical characteristics of LD1117#50C
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
Output voltage Vin = 7 V, IO = 10 mA, TJ = 25°C 4.9 5 5.1 V
V
O
V
Output voltage IO = 0 to 800 mA, Vin = 6.5 to 15 V 4.8 5.2 V
O
∆V
∆V
∆V
∆V
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
I
Quiescent current Vin ≤ 15 V 5 10 mA
d
I
Output current Vin = 10 V, TJ = 25°C 800 950 1300 mA
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
I
= 40 mA, f = 120Hz, TJ = 25°C
O
= 8 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA, TJ = 0 to 125°C 1 1.1
I
= 800 mA, TJ = 0 to 125°C 1.10 1.2
O
IO = 100 mA 1.1
I
= 800 mA 1.3
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA, TJ = 0 to 125°C 1.05 1.15
VIO = 500 mA 1.2
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Page 19
LD1117 series Electrical characteristics
Table 17. Electrical characteristics of LD1117C (Adjustable)
(refer to the test circuits, T
Symbol Parameter Test Min. Typ. Max. Unit
= -40 to 125°C, CO = 10 µF, unless otherwise specified).
J
V
V
∆V
∆V
∆V
∆V
∆I
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
I
Adjustment pin current Vin ≤ 15 V 60 120 µA
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
I
Output current Vin - VO = 5 V, TJ = 25°C 800 950 1300 mA
O
eN Output noise (%V
) B =10Hz to 10KHz, TJ = 25°C 0.003 %
O
SVR Supply voltage rejection
Dropout voltage
V
d
V
Dropout voltage
d
Thermal regulation T
IO = 40 mA, f = 120Hz, TJ = 25°C
- VO = 3 V, V
V
in
ripple
= 1 V
PP
60 75 dB
IO = 100 mA, TJ = 0 to 125°C 1 1.1
I
= 800 mA, TJ = 0 to 125°C 1.10 1.2
O
IO = 100 mA 1.1
I
= 800 mA 1.3
O
= 25°C, 30ms Pulse 0.01 0.1 %/W
a
VIO = 500 mA, TJ = 0 to 125°C 1.05 1.15
VIO = 500 mA 1.2
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Page 20
Typical application LD1117 series
5 Typical application
Figure 4. Negative supply
Figure 5. Active terminator for SCSI-2 BUS
Figure 6. Circuit for increasing output voltage
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Page 21
LD1117 series Typical application
Figure 7. Voltage Regulator With Reference
Figure 8. Battery backed-up regulated supply
21/38
Page 22
Typical application LD1117 series
Figure 9. Post-regulated dual supply
22/38
Page 23
LD1117 series LD1117 Adjustable: Application note
6 LD1117 Adjustable: Application note
The LD1117 Adjustable has a thermal stabilized 1.25±0.012V reference voltage between
the OUT and ADJ pins. I
is 60µA typ. (120µA max.) and ∆I
ADJ
R1 is normally fixed to 120W. From figure 10 we obtain:
V
I
ADJ
OUT
= V
.
REF
+ R2 (I
+IR1) = V
ADJ
REF
+ R2 (I
In normal application R2 value is in the range of few kohm, so the R2 x I
not be considered in the V
V
OUT
= V
(1 + R2 / R1).
REF
calculation; then the above expression becomes:
OUT
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 10µF electrolytic capacitor
placed in parallel to the R2 resistor (see Fig. 11).
Figure 10. Adjustable output voltage application
ADJ
+V
REF
/R1) = V
is 1µA typ. (5µA max.).
ADJ
(1 + R2 / R1) + R2 x
REF
product could
ADJ
Figure 11. Adjustable output voltage application with improved ripple rejection
23/38
Page 24
Package mechanical data LD1117 series
7 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.
24/38
Page 25
LD1117 series Package mechanical data
SOT-223 MECHANICAL DATA
mm. mils
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
A 1.8 70.9
A1 0.02 0.1 0.8 3.9
B 0.6 0.7 0.85 23.6 27.6 33.5
B1 2.9 3 3.15 114.2 118.1 124.0
c 0.24 0.26 0.35 9.4 10.2 13.8
D 6.3 6.5 6.7 248.0 255.9 263.8
e2.3 90.6
e1 4.6 181.1
E 3.3 3.5 3.7 129.9 137.8 145.7
H 6.7 7 7.3 263.8 275.7 287.5
V 10° 10°
0046067/H
25/38
Page 26
Package mechanical data LD1117 series
SO-8 MECHANICAL DATA
DIM.
A 1.35 1.75 0.053 0.069
A1 0.10 0.25 0.04 0.010
A2 1.10 1.65 0.043 0.065
B 0.33 0.51 0.013 0.020
C 0.19 0.25 0.007 0.010
D 4.80 5.00 0.189 0.197
E 3.80 4.00 0.150 0.157
e 1.27 0.050
H 5.80 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 ˚ (max.)
ddd 0.1 0.04
MIN. TYP MAX. MIN. TYP. MAX.
mm. inch
8
26/38
0016023/C
Page 27
LD1117 series Package mechanical data
Figure 12. DRAWING DIMENSION DPAK (TYPE STD-ST)
0068772/G
27/38
Page 28
Package mechanical data LD1117 series
Figure 13. DRAWING DIMENSION DPAK (TYPE FUJITSU-SUBCON.)
28/38
0068772/G
Page 29
LD1117 series Package mechanical data
Figure 14. DRAWING DIMENSION DPAK (TYPE IDS-SUBCON.)
0068772/G
29/38
Page 30
Package mechanical data LD1117 series
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
L1 2.80 2.50 2.65
mm. mm. mm.
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.
30/38
Page 31
LD1117 series Package mechanical data
Figure 15. DPAK FOOTPRINT RECOMMENDED DATA
Table 19. FOOTPRINT DATA
VALUES
mm. inch.
A 6.70 0.264
B6.700.64
C1.80.070
D3.00.118
E 1.60 0.063
F 2.30 0.091
G 2.30 0.091
31/38
Page 32
Package mechanical data LD1117 series
TO-220 MECHANICAL DAT
DIM.
A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107
D1 1.27 0.050
E 0.49 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
G 4.95 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
L9 3.5 3.93 0.137 0.154
DIA. 3.75 3.85 0.147 0.151
MIN. TYP MAX. MIN. TYP. MAX.
mm. inch
A
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P011C
Page 33
LD1117 series Package mechanical data
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
D20.2 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
P 7.9 8.0 8.1 0.311 0.315 0.319
mm. inch
33/38
Page 34
Package mechanical data LD1117 series
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
N 60 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 0.090
Po 3.9 4.1 0.153 0.161
P 7.9 8.1 0.311 0.319
34/38
Page 35
LD1117 series Package mechanical data
Tape & Reel DPAK-PPAK 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
N 60 2.362
T 22.4 0.882
Ao 6.80 6.90 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
P 7.9 8.0 8.1 0.311 0.315 0.319
mm. inch
35/38
Page 36
Order code LD1117 series
8 Order code
Table 20. Order code
Part numbers
SOT-223 SO-8 DPAK DPAK (T&R) TO-220
LD1117S12TR LD1117D12TR (*) LD1117DT12 (*) LD1117DT12TR LD1117V12 (*) 1.2 V
LD1117S12CTR (*) LD1117D12CTR (*) LD1117DT12C (*) LD1117V12C (*) 1.2 V
LD1117S18TR LD1117D18TR (*) LD1117DT18 LD1117DT18TR LD1117V18 1.8 V
LD1117S18CTR (*) LD1117D18CTR (*) LD1117DT18C LD1117DT18CTR LD1117V18C (*) 1.8 V
LD1117S25TR LD1117D25TR (*) LD1117DT25 LD1117DT25TR LD1117V25 2.5 V
LD1117S25CTR LD1117D25CTR (*) LD1117DT25C LD1117DT25CTR LD1117V25C 2.5 V
LD1117S28TR LD1117D28TR (*) LD1117DT28TR 2.85 V
LD1117S30TR LD1117D30TR (*) 3 V
LD1117S33TR LD1117D33TR LD1117DT33 LD1117DT33TR LD1117V33 3.3 V
LD1117S33CTR LD1117D33CTR LD1117DT33C LD1117DT33CTR LD1117V33C 3.3 V
LD1117S50TR LD1117D50TR LD1117DT50 LD1117DT50TR LD1117V50 5 V
LD1117S50CTR LD1117D50CTR (*) LD1117DT50C LD1117DT50CTR 5 V
LD1117STR LD1117DTR (*) LD1117DT LD1117DTTR LD1117V
LD1117SC-R LD1117DC-R (*) LD1117DTC (*) LD1117DTC-R LD1117VC (*)
Output
voltage
ADJ FROM
1.25 TO 15V
ADJ FROM
1.25 TO 15V
36/38
(*) Available on request.
Page 37
LD1117 series Revision history
9 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.
Reference Voltage on Table 12.
ref
on Table 2 has been updated.
op
37/38
Page 38
LD1117 series
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