UNISONIC TECHNOLOGIES CO., LTD
LD1117/A
LOW DROP FIXED AND
ADJUSTABLE POSITIVE
VOLTAGE REGULATORS
DESCRIPTION
The UTC LD1117/A is a low dropout, 3-terminal positive
voltage regulator designed to provide output current up to
800mA/1A, There are adjustable version (VREF=1.25V) and
various fixed versions.
LINEAR INTEGRATED CIRCUIT
1
1
1
TO-220
TO-220F
1
1
1
TO-263
TO-263-3
1
FEATURES
* Low dropout voltage
* Suitable for SCSI-2 active termination if VOUT set to 2.85V
* Output current up to 0.8A for 1117 and 1.0A for 1117A
* Built-in current limit and over temperature protection
* Low current consumption
* Support MLCC
1
TO-252D
5
TO-262
TO-252
SOT-89
1
SOT-223
SOP-8
HSOP-8
4
12
3
SOT-23-5
(JEDEC TO-236)
1
DFN5060-8
www.unisonic.com.tw
Copyright © 2020 Unisonic Technologies Co., Ltd
1 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ORDERING INFORMATION
Ordering Number
Package
Lead Free
Halogen Free
LD1117L-xx-AA3--
LD1117G-xx-AA3--
SOT-223
LD1117L-xx-AB3--
LD1117G-xx-AB3--
SOT-89
LD1117L-xx-TA3--
LD1117G-xx-TA3--
TO-220
LD1117L-xx-TF3--
LD1117G-xx-TF3--
TO-220F
LD1117L-xx-TN3--
LD1117G-xx-TN3--
TO-252
LD1117L-xx-TND--
LD1117G-xx-TND--
TO-252D
LD1117L-xx-T2Q--
LD1117G-xx-T2Q--
TO-262
LD1117L-xx-TQ2--
LD1117G-xx-TQ2--
TO-263
LD1117L-xx-TQ3--
LD1117G-xx-TQ3--
TO-263-3
LD1117L-xx-AE5-G-
LD1117G-xx-AE5-G-
SOT-23-5
LD1117L-xx-S08-
LD1117G-xx-S08-
SOP-8
LD1117L-xx-SH2-
LD1117G-xx-SH2-
HSOP-8
LD1117L-xx-K08-5060-R LD1117G-xx-K08-5060-R DFN5060-8
Notes: 1. : Current code: Blank: 800mA
A: 1A
2. Pin Assignment: I: VIN O: VOUT
G: GND/ADJ
3. xx: Output Voltage, Refer to Marking Information.
Pin Assignment
Pin Code
A
B
C
D
1
G
O
G
I
2
O
G
I
G
GOINN
GOOIxOOx
GOOIxOOx
GOOIxOOx
Packing
3
I
I
O
O
R: Tape Reel
T: Tube
Tape Reel
(1) R: Tape Reel, T: Tube
LD1117 1 G-xx-AA3- 2 - 3
(2) refer to Pin Assignment
(1)Packing Type
(2)Pin Assignment
(3)Package Type
(4)Output Voltage Code
(5)Green Package
(6)Current Code
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
(3) AA3: SOT-223, AB3: SOT-89, TA3:TO-220,
(3) TF3: TO-220F, TN3: TO-252, TND: TO-252D
(3) T2Q: TO-262, TQ2: TO-263, TQ3: TO-263-3,
(3) AE5: SOT-23-5, S08: SOP-8, SH2: HSOP-8
K08-5060: DFN5060-8
(4) xx: refer to Marking Information
(5) G: Halogen Free and Lead Free, L: Lead Free
(6) Blank: 800mA, A: 1A
2 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
Date Code
SOT-89
Current Code
LD1117
1
Current Code
SOT-223
L: Lead Free
G: Halogen Free
Pin Code
Date Code
2
3
UTC
LD1117□□
XX□□□□□□□
Current Code
Pin Code
Voltage Code
□□
□□□
SOT-23-5
(LD1117)
3
LD1117
Voltage Code
12 :1.2V
15 :1.5V
18 :1.8V
25 :2.5V
2J :2.85V
30 :3.0V
33 :3.3V
36 :3.6V
50 :5.0V
AD :ADJ
2
XX
1
TO-220
TO-220F
TO-252
TO-252D
TO-262
TO-263
TO-263-3
Pin Code
Voltage Code
L: Lead Free
G: Halogen Free
XX
5
L: Lead Free
G: Halogen Free
Lot Code
Date Code
4
Pin Code
7XX
1
2
3
5
SOT-23-5
(LD1117A)
Voltage Code
4
Pin Code
DXX
1
2
Voltage Code
3
8 7 6 5
UTC
SOP-8
HSOP-8
Current Code
Date Code
LD1117
L: Lead Free
G: Halogen Free
Lot Code
Voltage Code
1 2 3 4
UTCC
1117
DFN5060-8
Lot Code
Note: Current code:
Blank: 0.8A
Voltage Code
Current Code
Date Code
A: 1A
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
LD
3 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
GND/
ADJ
1
8
NC
GND/
ADJ
1
8
NC
VOUT
2
7
VOUT
VOUT
2
7
VOUT
VOUT
3
6
VOUT
VOUT
3
6
VOUT
VIN
4
5
NC
VIN
4
5
NC
VOUT
SOP-8/DFN5060-8
HSOP-8
NC
NC
5
4
1
2
3
GND
VOUT
VIN
SOT-23-5
BLOCK DIAGRAM
VIN
Voltage
Reference
+
Current
Reference
Thermal
Compensation
-
Thermal
Protection
VOUT
GND/
ADJ
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
DC Input Voltage
VIN
18
V
Power Dissipation
PD
Internally limited
Junction Temperature
TJ
+150
°C
Operating Temperature (Note 2)
TOPR
-40 ~ +125
°C
Storage temperature
TSTG
-65 ~ +150
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. This condition is only determined from design. It can't be 100% tested in mass production.
RECOMMENDED OPERATING RATINGS
PARAMETER
Input Voltage
SYMBOL
VIN
RATINGS
15
UNIT
V
SYMBOL
RATINGS
165
180
280
150
112
54
64
38
15
50
90
20
12
UNIT
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
C/W
°C/W
°C/W
°C/W
°C/W
4
°C/W
15.6
°C/W
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
SOT-223
SOT-89
SOT-23-5
SOP-8/HSOP-8
TO-252/TO-252D
TO-220
TO-262/TO-263
DFN5060-8
SOT-223
SOT-89
SOT-23-5
SOP-8/HSOP-8
TO-252/TO-252D
TO-220/TO-262
TO-263
DFN5060-8
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
θJA
θJC
5 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(TA=25°C, refer to the test circuits, TJ=0 ~ 125°C, CO=10μF unless otherwise specified)
For LD1117/A-1.2
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Minimum Load Current
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LD1117/A-1.5
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
TEST CONDITIONS
VOUT VIN=3.2V, IOUT=10mA, TJ=25°C
VIN=2.7 to 8V
VOUT LD1117 : IOUT=10~800mA
LD1117A : IOUT=10~1000mA
VOUT VIN=2.7 to 8V, IOUT=10mA
VIN=2.7V
VOUT LD1117 : IOUT=10~800mA
LD1117A : IOUT=10~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD1117
ILIMIT VIN=6.2V, TJ=25°C
LD1117A
IO(MIN) VIN=15V
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=4.2V, VRIPPLE =1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
MIN.
1.176
TYP.
1.200
MAX.
1.224
UNIT
V
1.176
1.200
1.224
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
SYMBOL
TEST CONDITIONS
VOUT VIN=3.5V, IOUT=10mA, TJ=25°C
VIN=3 to 8V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=3 to 8V, IOUT=0mA
VIN=3V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD1117
ILIMIT VIN=6.5V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=4.5V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.5
0.3
5
800
1000
mA
2
100
60
5
75
mA
V
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
%/W
MIN
1.470
TYP
1.500
MAX
1.530
UNIT
V
1.470
1.500
1.530
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
0.5
0.3
5
800
1000
60
V
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
V
%/W
6 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD1117/A-1.8
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LD1117/A-2.5
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
TEST CONDITIONS
VOUT VIN=3.8V, IOUT=10mA, TJ=25°C
VIN=3.3 to 8V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=3.3 to 8V, IOUT=0mA
VIN=3.3V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD1117
ILIMIT VIN=6.8V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=5.5V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
MIN.
1.764
TYP.
1.800
MAX.
1.836
UNIT
V
1.764
1.800
1.836
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
SYMBOL
TEST CONDITIONS
VOUT VIN=4.5V, IOUT=10mA, TJ=25°C
VIN=3.9 to 10V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=3.9 to 10V, IOUT=0mA
VIN=3.9V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD1117
ILIMIT VIN=7.5V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=5.5V, VRIPPLE =1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.5
0.3
5
800
1000
60
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
%/W
MIN.
2.450
TYP.
2.500
MAX.
2.550
UNIT
V
2.450
2.500
2.550
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
0.5
0.3
5
800
1000
60
V
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
V
%/W
7 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD1117/A-2.85
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LD1117/A-3.0
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
TEST CONDITIONS
VOUT VIN=4.85V, IOUT=10mA, TJ=25°C
VIN=4.25 to 10V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=4.25 to 10V, IOUT=0mA
VIN=4.25V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD1117
ILIMIT VIN=7.85V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=5.85V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
MIN
2.793
TYP
2.850
MAX
2.907
UNIT
V
2.793
2.850
2.907
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
SYMBOL
TEST CONDITIONS
VOUT VIN=5V, IOUT=10mA, TJ=25°C
VIN=4.5 to 10V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=4.5 to 12V, IOUT=0mA
VIN=4.5V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD1117
ILIMIT VIN=8V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=6V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.5
0.3
5
800
1000
60
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
%/W
MIN.
2.940
TYP.
3.000
MAX.
3.060
UNIT
V
2.940
3.000
3.060
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
0.5
0.3
5
800
1000
60
V
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
V
%/W
8 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD1117/A-3.3
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LD1117/A-3.6
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
TEST CONDITIONS
VOUT VIN=5.3V, IOUT=10mA, TJ=25°C
VIN=4.75 to 10V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=4.75 to 15V, IOUT=0mA
VIN=4.75V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD1117
ILIMIT VIN=8.3V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=6.3V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
MIN.
3.234
TYP.
3.300
MAX.
3.366
UNIT
V
3.234
3.300
3.366
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
SYMBOL
TEST CONDITIONS
VOUT VIN=5.6V, IOUT=10mA, TJ=25°C
VIN=5 to 10V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT VIN=5 to 15V, IOUT=0mA
VIN=5V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD1117
ILIMIT VIN=8.6V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=6.6V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.5
0.3
5
800
1000
60
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
%/W
MIN.
3.528
TYP.
3.600
MAX.
3.672
UNIT
V
3.528
3.600
3.672
V
1
6
mV
1
10
mV
15
10
%
%
V
mA
0.5
0.3
5
800
1000
60
V
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
V
%/W
9 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD1117/A-5.0
PARAMETER
Output Voltage
SYMBOL
TEST CONDITIONS
VOUT VIN=7V, IOUT=10mA, TJ=25°C
VIN=6.5 to 15V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1.0A
VOUT VIN=6.5 to 15V, IOUT=0mA
VIN=6.5V
VOUT LD1117 : IOUT=0~800mA
LD1117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD1117
ILIMIT VIN=10V, TJ=25°C
LD1117A
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
SVR
VIN=8V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
VD
IOUT=800mA
IOUT=1A
TA=25°C, 30ms Pulse
MIN.
4.900
TYP.
5.000
MAX.
5.100
UNIT
V
4.900
5.000
5.100
V
1
10
mV
1
15
mV
15
10
%
%
V
mA
SYMBOL
TEST CONDITIONS
VREF VIN-VOUT=2V, IOUT=10mA, TJ=25°C
VIN-VOUT=1.4 to 10V
Reference Voltage
VREF LD1117 : IOUT=10~800mA
LD1117A : IOUT=10~1000mA
Line Regulation
VOUT VIN-VOUT=1.5 to 13.75V, IOUT=10mA
VIN-VOUT=3V
Load Regulation
VOUT LD1117 : IOUT=10~800mA
LD1117A : IOUT=10~1000mA
Temperature stability
VOUT
Long Term Stability
VOUT 1000 hrs, TJ=125°C
Operating Input Voltage
VIN
Adjustment Pin Current
IADJ
VIN15V
VIN-VOUT=1.4 to 10V,
Adjustment Pin Current Change
IADJ LD1117 : IOUT=10 ~ 800mA
LD1117A : IOUT=10 ~ 1000mA
Minimum Load Current
IO(MIN) VIN=15V
LD1117
Current Limit
ILIMIT VIN-VOUT=5V, TJ=25°C
LD1117A
Output Noise (%VO)
eN
B=10Hz to 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
Supply Voltage Rejection
SVR
VIN-VOUT=3V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
Dropout Voltage
VD
IOUT=800mA
IOUT=1A
Thermal Regulation
TA=25°C, 30ms Pulse
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Current Limit
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LD1117/A-ADJ
PARAMETER
Reference Voltage
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0.5
0.3
5
800
1000
60
mA
100
V
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
%/W
MIN
1.225
TYP
1.25
MAX
1.275
UNIT
V
1.225
1.25
1.275
V
0.035
0.2
%
0.1
0.4
%
60
15
120
%
%
V
A
1
5
A
2
5
mA
0.50
0.3
800
1000
60
V
mA
0.003
%
75
dB
1.00
1.15
1.20
1.20
0.01
1.10
1.25
1.30
1.30
0.10
V
%/W
10 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATIONS
UTC LD1117/A-XX
VIN
IN
+
OUT
GND/ADJ
10µF
VOUT
+
100µF
Fig.1 Tyncal Application Circuit
UTC LD1117/A-XX
VIN
IN
VOUT
OUT
GND/ADJ
10µF
10µF
Fig.2 Tyncal Application Circuit (FOR MLCC)
UTC LD1117/A-5.0V
VIN
IN
+
OUT
+
GND/ADJ
10µF
100µF
VOUT = -5V
Floating Input
Fig.3 Negative Supply
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11 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATIONS (Cont.)
110
110
UTC LD1117/A2.85V
OUT
IN
+
110
+
GND/ADJ
4.75V
to
5.25V
18-27
Lines
22µF
110
10µF
Fig.4 Active Terminator for SCSI-2 BUS
UTC LD1117/A-5.0V
VIN > 12V
IN
+
OUT
+
GND/ADJ
10µF
5V to 10V
100µF
+
10µF *
Fig.5 Circuit for Increasing Output Voltage
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12 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
APPLICATION NOTE of LD1117/A ADJUSTABLE
The LD1117/A adjustable has a reference voltage of between the OUT and ADJ/GND pins. IADJ is 60µA typ.
(120µA max.) and IADJ is 1μA typ. (5µA max.).
R1 is normally fixed to 120Ω.
From figure 6 we obtain:
VOUT=VREF+R2(IADJ+IR1)=VREF + R2(IADJ+VREF/R1)=VREF(1+R2/R1) + R2 x IADJ.
Usually R2 value is in the range of few KΩ, so the R2 X IADJ product could be neglected; then the above
expression becomes: VOUT=VREF(1+R2/R1)
For better load regulation, realize a good Kelvin connection of R1 and R2 is important. Particularly R1
connection must be realized very close to OUT and ADJ/GND 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. 8)
UTC LD1117/A
VIN
+
IN
OUT
VOUT
+
GND/ADJ
10µF
10µF
R1
120Ω
VREF
R2
Fig.6 Adjustable Output Voltage Application Circuit
UTC LD1117/A
VIN
IN
VOUT
OUT
GND/ADJ
10µF
10µF
R1
120Ω
VREF
R2
Fig.7 Adjustable Output Voltage Application Circuit
(FOR MLCC)
UTC LD1117/A
VIN
+
10µF
IN
OUT
VOUT
+
GND/ADJ
10µF
R1
120Ω
VREF
+
R2
10µF
Fig.8 Adjustable Output Voltage Application with improved Ripple Rejection.
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13 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Line Transient Response
Load Transient Response
VIN=5V, VOUT=2.5V，
IOUT=0.1～0.6A
50
0
-50
Input Voltage
Change(V)
600
100
20
0
-20
-40
5
4
0 10 20 30 40 50 60 70 80 90 100
Time (µs)
0 25 50 75 100 125 150 175 200 225 250
Time (µs)
Dropout Voltage (VIN-VOUT)
Ripple Rejection
1.2
90
TJ=25°C
1.1
TJ=50°C
1.0
Ripple Rejection (dB)
Load
Current(mA)
-100
Dropout Voltage, VD (V)
VIN=4～5V, VOUT=2.5V，
CI=1uF, CO=10uF,
IOUT=0.1A
40
Output Voltage
Deviation(mV)
Output Voltage
Deviation(mV)
100 CI=10uF, CO=10uF,
TJ=125°C
0.9
0.8
0.7
80
70
CO=10µF
60
50
40
0.6
0.5
CADJ =22µF
IOUT=0.1A
0
0.2
0.4
0.6
0.8
Output Current, IOUT (A)
30
10
1.0
100
1M
Temperature Stability
Adjust Pin Current
2.0
Output Voltage Change (%)
100
Adjust Pin Current (µA)
1K
10K
100K
Frequency (Hz)
80
60
40
20
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
0
-50
-25
0
25
50
75
Temperature (°C)
100 125
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www.unisonic.com.tw
-2.0
-50 -25
0
25 50 75 100 125 150
Temperature (°C)
14 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
Load Regulation
Short-Circuit Current
0.16
Output Voltage Deveiation (%)
Short Circuit Current (A)
2.8
2.4
TJ=125°C
2.0
TJ=25°C
1.6
1.2
0.8
0.4
0
0
5
Input/Output Differential (V)
ΔILOAD=1A
0.12
0.08
0.04
0
-0.04
-0.08
-0.12
-50
10
3.65
1.245
3.60
Output Voltage, VOUT(V)
1.250
1.230
1.225
1.220
1.215
1.210
100 125
3.55
3.50
3.45
VOUT=3.3V
3.40
3.35
3.30
0
25 50 75 100 125 150 175
Junction Temperature, TJ(°C)
Output Voltage vs. Temperautre
Output Voltage vs. Temperautre
2.70
2.05
VOUT Set With 1% Resistors
2.60
2.55
2.50
2.45
2.40
2.35
VOUT=2.5V
2.30
2.25
2.20
-75 -50 -25 0 25 50 75 100 125 150 175
Junction Temperature, TJ(°C)
UNISONIC TECHNOLOGIES CO., LTD
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2.00
Output Voltage, VOUT(V)
2.65
25
50
75
Temperature (°C)
VOUT Set With 1% Resistors
3.25
3.20
-75 -50 -25
1.205
-75 -50 -25 0 25 50 75 100 125 150 175
Junction Temperature(°C)
Output Voltage, VOUT(V)
Reference Voltage, VREF (V)
3.70
1.235
0
Output Voltage vs. Temperautre
Reference Voltge vs. Temperature
1.255
1.240
-25
VOUT Set With 1% Resistors
1.95
1.90
1.85
1.80
1.75
1.70
VOUT=1.8V
1.65
1.60
1.55
-75 -50 -25 0 25 50 75 100 125 150 175
Junction Temperature, TJ(°C)
15 of 16
QW-R102-006.AS
LD1117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS (Cont.)
Safe Operating Area vs. Capacitor ESR
ESR(Ohm)
10
8
6
IO=10mA~1.0A
4
2
0
0
2
4
6
8
CO (µF)
10
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all UTC products described or contained herein .
UTC products are not designed for use in life support appliances, devices or systems where malfunction
of these products can be reasonably expected to result in personal injury. Reproduction in whole or in
part is prohibited without the prior written consent of the copyright owner. UTC reserves the right to
make changes to information published in this document, including without limitation specifications and
product descriptions, at any time and without notice. This document supersedes and replaces all
information supplied prior to the publication hereof.
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QW-R102-006.AS
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