Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LD2117/A
LINEAR INTEGRATED CIRCUIT
LOW DROP FIXED AND
ADJUSTABLE POSITIVE
VOLTAGE REGULATORS

DESCRIPTION
The UTC LD2117/A is a low dropout, 3-terminal positive
voltage regulator designed to provide output current up to
800mA/1A, There are adjustable versions (VREF=1.25V) and
various fixed versions.

FEATURES
* Low dropout voltage
* Suitable for SCSI-2 active termination if VOUT set to 2.85V
* Output current up to 0.8A for 2117 and 1.0A for 2117A
* Built-in current limit and over temperature protection
* Available in ±1%(at 25°C) and 2% in all temperature range
* Ultra low current consumption (0.35mA typ.)
* Ultra low Adjustment Current (7μA typ.)
* Ultra low minimum Load (0.3mA typ.)
* Stable with low ESR ceramic output capacitor (MLCC)

ORDERING INFORMATION
Lead Free
Ordering Number
Halogen Free
Package
-
LD2117G-xx-AA3--R
SOT-223
LD2117L-xx-TN3--R
LD2117G-xx-TN3--R
TO-252

Pin Assignment
A: AOI
B: OAI
C: AIO
D: IAO
Packing
Tape Reel
Notes: 1.  : Current code: Blank: 800mA
A: 1A
2. Pin Assignment: I: VIN O: VOUT
A: ADJ
3. xx: Output Voltage, Refer to Marking Information.
LD2117 1 G-xx-AA3- 2 - R
(1)Packing Type
(1) R: Tape Reel
(2)Pin Assignment
(2) refer to Pin Assignment
(3)Package Type
(3) AA3: SOT-223, TN3: TO-252
(4)Output Voltage Code
(4) xx: refer to Marking Information
(5)Green Package
(5) G: Halogen Free and Lead Free, L: Lead Free
(6)Current Code
(6) Blank: 800mA, A: 1A
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Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
Current Code
SOT-223
TO-252

12 :1.2V
15 :1.5V
18 :1.8V
30 :3.0V
33 :3.3V
36 :3.6V
50 :5.0V
AD :ADJ
LD2117 G
Voltage Code
1
2
Pin Code
Date Code
3
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
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2 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
DC Input Voltage
VIN
18
V
Power Dissipation
PD
Internally limited
W
Junction Temperature
TJ
+150
°C
Storage temperature
TSTG
-65 ~ +150
°C
Note: 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.

RECOMMENDED OPERATING RATINGS
PARAMETER
SYMBOL
VIN
TJ
Input Voltage
Operating Junction Temperature

UNIT
V
°C
RATINGS
165
112
15
12
UNIT
°C/W
°C/W
°C/W
°C/W
THERMAL RESISTANCES CHARACTERISTICS
PARAMETER
Junction to Ambient
Junction to Case

RATINGS
15
0 ~ +125
SYMBOL
SOT-223
TO-252
SOT-223
TO-252
θJA
θJC
ELECTRICAL CHARACTERISTICS
(TA=25°C, refer to the test circuits, TJ=0 ~ 125°C, CO=10μF unless otherwise specified)
For LD2117/A-1.2
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
Output Voltage
VOUT VIN=3.2V, IOUT=10mA, TJ=25°C
1.176
VIN=2.7 ~ 8V
Output Voltage
VOUT LD2117 : IOUT=10~800mA
1.176
LD2117A : IOUT=10~1000mA
Line Regulation
VOUT VIN=2.7 ~ 8V, IOUT=10mA
VIN=2.7V
Load Regulation
VOUT LD2117 : IOUT=10~800mA
LD2117A : IOUT=10~1000mA
Temperature stability
VOUT
Long Term Stability
VOUT 1000 hrs, TJ=125°C
Operating Input Voltage
VIN
IOUT=100mA
Quiescent Current
IQ
VIN10V
LD2117
800
Current Limit
ILIMIT VIN=6.2V, TJ=25°C
LD2117A 1000
Output Noise Voltage
eN
B=10Hz ~ 10KHz, TJ=25°C
IOUT=40mA, f=120Hz, TJ=25°C,
75
Supply Voltage Rejection
SVR
VIN=4.2V, VRIPPLE=1VPP
IOUT=100mA
IOUT=500mA
Dropout Voltage
VD
IOUT=800mA
IOUT=1A
Thermal Regulation
TA=25°C, 30ms Pulse
Thermal Shutdown
OTP
UNISONIC TECHNOLOGIES CO., LTD
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TYP
1.200
MAX
1.224
UNIT
V
1.200
1.224
V
1
6
mV
1
10
mV
15
0.5
%
%
V
mA
0.5
0.3
0.35
mA
V
100
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
V
%/W
°C
3 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD2117/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
Thermal Shutdown
For LD2117/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
Thermal Shutdown
SYMBOL
TEST CONDITIONS
VOUT VIN=3.5V, IOUT=10mA, TJ=25°C
VIN=3 ~ 8V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT VIN=3 ~ 8V, IOUT=0mA
VIN=3V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD2117
ILIMIT VIN=6.5V, TJ=25°C
LD2117A
eN
B=10Hz ~ 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
OTP
SYMBOL
TEST CONDITIONS
VOUT VIN=3.8V, IOUT=10mA, TJ=25°C
VIN=3.3 ~ 8V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT VIN=3.3 ~ 8V, IOUT=0mA
VIN=3.3V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN10V
LD2117
ILIMIT VIN=6.8V, TJ=25°C
LD2117A
eN
B=10Hz ~ 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
OTP
UNISONIC TECHNOLOGIES CO., LTD
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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
0.5
%
%
V
mA
0.5
0.3
0.35
800
1000
mA
V
100
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
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
0.5
%
%
V
mA
0.5
0.3
0.35
800
1000
V
%/W
°C
mA
V
100
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
V
%/W
°C
4 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD2117/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
Thermal Shutdown
For LD2117/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
Thermal Shutdown
SYMBOL
TEST CONDITIONS
VOUT VIN=5V, IOUT=10mA, TJ=25°C
VIN=4.5 ~ 10V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT VIN=4.5 ~ 12V, IOUT=0mA
VIN=4.5V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD2117
ILIMIT VIN=8V, TJ=25°C
LD2117A
eN
B=10Hz ~ 10KHz, TJ=25°C
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
OTP
SYMBOL
TEST CONDITIONS
VOUT VIN=5.3V, IOUT=10mA, TJ=25°C
VIN=4.75 ~ 10V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT VIN=4.75 ~ 15V, IOUT=0mA
VIN=4.75V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD2117
ILIMIT VIN=8.3V, TJ=25°C
LD2117A
eN
B=10Hz ~ 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
OTP
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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
0.5
%
%
V
mA
0.5
0.3
0.35
800
1000
mA
V
100
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
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
0.5
%
%
V
mA
0.5
0.3
0.35
800
1000
V
%/W
°C
mA
V
100
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
V
%/W
°C
5 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD2117/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
Thermal Shutdown
For LD2117/A-5.0
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
Thermal Shutdown
SYMBOL
TEST CONDITIONS
VOUT VIN=5.6V, IOUT=10mA, TJ=25°C
VIN=5 ~ 10V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT VIN=5 ~ 15V, IOUT=0mA
VIN=5V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD2117
ILIMIT VIN=8.6V, TJ=25°C
LD2117A
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
OTP
SYMBOL
TEST CONDITIONS
VOUT VIN=7V, IOUT=10mA, TJ=25°C
VIN=6.5 ~ 15V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1.0A
VOUT VIN=6.5 ~ 15V, IOUT=0mA
VIN=6.5V
VOUT LD2117 : IOUT=0~800mA
LD2117A : IOUT=0~1000mA
VOUT
VOUT 1000 hrs, TJ=125°C
VIN
IOUT=100mA
IQ
VIN15V
LD2117
ILIMIT VIN=10V, TJ=25°C
LD2117A
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
OTP
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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
0.5
%
%
V
mA
0.5
0.3
0.35
800
1000
mA
V
100
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
MIN.
4.9
TYP.
5.000
MAX.
5.1
UNIT
V
4.9
5.000
5.1
V
1
6
mV
1
15
mV
15
0.5
%
%
V
mA
0.5
0.3
0.35
800
1000
V
%/W
°C
mA
V
100
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
V
%/W
°C
6 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For LD2117/A-ADJ
PARAMETER
Reference Voltage
SYMBOL
TEST CONDITIONS
VREF VIN-VOUT=2V, IOUT=10mA, TJ=25°C
VIN-VOUT=1.4~10V
Reference Voltage
VREF
LD2117A : IOUT=10~1000mA
Line Regulation
∆VOUT VIN-VOUT=1.5 ~ 13.75V, IOUT=10mA
VIN-VOUT=3V
Load Regulation
∆VOUT LD2117 : IOUT=10~800mA
LD2117A : IOUT=10~1000mA
Temperature stability
∆VOUT
Long Term Stability
∆VOUT 1000 hrs, TJ=125°C
Operating Input Voltage
VIN
Adjustment Pin Current
IADJ
VIN15V
VIN-VOUT=1.4~10V,
Adjustment Pin Current Change
∆IADJ
LD2117A : IOUT=10 ~ 1000mA
Minimum Load Current
IO(MIN) VIN=15V
LD2117
Current Limit
ILIMIT VIN-VOUT=5V, TJ=25°C
LD2117A
Output Noise (%VO)
eN
B=10Hz ~ 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
Thermal Shutdown
OTP
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1.225
TYP
1.25
MAX
1.275
UNIT
V
1.225
1.25
1.275
V
0.035
0.2
%
0.1
0.5
%
7
15
10
%
%
V
μA
0.3
2
μA
0.3
1
mA
0.50
0.3
800
1000
mA
0.003
%
75
dB
1.05
1.15
1.18
1.22
0.01
150
1.15
1.25
1.28
1.35
0.10
V
%/W
°C
7 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
APPLICATION NOTE of LD2117/A ADJUSTABLE
The LD2117/A adjustable has a reference voltage of between the OUT and ADJ pins. IADJ is 7μA typ. (10μA
max.) and IADJ is 0.3A typ. (2µA max.).
R1 is normally fixed to 1.2kΩ.
From figure 4 we obtain:
VOUT=VREF+R2(IADJ+IR1)=VREF + R2(IADJ+VREF/R1)=VREF(1+R2/R1) + R2 × 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 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F electrolytic capacitor placed in
parallel to the R2 resistor (See Fig. 5)
The UTC LD2117/A also supports MLCC. See Fig.6 for adjustable output and Fig.7 for fixed Output
UTC LD2117/A
VIN
IN
+
OUT
ADJ
10µF
VOUT
+
10µF
R1
1.2kΩ
VREF
R2
Fig.4 Adjustable Output Voltage Application Circuit
Fig.5 Adjustable Output Voltage Application with improved Ripple Rejection.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
8 of 12
QW-R102-042.H
LD2117/A

LINEAR INTEGRATED CIRCUIT
APPLICATION NOTE of LD2117/A ADJUSTABLE(Cont.)
Fig.6 Adjustable Output Voltage Application Circuit for MLCC
UTC LD2117/A
VIN
GND
10μF
VOUT
VOUT
VIN
10μF
Fig.7 Fixed Output Voltage Application Circuit for MLCC
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9 of 12
QW-R102-042.H
LD2117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Input Voltage
Change (V)
Load
Current (mA)
Output Voltage
Deviation (mV)
Output Voltage
Deviation (mV)

Dropout Voltage (VIN-VOUT)
TJ=25°C
1.2
1.1
1.0
TJ=125°C
0.9
0.8
80
CADJ =22µF
IOUT=0.1A
70
CO=10µF
60
50
40
0.7
0.2
0.4
0.6 0.8
Output Current, IOUT (A)
30
10
1.0
100
1K
10K
Frequency (Hz)
100K
1M
Short Circuit Current (A)
0
Adjust Pin Current (µA)
0.6
Ripple Rejection
90
Ripple Rejection (dB)
Dropout Voltage, VD (V)
1.3
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10 of 12
QW-R102-042.H
LD2117/A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)

Load Regulation
0.5
ΔILOAD=1A
0.7
0.6
0.5
0.4
0.3
0.4
0.35
0.3
0.25
0.2
0.2
0.1
-50 -25
0
25 50 75
Temperature (°C)
0.15
-50 -25
100 125
Output Voltage vs. Temperautre
5.15
1.25
5.1
1.225
VOUT=1.2V
1.2
1.175
1.15
0
25 50 75
Temperature (°C)
100 125
Output Voltage vs. Temperautre
1.275
Output Voltage (V)
Output Voltage (V)
Input Current vs. Temperature
0.5
Input Current (mA)
Output Voltage Deveiation (%)
0.8
1.125
5.05
VOUT=5V
5.0
4.95
4.9
4.85
0
4.8
-50 -25
25 50 75 100 125150
Temperature (°C)
0
25 50 75 100 125150
Temperature (°C)
Power (W)
Reference Voltage (V)
1.1
-50 -25
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11 of 12
QW-R102-042.H
LD2117/A
LINEAR INTEGRATED CIRCUIT
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
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