UTC-IC UTCLD1117

UTC LD1117/A LINEAR INTEGRATED CIRCUIT
LOW DROP FIXED AND
ADJUSTABLE POSITIVE VOLTAGE
REGULATORS
3
2 1
SOT-223
DESCRIPTION
The UTC LD1117/A is a LOW DROP Voltage Regulator
able to provide up to 0.8/1.0A of Output Current, available
even in adjustable version (Vref=1.25V). Concerning fixed
versions, are offered the following Output Voltages: 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, TO-252, TO-263, TO-263-3, SOP-8 and TO-220.
The SOT-223, TO-263, TO-263-3 and TO-252 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 the 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/A is pin to pin compatible with the other standard
Adjustable voltage regulators maintaining the better
performances in terms of Drop and Tolerance.
SOP-8
1
1
TO-220
TO-252
1
1
TO-263
SOP-8
1: GND;
4: Vin;
TO-263-3
2,3,6,7: Vout;
5,8: NC
FEATURES
*Low dropout voltage (1V Typ.)
*2.85V device performances are suitable for SCSI-2 active
termination
*Output current up to 0.8/1.0A
*Fixed output voltage of: 1.8V,2.5V, 2,85V, 3.0V, 3.3V, 5.0V
*Adjustable version availability (Vref=1.25V)
*Internal current and thermal limit
*Available in ±1%(at 25°C) and 2% in all temperature range
*Supply voltage rejection: 75dB (TYP)
*Temperature range: 0°C to 125°C
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE PIN CODE PIN 1
PIN 2
PIN 3
MARKING
CODE
18:1.8V
25:2.5V
SOT-223
28:2.85V
30:3.0V
33:3.3V
50:5.0V
AD:ADJ
TO-220
TO-252
TO-263
TO-263-3
A
GND
OUT
IN
B
OUT
GND
IN
CURRENT
CODE
VOLTAGE
CODE
C
GND
IN
OUT
D
IN
GND
OUT
A
GND
OUT
IN
B
OUT
GND
IN
C
GND
IN
OUT
D
IN
GND
OUT
LD1117
PIN CODE
DATE
CODE
1
2
3
UTC
LD1117
CURRENT
CODE
PIN CODE
VOLTAGE
CODE
DATE
CODE
1
2
3
Note: The current code “A” means output current up to 1.0A, while without “A” means output current up to 0.8A.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VALUE
UNIT
DC Input Voltage
VIN
15
V
Power Dissipation
Ptot
12
W
Storage temperature
Tstg
-65 ~ +150
°C
Operating Junction
Top
0 ~ +125
°C
Temperature
Note: Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional
operation under there condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit
could definitively damage the device.
THERMAL DATA
PARAMETER
SYMBOL
Thermal Resistance Junction-case
SOT-223
SOP-8
TO-252
TO-220
TO-263
Thermal Resistance Junction-ambient
TO-220
Rth-case
UTC
VALUE
UNIT
15
20
8
3
3
°C/W
°C/W
°C/W
°C/W
°C/W
50
°C/W
Rthj-amb
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
LD1117/A
UTC LD1117/A-1.8 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
Dropout Voltage
Vo
Vo
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
Vd
Thermal Regulation
TEST CONDITIONS
Vin=3.8V, Io=10mA, Tj=25°C
Io=0 to 800/1000mA, Vin=3.3 to 8V
Vin=3.3 to 8V, Io=0mA
Vin=3.3V, Io=0 to 800/1000mA
1000 hrs, Tj=125°C
Io=100mA
Vin≤8V
Vin=6.8V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=5.5V,
Vripple=1Vpp
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
MIN.
TYP.
MAX.
UNIT
1.780
1.760
1.800
1.820
1.840
6
10
V
V
mV
mV
%
%
V
mA
mA
µV
dB
1
1
0.5
0.3
800
60
5
950
100
75
10
10
1200
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
MIN.
TYP.
MAX.
UNIT
2.475
2.450
2.450
2.400
2.500
2.500
2.525
2.550
2.550
2.600
6
10
V
V
V
V
mV
mV
%
%
V
mA
mA
UTC LD1117/A-2.5 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
Vo
Vin=4.5V, Io=10mA, Tj=25°C
Output Voltage
Vo
Io=0 to 800/1000mA,
Vin=3.9 to 10V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
UTC
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
±1%
±2%
±2%
±4%
Vin=3.9 to 10V, Io=0mA
Vin=3.9V, Io=0 to 800/1000mA
1000 hrs, Tj=125°C
Io=100mA
Vin≤10V
Vin=7.5V, Tj=25°C
1
1
0.5
0.3
800
5
950
15
10
1200
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
Output Noise Voltage
Supply Voltage
Rejection
Dropout Voltage
eN
SVR
Vd
Thermal Regulation
TEST CONDITIONS
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=5.5V,
Vripple=1Vpp
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
MIN.
TYP.
60
100
75
MAX.
UNIT
µV
dB
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
MIN.
TYP.
MAX.
UNIT
2.82
2.79
2.85
2.88
2.91
6
10
V
V
mV
mV
%
%
V
mA
mA
µV
DB
UTC LD1117/A-2.85 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
Dropout Voltage
Vo
Vo
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
Vd
Thermal Regulation
TEST CONDITIONS
Vin=4.85V, Io=10mA, Tj=25°C
Io=0 to 800/1000mA,Vin=4.25 to 10V
Vin=4.25 to 10V, Io=0mA
Vin=4.25V, Io=0 to 800/1000mA
1000 hrs, Tj=125°C
Io=100mA
Vin≤10V
Vin=7.85V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=5.85V,
Vripple=1Vpp
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
1
1
0.5
0.3
800
60
5
950
100
75
15
10
1200
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
MIN.
TYP.
MAX.
UNIT
2.97
2.94
2.94
2.88
3.00
3.00
3.03
3.06
3.06
3.12
6
10
V
V
V
V
mV
mV
%
%
V
mA
mA
µV
dB
UTC LD1117/A-3.0 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
Vo
Vin=5V, Io=10mA, Tj=25°C
Output Voltage
Vo
Io=0 to 800/1000mA,
Vin=4.5 to 10V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
UTC
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
±1%
±2%
±2%
±4%
Vin=4.5 to 12V, Io=0mA
Vin=4.5V, Io=0 to 800/1000mA
1000 hrs, Tj=125°C
Io=100mA
Vin≤12V
Vin=8V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=6V,
Vripple=1Vpp
1
1
0.5
0.3
800
60
5
950
100
75
15
10
1200
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
Dropout Voltage
Vd
Thermal Regulation
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
MIN.
TYP.
MAX.
UNIT
3.267
3.235
3.235
3.160
3.300
3.300
3.333
3.365
3.365
3.440
6
10
V
V
V
V
mV
mV
%
%
V
mA
mA
µV
DB
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
UTC LD1117/A-3.3 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
Vo
Vin=5.3V, Io=10mA, Tj=25°C
Output Voltage
Vo
Io=0 to 800/1000mA,
Vin=4.75 to 10V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
Dropout Voltage
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
Vd
Thermal Regulation
±1%
±2%
±2%
±4%
Vin=4.75 to 15V, Io=0mA
Vin=4.75V, Io=0 to 800/1000mA
1000 hrs, Tj=125°C
Io=100mA
Vin≤15V
Vin=8.3V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=6.3V,
Vripple=1Vpp
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
1
1
0.5
0.3
800
60
5
950
100
75
15
10
1200
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
MIN.
TYP.
MAX.
UNIT
4.95
4.90
4.90
4.80
5.00
5.00
5.05
5.10
5.10
5.20
10
15
V
V
V
V
mV
mV
%
%
V
mA
mA
µV
dB
UTC LD1117/A-5.0 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
Vo
Vin=7V, Io=10mA, Tj=25°C
Output Voltage
Vo
Io=0 to 800/1000mA,
Vin=6.5 to 15V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
UTC
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
±1%
±2%
±2%
±4%
Vin=6.5 to 15V, Io=0mA
Vin=6.5V, Io=0 to 800/1000mA
1000 hrs, Tj=125°C
Io=100mA
Vin≤15V
Vin=10V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=8V,
Vripple=1Vpp
1
1
0.5
0.3
800
60
5
950
100
75
15
10
1200
UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
Dropout Voltage
Vd
Thermal Regulation
TEST CONDITIONS
MIN.
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
TYP.
MAX.
UNIT
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
UTC LD1117/A-ADJUSTABLE ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
SYMBOL
Reference Voltage
Reference Voltage
Vref
Vref
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Adjustment Pin Current
Adjustment Pin Current
Change
Minimum Load Current
Output Current
Output Noise (%Vo)
Supply Voltage
Rejection
Dropout Voltage
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Iadj
∆Iadj
Io(min)
Io
eN
SVR
Vd
Thermal Regulation
TEST CONDITIONS
Vin-VO=2V, Io=10mA, Tj=25°C
Io=10 to 800/1000mA, Vin-Vo=1.4 to
10V
Vin-Vo=1.5 to 13.75V, Io=10mA
Vin-Vo=3V, Io=10 to 800/1000mA
MIN.
TYP.
MAX.
UNIT
1.238
1.225
1.25
1.262
1.275
V
V
0.035
0.10
0.50
0.3
0.200
0.400
%
%
%
%
V
µA
µA
1000 hrs, Tj=125°C
Vin≤15V
Vin-Vo=1.4 to 10V,
Io=10 to 800/1000mA
Vin=15V
Vin-Vo=5V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C,
Vin-Vo=3V, Vripple=1Vpp
Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
60
1
800
60
15
120
5
2
950
0.003
75
5
1200
mA
mA
%
dB
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
V
V
%/W
TYPICAL APPLICATIONS
FIG.1 Negative Supply
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
FIG.2 Active Terminator for SCSI-2 BUS
FIG.3 Circuit for Increasing Output Voltage
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UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
FIG.4 Voltage Regulator With Reference
FIG.5 Battery Backed-up Regulated Supply
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
FEEDBACK PATH
FIG.6 Post-Regulated Dual Supply
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UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
LD1117/A ADJUSTABLE APPLICATION NOTE
The LD1117/A ADJUSTABLE has a thermal stabilized 1.25±0.012V reference voltage between the OUT and ADJ
pins. IADJ is 60µA typ. (120µA max.) and ∆IADJ is 1µA typ. (5µA max.).
R1 is normally fixed to 120Ω. From figure 7 we obtain:
VOUT=VREF+R2(IADJ + IR1)=VREF + R2(IADJ + VREF / R1)=VREF(1+R2/R1) + R2 x IADJ.
In normal application R2 value is in the range of few Kohm,, so the R2 X IADJ product could not be considered in the
VOUT calculation; then the above expression becomes: VOUT=VREF(1+R2/R1)
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. 8)
FIG.7 Adjustable Output Voltage Application Circuit
FIG.8 Adjustable Output Voltage Application with improved Ripple Rejection.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Fig.2 Output Voltage vs.
Temperautre
Fig.1 Reference Voltge vs.
Temperature
3.70
1.245
3.65
1.240
3.60
Output Voltage(V)
reference voltage (V)
1.250
1.235
1.230
1.225
1.220
1.215
3.50
3.45
3.40
3.35
3.30
1.205
3.25
1.200
-75 -50 -25
3.20
0
25
50
75 100 125 150 175
Vout=3.6V
3.55
1.210
Junction Temperature(°C)
VOUT SET WITH 1% RESISTORS
-75
Vout=3.3V
Note: LD1117 Only
-50 -25
0
25
50 75
100 125 150 175
Junction Temperature(°C)
Fig.3 Maximum Power Dissipation
10
8
Power (W)
TO-263 & TO-252
6
4
SOT-223
2
0
25
45
65
85
105
125
Case Temperature(°C)
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