LD1117-2.5V-C(TO-220) [UTC]
Regulator, 1 Output, BIPolar,;
| 型号： | LD1117-2.5V-C(TO-220) |
| 厂家： | 
Unisonic Technologies |
| 描述： | Regulator, 1 Output, BIPolar, |
| 文件： | 总12页 (文件大小：148K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
LOW DROP FIXED AND
ADJUSTABLE POSITIVE VOLTAGE
1
2
3
REGULATORS
SOT-223
SOP-8
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.
1
1
TO-220
TO-252
1
1
TO-263
TO-263-3
SOP-8
1: GND; 2,3,6,7: Vout;
4: Vin; 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
CODE
MARKING
18:1.8V
25:2.5V
SOT-223 28:2.85V
30:3.0V
33:3.3V
50:5.0V
AD:ADJ
TO-220
A
B
C
D
A
B
C
D
GND
OUT
GND
IN
OUT
GND
IN
IN
IN
CURRENT
CODE
LD1117
2
PIN CODE
VOLTAGE
CODE
DATE
CODE
OUT
OUT
IN
1
GND
OUT
GND
IN
3
GND
OUT
GND
IN
UTC
CURRENT
CODE
PIN CODE
IN
LD1117
TO-252
TO-263
TO-263-3
VOLTAGE
CODE
DATE
OUT
OUT
CODE
1
2
3
GND
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.
2
QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VIN
VALUE
15
UNIT
V
DC Input Voltage
Power Dissipation
Storage temperature
Operating Junction
Temperature
Ptot
Tstg
Top
12
W
°C
°C
-65 ~ +150
0 ~ +125
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
Rth-case
VALUE
UNIT
Thermal Resistance Junction-case
SOT-223
15
20
8
3
3
°C/W
°C/W
°C/W
°C/W
°C/W
SOP-8
TO-252
TO-220
TO-263
Thermal Resistance Junction-ambient
TO-220
Rthj-amb
50
°C/W
UTC 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
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
MIN. TYP.
MAX.
1.820
1.840
6
UNIT
V
V
mV
mV
%
%
V
mA
mA
µV
dB
Output Voltage
Vo
1.780 1.800
Output Voltage
Vo
1.760
1
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
Vin=3.3V, Io=0 to 800/1000mA
1
0.5
0.3
10
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
10
10
1200
5
800
60
950
100
75
Output Noise Voltage
Supply Voltage
Rejection
eN
SVR
Dropout Voltage
Vd
Io=100mA
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
V
V
%/W
Thermal Regulation
UTC LD1117/A-2.5 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
Output Voltage
SYMBOL
Vo
TEST CONDITIONS
MIN. TYP.
MAX.
2.525
2.550
2.550
2.600
6
UNIT
V
Vin=4.5V, Io=10mA, Tj=25°C
±1%
±2%
±2%
±4%
2.475 2.500
2.450 2.500
V
Io=0 to 800/1000mA,
Vin=3.9 to 10V
Output Voltage
Vo
2.450
2.400
1
V
V
mV
mV
%
%
V
mA
mA
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Vin=3.9 to 10V, Io=0mA
Vin=3.9V, Io=0 to 800/1000mA
1
0.5
0.3
10
1000 hrs, Tj=125°C
Io=100mA
Vin≤10V
15
10
1200
5
950
Io
Vin=7.5V, Tj=25°C
800
UTC UNISONIC TECHNOLOGIES CO., LTD.
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
Output Noise Voltage
Supply Voltage
Rejection
SYMBOL
eN
SVR
TEST CONDITIONS
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=5.5V,
Vripple=1Vpp
MIN. TYP.
100
MAX.
UNIT
µV
dB
60
75
Dropout Voltage
Vd
Io=100mA
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
Io=500mA
Io=800mA
V
Io=1000mA
V
Thermal Regulation
Ta=25°C, 30ms Pulse
%/W
UTC LD1117/A-2.85 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
SYMBOL
Vo
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
MIN. TYP.
MAX.
2.88
2.91
6
UNIT
V
V
mV
mV
%
%
V
mA
mA
µV
DB
2.82
2.79
2.85
Vo
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
1
Vin=4.25V, Io=0 to 800/1000mA
1
0.5
0.3
10
1000 hrs, Tj=125°C
Io=100mA
Vin≤10V
Vin=7.85V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
15
10
1200
5
800
950
100
75
Output Noise Voltage
Supply Voltage
Rejection
eN
SVR
Io=40mA, f=120Hz, Tj=25°C, Vin=5.85V, 60
Vripple=1Vpp
Io=100mA
Dropout Voltage
Vd
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
Io=500mA
Io=800mA
V
Io=1000mA
V
Thermal Regulation
Ta=25°C, 30ms Pulse
%/W
UTC LD1117/A-3.0 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
Output Voltage
SYMBOL
Vo
TEST CONDITIONS
MIN. TYP.
MAX.
3.03
3.06
3.06
3.12
6
UNIT
V
Vin=5V, Io=10mA, Tj=25°C
±1%
±2%
±2%
±4%
2.97
2.94
2.94
2.88
3.00
3.00
V
Io=0 to 800/1000mA,
Vin=4.5 to 10V
Output Voltage
Vo
V
V
mV
mV
%
%
V
mA
mA
µV
dB
Line Regulation
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
Vin=4.5 to 12V, Io=0mA
Vin=4.5V, Io=0 to 800/1000mA
1
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
1
0.5
0.3
10
1000 hrs, Tj=125°C
Io=100mA
Vin≤12V
Vin=8V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
15
10
1200
5
800
60
950
100
75
Io=40mA, f=120Hz, Tj=25°C, Vin=6V,
Vripple=1Vpp
UTC UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
Dropout Voltage
SYMBOL
Vd
TEST CONDITIONS
MIN. TYP.
1.00
MAX.
1.10
1.15
1.20
1.25
0.10
UNIT
Io=100mA
V
Io=500mA
1.05
V
Io=800mA
1.10
1.15
0.01
V
Io=1000mA
V
Thermal Regulation
Ta=25°C, 30ms Pulse
%/W
UTC LD1117/A-3.3 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
Output Voltage
SYMBOL
Vo
TEST CONDITIONS
MIN. TYP.
MAX.
3.333
3.365
3.365
3.440
6
UNIT
V
Vin=5.3V, Io=10mA, Tj=25°C
±1%
±2%
±2%
±4%
3.267 3.300
3.235 3.300
V
Io=0 to 800/1000mA,
Vin=4.75 to 10V
Output Voltage
Vo
3.235
3.160
1
V
V
mV
mV
%
%
V
mA
mA
µV
DB
Line Regulation
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
Vin=4.75 to 15V, Io=0mA
Vin=4.75V, Io=0 to 800/1000mA
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
1
0.5
0.3
10
1000 hrs, Tj=125°C
Io=100mA
Vin≤15V
Vin=8.3V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
15
10
1200
5
800
60
950
100
75
Io=40mA, f=120Hz, Tj=25°C, Vin=6.3V,
Vripple=1Vpp
Dropout Voltage
Vd
Io=100mA
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
Io=500mA
Io=800mA
Io=1000mA
Ta=25°C, 30ms Pulse
V
V
%/W
Thermal Regulation
UTC LD1117/A-5.0 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
Output Voltage
SYMBOL
Vo
TEST CONDITIONS
MIN. TYP.
MAX.
5.05
5.10
5.10
5.20
10
UNIT
V
Vin=7V, Io=10mA, Tj=25°C
±1%
±2%
±2%
±4%
4.95
4.90
4.90
4.80
5.00
5.00
V
Io=0 to 800/1000mA,
Vin=6.5 to 15V
Output Voltage
Vo
V
V
mV
mV
%
%
V
mA
mA
µV
dB
Line Regulation
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Id
Io
eN
SVR
Vin=6.5 to 15V, Io=0mA
Vin=6.5V, Io=0 to 800/1000mA
1
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage
Rejection
1
0.5
0.3
15
1000 hrs, Tj=125°C
Io=100mA
Vin≤15V
Vin=10V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
15
10
1200
5
800
60
950
100
75
Io=40mA, f=120Hz, Tj=25°C, Vin=8V,
Vripple=1Vpp
UTC UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
Dropout Voltage
SYMBOL
Vd
TEST CONDITIONS
MIN. TYP.
1.00
MAX.
1.10
1.15
1.20
1.25
0.10
UNIT
Io=100mA
V
Io=500mA
1.05
V
Io=800mA
1.10
1.15
0.01
V
Io=1000mA
V
Thermal Regulation
Ta=25°C, 30ms Pulse
%/W
UTC LD1117/A-ADJUSTABLE ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)
PARAMETER
Reference Voltage
Reference Voltage
SYMBOL
TEST CONDITIONS
Vin-VO=2V, Io=10mA, Tj=25°C
Io=10 to 800/1000mA, Vin-Vo=1.4 to
10V
MIN. TYP.
1.238
1.225
MAX.
1.262
1.275
UNIT
V
V
Vref
1.25
Vref
Line Regulation
∆Vo
∆Vo
∆Vo
∆Vo
Vin
Iadj
∆Iadj
Vin-Vo=1.5 to 13.75V, Io=10mA
Vin-Vo=3V, Io=10 to 800/1000mA
0.035
0.10
0.50
0.3
0.200
0.400
%
%
%
%
V
µA
µA
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage
Adjustment Pin Current
Adjustment Pin Current
Change
1000 hrs, Tj=125°C
15
120
5
Vin≤15V
Vin-Vo=1.4 to 10V,
Io=10 to 800/1000mA
60
1
Minimum Load Current
Output Current
Output Noise (%Vo)
Supply Voltage
Rejection
Io(min) Vin=15V
2
5
mA
mA
%
Io
eN
SVR
Vin-Vo=5V, Tj=25°C
800
60
950
0.003
75
1200
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C,
Vin-Vo=3V, Vripple=1Vpp
Io=100mA
dB
Dropout Voltage
Vd
1.00
1.05
1.10
1.15
0.01
1.10
1.15
1.20
1.25
0.10
V
V
Io=500mA
Io=800mA
V
Io=1000mA
V
Thermal Regulation
Ta=25°C, 30ms Pulse
%/W
TYPICAL APPLICATIONS
FIG.1 Negative Supply
UTC UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
FIG.2 Active Terminator for SCSI-2 BUS
FIG.3 Circuit for Increasing Output Voltage
UTC 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
UTC UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
UTC LD1117/A LINEAR INTEGRATED CIRCUIT
FEEDBACK PATH
FIG.6 Post-Regulated Dual Supply
UTC UNISONIC TECHNOLOGIES CO., LTD.
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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.
UTC UNISONIC TECHNOLOGIES CO., LTD.
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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
1.250
1.245
1.240
1.235
1.230
1.225
1.220
1.215
3.70
3.65
3.60
3.55
3.50
3.45
3.40
V
OUT SET WITH 1% RESISTORS
Vout=3.6V
3.35
3.30
Vout=3.3V
1.210
1.205
1.200
3.25
3.20
-75 -50
Note: LD1117 Only
-75 -50 -25
25 50
100 125 150 175
0
50 75
125 150
Junc0tion Tempe75rature(°C)
-25Juncti2o5n Tempe1r0a0ture(°C) 175
Fig.3 Maximum Power Dissipation
10
8
TO-263 & TO-252
6
4
SOT-223
2
0
25
45
65
85
105
125
Case Temperature(°C)
UTC UNISONIC TECHNOLOGIES CO., LTD.
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QW-R102-006,H
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