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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
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 10F minimum capacitor is needed for stability. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within 1% at 25C. 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.
3
21
SOT-223
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 25C) and 2% in all temperature range *Supply voltage rejection: 75dB (TYP) *Temperature range: 0C to 125C
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE VOLTAGE PIN CODE PIN 1 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 B C D A B C D GND OUT GND IN GND OUT GND IN OUT GND IN GND OUT GND IN GND IN IN OUT OUT IN IN OUT OUT
VOLTAGE CODE
CURRENT CODE VOLTAGE CODE
PIN 2
PIN 3
MARKING
LD1117
PIN CODE DATE CODE
1
2
3
UTC LD1117
CURRENT CODE PIN 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.
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UNISONIC TECHNOLOGIES CO., LTD.
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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
Thermal Resistance Junction-case SOT-223 SOP-8 TO-252 TO-220 TO-263 Thermal Resistance Junction-ambient TO-220
SYMBOL
Rth-case
VALUE
15 20 8 3 3
UNIT
C/W C/W C/W C/W C/W C/W
Rthj-amb 50
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
LD 1117/A
UTC LD1117/A-1.8 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F unless otherwise specified)
PARAMETER
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
SYMBOL
Vo Vo Vo Vo Vo Vo Vin Id Io eN SVR Vd
TEST CONDITIONS
Vin=3.8V, Io=10mA, Tj=25C 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=125C Io=100mA Vin8V Vin=6.8V, Tj=25C B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin=5.5V, Vripple=1Vpp Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse
MIN.
1.780 1.760
TYP.
1.800 1 1 0.5 0.3 5 950 100 75 1.00 1.05 1.10 1.15 0.01
MAX.
1.820 1.840 6 10
UNIT
V V mV mV % % V mA mA V dB V V V V %/W
800 60
10 10 1200
Thermal Regulation
1.10 1.15 1.20 1.25 0.10
UTC LD1117/A-2.5 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F 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 Vo Vo Vo Vo Vo Vin Id Io
TEST CONDITIONS
Vin=4.5V, Io=10mA, Tj=25C Io=0 to 800/1000mA, Vin=3.9 to 10V Vin=3.9 to 10V, Io=0mA Vin=3.9V, Io=0 to 800/1000mA 1000 hrs, Tj=125C Io=100mA Vin10V Vin=7.5V, Tj=25C 1% 2% 2% 4%
MIN.
2.475 2.450 2.450 2.400
TYP.
2.500 2.500
MAX.
2.525 2.550 2.550 2.600 6 10
UNIT
V V V V mV mV % % V mA mA
1 1 0.5 0.3 5 950
800
15 10 1200
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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PARAMETER
Output Noise Voltage Supply Voltage Rejection Dropout Voltage
SYMBOL
eN SVR Vd
TEST CONDITIONS
B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin=5.5V, Vripple=1Vpp Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse
MIN.
60
TYP.
100 75 1.00 1.05 1.10 1.15 0.01
MAX.
UNIT
V dB
Thermal Regulation
1.10 1.15 1.20 1.25 0.10
V V V V %/W
UTC LD1117/A-2.85 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F unless otherwise specified)
PARAMETER
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
SYMBOL
Vo Vo Vo Vo Vo Vo Vin Id Io eN SVR Vd
TEST CONDITIONS
Vin=4.85V, Io=10mA, Tj=25C 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=125C Io=100mA Vin10V Vin=7.85V, Tj=25C B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin=5.85V, Vripple=1Vpp Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse
MIN.
2.82 2.79
TYP.
2.85 1 1 0.5 0.3 5 950 100 75 1.00 1.05 1.10 1.15 0.01
MAX.
2.88 2.91 6 10
UNIT
V V mV mV % % V mA mA V DB V V V V %/W
800 60
15 10 1200
Thermal Regulation
1.10 1.15 1.20 1.25 0.10
UTC LD1117/A-3.0 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F unless otherwise specified)
PARAMETER
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
SYMBOL
Vo Vo Vo Vo Vo Vo Vin Id Io eN SVR
TEST CONDITIONS
Vin=5V, Io=10mA, Tj=25C Io=0 to 800/1000mA, Vin=4.5 to 10V Vin=4.5 to 12V, Io=0mA Vin=4.5V, Io=0 to 800/1000mA 1000 hrs, Tj=125C Io=100mA Vin12V Vin=8V, Tj=25C B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin=6V, Vripple=1Vpp 1% 2% 2% 4%
MIN.
2.97 2.94 2.94 2.88
TYP.
3.00 3.00
MAX.
3.03 3.06 3.06 3.12 6 10
UNIT
V V V V mV mV % % V mA mA V dB
1 1 0.5 0.3 5 950 100 75
800 60
15 10 1200
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
Dropout Voltage
SYMBOL
Vd
TEST CONDITIONS
Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse
MIN.
TYP.
1.00 1.05 1.10 1.15 0.01
MAX.
1.10 1.15 1.20 1.25 0.10
UNIT
V V V V %/W
Thermal Regulation
UTC LD1117/A-3.3 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F unless otherwise specified)
PARAMETER
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
SYMBOL
Vo Vo Vo Vo Vo Vo Vin Id Io eN SVR Vd
TEST CONDITIONS
Vin=5.3V, Io=10mA, Tj=25C Io=0 to 800/1000mA, Vin=4.75 to 10V Vin=4.75 to 15V, Io=0mA Vin=4.75V, Io=0 to 800/1000mA 1000 hrs, Tj=125C Io=100mA Vin15V Vin=8.3V, Tj=25C B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin=6.3V, Vripple=1Vpp Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse 1% 2% 2% 4%
MIN.
3.267 3.235 3.235 3.160
TYP.
3.300 3.300
MAX.
3.333 3.365 3.365 3.440 6 10
UNIT
V V V V mV mV % % V mA mA V DB V V V V %/W
1 1 0.5 0.3 5 950 100 75 1.00 1.05 1.10 1.15 0.01
800 60
15 10 1200
Thermal Regulation
1.10 1.15 1.20 1.25 0.10
UTC LD1117/A-5.0 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F unless otherwise specified)
PARAMETER
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
SYMBOL
Vo Vo Vo Vo Vo Vo Vin Id Io eN SVR
TEST CONDITIONS
Vin=7V, Io=10mA, Tj=25C Io=0 to 800/1000mA, Vin=6.5 to 15V Vin=6.5 to 15V, Io=0mA Vin=6.5V, Io=0 to 800/1000mA 1000 hrs, Tj=125C Io=100mA Vin15V Vin=10V, Tj=25C B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin=8V, Vripple=1Vpp 1% 2% 2% 4%
MIN.
4.95 4.90 4.90 4.80
TYP.
5.00 5.00
MAX.
5.05 5.10 5.10 5.20 10 15
UNIT
V V V V mV mV % % V mA mA V dB
1 1 0.5 0.3 5 950 100 75
800 60
15 10 1200
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
PARAMETER
Dropout Voltage
SYMBOL
Vd
TEST CONDITIONS
Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse
MIN.
TYP.
1.00 1.05 1.10 1.15 0.01
MAX.
1.10 1.15 1.20 1.25 0.10
UNIT
V V V V %/W
Thermal Regulation
UTC LD1117/A-ADJUSTABLE ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125C, Co=10F unless otherwise specified)
PARAMETER
Reference Voltage Reference Voltage 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
SYMBOL
Vref Vref Vo Vo Vo Vo Vin Iadj Iadj Io(min) Io eN SVR Vd
TEST CONDITIONS
Vin-VO=2V, Io=10mA, Tj=25C 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 1000 hrs, Tj=125C Vin15V Vin-Vo=1.4 to 10V, Io=10 to 800/1000mA Vin=15V Vin-Vo=5V, Tj=25C B=10Hz to 10KHz, Tj=25C Io=40mA, f=120Hz, Tj=25C, Vin-Vo=3V, Vripple=1Vpp Io=100mA Io=500mA Io=800mA Io=1000mA Ta=25C, 30ms Pulse
MIN.
1.238 1.225
TYP.
1.25
MAX.
1.262 1.275 0.200 0.400
UNIT
V V % % % % V A A mA mA % dB V V V V %/W
0.035 0.10 0.50 0.3 60 1 2 950 0.003 75 1.00 1.05 1.10 1.15 0.01
15 120 5 5 1200
800 60
Thermal Regulation
1.10 1.15 1.20 1.25 0.10
TYPICAL APPLICATIONS
FIG.1 Negative Supply
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UNISONIC TECHNOLOGIES CO., LTD.
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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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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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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
LD1117/A ADJUSTABLE APPLICATION NOTE
The LD1117/A ADJUSTABLE has a thermal stabilized 1.250.012V reference voltage between the OUT and ADJ pins. IADJ is 60A typ. (120A max.) and IADJ is 1A typ. (5A max.). R1 is normally fixed to 120. 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 10F 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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UNISONIC TECHNOLOGIES CO., LTD.
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UTC LD1117/A LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Fig.1 Reference Voltge vs. Temperature
1.250 1.245 1.240 3.70 3.65 3.60
Fig.2 Output Voltage vs. Temperautre
VOUT SET WITH 1% RESISTORS
reference voltage (V)
Output Voltage(V)
1.235 1.230 1.225 1.220 1.215 1.210 1.205 1.200 -75 -50 -25 0 25 50 75 100 125 150 175
3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 -75 -50 -25 0 25
Vout=3.6V
Vout=3.3V
Note: LD1117 Only
50 75 100 125 150 175
Junction Temperature(C)
Junction Temperature(C)
Fig.3 Maximum Power Dissipation
10
8
TO-263 & TO-252 Power (W)
6
4
SOT-223
2
0 25 45 65 85 105 125
Case Temperature(C)
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UNISONIC TECHNOLOGIES CO., LTD.
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