JAN117K资料

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SG117A/SG217A/SG317A

SG117/SG217/SG317

1.5 AMP THREE TERMINAL

ADJUSTABLE VOLTAGE REGULATOR

DESCRIPTION

The SG117A Series are 3-terminal positive adjustable voltageregulators which offer improved performance over the original 117design. A major feature of the SG117A is reference voltagetolerance guaranteed within ± 1%, allowing an overall power supplytolerance to be better than 3% using inexpensive 1% resistors. Lineand load regulation performance has been improved as well.Additionally, the SG117A reference voltage is guaranteed not toexceed 2% when operating over the full load, line and powerdissipation conditions. The SG117A adjustable regulators offer animproved solution for all positive voltage regulator requirementswith load currents up to 1.5A.

FEATURES

•••••

1% output voltage tolerance0.01%/V line regulation0.3% load regulationMin. 1.5A output current

Available in hermetic TO-220

HIGH RELIABILITY FEATURES-SG117A/SG117

♦Available to MIL-STD-883 and DESC SMD♦MIL-M38510/11704BYA - JAN117K♦MIL-M38510/11703BXA - JAN117T♦LMI level \"S\" processing available

SCHEMATIC DIAGRAM

2/93 Rev 1.1 2/94

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 8-8121 ∞ FAX: (714) 3-2570

LINFINITY Microelectronics Inc.

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SG117A/SG117 SERIES

ABSOLUTE MAXIMUM RATINGS (Note 1)Power Dissipation ........................................Internally LimitedInput to Output Voltage Differential ................................. 40VStorage Temperature Range ..........................-65°C to 150°CNote 1. Exceeding these ratings could cause damage to the device.Operating Junction TemperatureHermetic (K, R, T, L, IG-Packages) ............................150°CLead Temperature (Soldering, 10 Seconds) ..............300°CTHERMAL DATAK Package:Thermal Resistance-Junction to Case, θJC................. 3.0°C/WThermal Resistance-Junction to Ambient, θJA..............35°C/WR Package:Thermal Resistance-Junction to Case, θJC................. 5.0°C/WThermal Resistance-Junction to Ambient, θJA............. 40°C/WT Package:Thermal Resistance-Junction to Case, θJC.................. 15°C/WThermal Resistance-Junction to Ambient, θJA........... 120°C/WIG Package:Thermal Resistance-Junction to Case, θJC................. 3.5°C/WThermal Resistance-Junction to Ambient, θJA............. 42°C/WL Package:Thermal Resistance-Junction to Case, θJC.................. 35°C/WThermal Resistance-Junction to Ambient, θJA........... 120°C/WNote A.Junction Temperature Calculation: TJ = TA + (PD x θJA).Note B.The above numbers for θJC are maximums for the limitingthermal resistance of the package in a standard mount-ing configuration. The θJA numbers are meant to beguidelines for the thermal performance of the device/pc-board system. All of the above assume no ambientairflow.RECOMMENDED OPERATING CONDITIONS (Note 2 & 3)Input Voltage Range ..............................(VOUT + 3.5V) to 37VOperating Junction Temperature RangeSG117A/SG117 .........................................-55°C to 150°CSG217A/SG217 .........................................-25°C to 150°CSG317A/SG317 ............................................0°C to 125°CNote 2.Range over which the device is functional.Note 3.These ratings are applicable for junction temperatures of less than 150°C.ELECTRICAL CHARACTERISTICS(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG117A/SG117 with -55°C ≤ TA ≤ 125°C, SG217A/SG217 with -25°C ≤ TA ≤ 150°C, SG 317A/SG317 with 0°C ≤ TA ≤ 125°C, VIN - VOUT = 5.0V , and for IOUT = 500mA (K, R, and IG), and IOUT = 100mA(T and L packages). Although power dissipation is internally limited, these specifications are applicable for power dissipations of 2W for the T and Lpackages, and 20W for the K, R, and IG packages. IMAX is 1.5A for the K, R, and IG packages and 500mA for the T and L packages. Low duty cyclepulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)ParameterReference VoltageTest ConditionsIOUT = 10mA TA = 25°C3V ≤ (VIN - VOUT) ≤ 40V, P ≤ PMAX,10mA ≤ IOUT ≤ IMAX3V ≤ (VIN - VOUT) ≤ 40V, IL = 10mATA = 25°CTA = TMIN to TMAX10mA ≤ IOUT ≤ IMAXVOUT ≤ 5V, TA = 25°CVOUT ≥ 5V, TA = 25°CVOUT ≤ 5VVOUT ≥ 5VTA = 25°C, 20ms pulseVOUT = 10V, f =120HzCADJ = 1µF, TA = 25°CCADJ = 10µF10mA ≤ IOUT ≤ IMAX , 2.5V ≤ (VIN - VOUT) ≤ 40VSG117A/SG217ASG117/SG217Min.Typ.Max.Min.Typ.Max.1.2381.2501.2621.2251.2501.2701.200.0050.010.010.021550.30.1205010.30.0020.026580500.21.250.010.0250.1200.30.036580500.21.300.020.05150.35010.07UnitsVV%/V%/VmV%mV%%/WdBdBµAµALine Regulation (Note 4)Load Regulation (Note 4)Thermal Regulation (Note 5)Ripple RejectionAdjust Pin CurrentAdjust Pin Current Change6666100510052/93 Rev 1.1 2/94

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 8-8121 ∞ FAX: (714) 3-2570

LINFINITY Microelectronics Inc.

元器件交易网www.cecb2b.com

SG117A/SG117 SERIES

ELECTRICAL CHARACTERISTICS (continued)ParameterMinimum Load CurrentCurrent LimitTest Conditions(VIN - VOUT) = 40V(VIN - VOUT) ≤ 15VK, P, R, IG PackagesT, L Packages(VIN - VOUT) = 40V, TJ = 25°CK, P, R, IG PackagesT, L PackagesTA = 125°C, 1000 HoursTA = 25°C, 10Hz ≤ f ≤ 10 KHz (Note 5)SG117/SG217SG117A/SG217AMin.Typ.Max.Min.Typ.Max.53.53.551.50.50.30.152.20.80.40.210.30.0011.50.50.30.15212.20.80.40.210.30.001UnitsmAAAAA%%%Temperature Stability (Note 5)Long Term Stability (Note 5)RMS Output Noise (% of VOUT)1ParameterReference VoltageLine Regulation (Note 4)Test ConditionsIOUT = 10mA TA = 25°C3V ≤ (VIN - VOUT) ≤ 40V, P ≤ PMAX,10mA ≤ IOUT ≤ IMAX3V ≤ (VIN - VOUT) ≤ 40V, IL = 10mATA = 25°CTA = TMIN to TMAX10mA ≤ IOUT ≤ IMAXVOUT ≤ 5V, TA = 25°CVOUT ≥ 5V, TA = 25°CVOUT ≤ 5VVOUT ≥ 5VTA = 25°C, 20ms pulseVOUT = 10V, f =120HzCADJ = 1µF, TA = 25°CCADJ = 10µFTA = 25°C10mA ≤ IOUT ≤ IMAX , 2.5V ≤ (VIN - VOUT) ≤ 40V(VIN - VOUT) = 40V(VIN - VOUT) ≤ 15VK, P, R, IG PackagesT, L Packages(VIN - VOUT) = 40V, TJ = 25°CK, P, R, IG PackagesT, L PackagesTA = 125°CTA = 25°C, 10Hz ≤ f ≤ 10KHz (Note 5)SG317ASG317Min.Typ.Max.Min.Typ.Max.1.2381.2501.2621.2251.2501.2701.200.0050.010.010.022550.10.550200.310.0020.026580500.23.52.20.80.40.210.30.0011.250.010.0250.1200.30.036580500.23.52.20.80.40.210.30.0011.300.040.07250.5701.50.07UnitsVV%/V%/VmV%mV%%/WdBdBµAµAmAAAAA%%%Load Regulation (Note 4)Thermal Regulation (Note 5)Ripple Rejection66661005101.50.50.15.07521Adjust Pin CurrentAdjust Pin Current ChangeMinimum Load CurrentCurrent Limit1005101.50.50.15.075Temperature Stability (Note 5)Long Term Stability (Note 5)RMS Output Noise (% of VOUT)1Note4.Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due toheating effects are covered under the specification for thermal regulation.Note 5. These parameters, although guaranteed, are not tested in production.2/93 Rev 1.1 2/94

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 8-8121 ∞ FAX: (714) 3-2570

LINFINITY Microelectronics Inc.

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SG117A/SG117 SERIES

CHARACTERISTIC CURVES

FIGURE 1.

OUTPUT VOLTAGE DEVIATION VS. TEMPERATURE

FIGURE 2.

OUTPUT CURRENT VS. INPUT/OUTPUTDIFFERENTIAL

FIGURE 3.

ADJUSTMENT CURRENT VS. TEMPERATURE

FIGURE 4.

INPUT/OUTPUT DIFFERENTIAL VS. TEMPERATUREFIGURE 5.

REFERENCE VOLTAGE VS. TEMPERATURE

FIGURE 6.

QUISCENT CURRENT VS. INPUT/OUTPUTDIFFERENTIAL

FIGURE 7.

RIPPLE REJECTION VS. OUTPUT VOLTAGEFIGURE 8.

RIPPLE REJECTION VS. FREQUENCYFIGURE 9.

RIPPLE REJECTION VS. OUTPUT CURRENT

2/93 Rev 1.1 2/94

11861 Western Avenue ∞ Garden Grove, CA 92841

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LINFINITY Microelectronics Inc.

元器件交易网www.cecb2b.com

SG117A/SG117 SERIES

CHARACTERISTIC CURVES (continued)

FIGURE 10.

OUTPUT IMPEDANCE VS. FEQUENCYFIGURE 11.

LINE TRANSIENT RESPONSEFIGURE 12.

LOAD TRANSIENT RESPONSE

FIGURE 13.

OUTPUT IMPEDANCE VS. FREQUENCYFIGURE 14.

LINE TRANSIENT RESPONSEFIGURE 15.

LOAD TRANSIENT RESPONSE

FIGURE 16.

OUTPUT VOLTAGE ERROR

2/93 Rev 1.1 2/94

11861 Western Avenue ∞ Garden Grove, CA 92841

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SG117A/SG117 SERIES

APPLICATION INFORMATION

GENERAL

The SG117A develops a 1.25V reference voltage between theoutput and the adjustable terminal (see Figure 1). By placing aresistor, R1 between these two terminals, a constant current iscaused to flow through R1 and down through R2 to set the overalloutput voltage, Normally this current is the specified minimumload current of 5mA or 10mA.

For convenience, a table of standard 1% resistor values is shownbelow.

Table of ½% and 1% Standard Resistance Values

FIGURE 17 - BASIC REGULATOR CIRCUIT

1.001.021.051.071.101.131.151.181.211.241.271.301.331.371.401.431.471.501.541.581.621.651.691.741.781.821.871.911.962.002.052.102.152.212.262.322.372.432.492.552.612.672.742.802.872.943.013.093.163.243.323.403.483.573.653.743.833.924.024.124.224.324.424.534.4.754.874.995.115.235.365.495.625.765.906.046.196.346.496.656.816.987.157.327.507.687.878.068.258.458.668.879.099.319.539.76

Because IADJ is very small and constant when compared with thecurrent through R1, it represents a small error and can usually beignored.

It is easily seen from the above equation, that even if the resistorswere of exact value, the accuracy of the output is limited by theaccuracy of VREF. Earlier adjustable regulators had a referencetolerance of ±4%. This tolerance is dangerously close to the ±5%supply tolerance required in many logic and analog systems.Further, many 1% resistors can drift 0.01%°C adding another 1%to the output voltage tolerance.

For example, using 2% resistors and ±4% tolerance for VREF,calculations will show that the expected range of a 5V regulatordesign would be 4.66V ≤ VOUT ≤ 5.36V or approximately ±7%. Ifthe same example were used for a 15V regulator, the expectedtolerance would be ±8%. With these results most applicationsrequire some method of trimming, usually a trim pot. This solutionis expensive and not conducive to volume production.

One of the enhancements of Silicon General’s adjustable regu-lators over existing devices is tightened initial tolerance. Thisallows relatively inexpensive 1% or 2% film resistors to be usedfor R1 and R2 while setting output voltage within an acceptabletolerance range.

With a guaranteed 1% reference, a 5V power supply design,using ±2% resistors, would have a worse case manufacturingtolerance of ±4%. If 1% resistors were used, the tolerance woulddrop to ±2.5%. A plot of the worst case output voltage toleranceas a function of resistor tolerance is shown on the front page.

Standard Resistance Values are obtained from the DecadeTable by multiplying by multiples of 10. As an example:1.21can represent 1.21Ω, 12.1Ω, 121Ω, 1.21KΩ etc.

FIGURE 18 - CONNECTIONS FOR BEST LOAD REGULATION

FIGURE 19 - 1.2V-25V ADJUSTABLE REGULATOR

2/93 Rev 1.1 2/94

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SG117A/SG117 SERIES

APPLICATION INFORMATION (continued)

BYPASS CAPACITORS

Input bypassing using a 1µF tantalum or 25µF electrolytic isrecommended when the input filter capacitors are more than 5inches from the device. A 0.1µF bypass capacitor on theADJUST pin is required if the load current varies by more than 1A/µsec. Improved ripple rejection (80dB) can be accomplished byadding a 10µF capacitor from the adjust pin to ground. Forimproved AC transient response and to prevent the possibility ofoscillation due to unknown reactive load, a 1µF capacitor is alsorecommended at the output. Because of their low impedance athigh frequencies, the best type of capacitor to use is solidtantalum.

FIGURE 22 - 5V REGULATOR WITH SHUT DOWN

FIGURE 20 - REMOTE SENSING

FIGURE 23 - 21V PROGRAMMING SUPPLY FOR UV PROM/EEPROM

FIGURE 21 - IMPROVING RIPPLE REJECTION

LOAD REGULATION

Because the SG117A is a three-terminal device, it is not possibleto provide true remote load sensing. Load regulation will belimited by the resistance of the wire connecting the regulator tothe load. For the data sheet specification, regulation is measuredat the bottom of the package. Negative side sensing is a trueKelvin connection, with the bottom of the output divider returnedto the negative side of the load. Although it may not be immedi-ately obvious, best load regulation is obtained when the top of thedivider is connected directly to the case, not to the load. This isillustrated in Figure 18. If R1 were connected to the load, theeffective resistance between the regulator and the load would be

RP X

FIGURE 24 - 2816 EEPROM SUPPLY PROGRAMMER FOR READ/WRITE CONTROL

( ),R = Parasitic Line Resistance.

R2 + R1

Connected as shown, RP is not multiplied by the divider ratio. RPis about 0.004Ω per foot using 16 gauge wire. This translates to4mV/ft. at 1A load current, so it is important to keep the positivelead between regulator and load as short as possible.

FIGURE 25 - TEMPERATURE COMPENSATED LEAD ACID BATTERY CHARGER

2/93 Rev 1.1 2/94

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SG117A/SG117 SERIES

CONNECTION DIAGRAMS & ORDERING INFORMATION (See Notes Below)

Package

3-TERMINAL TO-3METAL CANK-PACKAGE

Part No.SG117AK/883BSG117AK/DESCSG117AKSG217AKSG317AKSG117K/883BJAN117K

SG117K/DESCSG117KSG217KSG317KSG117AR/883BSG117AR/DESCSG117ARSG217ARSG317ARSG117R/883BSG117AR/DESCSG117RSG217RSG317RSG117AT/883BSG117AT/DESCSG117ATSG217ATSG317ATSG117T/883BJAN117T

SG117T/DESCSG117TSG217TSG317T

Ambient

Temperature Range-55°C to 125°C-55°C to 125°C-55°C to 125°C-25°C to 85°C0°C to 70°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-25°C to 85°C0°C to 70°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-25°C to 85°C0°C to 70°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-25°C to 85°C0°C to 70°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-25°C to 85°C0°C to 70°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-25°C to 85°C0°C to 70°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C

Connection Diagram

ADJUSTMENT

CASE IS VOUT

VIN

3-TERMINAL TO-66METAL CANR-PACKAGE

ADJUSTMENT

CASE IS VOUT

VIN

3-PIN TO-39 METAL CANT-PACKAGE

VIN

ADJUST

VOUT

CASE IS VOUT

3-PIN HERMETIC TO-257IG-PACKAGE (Isolated)

SG117AIG/883BSG117AIG/DESCSG117AIGSG117IG/883BSG117IG/DESCSG117IGSG117AL/883BSG117AL/DESCSG117ALSG117L/883BSG117L/DESCSG117L

VINVOUT

ADJUST

(TAB IS VOUT)

FOR G-PACKAGE ONLY

20-PIN CERAMIC (LCC)LEADLESS CHIP CARRIERL- PACKAGE

(Note 4)

1.2.3.4.5.6.7.8.9.10.VOUT SENSEN.C.N.C.4N.C.5VIN

N.C.

N.C.N.C.ADJUST

3212019

1817161514

910111213

11.12.13.14.15.16.17.18.19.20.

N.C.N.C.N.C.N.C.N.C.N.C.N.C.N.C.N.C.VOUT

Note1. Contact factory for JAN and DESC product availability.3.Both inputs and outputs must be externally connected together at the device

2. All parts are viewed from the top.terminals.

4.For normal operation the SENSE pin must be externally connected to the load.

2/93 Rev 1.1 2/94

11861 Western Avenue ∞ Garden Grove, CA 92841

(714) 8-8121 ∞ FAX: (714) 3-2570

LINFINITY Microelectronics Inc.

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