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| Solved by SP317L TM 3-Terminal Adjustable Voltage Regulator Features * * * * * * * * Adjustable Output Down to 1.2V Guaranteed 100mA Output Current Output Short Circuit Protected Line Regulation: 0.01%/V Load Regulation: 0.1% Current Limit Constant with Temperature 70 dB Ripple Rejection Available in Lead Free, RoHS Compliant Package NSOIC-8 Package VIN VOUT VOUT ADJ 2 3 8 7 6 NC VOUT VOUT NC Applications * * * * High Efficiency Linear Regulators Post Regulation for Switching Supplies Microprocessor Power Supply Mother Board I/O Power Supply general Description The SP317L is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V to 12V output range. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. In addition to higher performance than fixed regulators, SP317L employs overload protection. Included on the chip are current limiting and thermal overload protection. All overload protection circuitry remains fully functional even when the adjustment terminal is disconnected. The SP317L is available in standard TO-92 and NSOIC-8 packages. TO-92 NSOIC-8 Figure . Package Types of SP317L Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation Pin Configuration N1 Package (TO-92) VIN VOUT VOUT ADJ N Package (Narrow SOIC-8) 2 3 8 7 6 NC VOUT VOUT NC 3 2 1 VIN VOUT ADJ Top View Figure 2. Pin Configuration of SP317L Functional Block Diagram VIN ADJ VOUT Figure 3. Functional Block Diagram of SP317L Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 2 Absolute maximum Ratings (Note 1) Parameter Input Voltage Input-Output Voltage Differential Operating Junction Temperature Range Storage Temperature Range Power Dissipation Lead Temperature (Soldering, 4 sec.) ESD (Machine Model) TJ TSTG PD TLEAD ESD Symbol VIN Value 20 15 150 -65 to 150 700 260 250 Unit V V o o C C mW o C V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Input Voltage Operating Junction Temperature Range Symbol VIN TJ 0 Min Max 15 125 Unit V o C Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 3 Electrical Characteristics o C TJ 125oC, VIN -VOUT = 5V, IOUT = 40mA, PD Symbol mW, unless otherwise specified. Min 15V 20mA Typ 0.01 0.02 0.1 0.3 0.04 50 Max 0.04 0.07 0.5 1.5 0.2 100 5 1.30 300 5 Unit %/V %/V % % %/W A A V mA mA dB % 1 % % o Parameter Conditions TJ = 25oC, 3V (VIN -VOUT) IL 20mA (Note 2) 3V (VIN-VOUT) (Note 2) TJ = 25oC, 5mA (Note 2) 5mA IOUT 15V, IL IOUT Line Regulation RegLINE 100mA Load Regulation Thermal Regulation Adjust Pin Current Adjust Pin Current Change Reference Voltage Current Limit Minimum Load Current Ripple Rejection Temperature Stability Long Term Stability RMS Output Noise, % of VOUT Thermal Resistance Junction to Case RegLOAD 100mA (Note 2) TJ = 25oC, 10ms Pulse 5mA IL 100mA 3V (VIN-VOUT) 15V VREF ILIMIT 3V (VIN -VOUT) 15V 5mA IOUT 100mA 3V (VIN -VOUT) 3V (VIN -VOUT) 13V 13V 1.20 100 0.2 1.25 200 3.5 62 60 70 0.65 0.3 z 0.003 185 175 VOUT = 10V, f = 120Hz, CADJ = 0 F VOUT = 10V, f = 120Hz, CADJ = 10 F 0oC J o C TJ=125oC, 1000 Hours TJ = 25oC, 10Hz TO-92 NSOIC-8 f C/W Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification of thermal regulation. Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation Typical Performance Characteristics 0.06 .2 0.0 .20 Output Voltage Deviation (V) 0.02 Output Voltage (V) IO=0mA .23 0.00 .230 -0.02 IO=00mA SP317L VIN=0.2V VOUT=.2V - -2 0 2 0 o .22 -0.0 .220 SP317L IO=0mA -0.06 7 00 2 .2 8 0 2 6 8 20 Temperature ( C) Input Voltage (V) Figure . Load Regulation vs. Temperature Figure . Output Voltage vs. Input Voltage .26 .260 IO=0mA 2 IO=0mA Reference Voltage(V) Adjust Pin Current ( A) .2 .20 .2 .20 .23 .230 - IO=00mA 0 IO=00mA 8 SP317L VIN=0.2V VOUT=.2V -2 0 2 0 O 6 SP317L VIN=0.2V VOUT=.2V 7 00 2 2 Temperature( C) - -2 0 2 0 o 7 00 2 Temperature ( C) Figure 6. Reference Voltage vs. Temperature Figure 7. Adjustment Current vs. Temperature Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation Typical Performance Characteristics (Continued) . .8 .7 .6 . . .3 .2 6 Input Output Differential (V) Quiescent Current (mA) IO=00mA 3 IO=0mA 2 SP317L VOUT=.2V -2 0 2 0 o SP317L VOUT=.2V TA=2 C o - 7 00 2 0 2 6 8 0 2 6 Temperature ( C) Input-Output Differential (V) Figure 8. Dropout Voltage vs. Temperature Figure . Minimum Operating Current 80 70 80 C ADJ=0 F C ADJ=0 F 70 Ripple Rejection (dB) Ripple Rejection (dB) 60 0 0 30 20 0 0 C ADJ=0 F 60 0 0 30 20 0 0 00 C ADJ=0 F SP317L V INVOUT = V IO= 0mA f = 20Hz o TA= 2 C 2 6 8 0 2 6 SP317L V IN=0.2V V OUT =.2V IO=0mA T A=2 C o 000 0000 00000 Output Voltage (V) Frequency (Hz) Figure 0. Ripple Rejection vs. Output Voltage Figure . Ripple Rejection vs. Frequency Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 6 Typical Performance Characteristics (Continued) Output Voltage Deviation V OUT Output Voltage Deviation Load Current Input Voltage Change SP317L VIN=0.2V VOUT=.2V CIN=0. F CL= F TA=2oC IOUT (mA to 00mA) 50mA V OUT SP317L IO =0mA V OUT =.2V C IN =0. F C L = F T A =2 oC V IN (0.2V to .2V) Figure 2. Load Transient Response Figure 3. Line Transient Response Power=W Dissipation Output Voltage Deviation VOUT SP317L V OUT=.2V C IN=0. F C L= F TA=2oC 1W Figure . Thermal Regulation Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 7 Typical Application SP317L VIN 7V ~ 8V VIN C 0. F R2 720 ADJ VOUT R 20 VOUT V C2 0. F R3 K TTL VIN V ~ 8V C 000 F (Note ) SP317L VIN ADJ VOUT R 20 R2 .K R3 00 R 0 (Note 3) Q 2N22 Q 2N2222 Figure . V Logic Regulator with Electronic Shutdown (Minimum output = .2V) Figure 6. Current Limited 6V Charger Note 3: Sets peak current, IPeak= 0.6V/R Note : 000 F is recommended to filter out any input transients. SP317L V C 0. F VIN VIN ADJ VOUT R 2K % VOUT 0V SP317L VIN C2 0. F C 0 F R2 K VIN ADJ VOUT R 20 D N002 C3 F Solid Tantalum VOUT D LM32 R3 267 % R2 .K % Figure 7. High Stability 0V Regulator Figure 8. Adjustable Regulator with Improved Ripple Rejection Note : Discharge C if output is shorted to ground. (c) 2006 Sipex Corporation Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator 8 SP317L + VIN ADJ VOUT VOUT = .2V(R2/R +) R 20 R2 2K R=2R3=22 Q 2N22 R3 0 VIN C2 0. F VIN SP317L ADJ VOUT R 20 R3 0k N002 R 2.7k 2N20 C 2 F VOUT V Transformer Rectifiers and Filter Capacitor Figure . Adjustable Regulator with Current Limit Note 6: Short circuit current is approximately 600mV/R3 or 60mA Note 7: At 2.mA output only 3/V of drop occurs in R3 and R. Figure 20. Slow Turn-on V Regulator Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation APPLICATION INFORmATION In operation, the SP37L develops a nominal .2V reference voltage, VREF, between the output and the adjustment terminal. The reference voltage is impressed across program resistor R and, since the voltage is constant, a constant current I then flows through the output set resistor R2, giving an output voltage of: Vout = Vref * { + R2/R} + Iadj(R2) Since the 100A current from the adjustment terminal represents an error term, the SP37L was designed to minimize IADJ and make it very constant with line and load changes. To do this, all quiescent operating current is returned to the output establishing a minimum load current requirement. If there is insufficient load on the output, the output will rise. SP317L VIN V IN ADJ V REF R1 V OUT cause excessive ringing. This occurs with values between 00pF and 000pF. A F solid tantalum (or 2F aluminum electrolytic) on the output swamps this effect and insures stability. An input bypass capacitor is recommended in case the regulator is more than 6 inches away from the usual large filter capacitor. A 0. F disc or F solid tantalum on the input is suitable input bypassing for almost all applications. The device is more sensitive to the absence of input bypassing when adjustment or output capacitors are used, but the above values will eliminate the possibility of problems. The adjustment terminal can be bypassed to ground on the SP37L to improve ripple rejection and noise. This bypass capacitor prevents ripple and noise from being amplified as the output voltage is increased. With a 0F bypass capacitor 80dB ripple rejection is obtainable at any output level. Increases over 0F do not appreciably improve the ripple rejection at frequencies above 20Hz. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the device. In general, the best type of capacitors to use is solid tantalum. Solid tantalum capacitors have low impedance even at high frequencies. Depending upon capacitor construction, it takes about 2F in aluminum electrolytic to equal F solid tantalum at high frequencies. Ceramic capacitors are also good at high frequencies; but some types have a large decrease in capacitance at frequencies around 0.MHz. For this reason, a 0.0F disc may seem to work better than a 0.F disc as a bypass. I1 V OUT I ADJ R2 Figure 21: R1, R2 and Quiescent Current EXTERNAL CAPACITORS Although the SP37L is stable with no output capacitors, like any feedback circuit, certain values of external capacitance can Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 0 PACkAgE: 3 PIN TO-92 mechanical Dimensions TO-92 Unit: mm(inch) .00(0.03) .00(0.0) 3.30(0.3) MIN 0.360(0.0) 0.0(0.020) 0.000(0.000) .600(0.063) MAX .00(0.73) .700(0.8) 0.380(0.0) 3.300(0.30) .300(0.6) .700(0.8) 3.700(0.6) 0.380(0.0) 0.0(0.022) .270(0.00) TYP 2.0(0.06) 2.60(0.0) Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator .00(0.) .00(0.7) (c) 2006 Sipex Corporation PACkAgE: 8 PIN NSOIC mechanical Dimensions (Continued) NSOIC-8 Unit: mm(inch) .800(0.8) .000(0.7) 7 .30(0.03) .70(0.06) 0.320(0.03) 8 7 0.67(0.027) 0.72(0.02) 8 D .800(0.228) 6.200(0.2) D 20: .270(0.00) TYP 0.00(0.00) 0.800(0.03) 0.200(0.008) R0.0(0.006) 0.300(0.02) .000(0.03) 3.800(0.0) .000(0.7) 0 8 0.330(0.03) 0.0(0.020) 0.00(0.03) R0.0(0.006) 0.0(0.007) 0.20(0.00) Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 2 ORDERINg INFORmATION Ordering Information SP317L Part Number Package N 1: TO-92 N: NSOIC-8 /TR: Tape and Reel or Ammo Blank: Tube or Bulk -L: Lead Free and RoHS Compliant Sipex Corporation's Pb-free products, as designated with "-L" suffix in the part number, are RoHS compliant. Part Number SP37LN-L/TR SP37LN-L SP37LN-L/TR Temperature Voltage Output Pin Package Range Tolerance Voltage Count 0C to +2C 0C to +2C 0C to +2C .0% .0% .0% Adj Adj Adj TO-2 NSOIC 8 NSOIC 8 3 8 8 Packing Type 2,000/AMMO 00/TUBE 2,00/TR Solved by Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 03 TEL: (08) 3-700 FAX: (08) 3-7600 TM Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Date: 8//06 Rev H SP37L 3-Terminal 00mA Adjustable Voltage Regulator (c) 2006 Sipex Corporation 3 |
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