BSR58LT1 JFET Chopper Transistor N−Channel − Depletion Features • Pb−Free Package is Available http://onsemi.com MAXIMUM RATINGS Rating 2 SOURCE Symbol Value Unit Drain −Gate Voltage VDG −40 Vdc Gate −Source Voltage VGS −35 Vdc Gate Current IG 50 mAdc Total Device Dissipation @ TA = 25°C Derate above 25°C PD 350 2.8 mW mW/° C Lead Temperature TL 300 °C TJ, Tstg −65 to +150 °C Operating and Storage Junction Temperature Range Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 3 GATE 1 DRAIN 3 SOT−23 CASE 318 STYLE 10 1 2 MARKING DIAGRAM ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) Characteristic Symbol Min Max Unit V(BR)GSS 40 − Vdc IGSS − − 1.0 nAdc VGS(off) −0.8 −4.0 Vdc ID(off) − 1.0 nAdc M6 = Device Code M = Date Code* G = Pb−Free Package (Note: Microdot may be in either location) IDSS 8.0 80 mAdc *Date Code orientation and/or overbar may vary depending upon manufacturing location. Static Drain−Source On Resistance (VDS = 0.1 Vdc) rDS(on) − 60 W Drain Gate and Source Gate On−Capacitance (VDS = VGS = 0, f = 1.0 MHz) Cdg(on) + Csg(on) − 28 pF Drain Gate Off−Capacitance (VGS = −10 Vdc, f = 1.0 MHz) Cdg(off) − 5.0 pF Source Gate Off−Capacitance (VGS = −10 Vdc, f = 1.0 MHz) Csg(off) − 5.0 pF OFF CHARACTERISTICS Gate −Source Breakdown Voltage (IG = −1.0 mAdc) Gate Reverse Current (VGS = −15 Vdc) Gate Source Cutoff Voltage (VDS = 5.0 Vdc, ID = 1.0 mAdc) Drain−Cutoff Current (VDS = 5.0 Vdc, VGS = −10 Vdc) ON CHARACTERISTICS Zero−Gate−Voltage Drain Current (Note 1) (VDS = 15 Vdc) August, 2005 − Rev. 1 ORDERING INFORMATION Device BSR58LT1 BSR58LT1G 1. Pulse Width = 300 ms, Duty Cycle = 3.0%. © Semiconductor Components Industries, LLC, 2005 M6M G G 1 Package Shipping† SOT−23 3000/Tape & Reel SOT−23 (Pb−Free) 3000/Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Publication Order Number: BSR58LT1/D BSR58LT1 TYPICAL SWITCHING CHARACTERISTICS 1000 TJ = 25°C 500 RK = RD′ 200 J111 J112 J113 100 500 VGS(off) = 12 V = 7.0 V = 5.0 V 50 20 10 RK = 0 5.0 RK = RD′ 200 t r , RISE TIME (ns) t d(on), TURN−ON DELAY TIME (ns) 1000 TJ = 25°C VGS(off) = 12 V = 7.0 V = 5.0 V 100 50 20 10 RK = 0 5.0 2.0 2.0 1.0 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 ID, DRAIN CURRENT (mA) 20 30 1.0 0.5 0.7 1.0 50 2.0 3.0 5.0 7.0 10 ID, DRAIN CURRENT (mA) Figure 1. Turn−On Delay Time 1000 1000 TJ = 25°C 500 J111 J112 J113 200 100 VGS(off) = 12 V = 7.0 V = 5.0 V RK = RD′ 200 20 10 RK = 0 5.0 30 50 TJ = 25°C 500 RK = RD′ 50 20 Figure 2. Rise Time t f , FALL TIME (ns) t d(off) , TURN−OFF DELAY TIME (ns) J111 J112 J113 100 J111 J112 J113 VGS(off) = 12 V = 7.0 V = 5.0 V 50 20 RK = 0 10 5.0 2.0 2.0 1.0 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 ID, DRAIN CURRENT (mA) 20 30 1.0 0.5 0.7 1.0 50 Figure 3. Turn−Off Delay Time 2.0 3.0 5.0 7.0 10 ID, DRAIN CURRENT (mA) 20 30 Figure 4. Fall Time NOTE 1 +VDD RD SET VDS(off) = 10 V INPUT RK RGEN 50 W INPUT PULSE tr ≤ 0.25 ns tf ≤ 0.5 ns PULSE WIDTH = 2.0 ms DUTY CYCLE ≤ 2.0% During the turn−on interval, Gate−Source Capacitance (Cgs) discharges OUTPUT through the series combination of RGen and RK. Cgd must discharge to 50 W VGEN RT The switching characteristics shown above were measured using a test circuit similar to Figure 5. At the beginning of the switching interval, the gate voltage is at Gate Supply Voltage (−VGG). The Drain−Source Voltage (VDS) is slightly lower than Drain Supply Voltage (VDD) due to the voltage divider. Thus Reverse Transfer Capacitance (Crss) or Gate−Drain Capacitance (Cgd) is charged to VGG + VDS. RGG 50 W VGG RGG & RK RD(RT ) 50) RDȀ + RD ) RT ) 50 Figure 5. Switching Time Test Circuit VDS(on) through RG and RK in series with the parallel combination of effective load impedance (R′D) and Drain−Source Resistance (rds). During the turn−off, this charge flow is reversed. Predicting turn−on time is somewhat difficult as the channel resistance rds is a function of the gate−source voltage. While Cgs discharges, VGS approaches zero and rds decreases. Since Cgd discharges through rds, turn−on time is non−linear. During turn−off, the situation is reversed with rds increasing as Cgd charges. The above switching curves show two impedance conditions; 1) RK is equal to RD, which simulates the switching behavior of cascaded stages where the driving source impedance is normally the load impedance of the previous stage, and 2) RK = 0 (low impedance) the driving source impedance is that of the generator. http://onsemi.com 2 50 20 15 J112 10 J111 10 J113 7.0 5.0 Cgs C, CAPACITANCE (pF) y fs, FORWARD TRANSFER ADMITTANCE (mmhos) BSR58LT1 Tchannel = 25°C VDS = 15 V 7.0 5.0 Cgd 3.0 2.0 3.0 Tchannel = 25°C (Cds IS NEGLIGIBLE) 1.5 2.0 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 ID, DRAIN CURRENT (mA) 20 30 1.0 0.03 0.05 0.1 50 Figure 6. Typical Forward Transfer Admittance IDSS = 10 160 mA 25 mA 50mA 75mA 100mA 80 0 Tchannel = 25°C 0 1.0 2.0 3.0 4.0 5.0 6.0 VGS, GATE−SOURCE VOLTAGE (VOLTS) 7.0 8.0 ID = 1.0 mA VGS = 0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 −70 Figure 8. Effect of Gate−Source Voltage On Drain−Source Resistance 90 9.0 8.0 7.0 rDS(on) @ VGS = 0 60 50 −10 20 50 80 110 Tchannel, CHANNEL TEMPERATURE (°C) 140 170 10 Tchannel = 25°C 80 70 −40 Figure 9. Effect of Temperature On Drain−Source On−State Resistance 6.0 VGS(off) 5.0 40 4.0 30 3.0 20 2.0 10 1.0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 IDSS, ZERO−GATE−VOLTAGE DRAIN CURRENT (mA) VGS, GATE−SOURCE VOLTAGE (VOLTS) rds(on), DRAIN−SOURCE ON−STATE RESISTANCE (OHMS) 100 30 2.0 125mA 120 40 10 Figure 7. Typical Capacitance rds(on), DRAIN−SOURCE ON−STATE RESISTANCE (NORMALIZED) rds(on), DRAIN−SOURCE ON−STATE RESISTANCE (OHMS) 200 0.3 0.5 1.0 3.0 5.0 VR, REVERSE VOLTAGE (VOLTS) NOTE 2 The Zero−Gate−Voltage Drain Current (IDSS), is the principle determinant of other J-FET characteristics. Figure 10 shows the relationship of Gate−Source Off Voltage (VGS(off) and Drain− Source On Resistance (rds(on)) to IDSS. Most of the devices will be within ±10% of the values shown in Figure 10. This data will be useful in predicting the characteristic variations for a given part number. For example: Unknown rds(on) and VGS range for an J112 The electrical characteristics table indicates that an J112 has an IDSS range of 25 to 75 mA. Figure 10, shows rds(on) = 52 W for IDSS = 25 mA and 30 W for IDSS = 75 mA. The corresponding VGS values are 2.2 V and 4.8 V. Figure 10. Effect of IDSS On Drain−Source Resistance and Gate−Source Voltage http://onsemi.com 3 BSR58LT1 PACKAGE DIMENSIONS SOT−23 (TO−236) CASE 318−08 ISSUE AL NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 4. 318−01 THRU −07 AND −09 OBSOLETE, NEW STANDARD 318−08. D 3 1 E 2 HE DIM A A1 b c D E e L HE e A b A1 C L MIN 0.89 0.01 0.37 0.09 2.80 1.20 1.78 0.35 2.10 MILLIMETERS NOM MAX 1.00 1.11 0.06 0.10 0.44 0.50 0.13 0.18 2.90 3.04 1.30 1.40 1.90 2.04 0.54 0.69 2.40 2.64 MIN 0.035 0.001 0.015 0.003 0.110 0.047 0.070 0.014 0.083 INCHES NOM 0.040 0.002 0.018 0.005 0.114 0.051 0.075 0.021 0.094 MAX 0.044 0.004 0.020 0.007 0.120 0.055 0.081 0.029 0.104 STYLE 10: PIN 1. DRAIN 2. SOURCE 3. GATE SOLDERING FOOTPRINT* 0.95 0.037 0.95 0.037 2.0 0.079 0.9 0.035 0.8 0.031 SCALE 10:1 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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