FQD45N03L N-Channel Logic Level PWM Optimized Power MOSFET General Description Features This device employs a new advanced MOSFET technology and features low gate charge while maintaining low onresistance. • Fast switching Optimized for switching applications, this device improves the overall efficiency of DC/DC converters and allows operation to higher switching frequencies. • rDS(ON) = 0.028Ω (Typ), VGS = 5V Applications • Qgd (Typ) =3nC • DC/DC converters • CISS (Typ) =970pF • rDS(ON) = 0.018Ω (Typ), VGS = 10V • Qg (Typ) = 9nC, VGS = 5V D DRAIN (FLANGE) GATE SOURCE G TO-252 S MOSFET Maximum Ratings TC=25°C unless otherwise noted Symbol VDSS Parameter Drain to Source Voltage VGS Gate to Source Voltage Ratings 30 Units V ±20 V Drain Current ID Continuous (TC = 25oC, VGS = 10V) 20 A Continuous (TC = 100oC, VGS = 4.5V) 20 A 8 A Continuous (TC = 25oC, VGS = 10V, RθJA=52oC) Pulsed PD Power dissipation Derate above 25oC TJ, TSTG Operating and Storage Temperature Figure 4 A 41 0.33 W W/oC o -55 to 150 C Thermal Characteristics RθJC Thermal Resistance Junction to Case TO-252 3 RθJA Thermal Resistance Junction to Ambient TO-252 100 RθJA Thermal Resistance Junction to Ambient TO-252, 1in2 copper pad area 52 o C/W oC/W o C/W Package Marking and Ordering Information Device Marking FQD45N03L ©2004 Fairchild Semiconductor Corporation Device FQD45N03L Package TO-252AA Reel Size 330mm Tape Width 16mm Quantity 2500 units FQD45N03L Rev. B1 FQD45N03L March 2004 Symbol Parameter Test Conditions Min Typ Max Units 30 - - - V - 1 - - 250 µA - - ±100 nA Off Characteristics BVDSS Drain to Source Breakdown Voltage IDSS Zero Gate Voltage Drain Current IGSS Gate to Source Leakage Current ID = 250µA, VGS = 0V VDS = 25V VGS = 0V TC= 150oC VGS = ±20V On Characteristics VGS(TH) rDS(ON) Gate to Source Threshold Voltage Drain to Source On Resistance VGS = VDS, ID = 250µA 1 - 3 V ID = 20A, VGS = 10V - 0.018 0.023 ID = 18A, VGS = 4.5V - 0.028 0.033 Ω - 970 - - 205 - pF - 80 - pF Dynamic Characteristics CISS Input Capacitance COSS Output Capacitance CRSS Reverse Transfer Capacitance Qg(TOT) Total Gate Charge at 10V VGS = 0V to 10V - 18 30 nC Qg(5) Total Gate Charge at 5V - 9 16 nC Qg(TH) Threshold Gate Charge - 1.0 1.5 nC Qgs Gate to Source Gate Charge VGS = 0V to 5V VDD = 15V VGS = 0V to 1V ID = 18A Ig = 1.0mA - 3.5 - nC Qgd Gate to Drain “Miller” Charge - 3.0 - nC Switching Characteristics VDS = 15V, VGS = 0V, f = 1MHz pF (VGS = 4.5V) tON Turn-On Time - - 87 ns td(ON) Turn-On Delay Time - 11 - ns tr Rise Time - 47 - ns td(OFF) Turn-Off Delay Time - 24 - ns tf Fall Time - 28 - ns tOFF Turn-Off Time - - 78 ns Switching Characteristics VDD = 15V, ID = 8A VGS = 5V, RGS = 16Ω (VGS = 10V) tON Turn-On Time - - 54 ns td(ON) Turn-On Delay Time - 7 - ns tr Rise Time - 29 - ns td(OFF) Turn-Off Delay Time - 45 - ns tf Fall Time - 27 - ns tOFF Turn-Off Time - - 108 ns 180 - - µs ISD = 18A - - 1.25 V ISD = 9A - - 1.0 V VDD = 15V, ID = 8A VGS = 10V, RGS = 16Ω Unclamped Inductive Switching tav Avalanche Time ID = 2.7A, L = 3mH Drain-Source Diode Characteristics VSD Source to Drain Diode Voltage trr Reverse Recovery Time ISD= 18A, dISD/dt = 100A/µs - - 58 ns QRR Reverse Recovered Charge ISD= 18A, dISD/dt = 100A/µs - - 70 nC ©2004 Fairchild Semiconductor Corporation FQD45N03L Rev. B1 FQD45N03L Electrical Characteristics TC = 25°C unless otherwise noted TC = 25°C unless otherwise noted 25 1.2 POWER DISSIPATION MULTIPLIER FQD45N03L Typical Characteristic ID, DRAIN CURRENT (A) 1.0 0.8 0.6 0.4 20 VGS = 10V 15 VGS = 5V 10 5 0.2 0 0 0 25 50 75 100 125 150 25 50 TA , AMBIENT TEMPERATURE (oC) Figure 1. Normalized Power Dissipation vs Ambient Temperature 75 100 125 TC, CASE TEMPERATURE (oC) 150 Figure 2. Maximum Continuous Drain Current vs Case Temperature 2 ZθJC, NORMALIZED THERMAL IMPEDANCE 1 DUTY CYCLE - DESCENDING ORDER 0.5 0.2 0.1 0.05 0.02 0.01 PDM 0.1 t1 t2 SINGLE PULSE NOTES: DUTY FACTOR: D = t1/t2 PEAK TJ = PDM x ZθJC x RθJC + TC 0.01 10-5 10-4 10-3 10-2 10-1 100 101 t, RECTANGULAR PULSE DURATION (s) Figure 3. Normalized Maximum Transient Thermal Impedance 500 TC = 25oC IDM, PEAK CURRENT (A) TRANSCONDUCTANCE MAY LIMIT CURRENT IN THIS REGION FOR TEMPERATURES ABOVE 25oC DERATE PEAK CURRENT AS FOLLOWS: VGS = 10V 150 - TC I = I25 100 125 VGS = 5V 10 10-5 10-4 10-3 10-2 t, PULSE WIDTH (s) 10-1 100 101 Figure 4. Peak Current Capability ©2004 Fairchild Semiconductor Corporation FQD45N03L Rev. B1 FQD45N03L Typical Characteristic (Continued) TC = 25°C unless otherwise noted 50 50 PULSE DURATION = 80µs ID, DRAIN CURRENT (A) 40 ID , DRAIN CURRENT (A) VGS = 10V DUTY CYCLE = 0.5% MAX VDD = 15V 30 TJ = 150oC 20 TJ = 25oC 10 40 VGS = 4V 30 20 VGS = 3V 10 TJ = -55oC DURATION = 80µs TC = 25oC PULSE DUTY CYCLE = 0.5% MAX 0 0 1 2 3 4 VGS , GATE TO SOURCE VOLTAGE (V) 0 5 Figure 5. Transfer Characteristics 0.5 1.0 1.5 VDS , DRAIN TO SOURCE VOLTAGE (V) 2.0 Figure 6. Saturation Characteristics 2.0 40 NORMALIZED DRAIN TO SOURCE ON RESISTANCE PULSE DURATION = 80µs DUTY CYCLE = 0.5% MAX rDS(ON), DRAIN TO SOURCE ON RESISTANCE (mΩ) VGS = 5V ID = 20A ID = 10A 30 20 PULSE DURATION = 80µs DUTY CYCLE = 0.5% MAX 1.5 1.0 VGS = 10V, ID =20A 10 0.5 2 4 6 8 10 -80 -40 VGS, GATE TO SOURCE VOLTAGE (V) Figure 7. Drain To Source On Resistance vs Gate Voltage And Drain Current 1.2 ID = 250µA NORMALIZED DRAIN TO SOURCE BREAKDOWN VOLTAGE NORMALIZED GATE THRESHOLD VOLTAGE VGS = VDS, ID = 250µA 0.8 0.6 0.4 160 Figure 8. Normalized Drain To Source On Resistance vs Junction Temperatrue 1.2 1.0 0 40 80 120 TJ, JUNCTION TEMPERATURE (oC) 1.1 1.0 0.9 -80 -40 0 40 80 120 160 TJ, JUNCTION TEMPERATURE (oC) Figure 9. Normalized Gate Threshold Voltage vs Junction Temperature ©2004 Fairchild Semiconductor Corporation -80 -40 0 40 80 120 160 TJ , JUNCTION TEMPERATURE (oC) Figure 10. Normalized Drain To Source Breakdown Voltage vs Junction Temperature FQD45N03L Rev. B1 FQD45N03L Typical Characteristic (Continued) TC = 25°C unless otherwise noted 2000 10 VGS , GATE TO SOURCE VOLTAGE (V) CISS = CGS + CGD C, CAPACITANCE (pF) 1000 COSS ≅ CDS + CGD CRSS = CGD 100 VGS = 0V, f = 1MHz 40 0.1 VDD = 15V 8 6 4 WAVEFORMS IN DESCENDING ORDER: ID = 20A ID = 10A 2 0 1 10 30 0 5 VDS , DRAIN TO SOURCE VOLTAGE (V) 10 15 20 Qg, GATE CHARGE (nC) Figure 11. Capacitance vs Drain To Source Voltage Figure 12. Gate Charge Waveforms For Constant Gate Current 150 100 VGS = 10V, VDD = 15V, ID = 8A VGS = 4.5V, VDD = 15V, ID = 8A td(OFF) 80 60 SWITCHING TIME (ns) SWITCHING TIME (ns) tr tf 40 td(OFF) td(ON) 20 100 tf 50 tr td(ON) 0 0 0 10 20 30 40 50 0 RGS, GATE TO SOURCE RESISTANCE (Ω) 10 20 30 40 50 RGS, GATE TO SOURCE RESISTANCE (Ω) Figure 13. Switching Time vs Gate Resistance Figure 14. Switching Time vs Gate Resistance Test Circuits and Waveforms VDS BVDSS tP VDS L IAS VDD VARY tP TO OBTAIN REQUIRED PEAK IAS + RG VDD - VGS DUT tP 0V IAS 0 0.01Ω tAV Figure 15. Unclamped Energy Test Circuit ©2004 Fairchild Semiconductor Corporation Figure 16. Unclamped Energy Waveforms FQD45N03L Rev. B1 FQD45N03L Test Circuits and Waveforms (Continued) VDS VDD Qg(TOT) RL VDS VGS = 10V VGS Qg(5) + VDD VGS = 5V VGS - VGS = 1V DUT 0 Ig(REF) Qg(TH) Qgs Qgd Ig(REF) 0 Figure 17. Gate Charge Test Circuit Figure 18. Gate Charge Waveforms VDS tON tOFF td(ON) td(OFF) tf tr RL VDS 90% 90% + VGS VDD - 10% 10% 0 DUT 90% RGS VGS 50% 50% PULSE WIDTH VGS 0 Figure 19. Switching Time Test Circuit ©2004 Fairchild Semiconductor Corporation 10% Figure 20. Switching Time Waveform FQD45N03L Rev. B1 FQD45N03L Thermal Resistance vs. Mounting Pad Area ( T JM – T A ) P DM = ----------------------------Z θJA 125 RθJA = 33.32 + 23.84/(0.268+Area) 100 RθJA (oC/W) The maximum rated junction temperature, TJM, and the thermal resistance of the heat dissipating path determines the maximum allowable device power dissipation, PDM, in an application. Therefore the application’s ambient temperature, TA (oC), and thermal resistance RθJA (oC/W) must be reviewed to ensure that TJM is never exceeded. Equation 1 mathematically represents the relationship and serves as the basis for establishing the rating of the part. 75 (EQ. 1) 50 In using surface mount devices such as the TO-252 package, the environment in which it is applied will have a significant influence on the part’s current and maximum power dissipation ratings. Precise determination of PDM is complex and influenced by many factors: 1. Mounting pad area onto which the device is attached and whether there is copper on one side or both sides of the board. 25 0.01 0.1 1 10 AREA, TOP COPPER AREA (in2) Figure 21. Thermal Resistance vs Mounting Pad Area 2. The number of copper layers and the thickness of the board. 3. The use of external heat sinks. 4. The use of thermal vias. 5. Air flow and board orientation. 6. For non steady state applications, the pulse width, the duty cycle and the transient thermal response of the part, the board and the environment they are in. Fairchild provides thermal information to assist the designer’s preliminary application evaluation. Figure 21 defines the RθJA for the device as a function of the top copper (component side) area. This is for a horizontally positioned FR-4 board with 1oz copper after 1000 seconds of steady state power with no air flow. This graph provides the necessary information for calculation of the steady state junction temperature or power dissipation. Pulse applications can be evaluated using the Fairchild device Spice thermal model or manually utilizing the normalized maximum transient thermal impedance curve. Displayed on the curve are RθJA values listed in the Electrical Specifications table. The points were chosen to depict the compromise between the copper board area, the thermal resistance and ultimately the power dissipation, PDM. Thermal resistances corresponding to other copper areas can be obtained from Figure 21 or by calculation using Equation 2. RθJA is defined as the natural log of the area times a coefficient added to a constant. The area, in square inches is the top copper area including the gate and source pads. 23.84 ( 0.268 + Area ) R θ JA = 33.32 + ------------------------------------- ©2004 Fairchild Semiconductor Corporation (EQ. 2) FQD45N03L Rev. B1 rev October 2002 LDRAIN DPLCAP 10 DBODY 7 5 DBODYMOD DBREAK 5 11 DBREAKMOD DPLCAP 10 5 DPLCAPMOD RSLC2 5 51 - LGATE EVTEMP RGATE + 18 22 9 20 RBREAK 17 18 RBREAKMOD 1 RDRAIN 50 16 RDRAINMOD 2e-3 RGATE 9 20 2.65 RLDRAIN 2 5 10 RLGATE 1 9 44.1 RLSOURCE 3 7 39.9 RSLC1 5 51 RSLCMOD 1e-6 RSLC2 5 50 1e3 RSOURCE 8 7 RSOURCEMOD 1e-2 RVTHRES 22 8 RVTHRESMOD 1 RVTEMP 18 19 RVTEMPMOD 1 ESLC 11 50 21 EBREAK 16 + 17 18 - DBODY MWEAK 6 MMED MSTRO RLGATE LSOURCE CIN 8 SOURCE 3 7 RSOURCE MMED 16 6 8 8 MMEDMOD MSTRO 16 6 8 8 MSTROMOD MWEAK 16 21 8 8 MWEAKMOD S1A S1B S2A S2B EVTHRES + 19 8 + GATE 1 DBREAK RDRAIN 6 8 ESG LDRAIN 2 5 1e-9 LGATE 1 9 4.41e-9 LSOURCE 3 7 3.99e-9 RLDRAIN RSLC1 51 EBREAK 11 7 17 18 31.4 EDS 14 8 5 8 1 EGS 13 8 6 8 1 ESG 6 10 6 8 1 EVTHRES 6 21 19 8 1 EVTEMP 20 6 18 22 1 IT 8 17 1 DRAIN 2 5 + .SUBCKT FQD45N03L 2 1 3 ; CA 12 8 8e-10 CB 15 14 9e-10 CIN 6 8 8.9e-10 RLSOURCE S1A 12 S2A 13 8 14 13 S1B CA RBREAK 15 17 18 RVTEMP S2B 13 CB 6 8 EGS 19 VBAT 5 8 EDS - IT 14 + + - + 8 22 RVTHRES 6 12 13 8 S1AMOD 13 12 13 8 S1BMOD 6 15 14 13 S2AMOD 13 15 14 13 S2BMOD VBAT 22 19 DC 1 ESLC 51 50 VALUE={(V(5,51)/ABS(V(5,51)))*(PWR(V(5,51)/(1e-6*75),5))} .MODEL DBODYMOD D (IS = 1.28e-11 RS = 8.48e-3 TRS1 = 1.6e-3 TRS2 = 3e-6 XTI=2 CJO = 5.7e-10 TT = 9.5e-9 M = 0.57) .MODEL DBREAKMOD D (RS = 0.22 TRS1 = 8e-4 TRS2 = -8.9e-6) .MODEL DPLCAPMOD D (CJO = 3.7e-10 IS = 1e-30 N = 10 M = 0.48) .MODEL MMEDMOD NMOS (VTO = 1.99 KP = 8 IS=1e-30 N = 10 TOX = 1 L = 1u W = 1u RG = 2.65) .MODEL MSTROMOD NMOS (VTO = 2.4 KP = 32 IS = 1e-30 N = 10 TOX = 1 L = 1u W = 1u) .MODEL MWEAKMOD NMOS (VTO = 1.62 KP = 0.05 IS = 1e-30 N = 10 TOX = 1 L = 1u W = 1u RG = 26.5 RS = 0.1) .MODEL RBREAKMOD RES (TC1 = 9e-4 TC2 = 0) .MODEL RDRAINMOD RES (TC1 = 2e-2 TC2 = 4e-5) .MODEL RSLCMOD RES (TC1 = 1e-3 TC2 = 1e-7) .MODEL RSOURCEMOD RES (TC1 = 1e-3 TC2 = 1e-6) .MODEL RVTHRESMOD RES (TC1 = -1.6e-3 TC2 = -8e-6) .MODEL RVTEMPMOD RES (TC1 = -2.6e-3 TC2 = 1e-6) .MODEL S1AMOD VSWITCH (RON = 1e-5 .MODEL S1BMOD VSWITCH (RON = 1e-5 .MODEL S2AMOD VSWITCH (RON = 1e-5 .MODEL S2BMOD VSWITCH (RON = 1e-5 ROFF = 0.1 ROFF = 0.1 ROFF = 0.1 ROFF = 0.1 VON = -3.0 VOFF= -2.0) VON = -2.0 VOFF= -3.0) VON = -0.5 VOFF= 0.2) VON = 0.2 VOFF= -0.5) .ENDS Note: For further discussion of the PSPICE model, consult A New PSPICE Sub-Circuit for the Power MOSFET Featuring Global Temperature Options; IEEE Power Electronics Specialist Conference Records, 1991, written by William J. Hepp and C. Frank Wheatley. ©2004 Fairchild Semiconductor Corporation FQD45N03L Rev. B1 FQD45N03L PSPICE Electrical Model FQD45N03L SABER Electrical Model REV October 2002 template FQD45N03L n2,n1,n3 electrical n2,n1,n3 { var i iscl dp..model dbodymod = (isl = 1.28e-11, rs = 8.48e-3, trs1 = 1.6e-3, trs2 = 3e-6, xti=2, cjo = 5.7e-10, tt = 9.5e-9, m = 0.57) dp..model dbreakmod = (rs = 0.22, trs1 = 8e-4, trs2 = -8.9e-6) dp..model dplcapmod = (cjo = 3.7e-10, isl=10e-30, nl=10, m=0.48) m..model mmedmod = (type=_n, vto = 1.99, kp=8, is=1e-30, tox=1) m..model mstrongmod = (type=_n, vto = 2.4, kp = 32, is = 1e-30, tox = 1) m..model mweakmod = (type=_n, vto = 1.62, kp = 0.05, is = 1e-30, tox = 1, rs=0.1) sw_vcsp..model s1amod = (ron = 1e-5, roff = 0.1, von = -3.0, voff = -2.0) sw_vcsp..model s1bmod = (ron =1e-5, roff = 0.1, von = -2.0, voff = -3.0) sw_vcsp..model s2amod = (ron = 1e-5, roff = 0.1, von = -0.5, voff = 0.2) LDRAIN sw_vcsp..model s2bmod = (ron = 1e-5, roff = 0.1, von = 0.2, voff = -0.5) DPLCAP 5 10 c.ca n12 n8 = 8e-10 c.cb n15 n14 = 9e-10 c.cin n6 n8 = 8.9e-9 RLDRAIN RSLC1 51 RSLC2 ISCL dp.dbody n7 n5 = model=dbodymod dp.dbreak n5 n11 = model=dbreakmod dp.dplcap n10 n5 = model=dplcapmod RDRAIN 6 8 ESG GATE 1 EVTEMP RGATE + 18 22 9 20 6 CIN 8 LSOURCE 7 RSOURCE S1A 12 13 8 S2A 14 13 S1B CA EBREAK + 17 18 - MMED m.mmed n16 n6 n8 n8 = model=mmedmod, l=1u, w=1u m.mstrong n16 n6 n8 n8 = model=mstrongmod, l=1u, w=1u m.mweak n16 n21 n8 n8 = model=mweakmod, l=1u, w=1u DBODY MWEAK MSTRO RLGATE res.rbreak n17 n18 = 1, tc1 = 9e-4, tc2 = 0 res.rdrain n50 n16 = 2e-3, tc1 = 2e-2, tc2 = 4e-5 res.rgate n9 n20 = 2.65 res.rldrain n2 n5 = 10 res.rlgate n1 n9 = 44.1 res.rlsource n3 n7 = 39.9 res.rslc1 n5 n51= 1e-6, tc1 = 1e-3, tc2 = 1e-7 res.rslc2 n5 n50 = 1e3 res.rsource n8 n7 = 1e-2, tc1 = 1e-3, tc2 =1e-6 res.rvtemp n18 n19 = 1, tc1 = -2.6e-3, tc2 = 1e-6 res.rvthres n22 n8 = 1, tc1 = -1.6e-3, tc2 = -8e-6 11 EVTHRES 16 21 + 19 8 + LGATE DBREAK 50 - i.it n8 n17 = 1 l.ldrain n2 n5 = 1e-9 l.lgate n1 n9 = 4.41e-9 l.lsource n3 n7 = 3.99e-9 DRAIN 2 RLSOURCE RBREAK 15 17 18 RVTEMP S2B 13 CB + + 6 8 EGS SOURCE 3 VBAT 5 8 EDS - 19 IT 14 - + 8 22 RVTHRES spe.ebreak n11 n7 n17 n18 = 31.4 spe.eds n14 n8 n5 n8 = 1 spe.egs n13 n8 n6 n8 = 1 spe.esg n6 n10 n6 n8 = 1 spe.evtemp n20 n6 n18 n22 = 1 spe.evthres n6 n21 n19 n8 = 1 sw_vcsp.s1a n6 n12 n13 n8 = model=s1amod sw_vcsp.s1b n13 n12 n13 n8 = model=s1bmod sw_vcsp.s2a n6 n15 n14 n13 = model=s2amod sw_vcsp.s2b n13 n15 n14 n13 = model=s2bmod v.vbat n22 n19 = dc=1 equations { i (n51->n50) +=iscl iscl: v(n51,n50) = ((v(n5,n51)/(1e-9+abs(v(n5,n51))))*((abs(v(n5,n51)*1e6/75))** 5)) } } ©2004 Fairchild Semiconductor Corporation FQD45N03L Rev. B1 th FQD45N03L SPICE Thermal Model JUNCTION REV October 2002 FQD45N03L_Thermal CTHERM1 th 6 1.3e-3 CTHERM2 6 5 1.5e-3 CTHERM3 5 4 1.6e-3 CTHERM4 4 3 1.7e-3 CTHERM5 3 2 5.8e-3 CTHERM6 2 tl 2e-2 RTHERM1 CTHERM1 6 RTHERM1 th 6 3.5e-3 RTHERM2 6 5 4.5e-3 RTHERM3 5 4 6.2e-2 RTHERM4 4 3 6.8e-1 RTHERM5 3 2 8.1e-1 RTHERM6 2 tl 8.3e-1 RTHERM2 CTHERM2 5 SABER Thermal Model SABER thermal model FQD45N03L_Thermal template thermal_model th tl thermal_c th, tl { ctherm.ctherm1 th 6 = 1.3e-3 ctherm.ctherm2 6 5 = 1.5e-3 ctherm.ctherm3 5 4 = 1.6e-3 ctherm.ctherm4 4 3 = 1.7e-3 ctherm.ctherm5 3 2 = 5.8e-3 ctherm.ctherm6 2 tl = 2e-2 rtherm.rtherm1 th 6 = 3.5e-3 rtherm.rtherm2 6 5 = 4.5e-3 rtherm.rtherm3 5 4 = 6.2e-2 rtherm.rtherm4 4 3 = 6.8e-1 rtherm.rtherm5 3 2 = 8.1e-1 rtherm.rtherm6 2 tl = 8.3e-1 } RTHERM3 CTHERM3 4 RTHERM4 CTHERM4 3 RTHERM5 CTHERM5 2 CTHERM6 RTHERM6 tl ©2004 Fairchild Semiconductor Corporation CASE FQD45N03L Rev. 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PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. I9