www.fairchildsemi.com KA2811C 12V Spindle Motor and Voice Coil Motor Driver Features Description SMP Circuit The KA2811C is a monolithic one-chip IC which includes SPM (Spindle motor) driver, VCM (Voice coil motor) driver and peripheral driver, designed for driving HDD motor. For high starting torque and high speed, SPM circuit employes WSS (Waltz step start) method for starting the motor and can drive up to 2A. VCM circuit is designed to drive up to 1.5A to meet the trends of HDD'S high speed. (Requires external transistors). • 3 phase sensorless BLDC motor driver with speed discriminator • Built-in start-up circuit with WSS (Waltz step start) method • Suitable for high and middle end set (Max. output current: 2A) • Built-in dynamic brake circuit Vcm Circuit 48-QFPH-1414 • High output current driver with external NPN & PNP transistors. (Max. output current: 2A) • No crossover distortion • Low offset current Other • Low standby current • Built-in precision power detector circuit • Built-in TSD(Thermal Shut Down) circuit Typical Applications Ordering Information • Hard disk drive(HDD) Device Package KA2811C 48-QFPH-1414 Operating Temperature 0 ~ 70°C Rev.1.0.1 May. 2000. ©2000 Fairchild Semiconductor International 1 KA2811C Pin Assignments 43 SINKAREF SINKA2 44 DISABLE SOURCEA 45 VCC SINKA1 46 SINKB1 CLOCK 47 SOURCEB CSTMON 48 TAB SINKB2 CRST 48QFPH (48Quad Flat Package Heat-sink) 42 41 40 39 38 37 BRAKE 1 36 COMP2 CPUMP 2 35 COMP1 VCC3 3 34 CTLN COSC 4 33 CTLP PC 5 32 RESENSE GND 6 31 GAINSEL KA2811C TAB TAB 29 GND CE 9 28 CRET CLREF 10 27 PFAIL RSET 11 26 READY N 12 25 RETRACT 18 CS 17 W 16 EFLT 15 UFLT 14 VFLT WFLT 13 TAB 2 19 20 21 22 23 24 RPMSEL 8 SENSE5 MTRON SENSE12 VCC1 RETSET 30 U 7 V VCC1 KA2811C Pin Definitions Pin Number Pin Name I/O Pine Function Descrition 1 BRAKE O Brake output 2 CPUMP - Charge pump capacitor 3 VCC3(VDD) - 5V power supply 4 COSC - Start-up OSC capacitor 5 PC - Phase compensation capacitor 6 GND - Ground 7 VCC1 - 12V power supply 8 MTRON I Motor on & off control input 9 CE I Chip enable (Active low) 10 CLREF I Current limit reference voltage 11 RSET I Current & voltage setting resistor 12 N I Neutral 13 WFLT I Input filter of W-phase signal 14 VFLT I Input filter of V-phase signal 15 UFLT I Input filter of U-phase signal 16 EFLT I Back EMF output filter 17 W O W-phase output 18 CS I Current sensing resistor 19 V O V-phase output 20 U O U-phase output 21 RETSET I Retract voltage setting resistor 22 SENSE12 I VCC(12V) power supply sense 23 SEMSE5 I VCC(5V) power supply sense 24 RPMSEL I RPM selection 25 RETRACT I Retract circuit control input 26 READY O Targer RPM locking output signal 27 PFAIL O Power fail output 28 CRET I Retract power charging capacitor 29 GND - Ground 30 VCC1 - 12V power supply 31 GAINSEL I VCM gain setting (High, Low) 32 RSENSE I Current sensing resistor 3 KA2811C Pin Definitions (Continued) Pin Number Pin Name I/O Pine Function Descrition 33 CTLP I VCM amp positive input 34 CTLN I VCM amp negative input 35 COMP1 I Compensation capacitor 36 COMP2 I Compensation capacitor 37 SINKAREF I Kelvin sensing point for VCM amp 38 DISABLE I VCM part disable 39 VCC2 - VCM part power supply (12V) 40 SINKB1 I External NPN-PNP transistor collector 41 SOURCEB O External PNP transistor base 42 SINKB2 O External NPN transistor base 43 SINKA2 O External NPN transistor base 44 SOURCEA O External PNP transistor base 45 SINKA1 I External NPN-PNP transistor base 46 CLOCK I Reference clock input 47 CSTMON - Start-up monitoring 48 CRST - VCM amp gain adjustable resistor 4 KA2811C VCC COMP2 COMP1 Internal Block Diagram 39 36 35 CTLP 33 44 SOURCEA 45 SINK1 43 SINK2 CTLN 34 48 CRST GAINSEL 31 GAINSEL 37 SINKAREF 32 RESENSE 41 SOURCEB 40 SINKB1 42 SINKB2 DISABLE DISABLE 38 28 CRET RETRACT RETRACT 25 RETSET 21 15 UFLT STMON CSTMON 47 PFAIL 27 BackEMI Detector 14 VFLT 13 WFLT 12 N 16 EFLT 12V 12V-SENSE 22 + 5V-SENSE 23 + − 30 VCC WSS Start-up Circuit Bandgap +5V Commutation & Control 20 U 3-phase H-bridge Drivers 19 V VCC3 3 17 W Logic 4 COSC BRAKE 1 8 MTRON BRAKE 5 PC CE 9 Power Control Bias − Z-cross Detector LVI TSD Control-amp Speed Detector − READY Divider1 VREF + Sense-amp Speed Control 5 TAB 6 2 CPUMP READY 29 GND 26 GND 11 GND 24 RSET F/V C. RPMSEL RPMSEL − + Buffer-amp CLOCK 46 18 CS + 10 CLREF KA2811C Equivalent Circuits Brake output U, V, W drive output VCC 120kΩ (1 Pin) 40kΩ 50kΩ 50kΩ U (20Pin) From MTRON Block 50kΩ V (19Pin) 50kΩ W(17Pin) 50kΩ R9 Cpump Cosc 0.5V ON/OFF (2Pin) (4Pin) − + − + To output Drive circuit − + ON/OFF 3V Pc Mtron Vref Output Drive circuit − (8Pin) + Output Current sensing IIL Injection (5Pin) 6 1.4V KA2811C Equivalent Circuits (Continued) CE input Clref VCC3(5V) VCC3(5V) VCC3(5V) 1.4V (10Pin) (9Pin) Rset N Vref(5V reference) + − U comparator + (11Pin) − (12Pin) V comparator + − Uflt, Vflt, Wflt Retset (15Pin: UFLT) (14Pin: VFLT) (13Pin: WFLT) − + 3.75k Each Output drive Circuit (21Pin) Each U, V, W phase signal 7 W comparator KA2811C Equivalent Circuits (Continued) Rpmsel Retract VCC(5V) VCC3(5V) VCC(5V) 32k (24Pin) (25Pin) Ready Cret VCC3(5V) 4.2V U (26Pin) (28Pin) V W Retract Block Gainsel Cstmon VCC3(5V) (47Pin) RUNNING: High START-UP: Low (31Pin) 8 KA2811C Absolute Maximum Ratings (Ta = 25°C) Parameter Maximum supply voltage Maximum logic part supply voltage 2 Symbol Value Unit VCC1MAX, VCC1MAX 15.0 V VCC3MAX (VDD) 7.0 V PD 3.0 W IOMAX 2.0 A VIN −3.0 ~ VCC3 V Operating temperature range TOPR 0 ~ 70 °C Soldering temperature (5 seconds, 1/4 inch from pin) TSOLD 300 °C TSTG −55 ~ 150 °C Power dissipation Maximum output drive current Logic control input voltage Storage temperature range Notes: 1. Absolute maximum ratings are values beyond which the device may be damaged permanently. Normal operation is not guaranteed at or above those extremes. 2. All voltages are measured with respect to the GND voltage level unless otherwise specified. 3. When mounted on 50mm × 50mm × 1mm PCB (Phenolic resin material). 4. Do not exceed Pd and SOA(Safe Operation Area). Power Dissipation Curve Pd[mW] 3,000 2,000 1,000 0 0 25 50 75 100 125 150 175 Ambient temperature, Ta [°C] Recommended Operating Conditions (Ta = 25°C) Parameter Symbol Min. Typ. Max. Unit VCC1, VCC2 10.8 12.0 13.2 V Operating supply voltage in logic part VCC3 4.5 5.0 5.5 V Ambient operating temperature range Ta 0 - +70 °C Operating supply voltage 9 KA2811C Electrical Characteristics (Ta=25°C, VCC1, VCC2=12V, VCC3=5V) Parameter Quiescent current Symbol Conditions Min. Typ. Max. Unit ICC2 CE=0V, DISABLE=0V 9 14 19 mA ICC3 CE=5V, DISABLE=5V 2 4.5 7 mA 0.8 - 2.0 V SPM DRIVE CE input threshold voltage - VCETH CE input high current ICEIH CE=5V - - ±100 µA CE input low current ICEIL CE=0V - - ±100 µA 0.8 - 2.0 V MTRON input threshold voltage - VMOTH MTRON input high current IMIH MTRON=5V - - ±100 µA MTRON input low current IMIL MTRON=0V - - ±100 µA Start-up oscillation high threshold voltage VSTTHH CEXT=0.068µF 2.6 3.0 3.4 V Start-up oscillation low threshold voltage VSTTHL CEXT=0.068µF 0.3 0.5 0.7 V FST CEXT=0.068µF 100 145 190 Hz Start-up oscillation frequency Start-up oscillation high frequency charging current IHIFCHA CSTMON=0V −68 −52 −36 mA Start-up oscillation high frequency discharging current IHIFDCH CSTMON=0V 32 48 64 µA Start-up oscillation low frequency charging current ILOFCHA CSTMON=5V - −1.5 −8 µA Start-up oscillation low frequency discharging current ILOFDCH CSTMON=5V 36 48 64 µA - 1 0.4 V Start-up monitor low voltage Start-up monitor switching voltage VSML IO=1mA - 2.0 2.5 3.0 V 0.85 1.0 1.15 V - 20 50 80 µA ICPCHA - −65 −50 −35 µA ICPLKG - - - ±1 µA VSTART Charge pump R1 setup voltage VCP Charge pump discharge current ICPDCH Charge pump charging current Charge pump leakage current R1=10kΩ Ready output high voltage VR1 IO=−1.0mA, UFLT=300Hz 3.6 4.2 4.8 V Ready output high voltage VR2 IO=−1.0mA, UFLT=360Hz 3.6 4.2 4.8 V Ready output low voltage VREADY - - - 0.4 V 10 KA2811C Electrical Characteristics (Continued) (Ta=25°C, VCC1, VCC2=12V, VCC3=5V) Parameter Output leakage current 1 Output saturation voltage Symbol Conditions Min. Typ. Max. Unit ILKG VCC=12.0V (Up U) - - ±200 µA ILEA2 VCC=12.0V (Up V) - - ±200 µA ILEA3 VCC=12.0V (Up W) - - ±200 µA ILEA11 VCC=12.0V (Low U) - - ±200 µA ILEA12 VCC=12.0V (Low V) - - ±200 µA ILEA13 VCC=12.0V (Low W) - - ±200 µA IO=100mA - - 0.8 V IO=300mA - - 1.2 V IO=500mA - - 1.5 V IO=1A - - 2.0 V IO=1.5mA - - 3.0 V VSAT (U, V, W) RPMSEL input low current IRPML RPMSEL=0V −80 −45 −10 µA RPMSEL input high current IRPMH RPMSEL=5V 10 40 70 µA Brake output low voltage VBRK IO=0.5mA - - 0.4 V Low voltage inhibit VLVI - 6 - 8 V IOFF RSENSE=1Ω −9 - 9 mA 1/4 gain G1/4 GAINSEL=2V 227 250 278 mA/V 1/16 gain G1/16 GAINSEL=0.8V 53 63 73 mA/V VCM DRIVE Offset current Sinking saturation 11 voltage VNSAT11 IO=100mA - 0.3 - V Sinking saturation 12 voltage VNSAT12 IO=300mA - 0.4 - V Sinking saturation 13 voltage VNSAT13 IO=500mA - 0.5 - V Sinking saturation 21 voltage VNSAT21 IO=100mA - 0.3 - V Sinking saturation 22 voltage VNSAT22 IO=300mA - 0.4 - V Sinking saturation 23 voltage VNSAT23 IO=500mA - 0.5 - V Sourcing saturation 11 voltage VPSAT11 IO=100mA - 0.3 - V Sourcing saturation 12 voltage VPSAT12 IO=300mA - 0.4 - V Sourcing saturation 13 voltage VPSAT13 IO=500mA - 0.5 - V Sourcing saturation 21 voltage VPSAT21 IO=100mA - 0.3 - V Sourcing saturation 22 voltage VPSAT22 IO=300mA - 0.4 - V Sourcing saturation 23 voltage VPSAT23 IO=500mA - 0.5 - V SOURCEA base drive current ISOAB - 20 - - mA SOURCEB base drive current ISOBB - 20 - - mA 11 KA2811C Electrical Characteristics (Continued) (Ta=25°C, VCC1, VCC2=12V, VCC3=5V Parameter Symbol Conditions Min. Typ. Max. Unit SINK2 base drive current ISIAB - 20 - - mA SINKB2 base dirve current ISIBB - 20 - - mA RETSET voltage VRETSET - 0.5 0.75 0.95 V SOURCE voltage VSRC CRET=3V 1.0 1.6 2.2 V ISIN SINKB1=0.5V 36 48 60 - VRETOUT ISINKB1=1mA - - 0.4 mA 12V threshold voltage VTH2 - 9.0 10 11 V 12V hysteresis voltage SINK current RETRACT output low voltage VHYS12 - - 150 - mV 5V threshold voltage VTH5 - 1.2 4.6 4.85 V 5V hysteresis voltage VHYS5 - - 75 - mV Power fail output low voltage VOPF - - - 0.4 V GAINSEL high input voltage VIHGAIN - 2.0 - - V DISABLE high input voltage VIHDIS - 2.0 - - V RETRACT high input voltage VIHRET - 2.0 - - V GAINSEL low input voltage VILGAIN - - - 0.8 V DISABLE low input voltage VILDIS - - - 0.8 V RETRACT low input voltage VILRET - - - 0.8 V DISABLE high input current IIHDIS VIN=5V - 10 40 µA GAINSEL high input current IIHGAIN VIN=5V - - ±10 µA RETRACT high input current IIHRET VIN=5V - - ±10 µA DISABLE low input current IILDIS VIN=0V - - ±10 µA GAINSEL low input current IILGAIN VIN=0V −40 −10 - µA RETRACT low input current IILRET VIN=0V −250 −160 - µA 12 KA2811C Application Information 1. SPINDLE MOTOR CIRCUIT 1. Bias The circuit biases the spindle block and is configured of a bandgap circuit as illustrated in figure 1 below. Vref r2 r3 r4 Iw Ib Ia rb ra rw Figure 1. Bias block internal circuit Where r3 = ra = rb ........... = rw. Pin no.9 (CE) is capable to enable or disable the spindle block. 2. Start-up This concerns initial drive of the spindle motor. The Waltz Step start (WSS) method has been applied to obtain high torque. The WSS starts the 3-phase spindle motor in 3 steps just like a waltzing rhythm not in 4 step as shown below. 4 Step (4/4 Beat) 3 Step (3/4 Beat) The start-up is effected by driving output stage of the block with the sliding COSC clock and setting the signals of CE and MTRON at the low state (See the start-up timing chart). When the spindle motor is in start-up mode, the voltage at pin 47 should measure 1.4V and in the running mode 2.5V. The equations below represent the timing of each mode. 13 KA2811C Transition time from start-up high frequency to low frequency: t – -- τ Vpin no. 47 ( ≅ 1.4V ) = 5V × 1 – e t = τ In (3.6/5) Delay time from the start-up start-up to running modes: t – -- τ Vpin no. 47 ( ≅ 2.5V ) = 5V × 1 – e t = – τ In 0.5 3. BEMF detector This circuit detects the signals to CE and MTRON to determine BEMF (Back Electromotive force) level required to maintain self-commutation of the spindle motor. The block is configured of BEMF amplifier and voltage detector circuits. 4. Zero cross detector This circuit controls the rotating speed of the spindle motor with the output obtained from the comparator which compares the U phase voltage(among U, V, W phase voltages that are the actual elements of BEMF of the motor) with the neutral voltage of the motor. 5. RPM selector The selection mode at the pin no. 24 and the clock at the Pin no. 48 enables to run the motor at specific RPM within the range of 3600/4500/5400 as follows Pin no. 24 (RPMSEL) Low (0V) High (5V) Open Pin no. 46 (CLOCK) Target RPM Remark 4MHz 3600 - 5MHz 4500 - 6MHz 5400 - 5MHz 5400 - - - Not use 6. Speed control circuit It compares input reference clock with the output phase of zero cross over detector which is proportional to motor speed by means of PLL (Phase lock loop) circuit. After that, it provides the data of speed error to the F/V block as pulse. 14 KA2811C 1-1. RPM of Motor fck × 60 × D1 N O = ----------------------------------------Ncnt × P O × D2 Here, NO = RPM fck = Reference clock (Pin no. 46), D1 = Divided clock ratio, D2 = Divided zero cross signal ratio, PO = Motor pair pole (8 pole motor: PO = 4) Ncnt = PLL counted value Pin 24 = 0V → Ncnt = 2084 Pin 24 = 5V → Ncnt = 1736 ex) fck = 5MHz , Pin no. 24 = 5V, Mode (Ncnt = 1736) fck N O = ------------- × 1.875 = 5400.346rpm ≅ 5400rpm Ncnt 1-2. Speed error (%) I HOLD RPMerror = --------------- × 100 Ncnt = I HOLD × ( R10 + R11 ) × 100 Here, IHOLD = Leakage current (Pin no. 2) ex) At the KA2811C RPMerror = 100µA × 10kΩ × 100 = 0.1% 7. F/V converter This circuit converts the digital output signals from the speed control block into DC voltage and then feeds the voltages to buffer amplifier. 8. Control amp It compensates the total gain and phase of SPM circuit. It operates sense amp during start-up, and incorporates output voltage and feedback loop by F/V input during running. 9. Sense amp It determines maximum output current during the start-up. 10. Ready It generates high Ready output when motor speed reaches target RPM. 11. Brake While the spindle motor is in rotation at the target RPM. the signal voltage at the pin 1 sets to the low state that the brake function is not activated. 15 KA2811C If however, the power is turned off or the chip is disabled, the internal circuit of the pin 1 will be opened. In this way, the voltage at the capacitor C4 will be discharged through the resistor R4 and triggers the dual MOSFET turned on. 1 KA2811C 12 17 18 20 V W Spindle coils 19 21 22 23 24 U D2 SD5 19 17 SD4 SD3 R4 20 C4 R8 R7 R6 SSD2003 Figure 2. Brake circuit 12. Protector UVLO (Under voltage lockout) The protector shuts down internal bias by the function of UVLO when the power supply voltage drops below 6V (min). TSD (Thermal shutdown) It shuts down the driver in case the chip temperature should rise upto 150°C by the function of thermal circuitry. 16 shutdown (TSD) KA2811C 2. VCM CIRCUIT 1. Current Amplifier Current amplifier is capable of gain adjustment with use of six external resistors. The design is implemented in a configuration that ensures minimum crossover distortion characteristics. It externally employs dual power transistors of NPN & PNP types of Imax = 3A current rating in order to minimize IC loss and maximize output driving capability. (Dual NPN: SSD1001, Dual PNP: SSD1002) 2. Retract circuit The power for this circuit is derived from the spindle motor BEMF after having filtered by 3 diodes (self-contained) and the capacitor C3 at the pin 28(CRET). Retract function is active when the “Low” level is applied to the input (Pin 25) which turns the pin 40 (SINKB1) to “Low” state and sets the bias voltage of pin no. 32 (RSENSE) as expressed below: 0.7 [ V ] Vpin32 [ V ] = ---------------------------------------------------- × 3 × 3.75 [ kΩ ] 3.75 [ kΩ ] + R5 [ kΩ ] VCM current during the retraction is determined by the resistor R5. 3. DISABLE Pin Enables or disables of VCM circuit. 4 GAINSEL This function selects the gain mode. When the input to pin 31 (GAINSEL) is at high state, it selects high gain mode, and if low, it becomes low gain mode. 2-1. Gain selection method + RFP-----------------------------High gain (Pin31 = 5V) = R2P R!P RFP Low gain (Pin32 = 0V) = -----------------------------R1P + R2P 17 KA2811C R2P RFP Extermal circuit From D/A. converter 1Ω 45 37 Intermal circuit R1P Vref To VCM(+) 33 + + − Vout 34 − High gain amp Low gain amp R1N 48 R1N 32 RFN R1P = R1N R2P = R2N RFP = RFN Figure 3. VCM gain amp circuit 5. Power Fail Detector It checks the power of 12V and 5V. The bandgap reference circuit is used to maintain internal reference voltage. Assume in Fig.4 that the bandgap reference voltage is 1.5V and the normal voltage level of VCC1 & 2 (12V) or VCC3 (5V) is decreased. If the voltage at any one pin 22, 23 drops down to 1.5V level, when the comparator output (PFAIL) turns to low from high which is normal running state. In this example, the voltages of VCC1 & 2 and VCC3 are obtained by the following expressions: R1 + R2 V CC 1 ,2 = Vpin no. 22 × ---------------------R2 [ ] + 2.25 [ kΩ ] 12.75 kΩ = 1.5 [ V ] × ----------------------------------------------------------2.25 [ kΩ ] = 9.999 [ V ] or less R3 + R4 V CC 3 = Vpin no. 23 × ---------------------R4 [ 3.075 kΩ ] + 1.5 [ kΩ ] = 1.5 [ V ] × -------------------------------------------------------1.5 [ kΩ ] = 4.757 [ V ] or less Hysteresis: VCC1, 2 = 90mV (Typ) VCC3 = 45mV (Typ) 18 KA2811C vcc1, 2 R1 vcc3 R3 12V-SENSE 22 + 5V-SENSE 23 + − R2 R4 Bandgap Reference Figure 4. Power fail circuit 19 27 PFAIL KA2811C timming chart Start-up CE f1 f2 MTRON VTH1 = 3V VTH2 = 0.5V COSC U Running mode V W 20 KA2811C From Start-up Mode To Running Mode Waveform Pin20 (U Phase) Pin4(OSC.) Pin47 (CSTMON) 21 KA2811C Synchronous Driving Waveform (Start-up Mode) Pin20(U Phase) Pin4(OSC.) 22 KA2811C Running Mode Waveform U Phase V Phase W Phase 23 KA2811C Typical Performance Characteristics VSAT VS. IO 1000 900 800 Output Saturation 700 Voltage [ mV] 600 NPN+PNP NPN 500 400 PNP 300 200 100 0 0 100 200 300 400 500 600 700 800 Output(Coil) Current [mA] VCM Output Saturation Voltage vs. VCM Output Current ( NPN TRs = SSD1001, PNP TRs =SSD1002 ) 24 900 1000 1100 1200 KA2811C Test Circuits Rsense 1 QA1 SW7 20 SW6 33 SW5 100 SW4 15 QB1 VCC V6 VCC VA V8 SW1 VB QA2 RC 1.8 R47 20k V5 V1 QB2 V4 V2 SW8 RA 1.8 RB 1.8 V1 RD 1.8 V3 48 RFN 1k 37 1 R2 500k VCC3 RFP 1k SW9 36 R2N 2k R1N 6k CTLN R2P 2k TIMER Vdd(5V) C4 0.068µF R1P CTLP 6k C5 0.01µF KA2811C VCC2 VCC1 SWmo SWce R27 50k R11 6k 25 12 13 R10 4k 24 SWcs R9a 1 C23 0.01µ SW3 R9b 1 W1 W2 W3 SV1 SV2 40 24 120 SV3 SU1 C22 0.01µ SU2 SU3 R9c 1 R9d 1 120 25 40 24 120 40 24 KA2811C CLOCK Typical Application Circuits R2 VCM SD1 SD2 SSD1001 SSD1002 1 1 R13 VCC2(12V) R14 C1 DISABLE R1 37 48 1 RFN RFP 36 C2 VCC3(5V) R2N R2P C17 C15 C16 R12 R1N CTLN R1P CTLP GAINSEL C14 KA2811C VCC2(12V) VCC1(12V) MTRON D1 CE PFAIL READY R11 12 13 R10 RETRACT 25 24 RPMSEL C13 C12 C11 C10 R9 R5 W V U D2 C6 Spindle coils SD5 17 19 SD4 C5 SD3 ZD1 R4 20 C4 R8 R7 R6 SSD2003 1 C9 C8 C7 Notes: Break down voltage of ZD1 < maximum supply voltage (15V). 26 C3 48-QFPH-1414 17.20 ±0.30 (4.85) 14.00 ±0.20 17.20 ±0.30 14.00 ±0.20 #48 #1 0.30 (0.825) -0.05 0.10MAX ° 0~8 0.20 +0.10 -0.05 2.60 ±0.10 3.00MAX 0.65 +0.10 0.00~0.25 0.10MAX 0.80 ±0.20 TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACEx™ Bottomless™ CoolFET™ CROSSVOLT™ DOME™ E2CMOSTM EnSignaTM FACT™ FACT Quiet Series™ FAST® FASTr™ GlobalOptoisolator™ GTO™ HiSeC™ ISOPLANAR™ MICROWIRE™ OPTOLOGIC™ OPTOPLANAR™ POP™ PowerTrench® QFET™ QS™ QT Optoelectronics™ Quiet Series™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TinyLogic™ UHC™ VCX™ DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD 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. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. 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. F1