LTC1646 LINER
Document overview
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Technical content
■ CompactPCI Bus Removable Boards ■ Allows Safe Board Insertion and Removal from a Live, CompactPCI TM Bus ■ Controls 3.3V and/or 5V Supplies ■ Programmable Foldback Current Limit During Power-Up ■ Dual Level Circuit Breakers Protect Supplies from Overcurrent and Short-Circuit Faults ■ LOCAL_PCI_RST# Logic On-Chip ■ PRECHARGE Output Biases I/O Pins During Card Insertion and Extraction ■ User Programmable Supply Voltage Power-Up Rate ■ 15V High Side Drive for External N-Channel MOSFETS ■ PWRGD, RESETOUT and FAULT Outputs CompactPCI Dual Hot Swap Controller The LTC 1646 is a Hot Swap TM controller that allows a board to be safely inserted and removed from a live CompactPCI bus slot. Two external N-Channel transistors control the 3.3V and 5V supplies. The supplies can be ramped-up in current limit or a programmable rate. Elec- tronic circuit breakers protect both supplies against overcurrent fault conditions. The PWRGD output indicates when all of the supply voltages are within tolerance. The OFF/ON pin is used to cycle the board power or reset the circuit breaker. The PRECHARGE output can be used to bias the bus I/O pins during card insertion and extraction. PCI_RST# is logically combined on-chip with HEALTHY# in order to generate LOCAL_PCI_RST# which can be used to reset the CPCI card logic if either of the supply voltages is not within tolerance. The LTC1646 is available in the 16-pin narrow SSOP package. Figure 1 MMBT2222A 4.7nF 18Ω 18Ω 12Ω 10Ω 2.7Ω 1.8Ω 10Ω 10Ω 0.005Ω, 1% 0.007Ω 1k, 5% 10k 10k 1.2k 3VIN PRECHARGE OUT 1V ±10% IOUT = ± 55mA 3VIN 3VIN 3VSENSE 5VSENSE 3VOUT 3VOUT 5VOUT 3.3V 5VIN 5VIN RESET# I/O PCI BRIDGE (21154)DATA BUSDATA BUS V(I/O) V(I/O) 0.1µF 0.1 µF 0.1µF 0.01µF IRF7413 IRF7413 LOCAL_PCI_RST# 3.3V 7.6A GATE GND PRECHARGE DRIVE RESETOUT TIMEROFF/ON FAULT PWRGD RESETIN LTC1646 891 0 7 1 21 1 5 61 3 1 4 BD_SEL# HEALTHY# PCI_RST#
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(MALE) COMPACT PCI CIRCUIT CARD CONNECTOR (FEMALE) LONG 5V 3.3V LONG 3.3V GROUND I/O PIN 1 Z1, Z2: BZX84C6V2 Z2Z1 APPLICATIO SU
FEATURES
, LTC and LT are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IDD V5VIN Supply Current OFF/ON = 0V ● 1.5 4 mA VLKO Undervoltage Lockout 5V IN ● 2.3 2.50 2.7 V 3VIN ● 2.3 2.55 2.7 V VFB Foldback Current Limit Voltage V FB = (V5VIN –V 5VSENSE), V5VOUT = 0V, TIMER = 0V ● 15 20 30 mV VFB = (V5VIN – V5VSENSE), V5VOUT = 4V, TIMER = 0V ● 50 55 65 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 0V, TIMER = 0V ● 15 20 30 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 2V, TIMER = 0V ● 50 55 65 mV VCB Circuit Breaker Trip Voltage V CB = (V5VIN – V5VSENSE), V5VOUT = 5V, TIMER Open ● 50 56 65 mV VCB = (V3VIN – V3VSENSE), V3VOUT = 3.3V, TIMER Open ● 50 56 65 mV tOC Overcurrent Fault Response Time (V 5VIN – V5VSENSE) = 100mV, TIMER Open ● 10 21 30 µs (V3VIN – V3VSENSE) = 100mV, TIMER Open ● 10 21 30 µs tSS Short-Circuit Fault Response Time (V 5VIN – V5VSENSE) = 200mV, TIMER Open ● 0.145 1 µs (V3VIN – V3VSENSE) = 200mV, TIMER Open ● 0.145 1 µs ICP GATE Pin Output Current OFF/ON = 0V, V GATE = 0V, TIMER = 0V ● –18 –13 –8 µA OFF/ON = 5V, VGATE = 5V, TIMER = 0V 80 200 300 µA OFF/ON = 0V, VGATE = 5V, FAULT = 0V, TIMER Open ● 47 1 2m A VGATE External Gate Voltage OFF/ON = 0V, I GATE = –1µA ● 12 15 16 V (GATE to GND) OFF/ON = 0V, V 5VIN = 3.3V, IGATE = –1µA ● 11 13 15 V VTH Power Good Threshold Voltage 3V OUT ● 2.8 2.9 3.0 V 5VOUT ● 4.5 4.65 4.75 V V3VONLY No 5V Input Mode Window Voltage V 3VONLY = ⎪V5VIN – V3VIN⎪, V5VOUT = V3VOUT = 3.3V ● 50 120 200 mV VIL Input Low Voltage OFF/ON, RESETIN, FAULT ● 0.8 V ORDER PART NUMBER TJMAX = 125°C, θJA = 135°C/W Consult LTC Marketing for parts specified with wider operating temperature ranges. LTC1646CGN LTC1646IGN ABSOLUTE AXI U RATI GSW WW U PACKAGE/ORDER I FOR ATIOUU W (Note 1) ELECTRICAL CHARACTERISTICSThe ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V5VIN = 5V and V3VIN = 3.3V unless otherwise noted. Analog Voltages and Currents: IN + 0.3V) Operating Temperature Range: TOP VIEW GN PACKAGE 16-LEAD PLASTIC SSOP RESETOUT TIMER FAULT PWRGD 5VOUT GND 3VOUT 3VIN RESETIN OFF/ON DRIVE PRECHARGE IN 5VSENSE GATE SENSE GN PART MARKING 1646 1646I Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIH Input High Voltage OFF/ON, RESETIN, FAULT ● 2V VTIMER TIMER Threshold Voltage V TIMER , FAULT = 0V ● 1.15 1.25 1.35 V IIN OFF/ON Input Current OFF/ON = 5V ● ±0.08 ±10 µA OFF/ON = 0V ● ±0.08 ±10 µA RESETIN Input Current RESETIN = 5V ● ±0.08 ±10 µA RESETIN = 0V ● ±0.08 ±10 µA 5VSENSE Input Current 5V SENSE = 5V, 5VOUT = 0V ● 66 100 µA 3VSENSE Input Current 3V SENSE = 3.3V, 3VOUT = 0V ● 66 100 µA 3VIN Input Current 3V IN = 3.3V ● 460 1000 µA 5VOUT Input Current 5V OUT = 5V, OFF/ON = 0V ● 0.9 1.5 mA 3VOUT Input Current 3V OUT = 3.3V, OFF/ON = 0V ● 0.9 1.5 mA ITIMER TIMER Pin Current OFF/ON = 0V, V TIMER = 0V ● –7 –5 –3 µA OFF/ON = 5V, VTIMER = 5V 6.6 mA RDIS 5VOUT Discharge Impedance OFF/ON = 5V ● 120 220 Ω 3VOUT Discharge Impedance OFF/ON = 5V ● 120 220 Ω VOL Output Low Voltage FAULT, PWRGD, RESETOUT, I = 2mA ● 0.25 0.4 V VPXG PRECHARGE Reference Voltage V PRECHARGE, V5VIN = 5V and 3.3V ● 0.90 1.00 1.10 V ELECTRICAL CHARACTERISTICSThe ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V5VIN = 5V and V3VIN = 3.3V unless otherwise noted. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to ground unless otherwise specified. TYPICAL PERFOR A CE CHARACTERISTICSUW 5V Current Foldback Profile 3.3V Current Foldback Profile OUTPUT VOLTAGE (V) OUTPUT CURRENT (A) 2 4 5
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RSENSE = 0.007Ω
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OUTPUT VOLTAGE (V) OUTPUT CURRENT (A) 2 4 513 RSENSE = 0.005Ω –50 –25 0 25 50 75 100 TEMPERATURE (°C) SUPPLY CURRENT (mA)
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1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 5VIN Supply Current vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICSUW 5VIN Undervoltage Lockout Voltage vs Temperature 3VIN Undervoltage Lockout Voltage vs Temperature 5VIN Foldback Current Limit Voltage vs Temperature –50 –25 0 25 50 75 100 TEMPERATURE (°C) UNDERVOLTAGE LOCKOUT VOLTAGE (V)
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2.60 2.55 2.50 2.45 2.40 LOW-TO-HIGH TRANSITION HIGH-TO-LOW TRANSITION –50 –25 0 25 50 75 100 TEMPERATURE (°C) UNDERVOLTAGE LOCKOUT VOLTAGE (V)
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2.60 2.55 2.50 2.45 2.40 LOW-TO-HIGH TRANSITION HIGH-TO-LOW TRANSITION –50 –25 0 25 50 75 100 TEMPERATURE (°C) FOLDBACK CURRENT LIMIT VOLTAGE (mV)
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5VOUT = 4V 5VOUT = 0V –50 –25 0 25 50 75 100 TEMPERATURE (°C) FOLDBACK CURRENT LIMIT VOLTAGE (mV)
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3VOUT = 2V 3VOUT = 0V –50 –25 0 25 50 75 100 TEMPERATURE (°C) CIRCUIT BREAKER TRIP VOLTAGE (mV)
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–50 –25 0 25 50 75 100 TEMPERATURE (°C) CIRCUIT BREAKER TRIP VOLTAGE (mV)
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–50 –25 0 25 50 75 100 TEMPERATURE (°C) OVERCURRENT FAULT RESPONSE TIME (µs)
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22.00 21.75 21.50 21.25 21.00 20.75 20.50 20.25 20.00 –50 –25 0 25 50 75 100 TEMPERATURE (°C) SHORT-CIRCUIT FAULT RESPONSE TIME (ns)
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–50 –25 0 25 50 75 100 TEMPERATURE (°C) GATE CURRENT (µA)
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–10 –11 –12 –13 –14 –15 3VIN Foldback Current Limit Voltage vs Temperature 5VIN Circuit Breaker Trip Voltage vs Temperature 3VIN Circuit Breaker Trip Voltage vs Temperature 5VIN/3VIN Overcurrent Fault Response Time vs Temperature 5VIN/3VIN Short-Circuit Fault Response Time vs Temperature Gate Current vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICSUW Gate ISINK vs Temperature Gate Voltage vs Temperature Power Good Threshold Voltage vs Temperature (3VOUT) Power Good Threshold Voltage vs Temperature (5V OUT) Timer Threshold Voltage vs Temperature SENSE Input Current vs Temperature 3VSENSE Input Current vs Temperature 3V IN Input Current vs Temperature Timer Current vs Temperature –50 –25 0 25 50 75 100 TEMPERATURE (°C) GATE ISINK (mA)
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FAULT = 0V –50 –25 0 25 50 75 100 TEMPERATURE (°C) GATE VOLTAGE (V)
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15.5 15.0 14.5 14.0 13.5 13.0 12.5 5VIN = 5V I = –1µA 5VIN = 3.3V –50 –25 0 25 50 75 100 TEMPERATURE (°C) POWER GOOD THRESHOLD VOLTAGE (V)
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3.00 2.95 2.90 2.85 2.80 –50 –25 0 25 50 75 100 TEMPERATURE (°C) POWER GOOD THRESHOLD VOLTAGE (V)
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4.75 4.70 4.65 4.60 4.55 4.50 –50 –25 0 25 50 75 100 TEMPERATURE (°C) TIMER THRESHOLD VOLTAGE (V)
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1.30 1.28 1.26 1.24 1.22 1.20 –50 –25 0 25 50 75 100 TEMPERATURE (°C) 5VSENSE INPUT CURRENT (µA)
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–50 –25 0 25 50 75 100 TEMPERATURE (°C) 3VSENSE INPUT CURRENT (µA)
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–50 –25 0 25 50 75 100 TEMPERATURE (°C) 3VIN INPUT CURRENT (µA)
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–50 –25 0 25 50 75 100 TEMPERATURE (°C) TIMER CURRENT (µA)
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–4.00 –4.25 –4.50 –4.75 –5.00 –5.25 –5.50 –5.75 –6.00
PWRGD (Pin 4) :Open Drain Power Good Digital Output. Connect the CPCI HEALTHY# signal to the PWRGD pin. PWRGD remains low while V3VOUT ≥ 2.9V and V5VOUT ≥ 4.65V. When either of the supplies falls below its power good threshold voltage, PWRGD will go high after a 50µs deglitching time. OUT (Pin 5): 5V Output Sense. The PWRGD pin will not pull low until the 5VOUT pin voltage exceeds 4.65V. If no 5V input supply is available, tie the 5VOUT pin to the 3VOUT pin in order to disable the 5VOUT power good function. GND (Pin 6): Chip Ground 3VOUT (Pin 7): 3.3V Output Sense. The PWRGD pin will not pull low until the 3VOUT pin voltage exceeds 2.90V. If no 3.3V input supply is available, tie the 3V OUT pin to the 5VOUT pin. 3VIN (Pin 8): 3.3V Supply Sense Input. An undervoltage lockout circuit prevents the switches from turning on when the voltage at the 3VIN pin is less than 2.5V. If no 3.3V input supply is available, connect a diode between 5V IN and 3VIN (tie anode to 5V IN and cathode to 3V IN ). See Figure 11. RESETOUT (Pin 1): Open Drain Digital Output. Connect the CPCI LOCAL_PCI_RST# signal to the RESETOUT pin. RESETOUT is the logical combination of RESETIN and PWRGD (see Table 4). TIMER (Pin 2): Current Fault Inhibit Timing Input. Connect a capacitor from TIMER to GND. With the chip turned off, the TIMER pin is internally held at GND. When the chip is turned on, a 5µA pull-up current source is connected to TIMER. Current limit and voltage compliance faults will be ignored until the voltage at the TIMER pin is greater than 1.25V. FAULT (Pin 3): Open Drain Digital I/O. FAULT is pulled low when a current limit fault is detected. Faults are ignored while the voltage at the TIMER pin is less than 1.25V. Once the TIMER cycle is complete, FAULT will pull low and the chip will latch off in the event of an overcurrent fault. The chip will remain latched in the off state until the OFF/ON pin is cycled high then low or the power is cycled. Forcing the FAULT pin low with an external pull-down will cause the chip to be latched into the off state after a 21µs deglitching time. TYPICAL PERFOR A CE CHARACTERISTICSUW RESETOUT, PWRGD and FAULT Output Low Voltage vs ISINK 5VOUT/3VOUT Discharge Impedance vs Temperature –50 –25 0 25 50 75 100 TEMPERATURE (°C) 3VOUT/5VOUT DISCHARGE IMPEDANCE (Ω)
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ISINK (mA) OUTPUT LOW VOLTAGE (V)
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1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 90°C 25°C –45°C UUUPI FU CTIO S
3VSENSE (Pin 9): 3.3V Current Limit Set. With a sense resistor placed in the supply path between 3V IN and 3VSENSE, the GATE pin voltage will be adjusted to maintain a constant voltage across the sense resistor and a con- stant current through the switch while the TIMER pin voltage is less than 1.25V. A foldback feature makes the current limit decrease as the voltage at the 3V OUT pin approaches GND. When the TIMER pin voltage exceeds 1.25V, the circuit breaker function is enabled. If the voltage across the sense resistor exceeds 56mV, the circuit breaker is tripped after a 21µs time delay. In the event the sense resistor voltage exceeds 150mV, the circuit breaker trips immediately and the chip latches off. To disable the 3.3V current limit, SENSE and 3VIN can be shorted together. GATE (Pin 10): High Side Gate Drive for the External 3.3V and 5V N-Channel pass transistors. Requires an external series RC network for the current limit loop compensation and setting the minimum ramp-up rate. During power-up, the slope of the voltage rise at the GATE is set by the 13µA current source connected to the internal charge pump and the external capacitor connected to GND or by the 3.3V or 5V current limit and the bulk capacitance on the 3V OUT or 5VOUT supply lines. During power-down, the slope of the ramp down voltage is set by the 200 µA current source connected to GND and the external GATE capacitor. The voltage at the GATE pin will be modulated to maintain a constant current when either the 3V or 5V supplies go into current limit while the TIMER pin voltage is less than 1.25V. If a current fault occurs after the TIMER pin voltage exceeds 1.25V, the GATE pin is immediately pulled to GND. SENSE (Pin 11): 5V Current Limit Set. With a sense resistor placed in the supply path between 5V IN and 5VSENSE, the GATE pin voltage will be adjusted to maintain a constant voltage across the sense resistor and a con- stant current through the switch while the TIMER pin voltage is less than 1.25V. A foldback feature makes the current limit decrease as the voltage at the 5V OUT pin approaches GND. When the TIMER pin voltage is greater than 1.25V, the circuit breaker function is enabled. If the voltage across the sense resistor exceeds 56mV but is less than 150mV, the circuit breaker is tripped after a 21µs time delay. In the event the sense resistor voltage exceeds 150mV, the circuit breaker trips immediately and the chip latches off. To disable the 5V current limit, short 5V SENSE and 5VIN together. 5VIN (Pin 12): 5V Supply Sense Input. An undervoltage lockout circuit prevents the GATE pin voltage from ramping up when the voltage at the 5VIN pin is less than 2.5V. If no 5V input supply is available, tie the 5VIN pin to the 3VIN pin. PRECHARGE (Pin 13): Precharge Monitor Input. An on- chip error amplifier with a 1V reference servos the DRIVE pin voltage to keep the precharge node at 1V. If the precharge function is not being used, tie the PRECHARGE pin to GND. DRIVE (Pin 14): Precharge Base Drive Output. Provides base drive for an external NPN emitter-follower which in turn biases the PRECHARGE node. If the precharge func- tion is not being used, allow the DRIVE pin to float. OFF/ON (Pin 15): Digital Input. Connect the CPCI BD_SEL# signal to the OFF/ON pin. When the OFF/ON pin is pulled low, the GATE pin is pulled high by a 13µA current source. When the OFF/ON pin is pulled high the GATE pin will be pulled to ground by a 200µA current source. The OFF/ON pin is also used to reset the electronic circuit breaker. If the OFF/ON pin is cycled high and low following the trip of the circuit breaker, the circuit breaker is reset, and a normal power-up sequence will occur. RESETIN (Pin 16): Digital Input. Connect the CPCI PCI_RST# signal to the RESETIN pin. Pulling RESETIN low will cause the RESETOUT pin to pull low.
V3VONLY No 5V Input Mode Window Voltage tOC Overcurrent Fault Detect tSC Short-Circuit Fault Detect OR 3.3V 100mV FAULT tOC V5VSENSE OR V3VSENSE FALL TIME ≤ 1µs, 5VIN = 5V, 3VIN = 3.3V
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OR 3.3V 200mV FAULT tSC V5VSENSE OR V3VSENSE FALL TIME ≤ 30ns, 5VIN = 5V, 3VIN = 3.3V
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–V3VONLY V3VONLY PWRGD V5VIN 3.3V
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V3VONLY = ⎟5VIN – 3VIN ⎢ 5VOUT = 3VOUT = 3.3V, 3VIN = 3.3V
When a circuit board is inserted into a live CompactPCI (CPCI) slot, the supply bypass capacitors on the board can draw huge supply transient currents from the CPCI power bus as they charge up. The transient currents can cause glitches on the power bus, causing other boards in the system to reset. The LTC1646 is designed to turn a board’s supply voltages on and off in a controlled manner, allowing the board to be safely inserted or removed from a live CPCI slot without glitching the system power supplies. The chip also pro- tects the supplies from shorts, precharges the bus I/O pins during insertion and extraction and monitors the supply voltages. BLOCK DIAGRA W TIMER 2 3VOUT 5VOUT ++– Q2 Q3200µA 13µA GATE 5VOUT 55mV 150mV VGG 5VSENSE 5VIN 2.5V UVL + +– 3VOUT 55mV 150mV CP3 REF 3VSENSE 3VIN RESETOUT1 2.5V UVL CP4 REF RESETIN 16 PWRGD 4 FAULT 3 OFF/ON 15 5µA 5Vin GND DRIVE PRECHARGE
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APPLICATIO S I FOR ATIOWU UU The LTC1646 is specifically designed for CPCI applica- tions where the chip resides on the plug-in board. LTC1646 Feature Summary 1. Allows safe board insertion and removal from a CPCI backplane. 2. Controls 5V and 3.3V CPCI supplies. 3. Current limit during power-up: the supplies are allowed to power up in current limit. This allows the chip to power up boards with widely varying capacitive loads without tripping the circuit breaker. The maximum allowable power-up time is programmable using the TIMER pin and an external capacitor.
R5 and C1 provide current control loop compensation. low and LOCAL_PCI_RST# is free to follow PCI_RST#.
- Programmable foldback current limit: a programmable
supply glitches to a minimum.
- Dual-level, programmable 5V and 3.3V circuit breakers:
the FAULT pin is pin is pulled low without delay.
- 15V high side drive for external 3.3V and 5V N-channel
- PWRGD output: monitors the voltage status of the
- PCI_RST# combined on-chip with HEALTHY# to create
- Precharge output: on-chip reference and amplifier pro-
card insertion and extraction.
- Space saving 16-pin SSOP package.
on the plug-in card is summarized in Table 1. Table 1. PCI Power Supply Requirements CPCI boards. The typical application is shown in Figure 1.
ground. The TIMER pin (Pin 2) is immediately pulled low. pulls high and LOCAL_PCI_RST# will be asserted low. OUT output can also be calculated.
- .12 5 5 (3) As a design aid, the timer period as a function of the timing capacitor using standard values from 0.01 µF to 1 µF is shown in Table 2. 20ms/DIV GATE 10V/DIV 5VOUT 3VOUT 5V/DIV TIMER 5V/DIV BD_SEL# 5V/DIV HEALTHY# 5V/DIV LCL_PCI_RST# 5V/DIV PRECHARGE 5V/DIV
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Figure 2. Normal Power-Up Sequence Figure 3. Normal Power-Down Sequence
where XVOUT = 5VOUT or 3VOUT. Table 3. ILIMIT(XVOUT) and IFOLDBACK(XVOUT) vs RSENSE where XVOUT = 3VOUT or 5VOUT. Figure 6. Short-Circuit Fault on 5V
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Figure 7. Circuit Breaker Equivalent 2R power being dissipated by it.
signal to create LOCAL_PCI_RST# (see Table 4). Table 4. LOCAL_PCI_RST# Truth Table applications that need precharge voltages greater than 1V.
Figure 10. 3.3V Supply Only Typical Application Figure 8. Precharge Voltage <1V Application Circuit
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Figure 9. Precharge Voltage >1V Application Circuit Table 5. R1 and R2 Resistor Values vs Precharge Voltage
Figure 11. 5V Supply Only Typical Application Figure 12. BD_SEL# Pushbutton Toggle Switch through a diode (BAV16W) to 5VIN. pressing a pushbutton switch on the CPCI plug-in board.
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Figure 14. Recommended Layout for
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ringing is highly recommended. clip the transient to a safe level and snubber networks. Figure 13. Place Transient Protection Device Close to the LTC1646
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around the LTC1646 is shown in Figure 14.
Table 6. N-Channel Power MOSFET Selection Guide Table 7. Sense Resistor Selection Guide Figure 15. In Hot Swap applications where load currents copper foil is 0.03" for each ampere of DC current. that can be used with the LTC1646’s circuit breakers. component mentioned throughout the LTC1646 data sheet.
Table 8. Manufacturers’ Web Site Information furnished by Linear Technology Corporation is believed to be accurate and reliable. tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
- CONTROLLING DIMENSION: INCHES
Figure 15. Recommended Layout for Power MOSFET, Sense Resistor, and Gate Components