IRF IRU3033 8-pin pwm switcher and linear controller ic Datasheet

Data Sheet No. PD94147
IRU3033
8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC
FEATURES
DESCRIPTION
LDO Controller allows the use of a low cost pass
transistor for the I/O supply
8-Pin SOIC combines switching and linear
controller
Internal pre-regulator eliminates cross talk
between switching and linear regulators
Automatic shut down of the linear regulator when
connected to the Vcc2 detect pin
On-Board MOSFET Driver
Fastest transient response of any controller
method (0 to 100% Duty Cycle in 100ns)
1% Internal Voltage Reference
Internal Under-Voltage Lockout protects MOSFET
during start-up
The IRU3033 IC combines a switching controller and a
linear regulator controller all in a compact 8-pin surface
mount package, providing a total solution for dual supply processor applications such as an Intel P55C , AMD
K6 , as well as Cyrix 6X86L and the M2 processors. Typically in these applications a dual supply regulator converts 5V to 3.3V for I/O supply and a jumper
programmable supply of 1.25V to 3.5V for Core supply.
The linear regulator controller portion in the IRU3033 is a
programmable controller allowing flexibility for the I/O
regulator and has a minimum of 50mA drive current capability designed to provide ample current for an external pass transistor. The IC uses an internal regulator
generated from the 12V supply to power the controller
as well as the 12V supply to drive the power MOSFET,
allowing a low cost N-channel MOSFET switch to be
used. The IC also includes an error comparator for fast
transient response, a precise voltage reference for setting the output voltage as well as a direct drive of the
MOSFET for the minimum part count.
APPLICATIONS
Dual supply low voltage processor applications,
such as: P55C , CYRIX M2 , POWER PC
and AMD K6
Simple 5V to 3.3V switcher for Pentium with AGP
or Pentium II applications
TYPICAL APPLICATION
Q1
5V
R10
C1
R6
C6
R9
12V
D2
C8
V12
R7
CPU
Drv2 VFB2
R8
IRU3033
Drv1
I/O
5V
Gnd
Vcc2 Det
V12(SW) VFB1 VHYST
L2
C3
R3
Core
C5
R4
L1
C7
Q2
C2
D1
R5
Figure 1 - Typical application of IRU3033 in a flexible mother board designed for
Intel P55 , P54 , AMD K5, K6 as well as Cyrix M1 and M2 applications.
Notes: P54C, P55C, Pentium II are
trademarks of Intel Corp. K5 & K6
are trademarks of AMD Corp. Cyrix
6X86L, M1, M2 are trademarks of
Cyrix Corp. Power PC is trademark
of IBM Corp.
PACKAGE ORDER INFORMATION
TA (°C)
0 To 70
Rev. 1.7
07/17/02
8-PIN PLASTIC SOIC (S)
IRU3033CS
www.irf.com
1
IRU3033
ABSOLUTE MAXIMUM RATINGS
V12,V12(SW) Supply Voltages .......................................
Fb Pin Voltages ........................................................
Storage Temperature Range ......................................
Operating Junction Temperature ................................
20V
-0.3V To 5V
-65°C To 150°C
0°C To 150°C
PACKAGE INFORMATION
8-PIN PLASTIC SOIC (S)
TOP VIEW
Drv1 1
8
V12
2
7
Drv2
VFB1 3
6
VFB2
5
Gnd
V12(SW)
VHYST
4
uJA =1608C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, the following specification applies over V12=V12(SW) =12V and TA=0 to 70°C. Low duty
cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature.
PARAMETER
Linear Controller Section
Fb Voltage Initial Accuracy
Fb Voltage Total Variation
Fb Voltage Line Regulation
Fb Input Bias Current
Maximum Drive Current
V12 Supply Current
Switching Controller Section
Fb Voltage Initial Accuracy
Fb Voltage Total Variation
Fb Voltage Line Regulation
Fb Input Bias Current
Min On Time
SYM
VFB2
TEST CONDITION
MIN
TYP
MAX
UNITS
TJ=258C, Drv2=VFB2, CL=100mF
Drv2=VFB2, CL=100mF
10<V12<14V, Drv2=VFB2, CL=100mF
VFB2=1.25V
VFB2=1V, VFB1=1.5V
VFB2=1V, VFB1=1.5V, IDRV2=0
1.237
1.225
1.250
1.250
0.2
1.262
1.275
V
V
%
mA
mA
mA
VFB1
TJ=258C
1.237
1.225
IFB1
VFB1=1.25V
VFB1 is sq wave with 300ns on
time and 2ms off time
VFB1 is sq wave with 300ns off
time and 2ms on time
ISOURCE=500mA, VFB1=1.5V
ISINK=500mA, VFB1=1V
VFB1=1V, VFB2=1.5V
VFB1=1V
VFB1=1.5V
Load=IRL3303
IFB2
IDRV(max)
I12
Min Off Time
VHYST Pin Output-HI
VHYST Pin Output-LO
Supply Current
Maximum Duty Cycle
Minimum Duty Cycle
Gate Drive Rise/Fall Time
2
I12(SW)
DMAX
DMIN
VGATE
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-1
+1
50
5
1.250
1.250
0.2
800
V
V
%
mA
ns
800
ns
-1
1.262
1.275
+1
11
1
10
100
0
70
V
V
mA
%
%
ns
Rev. 1.7
07/17/02
IRU3033
PIN DESCRIPTIONS
PIN #
1
PIN SYMBOL PIN DESCRIPTION
Drv1
The PWM output of the switching controller. This pin is a totem pole drive that is connected to the gate of the power MOSFET. A resistor may be placed from this pin to the
gate in order to reduce switching noise.
V12(SW)
This pin supplies the voltage to the PWM drive and hysteresis circuitry and it is connected
to the 12V supply. A 1mF, high frequency capacitor must be connected from this pin to
ground to provide the peak current for charging and discharging of the MOSFET.
VFB1
A resistor divider from this pin to the output of the switching regulator and ground sets the
Core supply voltage.
VHYST
A resistor and a 10pF capacitor is connected from this pin to the V FB1 pin to set the output
ripple voltage for the switching regulator.
Gnd
This pin is connected to the IC substrate and must be connected to the lowest potential in
the system.
VFB2
The feedback pin of the linear regulator. A resistor divider from this pin to the output of the
linear regulator and ground sets the I/O supply voltage.
Drv2
The drive pin of the linear regulator. This pin controls the base of a transistor or the gate
of a MOSFET acting as the series pass element for the linear regulator.
V12
This pin provides the biasing for the chip and drive for the linear regulator controller. It is
connected to 12V supply. A 10V resistor in series from this pin to the 12V supply and a
1mF, high frequency capacitor connected from this pin to ground is required to filter the
switching noise of the switching regulator.
2
3
4
5
6
7
8
BLOCK DIAGRAM
V12(SW)
VHYST
VFB1
V12
2
4
3
8
Drv2
7
UVLO
5V Reg
Drv 1
1
VREF
PWM Control
Gnd
1.25V
5
VFB2
6
Figure 2 - Simplified block diagram of the IRU3033.
Rev. 1.7
07/17/02
www.irf.com
3
IRU3033
TYPICAL APPLICATION
Pentium Dual Supply Application
Q1
5V
I/O
C1
C6
R11
R10
R13
C9
R6
CPU
R9
5V
12V
V12
C8
Drv1
U1
R7
D2
Drv2 VFB2
R8
Gnd
Vcc2 Det
V12(SW) VFB1 VHYST
L2
C3
R1
R3
C5
Core
L1
C7
R4
Q2
C2
C4
R2
R5A
R5B
R5C
R5D
JP1 1
3
5
7
2
4
6
8
R5E
D1
Figure 3 - Typical application of IRU3033 in a flexible motherboard with the 4-bit VID output voltage selection. This
circuit uses a single jumper that programs the output voltage in 16 steps with 0.1V steps from 2V to 3.5V, designed
for Intel P55 ,P54 , AMD K5 & K6 as well as Cyrix M1 and M2 applications. The Vcc2 Det pin automatically shuts down the I/O regulator when a single plane processor is dropped in the socket.
JP1 JP1 JP1 JP1 Output
1-2 3-4 5-6 7-8 Voltage
0
0
0
0
3.5
0
0
0
1
3.4
0
0
1
0
3.3
0
0
1
1
3.2
0
1
0
0
3.1
0
1
0
1
3.0
0
1
1
0
2.9
0
1
1
1
2.8
1
0
0
0
2.7
1
0
0
1
2.6
1
0
1
0
2.5
1
0
1
1
2.4
1
1
0
0
2.3
1
1
0
1
2.2
1
1
1
0
2.1
1
1
1
1
2.0
4
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0 = Jumper block is installed.
1 = Jumper block is not installed.
Rev. 1.7
07/17/02
IRU3033
APPLICATION PARTS LIST
Pentium Dual Supply
Ref Desig
U1
Q1
Q2
Description
LDO/Switcher IC
MOSFET
MOSFET
Qty
1
1
1
D2
D1
Diode, GP
Schottky Diode
1
1
L2
Inductor
1
L1
R1
R2
R3
R4A*
R4B*
R5A
R5B
R5C
R5D
R5E
R6
R7
R8
R9
R10
R11
R13
C1
C2
C3
C4
C5
C6
C7
C8
C9
HS1
HS2
HS3
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Heat Sink
Heat Sink
Heat Sink
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
Part #
IRU3033CS (8-Pin SOIC)
MTP3055 (TO-220)
IRL3303 (TO-220)
IRL3103S (TO-263) (Note 1)
1N4148
MBR1045CT (TO-220)
MBRB1545CT (TO-263) (Note1)
Core: T50-18, L=4m H
Turns: 10T, 18 AWG
L=2m H
22V, 5%, SMT 1206 size
10V, 5%, SMT 1206 size
324KV, 1%, SMT 0805 size
806V, 1%, SMT 0805 size
90.9KV, 1%, SMT 0805 size
1.24KV, 1%, SMT 0805 size
2.49KV, 1%, SMT 0805 size
4.99KV, 1%, SMT 0805 size
1KV, 1%, SMT 0805 size
1.30KV, 1%, SMT 0805 size
2 KV, 1%, SMT 0805 size
1.21KV,1%, SMT 0805 size
1 KV, 5%, SMT 0805 size
10V, 5%, SMT 0805 size
1KV, 5%, SMT 0805 size
2.4KV, 5%, SMT 0805 size
7.5KV, 5%, SMT 0805 size
6MV1500GX, 1500µF, 6.3V, Elect
6MV1500GX, 1500µF, 6.3V, Elect
1m F, Ceramic, SMT 0805 size
470pF, Ceramic, SMT 0805 size
10pF, Ceramic, SMT 0805 size
6MV1500GX, 1500m F, 6.3V, Elect
6MV1500GX, 1500m F, 6.3V, Elect
1m F, Ceramic, SMT 0805 size
470p, Ceramic, SMT 0805 size
For MOSFET, 577002
For Schottky Diode , 577002
For Q1, 507222 (I/O curren<5A)
576602 (I/O current< 3.5A)
Manuf
IR
Motorola
IR
Motorola
Micro Metal
(core)
Sanyo
Sanyo
Sanyo
Sanyo
Sanyo
Aavid
Aavid
Aavid
*R4 is a parallel combination of R4A and R4B.
Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and
MBR1545CT for D2 in TO-263 packages with minimum of 1" square copper pad can be used.
Rev. 1.7
07/17/02
www.irf.com
5
IRU3033
TYPICAL APPLICATION
5V to 3.3V for Pentium Application with AGP or Pentium II Application without ATX power supply Dual
mode Operation between Switching or Linear mode.
R13
12V
C9
R9
R6
V12
C8
Drv1
Drv2 VFB2
U1
V1 2 ( S W ) VFB1
C3
R10
R1A
Gnd
R7
VH Y S T
R3
C5
L2
R1B
VOUT
C7
L1
5V
C1
D1
C4
Q2
C2
R4
R2
R5
Figure 4 - This unique application of IRU3033 allows the designer to switch between Linear or Switching mode of
operation using a single IC. This circuit has the flexibility to be used for low current operation in Linear mode for cost
reasons and yet be able to operate in the Switching mode if the load current increases and the heat generated by
the Linear operation will be an issue.
The table below describes the components that will be effected for the two modes of operation.
Mode of Operation L1
Switching
V
Linear
S
L2
D1
C4
C5 R1A R1B R2
R3
R4
R5
R6
R7
V
S
V
O
V
O
V
O
V
O
V
V
V
O
V
V
O
V
V = See parts list for value
6
O
V
V
O
S = Short
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V
O
O = Open
Rev. 1.7
07/17/02
IRU3033
APPLICATION PARTS LIST
5V to 3.3V for Pentium Application with AGP or Pentium II Application without ATX power supply Dual
mode Operation between Switching or Linear mode.
Ref Desig Description
Qty
U1
LDO/Switcher IC 1
Q2
MOSFET
1
D1
Schottky Diode
1
L2
Inductor
1
L1
R1A
R1B
R2
R3
R4
R5
R6
R7
R9
R10
R13
C1, 2
C3
C4
C5
C7
C8
C9
HS1
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Heat Sink
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
HS2
Heat Sink
1
Part #
IRU3033CS (8-Pin SOIC)
IRL3303 (TO-220)
IRL3103S (TO-263) (Note 1)
MBR1045CT (TO-220)
MBRB1545CT (TO-263) (Note1)
Core: T50-18,L=4mH
Turns: 10T, 18 AWG
L=2mH
2.4KV, 5%, SMT 1206 size
22V, 5%, SMT 1206 size
10V, 5%, SMT 1206 size
249KV, 1%, SMT 0805 size
1KV, 1%, SMT 0805 size
576V, 1%, SMT 0805 size
180V, 1%, SMT 0805 size
100V, 1%, SMT 0805 size
10V, 5%, SMT 1206 size
1KV, 5%, SMT 1206 size
7.5KV, 5%, SMT 1206 size
6MV1500GX, 1500mF, 6.3V, Elect
1mF, Ceramic, SMT 0805 size
470pF, Ceramic, SMT 0805 size
10pF, Ceramic, SMT 0805 size
6MV1500GX, 1500uF, 6.3V, Elect
1mF, Ceramic, SMT 0805 size
470pF, Ceramic, SMT 0805 size
For MOSFET in Switching mode, 577002
For MOSFET in Linear mode:
507222 (3.3V current<5A),
576602 (3.3V current< 3.5A)
For Schottky Diode, 577002
Manuf
IR
IR
Motorola
Micro Metal
(core)
Sanyo
Sanyo
Sanyo
Sanyo
Aavid
Aavid
Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and MBR1545CT
for D2 in TO-263 packages with minimum of 1" square copper pad can be used.
Rev. 1.7
07/17/02
www.irf.com
7
IRU3033
TYPICAL APPLICATION
5V to 3.3V for Pentium application with AGP or Pentium II application
without ATX power supply switching mode operation.
12V
R9
C8
V12
Drv2
V FB2
Drv1
U1
Gnd
V12(SW) V FB1 V HYST
C3
R3
C5
L2
R1
VOUT
C7
L1
Q2
5V
C1
C4
C2
R4
D1
R2
R5
Figure 5 - The circuit in figure 4 is the application of the IRU3033 in a switching mode only. This circuit can be used
to generate a low cost 5V to 3.3V for either Pentium application with AGP socket or in Pentium II applications
where it is desirable to generate an accurate on board 3.3V supply.
Ref Desig
Description
U1
Q2
LDO/Switcher IC
MOSFET
Qty
1
1
D1
Schottky Diode
1
L2
Inductor
1
L1
R1
R9
R2
R3
R4
R5
C1, 2
C3
C4
C5
C7
C8
HS1
HS2
Inductor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Heat Sink
Heat Sink
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
Part #
IRU3033CS (8-Pin SOIC)
IRL3303 (TO-220)
IRL3103S (TO-263) (Note 1)
MBR1045CT (TO-220)
MBRB1545CT (TO-263) (Note 1)
Core: T50-18, L=4mH
Turns: 10T, 18 AWG
L=2mH
22V, 5%, SMT 1206 size
10V, 5%, SMT 0805 size
10V, 5%, SMT 1206 size
249KV, 1%, SMT 0805 size
1KV, 1%, SMT 0805 size
576V, 1%, SMT 0805 size
6MV1500GX, 1500mF, 6.3V, Elect
1mF, Ceramic, SMT 0805 size
470pF, Ceramic, SMT 0805 size
10pF, Ceramic, SMT 0805 size
6MV1500GX, 1500mF, 6.3V, Elect
1mF, Ceramic, SMT 0805 size
For MOSFET, 577002
For Schottky Diode, 577002
Manuf
IR
IR
Motorola
Micro Metal
(core)
Sanyo
Sanyo
Sanyo
Sanyo
Aavid
Aavid
Note 1: For the applications where it is desirable to eliminate the heat sink, the IRL3103S for Q2 and
MBR1545CT for D2 in TO-263 packages with minimum of 1" square copper pad can be used.
8
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Rev. 1.7
07/17/02
IRU3033
APPLICATION INFORMATION
Introduction
The IRU3033 device is an application specific product
designed to provide an on board dual supply for the new
generation of microprocessors requiring separate Core
and I/O supplies. One of the processors fitting this requirement is the new Intel P55C multimedia microprocessor. Intel specifies a Core voltage of 2.8V nominal
(±100mV max) with maximum Core supply current of
6A while the I/O supply is set for 3.3V with a maximum
I/O current of 0.65A. However, in most applications the
I/O regulator also provides the voltage for other IC functions such as the chip set, cache, etc. Typically a low
cost solution such as a Low Dropout (LDO) Linear Regulator is selected to provide the I/O supply with the maximum designed current of 3A, keeping the power dissipation and the heat sink to a reasonable size. The Core
supply regulator, however, if also selected to be a linear
regulator, will be dissipating a maximum of 12.6W [(5V2.8V)X5.7A] of power, which requires a substantial
amount of heat sinking and perhaps forced air cooling in
order to keep it operational. Some manufacturers suggest using two regulators to current share and therefore
distribute the power dissipation equally between the regulators. The problem is that, in order to equally current
share you need to sense both currents and force the
slave regulator to match the master regulator. This can
be done, but at the cost of the circuit complexity and
much higher system cost and the total power dissipation is still the same. In fact, if the task is to design a
flexible motherboard to accommodate the Cyrix 6X86L
or their future MMX processors, then the power dissipation could easily reach 20W or more. At this power dissipation level the choice for a switching regulator approach becomes evident. However, the main reason that
designers have always shied away from the switching
regulators is their higher price tag and more complex
circuit design that is associated with this kind of technique.
The IRU3033 device is designed to take advantage of
the high efficiency of the switching regulator technique
for the Core supply while maintaining the low cost LDO
regulator for the I/O supply by offering both control functions in a single 8-pin surface mount package. In fact,
as the typical application circuit shows, one can design
a complete flexible motherboard using the IRU3033 and
a few external components yielding a very low component count switching regulator and with an addition of a
low cost pass transistor for the I/O supply provide a complete dual supply power solution.
Rev. 1.7
07/17/02
LDO Section
The output voltage of the LDO regulator is externally programmable via 2 external resistors from 1.25V to 5V.
The internal voltage reference of the LDO regulator is set
to 1.25V and the output of the regulator can be programmed using the following formula:
VOUT = (1 + R1/R2) 3 VREF
Where:
VREF = 1.25V Typical
R1 = Resistor connected from V OUT to the V FB2 pin of
IRU3033.
R2 = Resistor connected from VFB2 pin to Gnd.
The IRU3033 requires the use of an output capacitor as
part of the frequency compensation in order to be stable.
Typical designs for the microprocessor applications use
standard electrolytic capacitors with typical ESR in the
range of 50 to 100mV and an output capacitance of 500
to 1000mF. Fortunately as the capacitance increases,
the ESR decreases resulting in a fixed RC time constant. The IRU3033 takes advantage of this phenomena
in making the overall regulator loop stable. For most applications a minimum of 100mF aluminum electrolytic
capacitor such as Sanyo, MVGX series, Panasonic FA
series or Nichicon PL series insures both stability and
good transient response.
An external filtering is suggested as shown in the application circuit that reduces the switching ripple that might
show in the output of the LDO regulator.
Switching Controller Operation
The operation of the switching controller is as follows:
After the power is applied, the output drive (Drv1) goes to
100% duty cycle and the current in the inductor charges
the output capacitor causing the output voltage to increase. When output reaches a pre-programmed set
point the feedback pin (V FB1) exceeds 1.25V causing the
output drive to switch low and the VHYST pin to switch
high which jumps the feedback pin higher than 1.25V
resulting in a fixed output ripple which is given by the
following equation:
DVo = (Rt/RB)311
Where:
Rt = Top resistor of the output divider, resistor connected from VOUT to the VFB1 pin of IRU3033.
RB = Bottom resistor of the divider, resistor connected
from VFB1 pin to VHYST pin.
www.irf.com
9
IRU3033
For example, if Rt=1K and RB=422K, then the output
ripple is:
DVo = (1/422)311 = 26mV
The advantage of fixed output ripple is that when the
output voltage changes from 2V to 3.5V, the ripple voltage remains the same which is important in meeting the
Intel maximum tolerance specification.
Switcher Output Voltage Setting
The output voltage of the switcher can be set using the
following equations:
Frequency Calculation
The IRU3033 frequency of operation is calculated using
the following formula:
Fs = [(Vo3(1 - D)3ESR)] / (L3DVo)
(MHz)
Where:
Vo = Output voltage (V)
D = Duty cycle
ESR = Output capacitor ESR (V)
L = Output inductance (mH)
DVo = Output ripple voltage (V)
For our example:
Assuming, Vo=3.38V and the selected output ripple is ≈
1.3%(44mV) of the output voltage, a set of equations
are derived that selects the resistor divider and the hysteresis resistor.
D ≈ (Vo + Vf) / VIN
Where:
Vf = Forward voltage drop of the Schottky diode.
D = (3.38 + 0.5) / 5 = 0.78
Assuming, Rt=1KV , 1%:
The ESR=18mV for 2 of the Sanyo 1500mF, 6MV1500GX
caps. If L=3.5mH then, Fs is calculated as follows:
RH = (113Rt) / DV
Where:
Rt = Top resistor of the resistor divider.
RH = Hysteresis resistor connected between pins 3
and 4 of the IRU3033.
DVo = Selected output ripple (typically 1% to 2% of
output voltage).
Fs =
[(3.38 3 (1 - 0.78) 3 0.018)]
= 0.087MHz
(3.5 3 0.044)
Fs = 87KHz
Assuming, DVo=44mV:
RH = (1131000) / 0.044 = 250KV
Select RH = 249KV, 1%
The bottom resistor of the divider is then calculated using the following equations:
RB = Rt / X
Where:
RB = Bottom resistor of the divider
VREF = 1.25V typical
X = [(Vo +
DVo
)/VREF] - 1
2
X = [(3.38 +
0.044
)/1.25] - 1 = 1.72
2
RB = 1000 / 1.72 = 580V
Select RB = 576V, 1%
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information
Data and specifications subject to change without notice. 02/01
10
www.irf.com
Rev. 1.7
07/17/02
IRU3033
(S) SOIC Package
8-Pin Surface Mount, Narrow Body
H
A
B
C
E
DETAIL-A
PIN NO. 1
L
D
DETAIL-A
0.386 0.015 x 458
T
K
I
F
J
G
8-PIN
SYMBOL
A
B
C
D
E
F
G
H
I
J
K
L
T
MIN
MAX
4.80
4.98
1.27 BSC
0.53 REF
0.36
0.46
3.81
3.99
1.52
1.72
0.10
0.25
78 BSC
0.19
0.25
5.80
6.20
08
88
0.41
1.27
1.37
1.57
NOTE: ALL MEASUREMENTS ARE IN MILLIMETERS.
Rev. 1.7
07/17/02
www.irf.com
11
IRU3033
PACKAGE SHIPMENT METHOD
PKG
DESIG
S
PACKAGE
DESCRIPTION
PIN
COUNT
PARTS
PER TUBE
PARTS
PER REEL
T&R
Orientation
8
95
2500
Fig A
SOIC, Narrow Body
1
1
1
Feed Direction
Figure A
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information
Data and specifications subject to change without notice. 02/01
12
www.irf.com
Rev. 1.7
07/17/02
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