ISL74422BRH
®
Data Sheet
October 2003
FN6057
Radiation Hardened, 9A, Non-Inverting
Power MOSFET Driver
Features
• QML Qualified per MIL-PRF-38535 Requirements
• Electrically Screened to DSCC SMD # 5962-03248
The radiation hardened ISL74422BRH is a non-inverting,
monolithic high-speed MOSFET driver designed to convert a
5V CMOS logic input signal into a high current output at
voltages up to 18V. Its fast rise/fall times and high current
output allow very quick control of even the largest power
MOSFETs in high frequency applications.
• Radiation Environment
- Total Dose (Max) . . . . . . . . . . . . . . . . . . . . 300krad(SI)
- Latch-Up Immune
• I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A (Min)
PEAK
The input of the ISL74422BRH can be directly driven by our
IS-1825ASRH and IS-1845ASRH PWM devices. The 9A
high current output minimizes power losses in MOSFETs by
rapidly charging and discharging large gate capacitances. A
supply UVLO (Under Voltage Lock Out) circuit insures
predictable turn-on and turn-off of the driver.
• T
• T
(C = 10nF) . . . . . . . . . . . . . . . . . . . . . 135ns (Max)
L
FALL
RISE
(C = 10nF) . . . . . . . . . . . . . . . . . . . . . 135ns (Max)
L
• Prop Delay High-Low (C = 10nF) . . . . . . . . . 175ns (Max)
L
• Prop Delay Low-High (C = 10nF) . . . . . . . . . 175ns (Max)
L
• Rising UVLO Threshold . . . . . . . . . . . . . . . . . . 7.5V (Max)
• Falling UVLO Threshold. . . . . . . . . . . . . . . . . . .6.0V (Min)
• UVLO Hysteresis . . . . . . . . . . . . . . . . . . . . . . . .0.3V (Min)
• Wide Supply Voltage Range . . . . . . . . . . . . . . . 8V to 18V
Constructed with the Intersil dielectrically isolated Rad-Hard
Silicon Gate (RSG) BiCMOS process, these devices are
immune to single event latch-up and have been specifically
designed to provide highly reliable performance in harsh
radiation environments.
• Low Stand-by Current Consumption
Specifications for Rad Hard QML devices are controlled
by the Defense Supply Center in Columbus (DSCC). The
SMD numbers listed here must be used when ordering.
- Input Low . . . . . . . . . . . . . . . . . . . . . . . . . .2.1mA (Max)
- Input High . . . . . . . . . . . . . . . . . . . . . . . . . .2.7mA (Max)
Applications
Detailed Electrical Specifications for these devices are
contained in SMD 5962-03248. A “hot-link” is provided
on our website for downloading.
• Switching Power Supplies
• DC/DC Converters
• Motor Controllers
Pinout
ISL74422BRHF (FLATPACK CDFP4-F16)
TOP VIEW
Ordering Information
INTERNAL
MKT. NUMBER
TEMP.
NC
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VS (OB)
VS (OB)
NC
o
ORDERING NUMBER
5962F0324801VXC
5962F0324801QXC
RANGE ( C)
-55 to 125
-55 to 125
-55 to 125
ISL74422BRHVF
ISL74422BRHQF
VS (IB)
VIN
+VOUT
-VOUT
NC
GND (IB)
NC
ISL74422BRHF/PROTO ISL74422BRHF/PROTO
NC
NC
GND (OB)
GND (OB)
NOTES:
1. Pin 3 provides the supply voltage for the control logic. It is not
internally connected to pins 15 and 16 for noise immunity
purposes, but it must be connected externally.
2. Pin 5 is the control logic return. It is not internally connected to
pins 8 and 9 for noise immunity purposes, but it must be
connected externally.
3. Pins 8 and 9 must be connected to GND.
4. Pins 12 and 13 must be externally connected.
5. Pins 15 and 16 must be connected to VS.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
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