DATASHEET
Dual, Noninverting Power MOSFET Radiation Hardened
Drivers
HS-4424DRH, HS4424DEH
Features
The radiation hardened HS-4424 family are noninverting, dual,
monolithic high-speed MOSFET drivers designed to convert low
voltage control input signals into higher voltage, high current
outputs. The HS-4424DRH, HS-4424DEH are fully tested
across the 8V to 18V operating range.
• Electrically screened to DLA SMD# 5962-99560
• QML qualified per MIL-PRF-38535 requirements
• Latch-up immune
• Radiation environment
• High dose rate (50-300rad(Si)/s). . . . . . . . . . . . . 300krad(Si)
The inputs of these devices can be directly driven by the
HS-1825ARH PWM device or by our ACS/ACTS and HCS/HCTS
type logic devices. The fast rise times and high current outputs
allow very quick control of high gate capacitance power
MOSFETs in high frequency applications.
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . 50krad(Si)*
*Limit established by characterization
• IPEAK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >2A (minimum)
• Matched rise and fall times (CL = 4300pF). . 75ns (maximum)
The high current outputs minimize power losses in MOSFETs by
rapidly charging and discharging the gate capacitance. The
output stage incorporates a low voltage lockout circuit that
puts the outputs into a three-state mode when the supply
voltage is below its Undervoltage Lockout (UVLO) threshold
voltage.
• Low voltage lockout feature . . . . . . . . . . . . . . . . . . . . . . . . <8V
• Wide supply voltage range . . . . . . . . . . . . . . . . . . . . 8V to 18V
• Propagation delay . . . . . . . . . . . . . . . . . . . .250ns (maximum)
• Consistent delay times with VCC changes
• Low power consumption
- 40mW with inputs high
- 20mW with inputs low
Constructed with Intersil’s 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 equivalent input capacitance . . . . . . . . . . 3.2pF (typical)
• ESD protected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4kV
TABLE 1. HS4424 PRODUCT FAMILY SPECIFIC UVLO Vth
Applications
• Switching power supplies
• DC/DC converters
PART NUMBER
UVLO (V)
<10
HS-4424RH
HS-4424EH
• Motor controllers
HS4424BRH
HS4424BEH
<7.5
<8
HS4424DRH
HS4424DEH
7.7
+8V TO +18V
VCC
UVLO_f
7.6
UVLO_r
7.5
OUT A
IN A
PWM
7.4
7.3
7.2
CONTROLLER
IN B
OUT B
HS-1825ARH
HS-4424D
GND
-55
25
125
TEMPERATURE (°C)
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. UNDERVOLTAGE LOCKOUT vs TEMPERATURE
October 15, 2015
FN8747.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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