1

DATASHEET

Dual, Noninverting Power MOSFET Radiation Hardened

Drivers

HS-4424DRH, HS4424DEH

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.

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.

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.

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.

Features

• 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)

- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . 50krad(Si)*

*Limit established by characterization

• Low voltage lockout feature . . . . . . . . . . . . . . . . . . . . . . . . <8V

• Wide supply voltage range . . . . . . . . . . . . . . . . . . . . 8V to 18V

• Propagation delay . . . . . . . . . . . . . . . . . . . .250ns (maximum)

•Low power consumption

- 40mW with inputs high

- 20mW with inputs low

• Low equivalent input capacitance . . . . . . . . . . 3.2pF (typical)

• ESD protected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4kV

Applications

• Switching power supplies

•DC/DC converters

•Motor controllers

TABLE 1. HS4424 PRODUCT FAMILY SPECIFIC UVLO Vth

PART NUMBER

UVLO (V)

HS-4424RH

HS-4424EH

<10

HS4424BRH

HS4424BEH

<7.5

HS4424DRH

HS4424DEH

<8

FIGURE 1. TYPICAL APPLICATION

FIGURE 2. UNDERVOLTAGE LOCKOUT vs TEMPERATURE

CONTROLLER

PWM

IN B

IN A

OUT A

OUT B

VCC

+8V TO +18V

GND

HS-4424D

HS-1825ARH

7.2

7.3

7.4

7.5

7.6

7.7

-55

25

125

TEMPERATURE (°C)

UVLO_r

UVLO_f

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

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