The LMH6321 is a high speed unity gain buffer that slews at 1800 V/µs and has a small
signal bandwidth of 110 MHz while driving a 50Ω load. It can drive ±300 mA continuously and will
not oscillate while driving large capacitive loads.
The LMH6321 features an adjustable current limit. The current limit is continuously
adjustable from 10 mA to 300 ma with a ±5 mA ±5% accuracy. The current limit is set by adjusting an
external reference current with a resistor. The current can be easily and instantly adjusted, as
needed by connecting the resistor to a DAC to form the reference current. The sourcing and sinking
currents share the same current limit.
The LMH6321 is available in a space saving 8-pin SO PowerPAD or a 7-pin DDPAK power
package. The SO PowerPAD package features an exposed pad on the bottom of the package to increase
its heat sinking capability. The LMH6321 can be used within the feedback loop of an operational
amplifier to boost the current output or as a stand alone buffer.
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