Features High slew rate 1800 V/μs Wide bandwidth 110 MHz Continuous output current ±300 mA Output current limit tolerance ±5 mA ±5% Wide supply voltage range 5V to ±15V Wide temperature range −40°C to +125°C Adjustable current limit High capacitive load drive Thermal shutdown error flag Description 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 PSOP or a 7-pin TO-263 power package. The PSOP 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. Applications • Line driver • Pin driver • Sonar driver • Motor control

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Typical Application *click for larger image	Connection Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LMH6321 300 mA High Speed Buffer with Adjustable Current Limit	590 Kbytes	10-Apr-07	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1461: Application Note 1461 LMH6321 (PSOP and TO-263) Single Open Loop High Speed Buffer Evaluation Boards	6341 Kbytes	27-Nov-06	中文

More Application Notes

Title		Size	Date	Other Language
	AN-1681: Application Note 1681 Design Migration from the LM1881 to the LMH1980	143 Kbytes	2-Aug-07	日本語
	AN-1599: Application Note 1599 LMH1981 Evaluation Board Instruction Manual	503 Kbytes	11-Feb-09	日本語
	AN-1618: Application Note 1618 LMH1980 Evaluation Board Instruction Manual	674 Kbytes	19-Jul-07	日本語

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH6321MR	VIP III	0	15575	0	0	1212500	3	344050185
LMH6321MRX	VIP III	0	15575	0	0	1212500	3	344050185
LMH6321TS	VIP III	0	15575	0	0	1212500	3	344050185
LMH6321TSX	VIP III	0	15575	0	0	1212500	3	344050185

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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