Texas Instruments LMH6321 Bedienungsanleitung

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LMH6321 300 mA High Speed Buffer with Adjustable Current Limit

1 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 5 V to ±15 V

•Wide temperature range −40°C to +125°C

•Adjustable current limit

•High capacitive load drive

•Thermal shutdown error flag

2 Applications

•Line driver

•Pin driver

•Sonar driver

•Motor control

3 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 50 Ω 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.

Table 3-1. Device Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

LMH6231

SO PowerPAD (8)1.7 mm × 1.27 mm

DDPAK (7)4.65 mm × 1.27 mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

V

+

1

2

3

4

5

6

7

8

EF

CL

V

IN

V

-

V

OUT

GND

NC

G = 1

Figure 3-1. Connection Diagram: 8-Pin SO

PowerPAD

G = 1

1

23

45

67

V

IN

GND

V

OUT

V

+

V

-

EF

CL

A.V

−

pin is connected to tab on back of each package.

Figure 3-2. Connection Diagram: 7-Pin DDPAK

(A)

LMH6321

SNOSAL8D – APRIL 2006 – REVISED SEPTEMBER 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen