FN6555 Rev 2.00

Page 1 of 9

July 15, 2014

FN6555

Rev 2.00

July 15, 2014

ISL6719

100V Linear Bias Supply

DATASHEET

The ISL6719 is a low cost linear regulator for generating a low

voltage bias supply from intermediate distributed voltages

commonly used in telecom and datacom applications. It

provides a single adjustable output rated at 100mA from

either the input source or an auxiliary source such as a

transformer winding. The auxiliary source is selected whenever

it has sufficient voltage to sustain the output.

The ISL6719 may be used as a start-up or a continuous low

power regulator. When operating as a start-up regulator, it is

capable of sourcing 100mA from a 100V source for short

durations. This period of time allows the power supply to

start-up and provide an alternate power source, such as the

output of a transformer winding, to the AUXIN input. This

allows the regulated output to operate from a lower source

voltage to minimize power loss.

Features

• 100V+ input capability

• Adjustable output from 1.5V to 20V

•Up to 100mA output current

• Overcurrent protection

• Over-temperature protection

• ENABLE and ENABLE_N inputs

• Package compliant with IPC2221A, creepage and clearance

spacing requirements

Applications

• Telecom/datacom DC/DC converters

• Low power bias supplies

Pin Configuration

ISL6719

(9 LD DFN)

TOP VIEW

2

3

1

4

8

7

6

9

5

VPWR

AUXIN

VSW

VSW_FB

GND

ENABLE_N

ENABLE

COMPB

COMPA

Ordering Information

PART NUMBER

(Note 1, 2, 3)

PART MARKING

TEMP RANGE

(°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

ISL6719ARZ

19AZ

-40 to +105

9 Ld DFN

L9.3x3

NOTES:

1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte

tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil

Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), please see device information page for ISL6719. For more information on MSL, please see tech brief TB363.