ISL78310

FN7810 Rev 2.00

Page 2 of 14

November 7, 2014

Pin Descriptions

PIN #

PIN NAME

DESCRIPTION

1, 2

VOUT

Regulated output voltage. A minimum 10µF X5R/X7R output capacitor is required for stability. See “External

Capacitor Requirements” on page 9 for more details.

3

SENSE/ADJ

For internally fixed VOUT option, this pin provides output voltage feedback. By connecting this pin to the output rail

at the load, small voltage drops caused by PCB trace resistance can be eliminated.

For the adjustable output voltage option, this pin is connected to the feedback resistor divider and provides voltage

feedback signals for the LDO to set the output voltage.

4

PG

This is an open drain logic output used to indicate the status of the output voltage. Logic low indicates VOUT is not

in regulation. Must be grounded if not used.

5GND

Ground.

6

SS

External capacitor on this pin adjusts start-up ramp and controls in-rush current.

7

ENABLE

VIN independent chip enable. TTL and CMOS compatible.

8

NC

Do not connect this pin to ground or supply. Leave floating.

9, 10

VIN

Input supply pin. A minimum 10µF X5R/X7R input capacitor is required for stability. See “External Capacitor

Requirements” on page 9 for more details.

EPAD

EPAD at ground potential. Soldering it directly to GND plane is required for thermal considerations. See “Heatsinking

the DFN Package” on page 12 for more details.

Ordering Information

PART NUMBER

(Notes 1, 3, 4)

PART

MARKING

(Note 2)

TEMP

RANGE (°C)

PACKAGE

(Pb-Free)

PKG

DWG. #

ISL78310ARAJZ

DZAE

ADJ

-40 to +125

10 Ld 3x3 DFN

L10.3x3

NOTES:

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

2. For other output voltages, contact Intersil Marketing.

3. 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.

4. For Moisture Sensitivity Level (MSL), please see device information page for ISL78310. For more information on MSL please see techbrief TB363.