ISL78214

2

FN7551.3

May 12, 2015

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Pin Configuration

ISL78214

(16 LD QFN)

TOP VIEW

Ordering Information

PART NUMBER

(Notes 1, 2, 3)

PART

MARKING

TEMP. RANGE

(°C)

PACKAGE

(RoHS Compliant)

PKG.

DWG. #

ISL78214ARZ

782 14ARZ

-40 to +105

16 Ld 4x4 QFN

L16.4x4

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 ISL78214. For more information on MSL please see techbrief TB363.

1

3

4

15

VIN

VIN

VDD

SYNCH

16

14

13

2

12

10

9

11

6

57

8

PGND

PGND

SGND

SGND

Refer to Application Note AN1366 for more layout suggestions.

PD

Pin Descriptions

PIN NUMBER

PIN NAME

DESCRIPTION

1, 2

VIN

Input supply voltage. Connect a 10µF ceramic capacitor to power ground.

3

VDD

Input supply voltage for the analog circuitry. Connect to VIN pin.

5

EN

Regulator enable pin. Enable the output when driven to high. Shut down the chip and discharge output

capacitor when driven to low. Do not leave this pin floating.

7

PG

1ms timer output. At power-up or EN HI, this output is a 1ms delayed power-good signal for the output

voltage.

4

SYNCH

Mode Selection pin. Connect to logic high or input voltage VDD for PWM mode. Connect to logic low or

ground for PFM mode. Connect to an external function generator for synchronization with the negative

edge trigger. Do not leave this pin floating.

14, 15

LX

Switching node connection. Connect to one terminal of the inductor.

11, 12

PGND

Power ground

9, 10

SGND

Signal ground

8

VFB

Buck regulator output feedback. Connect to the output through a resistor divider for adjustable output

voltage. For 0.8V output voltage, connect this pin to the output.

6, 13, 16

NC

No connect

PD

Exposed Pad

The exposed pad must be connected to the SGND pin for proper electrical performance. Place as much

vias as possible under the pad connecting to SGND plane for optimal thermal performance.