ISL62881C, ISL62881D

2

FN7596.0

March 8, 2010

Ordering Information

PART NUMBER

(Notes 1, 2, 3)

PART MARKING

TEMP. RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL62881CHRTZ

62881C HRTZ

-10 to +100

28 Ld 4x4 TQFN

L28.4x4

ISL62881CIRTZ

62881C IRTZ

-40 to +100

28 Ld 4x4 TQFN

L28.4x4

ISL62881DHRTZ

62881D HRTZ

-10 to +100

32 Ld 5x5 TQFN

L32.5x5E

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 ISL62881C, ISL62881D. For more information on

Pin Configurations

ISL62881C

(28 LD TQFN)

TOP VIEW

ISL62881D

(32 LD TQFN)

TOP VIEW

1

28

2

3

4

5

6

7

21

20

19

18

17

16

15

27 26 25 24 23 22

8

9 10 11 12 13 14

GND PAD

(BOTTOM)

VID0

VCCP

LGATE

PHASE

UGATE

COMP

FB

VW

PGOOD

RBIAS

CLK_EN#

VSSP

VSEN

VID1

1

32

2

3

4

5

6

7

24

23

22

21

20

19

18

31 30 29 28 27 26

910 11 12 13 14 15

GND PAD

(BOTTOM)

VID0

VCCP

LGATEa

PHASE

GND

VW

NTC

RBIAS

VR_TT#

VSSP

VID1

8

COMP

FB

PGOOD

16

17 UGATE

LGATEb

25

Pin Function Description

ISL62881C ISL62881D

SYMBOL

DESCRIPTION

1

32

CLK_EN#

Open drain output to enable system PLL clock. It goes low 13 switching cycles after

2

1

PGOOD

Power-Good open-drain output indicating when the regulator is able to supply

regulated voltage. Pull up externally with a 680Ω resistor to VCCP or 1.9kΩ to 3.3V.

3

2

RBIAS

A resistor to GND sets internal current reference. A 147kΩ resistor sets the controller

for CPU core application and a 47kΩ resistor sets the controller for GPU core

application.

-

3

VR_TT#

Thermal overload output indicator.

-

4

NTC

Thermistor input to VR_TT# circuit.

-

5

GND

Signal common of the IC. Unless otherwise stated, signals are referenced to the GND

pin.

ISL62881C, ISL62881D