ISL88731C

FN6978 Rev 3.00

Page 4 of 26

June 8, 2011

21

VDDP

Linear Regulator Output. VDDP is the output of the 5.2V linear regulator supplied from DCIN. VDDP also directly

supplies the LGATE driver and the BOOT strap diode. Bypass with a 1µF ceramic capacitor from VDDP to PGND. Range

is 5.0V to 5.23V.

22

DCIN

Charger Bias Supply Input. Bypass DCIN with a 0.1µF capacitor to GND. Range 8V to +26V.

23

PHASE

High-Side Power MOSFET Driver Source Connection. Connect to the source of the high-side N-Channel MOSFET. Range

-2V to +26V.

24

UGATE

High-Side Power MOSFET Driver Output. Connect to the high-side N-channel MOSFET gate. Range -2V to +33V.

25

BOOT

High-Side Power MOSFET Driver Power-Supply Connection. Connect a 0.1µF capacitor from BOOT-to-PHASE. Range

-2V to +33V.

26

VCC

Power input for internal analog circuits. Connect a 4.7

 resistor from VCC to VDDP and a 1µF ceramic capacitor from VCC

to ground. Range 4V to 5.23V.

27

CSSN

Input Current-Sense Negative Input. Range 8V to 26V.

28

CSSP

Input Current-Sense Positive Input. Range 8V to 26V.

PD

Connect the backside paddle to GND. This pad has the lowest thermal resistance to the die. It should be connected to

a large area of ground with 3 to 5 vias for good thermal performance. The recommended potential of the thermal pad

is zero (0) Volts.

1, 5, 7, 14, 16

NC

No Connect. Pins are not connected internally.

Ordering Information

PART NUMBER

(Notes 1, 2, 3)

PART

MARKING

TEMP RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL88731CHRTZ

88731C HRTZ

-10 to +100

28 Ld 5x5 TQFN

L28.5x5B

ISL88731CEVAL2Z

Evaluation Board

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.

PIN NUMBER

SYMBOL

DESCRIPTION