
ISL97634
Pin Configuration
ISL97634
(8 LD TDFN)
TOP VIEW
GND 1
VIN 2
THERMAL
8 LX
7 VOUT
Pin Descriptions
PWM/EN 3
NC 4
PAD
6 FBSW
5 FB
PIN NUMBER
1
2
3
4
5
6
7
8
PIN NAME
GND
VIN
PWM/EN
NC
FB
FBSW
VOUT
LX
PAD
DESCRIPTION
Ground Pin. Connect to local ground.
Input Supply Pin. Connect to the input supply voltage, the inductor and the input supply decoupling capacitor.
PWM or Enable Pin. Connect external PWM signal allows pulse width modulation current operation. Enable
signal allows peak current operation or disable signal shuts down the device.
No Connect
Feedback Pin. Connect the sense resistor between FB and ground. The cathode of bottom LED can also be
connected at this pin if the output current is not to be PWMed.
FB Disconnect Switch. Connect to the cathode of the bottom LED if the output current to be PWMed.
Output Pin. Connect to the anode of the top LED and the output filter capacitor.
Switching Pin. Connect to inductor.
Connect to ground plane on the PCB to maximize thermal performance.
Ordering Information
PACKAGE
PART NUMBER
(Notes 1, 2, 3)
ISL97634IRT14Z-T
ISL97634IRT14Z-TK
ISL97634IRT18Z-T
ISL97634IRT18Z-TK
ISL97634IRT26Z-T
ISL97634IRT26Z-TK
PART
MARKING
ELE
ELE
ELF
ELF
ELG
ELG
OVP OPTIONS
(V)
14
14
18
18
26
26
TEMP RANGE
(°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
Tape and Reel
(Pb-free)
8 Ld 2x3 TDFN
8 Ld 2x3 TDFN
8 Ld 2x3 TDFN
8 Ld 2x3 TDFN
8 Ld 2x3 TDFN
8 Ld 2x3 TDFN
PKG.
DWG. #
L8.2x3A
L8.2x3A
L8.2x3A
L8.2x3A
L8.2x3A
L8.2x3A
NOTES:
1. 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 ISL97634 . For more information on MSL please see tech brief TB363 .
3
FN6264.4
August 27, 2013