IS31BL3508A
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 05/10/2013
6
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
CC
-0.3V ~ +6.0V
LX pin voltage -0.3V ~ +40V
Voltage at any input pin -0.3V ~ +6.0V
Maximum junction temperature, T
JMAX
150°C
Storage temperature range, T
STG
-65°C ~ +150°C
Operating temperature range, T
A
-40°C ~ +85°C
Note:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only
and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
Test conditions：T
A
= 25°C, V
CC
= 3.6V, unless otherwise noted.
Symbol Parameter Condition Min Typ Max Unit
V
CC
Supply voltage 2.7 5.5 V
I
CC
Quiescent current Switching 1.1 1.3 mA
I
SD
Shutdown current V
EN
= 0V 2 2.5 μA
V
EN_ON
EN input logic high V
EN
rising 1.4 V
V
EN_OFF
EN input logic low V
EN
falling 0.4 V
f
OSC
Operating frequency 1 MHz
D
MAX
Maximum duty cycle 91.5 92.7 95.5 %
R
DS_ON
LX switch on resistance 0.7 Ω
I
SW_LK
LS switch leakage current V
SW
= 38V 1 μA
I
SW_LIMIT
Switch over current limit Duty = 90% 1.2 1.6 1.8 A
V
OVP
OUT over voltage protection 36 38 40 V
V
FB
Feedback voltage
285 300 315 mV
T
ST
Over temperature protection
(Note 1)
160 °C
Note 1: Guaranteed by design.
