time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev.0B, 01/05/2018
4
IS32LT3125/3125A
ABSOLUTE MAXIMUM RATINGS
VCC, OUT, EN, UV
ISET, FAULTB, CSTOR
Ambient operating temperature, T
A
=T
J
Maximum continuous junction temperature, T
J(MAX)
Storage temperature range, T
STG
Maximum power dissipation, P
DMAX
ESD (HBM)
ESD (CDM)
-0.3V ~ +45V
-0.3V ~ +7.0V
-40°C ~ +125°C
+150°C
-55°C ~ +150°C
1.96W
±2kV
±750V
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.
THERMAL CHARACTERISTICS
Characteristic
Package Thermal Resistance
(Junction to Ambient), R
θJA
Package Thermal Resistance
(Junction to Pad), R
θJP
Test Conditions
On 4-layer PCB based on JEDEC standard at
1W, T
A
=25°C
Value
50.98°C/W
2.24°C/W
ELECTRICAL CHARACTERISTICS
T
J
= -40°C ~ +125°C, V
CC
=12V, the detail refer to each condition description. Typical values are at T
J
= 25°C.
Symbol
Parameter
Conditions
Min. Typ. Max.
Unit
Power Up Parameter
V
CC
V
UVLO
V
UVLO_HY
I
CC
I
SD
Supply voltage range
VCC under voltage lockout
threshold voltage
VCC under voltage lockout
voltage hysteresis
VCC supply current
Quiescent supply current
R
ISET
=20kΩ, V
EN
=high, No Fault
condition.
In shutdown mode (OUT turned off),
V
EN
= low
20
5
4.3
4.5
0.2
2
1
30
1
1
48
I
OUT
= -150mA, V
CC
= 12V, V
EN
= High
40
5.5
2
40
2
2
ms
μs
mA
42
4.7
V
V
V
mA
mA
I
SD_FLT
R
ISET
=20kΩ, V
EN
=high. IS32LT3125
OUT connected to
Supply current during LED string GND (in fault master
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