irs2540 International Rectifier Corp., irs2540 Datasheet - Page 3

• Manufacturer Part Number: irs2540
• Description: Led Buck Regulator Control Ic -
• Manufacturer: International Rectifier Corp.

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Absolute Maximum Ratings
Note 2: Sufficient current should be supplied to V
Recommended Operating Conditions
For proper operation the device should be used within recommended conditions.
Symbol
Symbol
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage
parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal
resistance and power dissipation ratings are measured under board mounted and still air conditions.
Note 1: This IC contains a zener clamp structure between the chip V
15.6 V. Please note that this supply pin should not be driven by a low impedance DC power source greater than V
specified in the electrical characteristics section.
dV/dt
R
V
V
V
V
V
V
I
P
V
V
T
T
I
THJA
T
V
T
ENN
CC
CC
HO
IFB
LO
CC
BS
D
S
B
S
J
L
S
J
High side floating supply voltage
Steady state high-side floating supply offset voltage
Supply voltage
Supply current
Junction temperature
High-side floating supply voltage
High-side floating supply offset voltage
High-side floating output voltage
Low-side output voltage
Feedback voltage
Enable voltage
Supply current (Note 1)
Allowable offset voltage slew rate
Package power dissipation @ T
P
Thermal resistance, junction to ambient
Junction temperature
Storage temperature
Lead temperature (soldering, 10 seconds)
D
= (T
JMAX
-T
A
)/R
THJA
Definition
Definition
CC
A
to keep the internal 15.6 V zener regulating at V
d +25 ºC
(8-Pin DIP)
(8-Pin SOIC)
(8-Pin DIP)
(8-Pin SOIC)
CC
IRS2540
IRS2541
IRS2540
IRS2541
and COM, with a nominal breakdown voltage of
V
V
V
Note 2
V
CC
Min.
Min.
S
B
-0.3
-0.3
-0.3
-0.3
-0.3
-20
-50
-55
-55
CCUV+
-25
– 0.3
---
---
---
---
---
-1
-1
– 25
– 0.7
CLAMP
IRS254(0,1)(S)PbF
.
V
V
V
V
V
V
V
CC
CC
CC
Max.
Max.
0.625
B
B
200
600
125
225
625
125
200
150
150
300
CLAMP
CLAMP
10
20
50
+ 0.3
+ 0.3
1
+ 0.3
+ 0.3
+ 0.3
Units
Units
ºC/W
V/ns
mA
mA
CLAMP
ºC
ºC
W
V
V
Page 3