參數(shù)資料
型號： IRS2541STRPbF
廠商： International Rectifier
英文描述： LED BUCK REGULATOR CONTROL IC
中文描述： 發(fā)光二極管降壓穩(wěn)壓器控制IC
文件頁數(shù)： 3/14頁
文件大?。?/td> 456K
代理商： IRS2541STRPBF
IRS254(0,1)(S)PbF
Absolute Maximum Ratings
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.
www.irf.com Page 3
Symbol
Definition
Min.
-0.3
Max.
225
Units
IRS2540
V
B
High-side floating supply voltage
IRS2541
-0.3
625
V
S
High-side floating supply offset voltage
V
B
– 25
V
B
+ 0.3
V
HO
High-side floating output voltage
V
S
– 0.3
V
B
+ 0.3
V
LO
Low-side output voltage
-0.3
V
CC
+ 0.3
V
IFB
Feedback voltage
-0.3
V
CC
+ 0.3
V
ENN
Enable voltage
-0.3
V
CC
+ 0.3
V
I
CC
Supply current (Note 1)
-20
20
mA
dV/dt
Allowable offset voltage slew rate
-50
50
V/ns
(8-Pin DIP)
---
1
P
D
Package power dissipation @ T
A
≤
+25 oC
P
D
= (T
JMAX
-T
A
)/R
THJA
(8-Pin SOIC)
---
0.625
W
(8-Pin DIP)
---
125
R
THJA
Thermal resistance, junction to ambient
(8-Pin SOIC)
---
200
oC/W
T
J
Junction temperature
-55
150
T
S
Storage temperature
-55
150
T
L
Lead temperature (soldering, 10 seconds)
---
300
oC
Note 1: This IC contains a zener clamp structure between the chip V
CC
and COM, with a nominal breakdown voltage of
15.6 V. Please note that this supply pin should not be driven by a low impedance DC power source greater than V
CLAMP
specified in the electrical characteristics section.
Recommended Operating Conditions
For proper operation the device should be used within recommended conditions.
Symbol
V
BS
Definition
Min.
V
CC
– 0.7
Max.
V
CLAMP
Units
High side floating supply voltage
Steady state high-side floating supply offset voltage
Supply voltage
IRS2540
-1
200
V
S
IRS2541
-1
600
V
CC
V
CCUV+
V
CLAMP
V
I
CC
Supply current
Note 2
10
mA
T
J
Junction temperature
-25
125
oC
Note 2: Sufficient current should be supplied to V
CC
to keep the internal 15.6 V zener regulating at V
CLAMP
.
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