cat4240 Catalyst Semiconductor, cat4240 Datasheet - Page 2

• Manufacturer Part Number: cat4240
• Description: 6 Watt Boost Led Driver
• Manufacturer: Catalyst Semiconductor

CAT4240
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Typical application circuit with external components are shown on page 1.
DC ELECTRICAL CHARACTERISTICS
V
Note:
(1) Thin SOT23-5 package thermal resistance θ
Doc. No. MD-5026 Rev. C
Parameters
V
¯¯¯¯¯ voltage
SHDN
SW voltage
Storage Temperature Range
Junction Temperature Range
Lead Temperature
Parameters
V
SW pin voltage
Ambient Temperature Range
IN
Symbol
V
IN
IN
V
= 3.6V, ambient temperature of 25ºC (over recommended operating conditions unless specified otherwise).
V
I
R
F
V
I
OV-SW
, FB voltage
DC
I
LEAK
V
I
I
V
UVLO
LED
I
LIM
SD
OCL
FB
SW
Q
SW
FB
IH
IL
Operating Current
SHDN
SHDN
¯¯¯¯¯ Logic High
¯¯¯¯¯ Logic Low
Shutdown Current
FB Pin Voltage
FB pin input leakage
Programmed LED Current
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch “On” Resistance
Switch Leakage Current
Thermal Shutdown
Thermal Hysteresis
Undervoltage Lockout (UVLO)
Threshold
Overvoltage Detection Threshold
Output Voltage Clamp
Parameter
(1)
-65 to +160
-40 to +150
-40 to +85
JA
-0.3 to +7
-0.3 to +7
-0.3 to 60
up to 5.5
Ratings
0 to 38
Range
= 135°C/W when mounted on board over a ground plane.
300
V
V
V
6 LEDs with I
R1 = 10Ω
R1 = 5Ω
Enable Threshold Level
Shutdown Threshold Level
V
V
V
I
Switch Off, V
“Open LED”
SW
FB
FB
¯¯¯¯¯
SHDN
IN
IN
IN
= 3V
= 3.6V
= 5V
= 100mA
= 0.2V
= 0.4V (not switching)
Test Conditions
Units
Units
= 0V
ºC
ºC
ºC
ºC
V
V
V
V
V
2
SW
LED
= 30V
= 75mA
28.5
Min
285
600
750
0.4
0.8
Characteristics subject to change without notice
Typ
300
150
0.6
0.1
0.1
0.8
0.7
1.0
1.0
1.9
30
60
92
20
40
42
2
© Catalyst Semiconductor, Inc.
Max
31.5
315
1.5
0.6
1.5
1.3
2.0
1
1
5
Units
MHz
mA
mV
mA
mA
µA
µA
µA
ºC
ºC
%
Ω
V
V
V
V
V