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EL7630
Absolute Maximum Ratings (T A = 25°C)
Input Voltage (V IN ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
LX Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +27V
FB Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
ENAB Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C
PGND to GND (SC-70 package) . . . . . . . . . . . . . . . . -0.3V to +0.3V
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: T J = T C = T A
Electrical Specifications
V IN = 3V, V ENAB = 3V, over temperature from -40°C to 85°C unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
V IN-MIN
V IN-MAX
Minimum Operating Voltage
Maximum Operating Voltage
V OUT = 16V, I LED = 20mA
V OUT = 25V, I LED = 20mA
2.7
5.5
V
V
V FB
Feedback Voltage
T A = 25°C
86
95
104
mV
80
95
115
mV
I FB
FB Pin Bias Current
100
nA
I IN
Supply Current
ENAB = 3V, output not switching
0.6
1.0
mA
ENAB = 0V
1
μA
F OSC
Switching Frequency
T A = 25°C
0.8
1.35
1.8
MHz
0.8
1.35
1.9
MHz
D MAX
Maximum Duty Cycle
T A = 25°C
85
90
%
82
90
%
I LIM
Switch Current Limit
T A = 25°C
280
350
mA
250
350
mA
r DS(ON)
Switch On Resistance
I LX = 100mA
750
m ?
I LEAK
Switch Leakage Current
V LX = 27V
0.01
1
μA
V ENAB-HI
V ENAB-LO
I ENAB
ENAB Voltage High
ENAB Voltage Low
ENAB Pin Bias Current
2.5
0.6
1
V
V
μA
? I LED / ? V IN
Line Regulation
V IN = 2.7V to 5V
0.2
%/V
2
FN7371.1
February 22, 2006
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