White LED Step-Up Regulator
EC4513
Preliminary
PAGE
2 / 7
DR18EV9005-VER1.0
Absolute Maximum Ratings (TA = 25°C)
COMP, CNTL, IS to SGND. . . . . . . .. . . . . .. . . . . -0.3V to +6V
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
VOUT, VIN to SGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . +19.5V
Lead Temperature . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 300°C
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+20V
Operating Temperature . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
SGND to PGND . . . . . . . . . . . . . . . . . . . . . . . . -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: TJ = TC = TA
Electrical Specifications
VIN = 3V, VO = 12V, C1 = 4.7µF, C2 = 1µF, C3 = 0.1µF, R1 = 5
&, TA = 25°C, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input Voltage
2.6
13.2
V
IQ1
Shut-down Supply Current
VCNTL = 0V, Vin=3V
1
uA
ICOMP
COMP Pin Pull-up Current
COMP connected to SGND
10
uA
VCOMP
COMP Voltage Swing
0.5
2.5
3.5
V
ICNTL
CNTL shut-down Current
CNTL = 0V
1
uA
VCNTL1
Chip Enable Voltage
270
mV
Chip Disable Voltage
200
mV
IOUT_ACCURACY
VCNTL =1V
VCNTL =1V
14
15
16
mA
VOUT1
Over-voltage Threshold
VOUT rising
17
V
VOUT2
Over-voltage Threshold
VOUT falling
15
V
ILX
MOSFET Current Limit
500
mA
RDS_ON
MOSFET On-resistance
0.7
Ω
ILEAK
MOSFET leakage Current
VCNTL = 0V , VLX = 12V
1
uA
FS
Switching Frequency
800
1000
1200
KHz
DMAX
Maximum Duty Ratio
VCNTL = 2V , IS = 0
85
％
ICS
CS Input Bias Current
1
uA
△IO/△VIN
Line Requlation
VIN = 2.6V - 5.5V
0.05
%/V
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