TM
MP1518 – FIXED FREQUENCY WHITE LED DRIVER
ELECTRICAL CHARACTERISTICS
VIN = VEN = 5V, TA = +25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ Max Units
Operating Input Voltage
Supply Current (Shutdown)
Supply Current (Quiescent)
Switching Frequency
Maximum Duty Cycle
Under Voltage Lockout
IN Under Voltage Lockout
VIN
2.5
6
1
V
µA
µA
MHz
%
VEN = 0V
0.1
690
1.3
92
VFB = 0.15V
750
1.5
fSW
1.0
85
VFB = 0V
UVLO
VIN Rising
2.25 2.45
92
V
Under Voltage Lockout
Hysteresis
mV
Open Lamp Shutdown
Threshold
VOV
VOV Rising
28
V
Enable
EN Threshold
VEN Rising
1.0
0.8
1.35
90
1.6
V
V
EN Threshold
VEN Rising, VIN = 2.5V
EN Hysteresis
mV
µA
EN Input Bias Current
Feedback
VEN = 0V, 5V
VFB = 0.1V
1
FB Voltage
94
104
114
mV
nA
FB Input Bias Current
Output Switch
SW On-Resistance (5)
SW Current Limit (5)
Thermal Shutdown (5)
-600 -300
RON
0.5
350
160
Ω
Duty Cycle = 60%
mA
°C
Notes:
5) Guaranteed by design.
MP1518 Rev. 1.61
4/18/2012
www.MonolithicPower.com
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