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High-Efficiency, White LED Step-Up Converter
with I 2 C Interface in 2mm x 2mm WLP
ABSOLUTE MAXIMUM RATINGS
IN to GND ..............................................................-0.3V to +6.0V
V DD , COMP to GND.....................................-0.3V to (V IN + 0.3V)
SDA, SCL to GND.......................................-0.3V to (V DD + 0.3V)
OUT, LX, LED1–LED5 to GND................................-0.3V to +30V
I LX (Note 1) .....................................................................1.2A RMS
PGND to GND .......................................................-0.3V to +0.3V
Continuous Power Dissipation (T A = +70°C)
16-Bump, 2mm x 2mm WLP
(derate 8.2mW/°C above +70°C ambient) ...................660mW
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Bump Temperature (soldering, reflow) ............................+260°C
Operating Temperature Range ...........................-40°C to +85°C
Note 1: LX has an internal clamp diode to PGND. Applications that forward bias this diode should take care not to exceed the power
dissipation limits of the device.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V IN = 3.6V, V GND = V PGND = 0V, V DD = 1.8V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN Supply Voltage
V DD Supply Voltage
IN Undervoltage Lockout
Threshold
IN Quiescent Current
No load, 2MHz switching
2.7
1.6
2.4
1.5
5.5
5.5
2.6
V
V
V
mA
IN Shutdown Current
V DD Standby Current
IN Standby Current
OUT Leakage Current
V DD = GND
V SDA = V SCL = V DD
V SDA = V SCL = V DD
V IN = V OUT = 5.5V, V DD = GND
T A = +25°C
T A = +85°C
T A = +25°C
T A = +85°C
T A = +25°C
T A = +85°C
T A = +25°C
T A = +85°C
0.1
0.1
0.1
0.1
2
2
0.01
0.1
1
1
5
1
μA
μA
μA
μA
LED_ CURRENT REGULATORS
LED_ Current Regulator Dropout
Voltage (Note 2)
I LED1 or I LED2 = 25mA setting
I LED3 or I LED4 or I LED5 = 5.0mA setting
200
150
mV
mV
LED_ Current Accuracy
LED_ Leakage Current
I LED1 or I LED2 = 25.25mA
setting
I LED3 or I LED4 or I LED5 = 5.0mA
setting
V LED_ = 5.5V, V DD = GND
T A = +25°C
T A = -40°C to +85°C
T A = +25°C
T A = -40°C to +85°C
T A = +25°C
T A = +85°C
-2
-5
-2
-5
0.01
0.1
+2
+5
+2
+5
1
%
%
μA
LED_ Regulation Voltage
N-CHANNEL SWITCH
0.35
V
LX Current Limit
LX On-Resistance
I LX = 200mA
780
860
0.3
mA
Ω
2
_______________________________________________________________________________________
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