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180mA, 1x/2x, White LED Charge Pump
in 3mm x 3mm TDFN
ABSOLUTE MAXIMUM RATINGS
IN, OUT, EN to GND..............................................-0.3V to +6.0V
SET, LED1, LED2, LED3, CN to GND .........-0.3V to (VIN + 0.3V)
CP to GND ......................................................................-0.3V to
the greater of (VOUT + 1V) or (VIN + 1V)
OUT Short Circuit to GND ..........................................Continuous
Continuous Power Dissipation (TA = +70°C)
10-Pin TDFN (derate 18.2mW/°C above +70°C) .......1454mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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 = 0V, EN = IN, R SET = 13.7k ? , T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
(Note 1)
PARAMETER
IN Operating Voltage
Undervoltage-Lockout Threshold
V IN falling
CONDITIONS
MIN
2.7
2.25
TYP
2.45
MAX
5.5
2.60
UNITS
V
V
Undervoltage-Lockout Hysteresis
40
mV
Output Overvoltage-Protection Threshold
No-Load Supply Current
V OUT rising
2x mode
10% setting, 1x mode
5
2
0.35
V
mA
Shutdown Supply Current
Soft-Start Time
SET Bias Voltage
SET Leakage in Shutdown
EN = GND, T A = +25°C
EN = GND, T A = +85°C
EN = GND, T A = +25°C
EN = GND, T A = +85°C
0.01
0.1
2
0.6
0.01
0.1
1
1
μA
ms
V
μA
SET Current Range
SET-to-LED_ Current Ratio (I LED /I SET )
LED Current Accuracy
100% setting
T A = +25°C
4
393
±0.7
153
μA
A/A
%
LED-to-LED Current Matching
Maximum LED_ Sink Current
LED_ Dropout Voltage
1x to 2x Mode Transition Threshold
(Note 2)
R SET = 4.12k ?
R SET = 4.12k ? (Note 3)
V LED_ falling
-4
52
120
±0.5
60
80
130
+4
120
140
%
mA
mV
mV
Input-Voltage-Mode Transition Hysteresis
150
mV
LED Leakage in Shutdown
Maximum OUT Current
Open-Loop OUT Resistance
Switching Frequency
EN = GND, T A = +25°C
EN = GND, T A = +85°C
V IN ≥ 3.12V, V OUT = 3.9V
1x mode, (V IN - V OUT ) / I OUT
2x mode, (2 x V IN - V OUT ) / I OUT
180
0.01
0.1
1.5
9
1
2
2.5
15
μA
mA
?
MHz
OUT Pulldown Resistance in Shutdown
EN High Voltage
EN Low Voltage
EN = GND
V IN = 2.7V to 5.5V
V IN = 2.7V to 5.5V
1.6
5
0.4
k ?
V
V
2
_______________________________________________________________________________________
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