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480mA White LED 1x/1.5x/2x Charge Pump for
Backlighting and Camera Flash
ABSOLUTE MAXIMUM RATINGS
INP, IN, OUT, ENM1, ENM2, ENF1,
ENF2 to GND1 .......................................................-0.3V to +6.0V
SETF, SETM, LED1, LED2, LED3, LED4, LED5,
LED6, LED7, LED8 to GND1 ....................-0.3V to (V IN + 0.3V)
C1N, C2N to GND1 ........................................-0.3V to (V IN + 1V)
C1P, C2P to
GND1 ................ -0.3V to Greater of (V OUT + 1V) or (V IN + 1V)
GND2, PGND to GND1 .........................................-0.3V to +0.3V
OUT Short Circuit to GND ..........................................Continuous
Continuous Power Dissipation (T A = +70 ° C)
24-Pin Thin QFN (derate 20.8mW/ ° C
above +70 ° C)..............................................................1666mW
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 GND1 = V GND2 = V PGND = 0V, ENM1 = ENM2 = ENF1 = ENF2 = IN, R SETM = R SETF = 6.8k Ω , 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 rising or falling
CONDITIONS
MIN
2.7
2.25
TYP
2.45
MAX
5.5
2.60
UNITS
V
V
Undervoltage-Lockout Hysteresis
50
mV
Overvoltage Protection Threshold
V OUT rising
5
V
Supply Current
Shutdown Supply Current
Soft-Start Time
SET_ Bias Voltage
SET_ Leakage in Shutdown
1MHz switching, no load, 1.5x or 2x mode
1x mode 10% setting, LED5–LED8 off
ENM1 = ENM2 = ENF1 = ENF2 = GND
ENM1 = ENM2 = ENF1 = ENF2 = GND, V SET_ = 0V or V IN
3.8
0.3
0.1
2
0.604
0.01
6.0
3
1
mA
μA
ms
V
μA
SETM Current Range
SETF Current Range
SETM to Main LED_ Current Ratio
(I LED / I SETM )
SETF to Flash LED_ Current Ratio
(I LED / I SETF )
100% setting, LED1–4
100% setting, LED5–8
40
40
233
708
130
145
μA
μA
A/A
A/A
LED_ Current Accuracy
LED1–4
LED5–8
-6
-8
+6
+8
%
LED_ to LED_ Current Matching
Maximum LED_ Sink Current
LED_ Dropout Voltage
(Note 2)
LED1–LED4, R SETM = 4.64k Ω
LED5–LED8, R SETF = 4.12k Ω
(Note 3)
-3.5
27
90
±0.7
30
100
40
+3.5
90
%
mA
mV
LED_ 1.5x and 2x Regulation
Voltage
150
mV
LED_ 1x to 1.5x or 1.5x to 2x
Mode Transition Threshold
Input-Voltage-Mode Transition
Hysteresis
90
100
150
110
mV
mV
2
_______________________________________________________________________________________
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