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Charge Pump for Backlight/Flash/RGB LEDs
with Safety Timer
ABSOLUTE MAXIMUM RATINGS
V DD , IN, PIN, SCK, SDA, FSH , OUT to GND .........-0.3V to +6.0V
M_, S_, F_ to GND ....................................-0.3V to (V OUT + 0.3V)
C1N, C2N to GND .......................................-0.3V to (V IN + 0.3V)
C1P, C2P to GND...-0.3V to greater of (V OUT + 0.3V) or (V IN + 0.3V)
PGND to GND .......................................................-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 = V PIN = 3.6V, V DD = 1.8V, V GND = V PGND = 0V, temperature derating disabled, T A = -40°C to +85°C, typical values are at T A =
+25°C, unless otherwise noted.) (Note 1)
PARAMETER
IN Operating Voltage
V DD Operating Range
Undervoltage-Lockout Threshold
CONDITIONS
V IN rising or falling
MIN
2.7
1.6
2.25
TYP
MAX
5.5
5.5
2.60
UNIT
V
V
V
Undervoltage-Lockout Hysteresis
50
mV
Output Overvoltage-Protection Threshold
IN + PIN No-Load Supply Current
V OUT rising
1.5x or 2x mode
10% setting, 1x mode, flash off
4.75
5.00
4.0
0.35
5.25
6.5
V
mA
IN + PIN Shutdown Supply Current
V DD Quiescent Current
All LEDs off, FSH = SDA =
SCK = V DD , I 2 C ready
All LEDs off, SDA = SCK =
V DD , I 2 C ready
T A = +25°C
T A = +85°C
T A = +25°C
T A = +85°C
0.7
0.8
0.1
0.1
5
1
μA
μA
Startup into 1x mode
0.5
Soft-Start Time
LED Current Derating Function Start
Temperature
LED Current Derating Function Slope
Startup into 1.5x mode
Startup into 2x mode
Temperature derating enabled
T A = +40°C to +85°C, temperature derating
enabled
1.0
1.5
+40
-1.7
ms
°C
%/°C
LED Current SUB Output Accuracy
(Note 2)
LED Current FLASH and MAIN Output
Accuracy
Maximum M_, S_, F_ Sink Current
Default current setting, T A = +25°C
Default current setting, T A = -40°C to +85°C
Default current setting (Note 2)
M_, S_
F_
-2
-5
-5
28.5
95
±0.3
±0.3
30.0
100
+2
+5
+5
%
%
mA
LED Dropout Voltage
100% LED setting (Note 3)
M_, S_
F_
40
40
90
90
mV
1.5x and 2x Mode Regulation Voltage
150
mV
1x to 1.5x and 1.5x to 2x Mode Transition
Threshold
V M_ , V S_ , V F_ falling
100
mV
2
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