Light-Management IC with Efficient 1x/1.5x/2x
Charge Pump for Backlight/Flash/RGB LEDs
ABSOLUTE MAXIMUM RATINGS
Continuous Power Dissipation (T = +70°C)
A
V
, IN, PIN, SCK, SDA, STB, OUT to GND .........-0.3V to +6.0V
DD
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
M_, S_, F_ to GND....................................-0.3V to (V
C1N, C2N to GND .......................................-0.3V to (V + 0.3V)
+ 0.3V)
OUT
IN
IN
C1P, C2P to GND ..-0.3V to greater of (V
+ 0.3V) or (V + 0.3V)
OUT
PGND to GND .......................................................-0.3V to +0.3V
OUT Short Circuit to GND ..........................................Continuous
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 = V
= V
= 3.6V, V
= V = 0V, temperature derating disabled, T = -40°C to +85°C, typical values are at T =
PGND A A
IN
PIN
DD
GND
+25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
2.7
TYP
MAX
5.5
UNIT
IN Operating Voltage
V
V
V
Operating Range
2.7
5.5
DD
Undervoltage-Lockout Threshold
Undervoltage-Lockout Hysteresis
Output Overvoltage-Protection Threshold
V
V
rising or falling
2.25
2.60
V
IN
50
5.00
4.0
0.35
0.7
0.8
0.1
0.1
0.5
1.0
1.5
mV
V
rising
4.75
5.25
6.5
OUT
1.5x or 2x mode
10% setting, 1x mode, flash off
IN + PIN No-Load Supply Current
IN + PIN Shutdown Supply Current
mA
µA
µA
T
T
T
T
= +25°C
= +85°C
= +25°C
= +85°C
5
1
A
A
A
A
All LEDs off, STB = SDA =
SCK = V , I C ready
DD
2
All LEDs off, STB = SDA =
SCK = V , I C ready
DD
V
Quiescent Current
DD
2
Startup into 1x mode
Startup into 1.5x mode
Startup into 2x mode
Soft-Start Time
ms
LED Current Derating Function Start
Temperature
Temperature derating enabled
= +40°C to +85°C, temperature derating
+40
°C
%/°C
%
T
A
LED Current Derating Function Slope
-1.7
0.3
enabled
Default current setting, T = +25°C
-2
-5
+2
+5
A
LED Current SUB Output Accuracy
(Note 2)
Default current setting, T = -40°C to +85°C
A
LED Current FLASH and MAIN Output
Accuracy
Default current setting (Note 2)
-5
0.3
+5
%
M_, S_
F_
28.5
95
30.0
100
40
Maximum M_, S_, F_ Sink Current
mA
M_, S_
90
90
LED Dropout Voltage
100% LED setting (Note 3)
F_
mV
mV
mV
40
1.5x and 2x Mode Regulation Voltage
150
1x to 1.5x and 1.5x to 2x Mode Transition
Threshold
V
, V , V falling
M_ S_ F_
100
2
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