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1.5x/2x High-Efficiency White LED
Charge Pumps
ABSOLUTE MAXIMUM RATINGS
IN1, IN2, OUT, SHDN , SET to GND …………………-0.3V to +6V
C1-, C2-, to GND..................................................-0.3V, V IN + 1V
C1+, C2+ to GND..........-0.3V, greater of V OUT + 1V or V IN + 1V
OUT Short-Circuit to GND ..........................................Continuous
Continuous Power Dissipation (T A = +70°C)
10-Pin μMAX (derate 5.6 mW/°C above +70°C) ..........444mW
Operating Temperature Range ...........................-40°C to +85°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, GND = 0, SHDN = SET = IN, C IN = 2.2μF, C1 = C2 = 0.47μF, C OUT = 2.2μF, T A = 0°C to +85°C . Typical values are at
T A = +25°C, unless otherwise noted.)
PARAMETER
Input Voltage Operating Range
Undervoltage Lockout Threshold
CONDITIONS
Both rising and falling edges
MIN
2.7
2.2
TYP
MAX
5.3
2.5
UNITS
V
V
Undervoltage Lockout Hysteresis
35
mV
SET Regulation Point
0.19
0.2
0.21
V
MAX1910 Current Regulation
MAX1912 Current Regulation
Maximum Output Current
Output current change for 2.7V < V OUT < 5V
Output current change for 3V < V OUT < 5V
MAX1910 V IN = 2.7V
MAX1912 V IN = 3.6V
80
120
0.5
0.5
%/V
%/V
mA
No Load Input Current
Supply Current in Shutdown
Output Leakage Current in Shutdown
V IN = 3.6V
V IN = 5.3V, V OUT = 0, SHDN = 0
V IN = 3.6V, SHDN = 0
1.5
0.1
0.1
2.5
10
10
mA
μA
μA
Switching Frequency
Switching Frequency Temperature
Coefficient
V IN = 3.6V
f = 750kHz
625
750
250
875
kHz
ppm/ ° C
SET Input Current
SHDN Input Current
SHDN Input Voltage Low
SHDN = 0 or 5.5V
2.7V < V IN < 5.3V
1
100
1
0.4
nA
μA
V
SHDN Input Voltage High
Thermal-Shutdown Threshold
2.7V < V IN < 5.3V
Rising temperature, 15°C hysteresis typical
1.6
160
V
°C
ELECTRICAL CHARACTERISTICS
(V IN = 3.6V, GND = 0, SHDN = SET = IN, C IN = 2.2μF, C1 = C2 = 0.47μF, C OUT = 2.2μF, T A = -40°C to +85°C , unless otherwise
noted.) (Note 1)
PARAMETER
Input Voltage Operating Range
Undervoltage Lockout Threshold
CONDITIONS
Both rising and falling edges
MIN
2.7
2.2
MAX
5.3
2.5
UNITS
V
V
Maximum Output Current
Supply Current in Shutdown
MAX1910 V IN = 2.7V
MAX1910 V IN = 3.6V
V IN = 5.3V, V OUT = 0, SHDN = 0
80
120
10
mA
μA
2
_______________________________________________________________________________________
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