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MAX1574 View Datasheet(PDF) - Maxim Integrated

Part Name
Description
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MAX1574 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
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
(VIN = 3.6V, VGND = 0V, EN = IN, RSET = 13.7k, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
PARAMETER
IN Operating Voltage
Undervoltage-Lockout Threshold
Undervoltage-Lockout Hysteresis
Output Overvoltage-Protection Threshold
No-Load Supply Current
Shutdown Supply Current
Soft-Start Time
SET Bias Voltage
SET Leakage in Shutdown
SET Current Range
SET-to-LED_ Current Ratio (ILED/ISET)
LED Current Accuracy
LED-to-LED Current Matching
Maximum LED_ Sink Current
LED_ Dropout Voltage
1x to 2x Mode Transition Threshold
Input-Voltage-Mode Transition Hysteresis
LED Leakage in Shutdown
Maximum OUT Current
Open-Loop OUT Resistance
Switching Frequency
OUT Pulldown Resistance in Shutdown
EN High Voltage
EN Low Voltage
CONDITIONS
VIN falling
VOUT rising
2x mode
10% setting, 1x mode
EN = GND, TA = +25°C
EN = GND, TA = +85°C
EN = GND, TA = +25°C
EN = GND, TA = +85°C
100% setting
TA = +25°C
(Note 2)
RSET = 4.12k
RSET = 4.12k(Note 3)
VLED_ falling
EN = GND, TA = +25°C
EN = GND, TA = +85°C
VIN 3.12V, VOUT = 3.9V
1x mode, (VIN - VOUT) / IOUT
2x mode, (2 x VIN - VOUT) / IOUT
EN = GND
VIN = 2.7V to 5.5V
VIN = 2.7V to 5.5V
MIN TYP MAX UNITS
2.7
5.5
V
2.25 2.45 2.60
V
40
mV
5
V
2
mA
0.35
0.01
1
µA
0.1
2
ms
0.6
V
0.01
1
µA
0.1
4
153
µA
393
A/A
±0.7
%
-4
±0.5
+4
%
52
60
mA
80
120
mV
120
130
140
mV
150
mV
0.01
2
µA
0.1
180
mA
1.5
2.5
9
15
1
MHz
5
k
1.6
V
0.4
V
2 _______________________________________________________________________________________
 

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