MAX1575(2003) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1575 Datasheet PDF : 9 Pages
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White LED 1x/1.5x Charge Pump
for Main and Sub-Displays
ABSOLUTE MAXIMUM RATINGS
IN, OUT, ENM, ENS to GND..................................-0.3V to +6.0V
SET, LED_, C1N, C2N to GND.....................-0.3V to (VIN + 0.3V)
C1P, C2P 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)
16-Pin Thin QFN 4mm x 4mm
(derate 16.9 mW/°C above +70°C) ............................1349mW
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, ENM = ENS = IN, RSET = 6.81kΩ, CIN = C1 = C2 = COUT = 1µF, TA = -40°C to +85°C, unless otherwise
noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
CONDITIONS
IN Operating Voltage
Undervoltage-Lockout Threshold
Undervoltage-Lockout Hysteresis
VIN falling
OUT Overvoltage-Protection Threshold
No-Load Supply Current
VOUT rising
1MHz switching in 1.5x mode
No switching in 1x mode,10% setting
Shutdown Supply Current
ENM = ENS = OUT = GND
Soft-Start Time
SET Bias Voltage
SET Leakage in Shutdown
ENM = ENS = GND
SET Current Range
TA = 0°C to +85°C
TA = -40°C to +85°C
SET-to-LED_ Current Ratio (ILED_ / ISET)
LED Current Accuracy
LED-to-LED Current Matching (Note 2)
100% setting
TA = +25°C to +85°C
TA = -40°C to +85°C
TA = +25°C to +85°C
TA = -40°C to +85°C
Maximum LED_ Sink Current
LED_ Dropout Voltage
RSET = 4.53kΩ
(Note 3)
LED_ 1x-to-1.5x Transition Threshold VLED falling
LED Leakage in Shutdown
ENM = ENS = GND, VLED_ = 5.5V
Maximum OUT Current
Open-Loop OUT Resistance
VIN ≥ 3.4V, VOUT = 3.9V, 100% setting
1x mode (VIN - VOUT) / IOUT
1.5x mode (1.5 x VIN - VOUT) / IOUT
Switching Frequency
OUT Pulldown Resistance
ENM = ENS = GND
ENM, ENS High Voltage
VIN = 2.7V to 5.5V
ENM, ENS Low Voltage
ENM, ENS Input Current
Shutdown Delay
VIN = 2.7V to 5.5V
VEN_ = 0V or 5.5V
From falling edge of ENM and ENS
MIN TYP MAX UNITS
2.7
5.5
V
2.25 2.45 2.60
V
35
mV
5
V
2
mA
0.5
0.1
2
µA
2
ms
0.6
V
0.01
1
µA
10
130
µA
30
130
234
A/A
-8
±2
+8
%
-9.5
+9.5
-5
±1.5
+5
%
-6.5
+6.5
27.4 30.0
mA
60
100
mV
90
100
110
mV
0.01
1
µA
120
mA
1
2.5
Ω
4.2
10
1
MHz
5
kΩ
1.6
V
0.4
V
0.01
1
µA
1.0
2
3.3
ms
2 _______________________________________________________________________________________
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