MAX8631XETI 查看數據表（PDF） - Maxim Integrated
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MAX8631XETI Datasheet PDF : 15 Pages
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1x/1.5x/2x White LED Charge Pump with Two
LDOs in 4mm x 4mm Thin QFN
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3.6V, VGND = VPGND = 0V, ENM1 = ENM2 = ENF = IN, RSETM = RSETF = 6.8kΩ, P1 = P2 = unconnected, CREF = 0.01µF,
TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
1x to 1.5x or 1.5x to 2x Mode
Transition Threshold
90
100
110
mV
Input Voltage-Mode Transition
Hysteresis
150
mV
Charge-Pump Maximum OUT
Current
VIN ≥ 3.15V, VOUT = 3.9V
580
mA
Open-Loop OUT Resistance
Charge-Pump Short-Circuit
Current
Switching Frequency
1x mode, (VIN - VOUT) / IOUT
1.5x mode, (1.5VIN - VOUT) / IOUT
2x mode, (2VIN - VOUT) / IOUT
VOUT < 1.25V
0.3
1.0
1.1
4.0
Ω
1.5
4.14
500
mA
1
MHz
OUT Pulldown Resistance in
Shutdown
ENM_ = ENF = GND
5
kΩ
LED DRIVER
SET_ Bias Voltage
SET_ Leakage in Shutdown
SET_ Current Range
TA = +25°C
ENM_ = ENF = GND
TA = +25°C
TA = +85°C
0.6
V
0.01
1
µA
0.1
10
145
µA
SETM-to-Main LED Current Ratio
(IM_/ISETM)
100% setting, M1–M4
230
A/A
SETF-to-Flash LED Current Ratio
(IF_/ISETF)
M_, F_ Current Accuracy
Maximum Main LED Sink Current
Maximum Flash LED Sink Current
Current-Derating-Function Start
Temperature
100% setting, F1–F4
TA = +25°C
TA = -40°C to current derating start temperature
RSETM = 4.6kΩ, for each M_
RSETF = 4.12kΩ, IF1 + IF2 + IF3 + IF4
690
A/A
-1.25
-4
+1.25
%
+4
30
mA
400
mA
+40
°C
Current-Derating-Function Slope
Dropout Voltage
1.5x and 2x Regulation Voltage
M_, F_ Leakage in Shutdown
LDO_
Output Voltage Accuracy
Output Current Range
Current Limit
Soft-Start Current Limit
TA = +40°C to +85°C
(Note 2)
ENM_ = ENF = GND
TA = +25°C
TA = +85°C
ILDO_ = 150mA, relative to VOUT(NOM) (Note 3)
VLDO_ = 0V
-1.7
%/°C
40
90
mV
150
mV
0.01
1
µA
0.1
-1.7
0
+1.7
%
0
200
mA
280
475
750
mA
160
mA
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