MAX618 データシートの表示（PDF） - Maxim Integrated
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MAX618 Datasheet PDF : 15 Pages
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MAX618
28V Internal Switch, Step-Up DC-DC Converter
Absolute Maximum Ratings
IN to GND ...............................................................-0.3V to +30V
LX to GND ..............................................................-0.3V to +30V
VL to GND ................................................................-0.3V to +6V
SHDN, COMP, FB to GND ............................-0.3V to (VL + 0.3V)
PGND to GND.....................................................................±0.3V
Continuous Power Dissipation (TA = +70°C) (Note 1)
16-Pin QSOP (derate 15mW/°C above +70°C)...................1W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Soldering Temperature (reflow) .......................................+260°C
Note 1: With part mounted on 0.9 in.2 of copper.
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 = +6V, PGND = GND, CVL = 4.7μF, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Voltage
Supply Current, No Load
Supply Current, Full Load, VL
Connected to IN
Supply Current, Full Load
Shutdown Supply Current
VL Output Voltage
VL Load Regulation
VL Undervoltage Lockout
FB Set Voltage
FB Input Bias Current
Line Regulation
Load Regulation
LX Voltage
LX Switch Current Limit
Idle Mode Current Limit
Threshold
SYMBOL
VIN
IIN
IIN
IIN
IIN
VVL
DVVL
VFB
IFB
DVOUT
DVOUT
VLX
ILXON
CONDITIONS
VIN = 3V to 28V, VFB = 1.6V, SHDN = VL
VIN = 3V to 5.5V, VFB = 1.4V,
SHDN = VL = IN
VIN = 3.4V to 28V, VFB = 1.4V,
SHDN = VL, VVL < VIN
VIN = 28V, VFB = 1.6V, SHDN = GND
VIN = 3.5V or 28V, no load
ILOAD = 0 to 2mA, VFB = 1.6V
Rising edge, 1% hysteresis
VFB = 1.6V
VIN = 3V to 6V,VOUT = 12V
VOUT = 12V, ILOAD = 10mA to 500mA
PWM mode
MIN TYP MAX
3
28
500 700
5
6.5
2.5
3.5
3
8
2.9 3.05 3.2
25
40
2.58
2.7
2.8
1.47
1.5
1.53
1
50
0.01 0.08
0.2
28
1.7
2.2
2.7
0.25 0.35 0.45
LX On-Resistance
LX Leakage Current
COMP Maximum Output Current
COMP Voltage to Switch Current
Transconductance
RLXON
ILXOFF
ICOMP
VLX = 28V
FB = GND
DFB = 0.1V
0.3
0.6
0.02
10
100 200
0.8
1
SHDN Input Logic Low
SHDN Input Logic High
Shutdown Input Current
Switching Frequency
Maximum Duty Cycle
VIL
VIH
SHDN = GND or VL
f
DC
0.8
2.0
1
200 250 300
90
95
UNITS
V
µA
mA
mA
µA
V
mV
V
V
nA
%/V
%
V
A
A
Ω
µA
µA
mmho
V
V
µA
kHz
%
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