MAX5025(2001) 查看數據表（PDF） - Maxim Integrated
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MAX5025 Datasheet PDF : 13 Pages
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500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
VCC to GND ............................................................-0.3V to +12V
PGND to GND .......................................................-0.1V to +0.1V
FB to GND (MAX5025/MAX5026)...............-0.3V to (VCC + 0.3V)
FB to GND (MAX5027/MAX5028)...........................-0.3V to +40V
SHDN to GND.............................................-0.3V to (VCC + 0.3V)
LX to GND ..............................................................-0.3V to +45V
Peak LX Current ................................................................600mA
Operating Temperature Range ...........................-40°C to +85°C
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23 (derate 7.1mW/°C above +70°C)..........695.7mW
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°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
(VCC = 5V, SHDN = VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SUPPLY VOLTAGE
Input Voltage Range
Undervoltage Lockout
Supply Current
Shutdown Current
BOOST CONVERTER
Switching Frequency
Line Regulation
SYMBOL
CONDITIONS
VCC
VUVLO
ICC
ISHDN
MAX5026/MAX5028
MAX5025/MAX5027
Rise/fall, hysteresis = 3mV
MAX5025/MAX5026, FB = 1.4V
MAX5027/MAX5028, FB = 35V
SHDN = GND
MAX5025/MAX5027
fSW
MAX5026/MAX5028, VCC = 3.3V
MAX5025/MAX5027,
ILOAD = 2mA, VCC = 4.5V to 11V,
VOUT = 30V
MAX5026/MAX5028,
ILOAD = 0.5mA, VCC = 3V to 11V,
VOUT = 30V
MIN TYP MAX
3.0
11
4.5
11
2.25 2.65 2.95
350 1000
0.01
1
345 500 1000
410 500
670
0.25
0.25
Load Regulation
MAX5025/MAX5027,
VCC = 5V, ILOAD = 0 to 4mA,
2.0
VOUT = 30V
MAX5026/MAX5028,
VCC = 3.3V, ILOAD = 0 to 1mA,
1.0
VOUT = 30V
Thermal Shutdown
140
Thermal Shutdown Hysteresis
2
UNITS
V
V
µA
µA
kHz
%/V
%
°C
°C
2 _______________________________________________________________________________________
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