MAX770 데이터 시트보기 (PDF) - Maxim Integrated
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MAX770 Datasheet PDF : 20 Pages
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5V/12V/15V or Adjustable, High-Efficiency,
Low IQ, Step-Up DC-DC Controllers
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
V+ to GND.............................................................-0.3V to 17V
V+ to SGND.............................................................-0.3V to 7V
SGND........................................................-0.3V to (V+ + 0.3V)
EXT, CS, REF, LBO, LBI, SHDN, FB.............-0.3V to (V+ + 0.3V)
EXTH, EXTL ..................................................-0.3V to (V+ + 0.3V)
V5, V12, V15 .............................................................-0.3V to 17V
GND to AGND .........................................................0.1V to -0.1V
ISGND ..................................................................................50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)....727mW
8-Pin SO (derate 5.88mW/°C above +70°C) ................471mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C) ........640mW
14-Pin Plastic DIP
(derate 10.00mW/°C above +70°C) .............................800mW
14-Pin SO (derate 8.33mW/°C above +70°C) ..............667mW
14-Pin CERDIP (derate 9.09mW/°C above +70°C) ......727mW
Operating Temperature Ranges
MAX77_C_ _ ........................................................0°C to +70°C
MAX77_E_ _......................................................-40°C to +85°C
MAX77_MJ_ ...................................................-55°C to +125°C
Junction Temperatures
MAX77_C_ _/E_ _ ..........................................................+150°C
MAX77_MJ_..................................................................+175°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+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
(V+ = 5V, ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Voltage Range
Minimum Start-Up Voltage
Supply Current
Standby Current
Output Voltage (Note 1)
SYMBOL
CONDITIONS
MAX770–772 (internal feedback resistors)
MAX770–772C/E (external resistors)
MAX770–772MJA (external resistors)
MAX773C/E
MAX773MJD
MAX770/MAX771/MAX772
V+ = 16.5V, SHDN = 0V (normal operation)
V+ = 10.0V, SHDN ≥ 1.6V (shutdown)
V+ = 16.5V, SHDN ≥ 1.6V (shutdown)
V+ = 2.0V to 5.0V, over full load range
V+ = 2.0V to 12.0V, over full load range
V+ = 2.0V to 15.0V, over full load range
MIN
2.0
3.0
3.1
3.0
3.1
4.80
11.52
14.40
Output Voltage Line Regulation
(Note 2)
Figure 2a, V+ = 2.7V to 4.5V,
ILOAD = 700mA, VOUT = 5V
Output Voltage Load Regulation
(Note 2)
Maximum Switch On-Time
Minimum Switch Off-Time
Efficiency
Reference Voltage
tON(max)
tOFF(min)
VREF
Figure 2a, V+ = 3V, ILOAD = 30mA to 1A,
VOUT = 5V
V+ = 4V, ILOAD = 500mA, VOUT = 5V
MAX77_C
IREF = 0µA
MAX77_E
MAX77_M
12
1.8
1.4700
1.4625
1.4550
TYP MAX UNITS
16.5
16.5
16.5
V
16.5
16.5
1.8
2.0
V
85
110
µA
2
5
µA
4
5.0 5.20
12.0 12.48
V
15.0 15.60
5
mV/V
20
mV/A
16
20
µs
2.3
2.8
µs
87
%
1.5 1.5300
1.5 1.5375
V
1.5 1.5450
2 _______________________________________________________________________________________
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