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參數(shù)資料
| 型號(hào)： | DS1670S |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 312K |
| 代理商： | DS1670S |
MAX774/MAX775/MAX776
-5V/-12V/-15V or Adjustable, High-Efficiency,
Low IQ Inverting DC-to-DC Controllers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
V+ to OUT ...........................................................................21V
V+ to GND ..............................................................-0.3V, +17V
OUT to GND ........................................................-0.3V, to -17V
REF, SHDN, FB, CS...................................-0.3V to (V+ + 0.3V)
EXT ...............................................(VOUT - 0.3V) to (V+ + 0.3V)
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C) ..........................471mW
CERDIP (derate 8.00mW/°C above +70°C) ..................640mW
Operating Temperature Ranges:
MAX77_C_ _ .........................................................0°C to +70°C
MAX77_E_ _ ......................................................-40°C to +85°C
MAX77_MJA ...................................................-55°C to +125°C
Maximum Junction Temperatures:
MAX77_C_ _/E_ _ ...........................................................+150°C
MAX77_MJA..................................................................+175°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V+ = 5V, ILOAD = 0mA, CREF = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°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.
PARAMETER
SYMBOL
CONDITIONS
Output Voltage Line Regulation
(Circuit of Figure 2—
Bootstrapped)
MIN
TYP
MAX
UNITS
V+ Input Voltage Range
V+
3.0
16.5
V
Supply Current
V+ = 16.5V, SHDN
≤ 0.4V (operating)
MAX774, 4V
≤ V+ ≤ 15V, ILOAD = 0.5A
100
A
0.035
mV/V
V+ = 10V, SHDN
≥ 1.6V (shutdown)
25
MAX776, 4V
≤ V+ ≤ 6V, ILOAD = 0.1A
0.137
V+ = 16.5V, SHDN
≥ 1.6V (shutdown)
4
FB Trip Point
3V
≤ V+ ≤ 16.5V
-10
10
mV
FB Input Current
IFB
MAX77_C
MAX775, 4V
≤ V+ ≤ 8V, ILOAD = 0.2A
±50
nA
0.088
MAX77_E
±70
MAX775, 0mA
≤ ILOAD ≤ 500mA, V+ = 5V
1.5
MAX77_M
±90
Output Voltage Load Regulation
(Circuit of Figure 2—
Bootstrapped)
Output Voltage
VOUT
MAX774
-4.80
-5
-5.20
V
MAX774, 0A
≤ ILOAD ≤ 1A, V+ = 5V
1.5
MAX775
mV/A
-11.52
-12
-12.48
MAX776, 0mA
≤ ILOAD ≤ 400mA, V+ = 5V
MAX776
1.0
-14.40
-15
-15.60
Reference Voltage
VREF
IREF = 0A
MAX77_C
1.4700
1.5
1.5300
V
MAX77_E
1.4625
1.5
1.5375
MAX77_M
1.4550
1.5
1.5450
REF Load Regulation
0A
≤ IREF ≤ 100A
MAX77_C/E
410
mV
MAX77_M
415
REF Line Regulation
3V
≤ V+ ≤ 16.5V
40
100
V/V
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