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MAX1649C/D датащи(PDF) 3 Page - Maxim Integrated Products

номер детали MAX1649C/D
подробное описание детали  5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
PDF  12 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1649C/D датащи(HTML) 3 Page - Maxim Integrated Products

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5V/3.3V or Adjustable, High-Efficiency,
Low-Dropout, Step-Down DC-DC Controllers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
3V
≤ V+ ≤ 16V
CS Input Current
±1
µA
CEXT = 0.001µF, V+ = 12V
EXT Rise Time
25
ns
CEXT = 0.001µF, V+ = 12V
EXT Fall Time
25
ns
Current-Limit Trip Level
(V+ to CS)
mV
VCS
3V
≤ V+ ≤ 16V
80
110
140
tON
tON + tOFF
x 100%
Maximum Duty Cycle
95
96.5
%
80
66
SUPPLY CURRENT vs. TEMPERATURE
68
78
76
74
-60
-20
60
140
TEMPERATURE (°C)
20
100
-40
0
80
40
120
72
70
V+ = 10V
V+ = 16V
V+ = 4V
4.0
0
SHUTDOWN CURRENT
vs. TEMPERATURE
0.5
3.5
3.0
2.5
-60
-20
60
140
TEMPERATURE (°C)
20
100
-40
0
80
40
120
2.0
1.5
V+ = 8V
V+ = 16V
V+ = 4V
1.0
V+ = 12V
Switch Maximum On-Time
24
32
40
µs
tON (max)
V+ = 12V
Switch Minimum Off-Time
0.8
1.1
1.8
µs
tOFF (min)
-60
-20
60
140
EXT RISE AND FALL TIMES
vs. TEMPERATURE (1nF)
TEMPERATURE (°C)
20
100
-40
0
80
40
120
60
55
50
45
40
35
30
25
20
15
V+ = 15V, tFALL
V+ = 15V, tRISE
V+ = 5V, tFALL
V+ = 5V, tRISE
CEXT = 1nF
1
10
10k
LOAD CURRENT (mA)
100
90
80
70
60
50
40
100
1k
0.1
EFFICIENCY
vs. LOAD CURRENT (VOUT = 5V)
VOUT = 5V
CIRCUIT OF
FIGURE 1
TOP TO
BOTTOM:
VIN = 6V
VIN = 8V
VIN = 10V
VIN = 12V
VIN = 15V
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
40
-60
-20
60
140
EXT RISE AND FALL TIMES
vs. TEMPERATURE (5nF)
80
TEMPERATURE (°C)
20
100
-40
0
80
40
120
60
100
140
120
160
200
180
240
220
V+ = 15V, tFALL
V+ = 15V, tRISE
V+ = 5V, tFALL
V+ = 5V, tRISE
CEXT = 5nF
1
10
10k
LOAD CURRENT (mA)
100
90
80
70
60
50
40
100
1k
0.1
EFFICIENCY
vs. LOAD CURRENT (VOUT = 3.3V)
VOUT = 3.3V
CIRCUIT OF
FIGURE 1
TOP TO
BOTTOM:
VIN = 4.3V
VIN = 5V
VIN = 8V
VIN = 10V
VIN = 12V
VIN = 15V



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