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MAX797C/D датащи(PDF) 7 Page - Maxim Integrated Products

номер детали MAX797C/D
подробное описание детали  Step-Down Controllers with Synchronous Rectifier for CPU Power
PDF  32 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX797C/D датащи(HTML) 7 Page - Maxim Integrated Products

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Step-Down Controllers with
Synchronous Rectifier for CPU Power
_______________________________________________________________________________________
7
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
0
200
µ
400
µ
600
µ
800
µ
14m
15m
16m
0
4
8
12
16
20
24
28
32
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE,
5V/3A CIRCUIT IN IDLE MODE
SUPPLY VOLTAGE (V)
STANDARD MAX797 APPLICATION
CONFIGURED FOR 5V
SKIP = LOW
SYNC = REF
0
0.2
0.4
0.6
0.8
1.2
1.0
1.4
1.6
0
4
8
12
16
20
24
28
32
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
DEVICE CURRENT ONLY
SHDN = LOW
0
200
400
600
800
1200
1000
1400
0
4
8
12
16
20
24
28
32
SUPPLY VOLTAGE (V)
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE,
3.3V/3A CIRCUIT IN IDLE MODE
STANDARD MAX797 3.3V/3A
CIRCUIT, FIGURE 1
SKIP = LOW
SYNC = REF
SWITCHING
NOT SWITCHING
(FB FORCED TO 3.5V)
0
10
20
30
0
4
8
12
16
20
24
28
32
SUPPLY VOLTAGE (V)
QUIESCENT SUPPLY CURRENT vs.
SUPPLY VOLTAGE, LOW-NOISE MODE
f = 150kHz
f = 300kHz
STANDARD MAX797 3.3V/3A
CIRCUIT, FIGURE 1
SKIP = HIGH
0
0.01
1
10
0.1
DROPOUT VOLTAGE vs.
LOAD CURRENT
200
100
300
400
500
600
700
800
LOAD CURRENT (A)
STANDARD MAX797 APPLICATION
CONFIGURED FOR 5V
VOUT > 4.8V
f = 150kHz
f = 300kHz
0
1
100
1000
10
REF LOAD-REGULATION ERROR
vs. LOAD CURRENT
5
10
15
20
REF LOAD CURRENT (
µA)
0
200
100
300
400
500
0
20
40
60
80
VL LOAD CURRENT (mA)
VL LOAD-REGULATION ERROR
vs. LOAD CURRENT
0
50
100
150
200
250
300
350
400
450
0
4
8
12
16
20
24
28
32
SUPPLY VOLTAGE (V)
MAX796
MAXIMUM SECONDARY CURRENT
vs. SUPPLY VOLTAGE, 5V/15V CIRCUIT
IOUT (MAIN) = 0A
IOUT (MAIN) = 3A
CIRCUIT OF FIGURE 11
TRANSFORMER = TTI5870
VSEC > 12.75V
1000
0.1
100
µ
10m
1
SWITCHING FREQUENCY vs.
LOAD CURRENT
10
LOAD CURRENT (A)
100
1m
100m
SYNC = REF (300kHz)
SKIP = LOW
+5V, VIN = 7.5V
1
+5V, VIN = 30V
+3.3V, VIN = 7.5V



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