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參數(shù)資料
| 型號： | MAX799MJE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Step-Down Controllers with Synchronous Rectifier for CPU Power |
| 中文描述： | SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, DIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁數(shù)： | 7/32頁 |
| 文件大?。?/td> | 319K |
| 代理商： | MAX799MJE |
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M
S tep-Down Controllers with
S ync hronous Rec tifier for CPU Power
_______________________________________________________________________________________
7
____________________________Typic al Operating Charac teristic s (c ontinued)
(T
A
= +25°C, unless otherwise noted.)
0
200
μ
400
μ
600
μ
800
μ
14m
15m
16m
0
4
8
SUPPLY VOLTAGE (V)
12
16
20
24
28
32
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE,
5V/3A CIRCUIT IN IDLE MODE
M
S
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
SUPPLY VOLTAGE (V)
12
16
20
24
28
32
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
M
S
μ
A
DEVICE CURRENT ONLY
SHDN = LOW
0
200
400
600
800
1200
1000
1400
0
4
8
SUPPLY VOLTAGE (V)
12
16
20
24
28
32
M
S
μ
A
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 TO3.5V)
0
10
20
30
0
4
8
SUPPLY VOLTAGE (V)
12
16
20
24
28
32
M
S
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
LOAD CURRENT (A)
DROPOUT VOLTAGE vs.
LOAD CURRENT
200
100
300
400
500
600
700
800
M
V
STANDARD MAX797 APPLICATION
CONFIGURED FOR 5V
V
OUT
> 4.8V
f = 150kHz
f = 300kHz
0
1
100
1000
10
REF LOAD-REGULATION ERROR
vs. LOAD CURRENT
5
10
15
20
M
REF LOAD CURRENT (
μ
A)
L
V
0
200
100
300
400
500
0
20
VL LOAD CURRENT (mA)
40
60
80
M
L
V
VL LOAD-REGULATION ERROR
vs. LOAD CURRENT
0
50
100
150
200
250
300
350
400
450
0
4
8
SUPPLY VOLTAGE (V)
12
16
20
24
28
32
M
M
MAX796
MAXIMUM SECONDARY CURRENT
vs. SUPPLY VOLTAGE, 5V/15V CIRCUIT
I
OUT
(MAIN) = 0A
I
OUT
(MAIN) = 3A
CIRCUIT OF FIGURE 11
TRANSFORMER = TTI5870
V
SEC
> 12.75V
1000
0.1
100
μ
10m
1
SWITCHING FREQUENCY vs.
LOAD CURRENT
10
LOAD CURRENT (A)
S
100
1m
100m
SYNC = REF (300kHz)
SKIP = LOW
+5V, V
IN
= 7.5V
1
+5V, V
IN
= 30V
+3.3V, V
IN
= 7.5V
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