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參數(shù)資料
| 型號： | MAX1684 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Noise, 14V Input, 1A, PWM Step-Down Converters |
| 中文描述： | 低噪聲、14V輸入、1A、PWM降壓型轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 234K |
| 代理商： | MAX1684 |
M
Low-Noise, 14V Input, 1A, PWM
S tep-Down Converters
6
_______________________________________________________________________________________
Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
1.0
1.2
1.1
1.4
1.3
1.7
1.6
1.5
1.8
0
4
2
6
8
10
12
14
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
M
INPUT VOLTAGE (V)
L
PWM OR NORMAL MODE
0
200
600
400
1,000
1,200
800
1,400
0
6
2
8
10
12
14
16
SAFE OPERATING AREA
M
INPUT VOLTAGE (V)
L
V
OUT
= 3.3V
4
0
100
300
200
400
200
400
600
800
1,000
DROPOUT VOLTAGE vs. LOAD CURRENT
M
LOAD CURRENT (mA)
D
V
OUT
= 3.3V
V
OUT
= 5V
INDUCTOR RESISTANCE INCLUDED
0
100
50
200
150
250
300
4
6
7
8
5
9 10 11 12 13 14 15
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (V
OUT
= 3.3V)
M
S
μ
A
NORMAL MODE
LOW-POWER MODE
SCHOTTKY LEAKAGE
CURRENT INCLUDED
I
LOAD
500mA/div
V
50mV/div
2ms/div
LOAD-TRANSIENT RESPONSE
MAX1684, I
LOAD
= 0.1mA TO1A, V
OUT
= 3.3V, V
IN
= 5V,
SYNC/PWM = 3.3V
2.0
2.5
3.0
3.5
4.0
4.5
5.0
4
6
5
7
8
9
10
11
12
MAX1684
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
(V
OUT
= 3.3V, PWM MODE)
M
INPUT VOLTAGE (V)
S
2.7
8
7
6
10
9
14
13
12
11
15
0
2
4
OUTPUT VOLTAGE (V)
6
8
10
12
14
PWM FIXED-FREQUENCY
OPERATION AREA
M
I
MAX1685
MAX1684
V
20mV/div
I
LX
100mA/div
1
μ
s/div
SWITCHING WAVEFORM
MAX1684/85-17
MAX1684, I
LOAD
= 100mA, V
OUT
= 3.3V, V
IN
= 5V,
SYNC/PWM = 3.3V
V
LX
5V/div
I
LX
100mA/div
1
μ
s/div
SWITCHING WAVEFORM
MAX1684/85-18
MAX1684, I
LOAD
= 100mA, V
OUT
= 3.3V, V
IN
= 5V,
SYNC/PWM = 3.3V
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