参数资料
型号: MAX668EUB+T
厂商: Maxim Integrated Products
文件页数: 5/18页
文件大小: 0K
描述: IC REG CTRLR PWM HYBRID 10-UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 电流模式,混合
输出数: 1
频率 - 最大: 575kHz
占空比: 94%
电源电压: 3 V ~ 28 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
MAX668/MAX669
1.8V to 28V Input, PWM Step-Up
Controllers in μMAX
Typical Operating Characteristics
(Circuits of Figures 2, 3, 4, and 5; T A = +25°C; unless otherwise noted.)
95
EFFICIENCY vs. LOAD CURRENT
(V OUT = 5V)
95
MAX668 EFFICIENCY vs.
LOAD CURRENT (V OUT = 12V)
95
MAX668 EFFICIENCY vs.
LOAD CURRENT (V OUT = 24V)
90
85
V IN = 3.3V
V IN = 3.6V
90
90
V IN = 12V
V IN = 8V
80
75
70
V IN = 2.7V
V IN = 2V
85
80
85
80
V IN = 5V
65
V IN = 5V
60
55
BOOTSTRAPPED
FIGURE 3
R4 = 200k ?
75
NON-BOOTSTRAPPED
FIGURE 4
R4 = 200k ?
75
NON-BOOTSTRAPPED
FIGURE 4
R4 = 200k ?
50
70
70
1
10
100
1000
10,000
1
10
100
1000
10,000
1
10
100
1000
10,000
3.0
LOAD CURRENT (mA)
MAX669 MINIMUM START-UP VOLTAGE
vs. LOAD CURRENT
1200
LOAD CURRENT (mA)
SUPPLY CURRENT vs.
SUPPLY VOLTAGE
4000
LOAD CURRENT (mA)
NO-LOAD SUPPLY CURRENT vs.
SUPPLY VOLTAGE
2.5
2.0
V OUT = 5V
1000
800
CURRENT INTO V CC PIN
R OSC = 500k ?
3500
3000
2500
V OUT = 12V
BOOTSTRAPPED
FIGURE 2
R4 = 200k ?
V OUT = 12V
1.5
1.0
600
400
MAX669
2000
1500
1000
0.5
0
BOOTSTRAPPED
FIGURE 2
200
0
MAX668
500
0
0
100 200 300 400 500 600 700 800 900 1000
0
5
10
15
20
25
30
0
2
4
6
8
10
12
3.5
LOAD CURRENT (mA)
SHUTDOWN CURRENT vs.
SUPPLY VOLTAGE
290
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs.
TEMPERATURE
300
SUPPLY VOLTAGE (V)
LDO DROPOUT VOLTAGE vs.
LDO CURRENT
3.0
MAX669
270
250
2.5
MAX668
250
R OSC = 100k ?
200
V IN = 3V
2.0
230
R OSC = 200k ?
150
1.5
210
V IN = 4.5V
1.0
0.5
190
170
R OSC = 500k ?
100
50
CURRENT INTO V CC PIN
0
150
0
0
5
10
15
20
25
30
-40
-20
0
20
40
60
80
100
0.1
1
10
20
SUPPLY VOLTAGE (V)
Maxim Integrated
TEMPERATURE ( ° C)
LDO CURRENT (mA)
5
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