参数资料
型号: MAX1771ESA+T
厂商: Maxim Integrated Products
文件页数: 3/16页
文件大小: 0K
描述: IC REG CTRLR BST PWM 8-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 控制器
输出数: 1
频率 - 最大: 500kHz
占空比: 92%
电源电压: 3 V ~ 16.5 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: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
MAX1771
12V or Adjustable, High-Efficiency,
Low I Q , Step-Up DC-DC Controller
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, I LOAD = 0mA, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETERS
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX1771C
±20
FB Input Current
I FB
MAX1771E
±40
nA
MAX1771M
±60
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
V IH
V IL
V+ = 2V to 16.5V
V+ = 2V to 16.5V
V+ = 16.5V, SHDN = 0V or V+
1.6
0.4
±1
V
V
μA
Current-Limit Trip Level
V CS
V+ = 5V to 16V
MAX1771C/E
MAX1771M
85
75
100
100
115
125
mV
CS Input Current
0.01
±1
μA
EXT Rise Time
EXT Fall Time
V+ = 5V, 1nF from EXT to ground
V+ = 5V, 1nF from EXT to ground
55
55
ns
ns
Note 1: Output voltage guaranteed using preset voltages. See Figures 4a–4d for output current capability versus input voltage.
Note 2: Output voltage line and load regulation depend on external circuit components.
Typical Operating Characteristics
(T A = +25°C, unless otherwise noted.)
100
EFFICIENCY vs. LOAD CURRENT
(BOOTSTRAPED MODE)
100
EFFICIENCY vs. LOAD CURRENT
(NON-BOOTSTRAPED MODE)
700
LOAD CURRENT vs.
MINIMUM START-UP INPUT VOLTAGE
95
V IN = 10V
95
V IN =10V
600
V OUT = 12V, CIRCUIT OF FIGURE 2a
EXTERNAL FET THRESHOLD
90
85
80
75
V IN = 5V
V IN = 8V
V IN = 3V
90
85
80
75
V IN = 5V
V IN = 8V
500
400
300
LIMITS FULL-LOAD START-UP
BELOW 3.5V
70
65
60
V OUT = 12V
CIRCUIT OF
FIGURE 2a
70
65
60
V OUT = 12V
CIRCUIT OF
FIGURE 2b
200
100
0
1
10
100
1000
10,000
1
10
100
1000
10,000
2.00
2.25
2.50
2.75
3.00
3.25
3.50
LOAD CURRENT (mA)
Maxim Integrated
LOAD CURRENT (mA)
MINIMUM START-UP INPUT VOLTAGE (V)
3
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