参数资料
型号: MAX1846EUB+T
厂商: Maxim Integrated Products
文件页数: 5/20页
文件大小: 0K
描述: IC REG CTRLR FLYBK INV CM 10UMAX
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
输出数: 1
频率 - 最大: 345kHz
占空比: 98%
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: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
High-Efficiency, Current-Mode,
Inverting PWM Controller
ELECTRICAL CHARACTERISTICS (continued)
(V SHDN = V IN = +12V, SYNC = GND, PGND = GND, R FREQ = 147k ? ±1%, C VL = 0.47μF, C REF = 0.1μF, T A = -40°C to +85°C ,
unless otherwise noted.) (Note 3)
PARAMETER
POL, SYNC Input Current
SHDN Input Current
CONDITIONS
POL, SYNC = GND or VL
V SHDN = +5V or GND
V SHDN = +16.5V
MIN
-12
MAX
40
0
6
UNITS
μA
μA
EXT OUTPUT
EXT On-Resistance
EXT high or low, I EXT = 100mA, V IN = +5V
EXT high or low, I EXT = 100mA, V IN = +3V
7.5
12
?
Note 3: Parameters to -40°C are guaranteed by design and characterization.
Typical Operating Characteristics
(Circuit references are from Table 1 in the Main Application Circuits section, C VL = 0.47μF, C REF = 0.1μF, T A = +25°C, unless otherwise
noted.)
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
100
90
100
90
V IN = 5V
100
90
80
V IN = 5V
80
80
V IN = 12V
70
60
50
V IN = 16.5V
70
60
50
V IN = 3V
V IN = 3.3   V
70
60
50
V IN = 16.5     V
40
30
20
40
30
20
40
30
20
10
0
APPLICATION CIRCUIT A
V OUT = -5V
10
0
APPLICATION CIRCUIT B
V OUT = -12V
10
0
APPLICATION CIRCUIT C
V OUT = -48V
1
10
100
1000
10,000
1
10
100
1000
10,000
1
10
100
1000
-11.90
LOAD CURRENT (mA)
OUTPUT VOLTAGE LOAD REGULATION
1.6
LOAD CURRENT (mA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
1.262
LOAD CURRENT (mA)
REFERENCE VOLTAGE
vs. TEMPERATURE
-11.92
-11.94
1.4
1.258
-11.96
-11.98
-12.00
-12.02
-12.04
1.2
1.0
0.8
0.6
1.254
1.250
1.246
-12.06
-12.08
-12.10
APPLICATION CIRCUIT B
V IN = 5V
0.4
0.2
0
V FB = -0.1V
1.242
1.238
0
100
200
300
400
500
600
0
2
4
6
8
10
12
14
16
-40
-20
0
20
40
60
80
100
LOAD CURRENT (mA)
V IN (V)
TEMPERATURE ( ° C)
_______________________________________________________________________________________
5
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