参数资料
型号: MAX1791EUB+T
厂商: Maxim Integrated Products
文件页数: 3/20页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 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
输出数: 1
频率 - 最大: 300kHz
电源电压: 5 V ~ 20 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, 10-Pin μMAX, Step-Down
Controllers for Notebooks
ELECTRICAL CHARACTERISTICS (continued)
(V VP = 15V, VL enabled, C VL = 1μF, C REF = 0.1μF, T A = 0 to +85°C, unless otherwise noted. Typical values are at T A = +25 ° C.)
(Note 1)
PARAMETER
Reference Voltage
SYMBOL
CONDITIONS
V VL = 4.75V to 5.25V, no load
MIN
1.98
TYP
2
MAX
2.02
UNITS
V
Reference Load Regulation
REF Sink Current
REF Fault Lockout Voltage
I REF = 0 to 50μA
REF in regulation
Falling edge
10
1.6
0.01
V
μA
V
Output Undervoltage Threshold
(Foldback)
Output Undervoltage Lockout
Time (Foldback)
Current-Limit Threshold
Thermal Shutdown Threshold
V ILIM
With respect to regulation point, no load
From SHDN signal going high V OUT < 0.6 x
regulation point
Hysteresis = 10 o C
60
10
-90
70
20
-100
160
80
42
-110
%
ms
mV
o
C
VL Undervoltage Lockout
Threshold
DH Gate Driver On-Resistance
DL Gate Driver On-Resistance
(Pullup)
DL Gate Driver On-Resistance
(Pulldown)
Rising edge, hysteresis = 20mV, PWM
disabled below this level
V VP = 6V to 20V, measure at 50mA
DL, high state, measure at 50mA
DL, low state, measure at 50mA
4.1
5
5
1
4.4
8
8
5
V
?
?
?
DH Gate Driver Source/Sink
Current
DL Gate Driver Sink Current
DL Gate Driver Source Current
SHDN Logic Input High
Threshold Voltage
SHDN Logic Input Low
Threshold Voltage
V IH
V IL
V DH = 3V, V VP = 6V
V DL = 2.5V
V DL = 2.5V
1.6
0.6
0.9
0.5
0.6
A
A
A
V
V
Dual Mode Threshold Voltage
SHDN Logic Input Current
MAX1762 V OUT = 1.8V fixed
MAX1791 V OUT = 3.3V fixed
MAX1762 V OUT = 2.5V fixed
MAX1791 V OUT = 5V fixed
SHDN = 0 or 5V
50
2.5
-2
100
3.25
150
4
+2
mV
V
μA
_______________________________________________________________________________________
3
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